{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-06-04T00:37:47.249Z"},"system":{"slug":"ca__south-coast-water-district__CA3010042__2021","name":"South Coast Water District — Laguna Beach, Ca","state":"CA","year":2021,"url":"https://www.thewatermap.com/water/ca/south-coast-water-district-laguna-beach-ca/2021","apiUrl":"https://www.thewatermap.com/api/water/ca/south-coast-water-district-laguna-beach-ca/2021","markdownUrl":"https://www.thewatermap.com/water/ca/south-coast-water-district-laguna-beach-ca/2021/llms.txt","coordinates":{"latitude":33.7040161,"longitude":-117.8804373},"contaminantsMeasured":32,"contaminantsWithFederalLimit":11,"contaminantsAtOrAboveLimit":0,"contaminantsApproachingLimit":0,"source":{"type":"Consumer Confidence Report (CCR)","description":"Figures are transcribed from the water utility's own annual Consumer Confidence Report, cross-checked by a second model, and approved by a person before publishing."},"families":[{"family":"disinfectant","familyLabel":"Disinfectants","contaminants":[{"analyteId":"chlorine","name":"Chlorine","family":"disinfectant","familyLabel":"Disinfectants","casrn":null,"whatItIs":"A disinfectant added to drinking water to kill bacteria and viruses.","whyItMatters":"Effective and necessary, but high residual levels can cause taste and odor issues; the EPA caps the residual disinfectant level.","measured":{"value":68.5,"low":null,"high":null,"kind":"point","display":"68.5","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"68.5"},"federalStandard":{"type":"MCL","value":4000,"units":"ug/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":68.5,"low":null,"high":null,"kind":"point","display":"68.5","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"68.5"},{"value":120,"low":0,"high":120,"kind":"range","display":"0–120","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 120"}]}]},{"family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","contaminants":[{"analyteId":"chlorite","name":"Chlorite","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":"14998-27-7","whatItIs":null,"whyItMatters":null,"measured":{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":true,"detectionLimit":0.05,"rawVerbatim":"<0.05"},"federalStandard":{"type":"MCL","value":1,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"<0.05"},{"value":0.08,"low":0,"high":0.08,"kind":"range","display":"0–0.08","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 0.08"}]},{"analyteId":"haa5","name":"HAA5","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":null,"whatItIs":"Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter.","whyItMatters":"Long-term exposure above the federal limit is associated with an increased cancer risk.","measured":{"value":21,"low":null,"high":null,"kind":"point","display":"21","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"21"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":8.1,"low":null,"high":null,"kind":"point","display":"8.1","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"8.1"},{"value":14.7,"low":null,"high":null,"kind":"point","display":"14.7","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"14.7"},{"value":21,"low":null,"high":null,"kind":"point","display":"21","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"21"},{"value":19,"low":5.6,"high":19,"kind":"range","display":"5.6–19","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"5.6 – 19"},{"value":26,"low":7.4,"high":26,"kind":"range","display":"7.4–26","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"7.4 – 26"},{"value":14,"low":6.2,"high":14,"kind":"range","display":"6.2–14","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"6.2 – 14"},{"value":29.7,"low":10.6,"high":29.7,"kind":"range","display":"10.6–29.7","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"10.6 – 29.7"},{"value":8.3,"low":null,"high":null,"kind":"point","display":"8.3","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"8.3"}]},{"analyteId":"tthm","name":"TTHM","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":null,"whatItIs":"Total trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter.","whyItMatters":"Long-term exposure above the federal limit is linked to liver, kidney, and central-nervous-system effects and increased cancer risk.","measured":{"value":51,"low":null,"high":null,"kind":"point","display":"51","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"51"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":51,"low":null,"high":null,"kind":"point","display":"51","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"51"},{"value":55,"low":31,"high":55,"kind":"range","display":"31–55","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"31 – 55"}]}]},{"family":"inorganic","familyLabel":"Inorganic chemicals","contaminants":[{"analyteId":"chloride","name":"Chloride","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"16887-00-6","whatItIs":"A naturally occurring salt compound.","whyItMatters":"Regulated only as a secondary (cosmetic) standard; high levels cause a salty taste and can corrode pipes.","measured":{"value":112,"low":null,"high":null,"kind":"point","display":"112","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"112"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":101,"low":null,"high":null,"kind":"point","display":"101","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"101"},{"value":101,"low":null,"high":null,"kind":"point","display":"101","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"101"},{"value":104,"low":98,"high":104,"kind":"range","display":"98–104","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"98 – 104"},{"value":112,"low":null,"high":null,"kind":"point","display":"112","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"112"},{"value":103,"low":99.8,"high":103,"kind":"range","display":"99.8–103","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"99.8 – 103"},{"value":133,"low":103,"high":133,"kind":"range","display":"103–133","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"103 – 133"}]},{"analyteId":"fluoride","name":"Fluoride","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"16984-48-8","whatItIs":"A mineral often added to drinking water to help prevent tooth decay.","whyItMatters":"Beneficial at low levels, but long-term exposure above the federal limit can cause bone disease and tooth mottling.","measured":{"value":0.73,"low":null,"high":null,"kind":"point","display":"0.73","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"0.73"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.73,"low":null,"high":null,"kind":"point","display":"0.73","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.73"},{"value":0.34,"low":null,"high":null,"kind":"point","display":"0.34","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.34"},{"value":0.8,"low":0.7,"high":0.8,"kind":"range","display":"0.7–0.8","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.7 – 0.8"},{"value":0.73,"low":null,"high":null,"kind":"point","display":"0.73","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.73"},{"value":0.7,"low":null,"high":null,"kind":"point","display":"0.7","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.7"},{"value":0.35,"low":0.32,"high":0.35,"kind":"range","display":"0.32–0.35","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.32 – 0.35"}]},{"analyteId":"nitrate","name":"Nitrate","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"14797-55-8","whatItIs":"A compound from fertilizer runoff, septic systems, and erosion of natural deposits.","whyItMatters":"Levels above the federal limit can cause 'blue baby syndrome,' a serious oxygen-transport condition in infants.","measured":{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"1"},"federalStandard":{"type":"MCL","value":10,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"1"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1"}]},{"analyteId":"sulfate","name":"Sulfate","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"14808-79-8","whatItIs":"A naturally occurring mineral from rock and soil.","whyItMatters":"No health-based federal limit; high levels can have a laxative effect and a bitter taste.","measured":{"value":221,"low":null,"high":null,"kind":"point","display":"221","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"221"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":167,"low":null,"high":null,"kind":"point","display":"167","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"167"},{"value":225,"low":201,"high":225,"kind":"range","display":"201–225","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"201 – 225"},{"value":213,"low":null,"high":null,"kind":"point","display":"213","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"213"},{"value":200,"low":136,"high":200,"kind":"range","display":"136–200","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"136 – 200"},{"value":229,"low":213,"high":229,"kind":"range","display":"213–229","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"213 – 229"},{"value":221,"low":null,"high":null,"kind":"point","display":"221","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"221"}]}]},{"family":"metal","familyLabel":"Metals","contaminants":[{"analyteId":"aluminum","name":"Aluminum","family":"metal","familyLabel":"Metals","casrn":"7429-90-5","whatItIs":"A common element sometimes used as a treatment coagulant.","whyItMatters":"Regulated only as a secondary (cosmetic) standard; high levels can discolor water.","measured":{"value":140,"low":null,"high":null,"kind":"point","display":"140","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"140"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":210,"low":85,"high":210,"kind":"range","display":"85–210","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"85 – 210"},{"value":0.14,"low":null,"high":null,"kind":"point","display":"0.14","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.14"},{"value":140,"low":null,"high":null,"kind":"point","display":"140","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"140"},{"value":0.21,"low":0.085,"high":0.21,"kind":"range","display":"0.085–0.21","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.085 – 0.21"}]},{"analyteId":"arsenic","name":"Arsenic","family":"metal","familyLabel":"Metals","casrn":"7440-38-2","whatItIs":"A naturally occurring element that also enters water from industry and agriculture.","whyItMatters":"A known human carcinogen; long-term exposure is linked to skin, bladder, and lung cancer.","measured":{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":true,"detectionLimit":2,"rawVerbatim":"<2"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"<2"},{"value":2.24,"low":0,"high":2.24,"kind":"range","display":"0–2.24","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 2.24"}]},{"analyteId":"barium","name":"Barium","family":"metal","familyLabel":"Metals","casrn":"7440-39-3","whatItIs":"A metal from erosion of natural deposits and industrial discharge.","whyItMatters":"Long-term exposure above the federal limit can raise blood pressure.","measured":{"value":0.107,"low":null,"high":null,"kind":"point","display":"0.107","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"0.107"},"federalStandard":{"type":"MCL","value":2,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.107,"low":null,"high":null,"kind":"point","display":"0.107","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.107"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"<0.1"},{"value":0.107,"low":null,"high":null,"kind":"point","display":"0.107","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.107"},{"value":0.107,"low":0,"high":0.107,"kind":"range","display":"0–0.107","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 0.107"}]},{"analyteId":"boron","name":"Boron","family":"metal","familyLabel":"Metals","casrn":"7440-42-8","whatItIs":"A naturally occurring element from rock and soil.","whyItMatters":"No enforceable federal limit; the EPA has issued a health advisory level.","measured":{"value":0.137,"low":null,"high":null,"kind":"point","display":"0.137","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"0.137"},"federalStandard":{"type":"NL","value":1,"units":"mg/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.141,"low":0.133,"high":0.141,"kind":"range","display":"0.133–0.141","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.133 – 0.141"},{"value":0.137,"low":null,"high":null,"kind":"point","display":"0.137","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.137"},{"value":0.13,"low":null,"high":null,"kind":"point","display":"0.13","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.13"},{"value":0.13,"low":null,"high":null,"kind":"point","display":"0.13","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.13"}]},{"analyteId":"calcium","name":"Calcium","family":"metal","familyLabel":"Metals","casrn":"7440-70-2","whatItIs":"A naturally occurring mineral that contributes to water hardness.","whyItMatters":"Not federally regulated for health; affects scaling and taste.","measured":{"value":71.6,"low":null,"high":null,"kind":"point","display":"71.6","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"71.6"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":54,"low":null,"high":null,"kind":"point","display":"54","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"54"},{"value":71.6,"low":null,"high":null,"kind":"point","display":"71.6","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"71.6"},{"value":68,"low":null,"high":null,"kind":"point","display":"68","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"68"},{"value":75,"low":43,"high":75,"kind":"range","display":"43–75","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"43 – 75"},{"value":73.3,"low":69.9,"high":73.3,"kind":"range","display":"69.9–73.3","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"69.9 – 73.3"},{"value":70,"low":66,"high":70,"kind":"range","display":"66–70","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"66 – 70"}]},{"analyteId":"copper","name":"Copper","family":"metal","familyLabel":"Metals","casrn":"7440-50-8","whatItIs":"A metal that enters water from corroding household plumbing.","whyItMatters":"Short-term exposure causes stomach distress; long-term exposure can damage the liver and kidneys.","measured":{"value":0.25,"low":null,"high":null,"kind":"point","display":"0.25","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0.25"},"federalStandard":{"type":"AL","value":1.3,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.25,"low":null,"high":null,"kind":"point","display":"0.25","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.25"}]},{"analyteId":"lead","name":"Lead","family":"metal","familyLabel":"Metals","casrn":"7439-92-1","whatItIs":"A toxic metal that leaches into water from old service lines, solder, and plumbing fixtures.","whyItMatters":"There is no safe level of lead; it harms brain development in children and raises blood pressure in adults. The EPA sets an action level, not a health goal above zero.","measured":{"value":0.0018,"low":null,"high":null,"kind":"point","display":"0.0018","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0.0018"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.0018,"low":null,"high":null,"kind":"point","display":"0.0018","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.0018"}]},{"analyteId":"magnesium","name":"Magnesium","family":"metal","familyLabel":"Metals","casrn":"7439-95-4","whatItIs":"A naturally occurring mineral that contributes to water hardness.","whyItMatters":"Not federally regulated for health; affects scaling and taste.","measured":{"value":27.6,"low":null,"high":null,"kind":"point","display":"27.6","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"27.6"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":25,"low":null,"high":null,"kind":"point","display":"25","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"25"},{"value":28.9,"low":26.2,"high":28.9,"kind":"range","display":"26.2–28.9","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"26.2 – 28.9"},{"value":27.6,"low":null,"high":null,"kind":"point","display":"27.6","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"27.6"},{"value":18,"low":null,"high":null,"kind":"point","display":"18","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"18"},{"value":26,"low":24,"high":26,"kind":"range","display":"24–26","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"24 – 26"},{"value":18,"low":null,"high":null,"kind":"point","display":"18","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"18"}]},{"analyteId":"manganese","name":"Manganese","family":"metal","familyLabel":"Metals","casrn":"7439-96-5","whatItIs":"A naturally occurring metal from soil and rock.","whyItMatters":"No enforceable federal limit; high levels stain fixtures and laundry and can affect taste, with a health advisory for infants.","measured":{"value":1.1,"low":null,"high":null,"kind":"point","display":"1.1","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"1.1"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.87,"low":null,"high":null,"kind":"point","display":"0.87","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.87"},{"value":1.1,"low":null,"high":null,"kind":"point","display":"1.1","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"1.1"},{"value":1.1,"low":null,"high":null,"kind":"point","display":"1.1","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1.1"},{"value":0.87,"low":null,"high":null,"kind":"point","display":"0.87","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.87"}]},{"analyteId":"potassium","name":"Potassium","family":"metal","familyLabel":"Metals","casrn":"7440-09-7","whatItIs":"A naturally occurring mineral from rock and soil.","whyItMatters":"Not federally regulated for health.","measured":{"value":5.14,"low":null,"high":null,"kind":"point","display":"5.14","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"5.14"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":5.14,"low":null,"high":null,"kind":"point","display":"5.14","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"5.14"},{"value":5.46,"low":4.82,"high":5.46,"kind":"range","display":"4.82–5.46","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"4.82 – 5.46"},{"value":4.8,"low":4.4,"high":4.8,"kind":"range","display":"4.4–4.8","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"4.4 – 4.8"},{"value":4.6,"low":null,"high":null,"kind":"point","display":"4.6","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"4.6"}]},{"analyteId":"sodium","name":"Sodium","family":"metal","familyLabel":"Metals","casrn":"7440-23-5","whatItIs":"A naturally occurring salt component.","whyItMatters":"Not federally regulated for health; relevant for people on sodium-restricted diets.","measured":{"value":98.8,"low":null,"high":null,"kind":"point","display":"98.8","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"98.8"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":70,"low":null,"high":null,"kind":"point","display":"70","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"70"},{"value":98.8,"low":null,"high":null,"kind":"point","display":"98.8","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"98.8"},{"value":102,"low":95,"high":102,"kind":"range","display":"95–102","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"95 – 102"},{"value":98,"low":null,"high":null,"kind":"point","display":"98","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"98"},{"value":70,"low":null,"high":null,"kind":"point","display":"70","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"70"},{"value":102,"low":95.5,"high":102,"kind":"range","display":"95.5–102","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"95.5 – 102"}]}]},{"family":"other","familyLabel":"Other","contaminants":[{"analyteId":"chlorine_total","name":"Chlorine Total","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":1.5,"low":null,"high":null,"kind":"point","display":"1.5","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1.5"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":2.5,"low":0,"high":2.5,"kind":"range","display":"0–2.5","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 2.5"},{"value":1.5,"low":null,"high":null,"kind":"point","display":"1.5","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"1.5"}]}]},{"family":"physical_aggregate","familyLabel":"Physical & aggregate","contaminants":[{"analyteId":"alkalinity","name":"Alkalinity","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of the water's capacity to neutralize acids.","whyItMatters":"Not federally regulated for health; relevant to corrosion control and treatment.","measured":{"value":126,"low":null,"high":null,"kind":"point","display":"126","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"126"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":127,"low":122,"high":127,"kind":"range","display":"122–127","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"122 – 127"},{"value":68,"low":null,"high":null,"kind":"point","display":"68","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"68"},{"value":127,"low":125,"high":127,"kind":"range","display":"125–127","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"125 – 127"},{"value":74.4,"low":59.6,"high":74.4,"kind":"range","display":"59.6–74.4","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"59.6 – 74.4"},{"value":125,"low":null,"high":null,"kind":"point","display":"125","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"125"},{"value":126,"low":null,"high":null,"kind":"point","display":"126","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"126"}]},{"analyteId":"color","name":"Color","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of visible tint in the water.","whyItMatters":"Regulated only as a secondary (cosmetic) standard.","measured":{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"1"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"1"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"1"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"1"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"1"}]},{"analyteId":"hardness","name":"Hardness","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of dissolved calcium and magnesium minerals.","whyItMatters":"Not federally regulated for health; affects scaling, soap use, and taste.","measured":{"value":292,"low":null,"high":null,"kind":"point","display":"292","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"292"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":17,"low":null,"high":null,"kind":"point","display":"17","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"17"},{"value":16,"low":null,"high":null,"kind":"point","display":"16","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"16"},{"value":278,"low":null,"high":null,"kind":"point","display":"278","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"278"},{"value":18,"low":16,"high":18,"kind":"range","display":"16–18","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"16 – 18"},{"value":220,"low":null,"high":null,"kind":"point","display":"220","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"220"},{"value":281,"low":275,"high":281,"kind":"range","display":"275–281","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"275 – 281"},{"value":302,"low":282,"high":302,"kind":"range","display":"282–302","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"282 – 302"},{"value":292,"low":null,"high":null,"kind":"point","display":"292","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"292"},{"value":231,"low":208,"high":231,"kind":"range","display":"208–231","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"208 – 231"},{"value":16,"low":null,"high":null,"kind":"point","display":"16","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"16"}]},{"analyteId":"odor","name":"Odor","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of detectable smell in the water.","whyItMatters":"Regulated only as a secondary (cosmetic) standard.","measured":{"value":3,"low":null,"high":null,"kind":"point","display":"3","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"3"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"1"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"1"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"1"},{"value":3,"low":null,"high":null,"kind":"point","display":"3","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"3"},{"value":3,"low":null,"high":null,"kind":"point","display":"3","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"3"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"1"}]},{"analyteId":"ph","name":"pH","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of how acidic or basic the water is.","whyItMatters":"Regulated only as a secondary standard; very low or high pH can corrode pipes or affect taste.","measured":{"value":8.2,"low":null,"high":null,"kind":"point","display":"8.2","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"8.2"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":7.98,"low":null,"high":null,"kind":"point","display":"7.98","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"7.98"},{"value":8.4,"low":8,"high":8.4,"kind":"range","display":"8–8.4","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"8 – 8.4"},{"value":8.18,"low":7.91,"high":8.18,"kind":"range","display":"7.91–8.18","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"7.91 – 8.18"},{"value":8.2,"low":null,"high":null,"kind":"point","display":"8.2","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"8.2"},{"value":8.1,"low":null,"high":null,"kind":"point","display":"8.1","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"8.1"},{"value":8.1,"low":null,"high":null,"kind":"point","display":"8.1","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"8.1"}]},{"analyteId":"specific_conductance","name":"Specific Conductance","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of how well water conducts electricity, which tracks dissolved mineral content.","whyItMatters":"Not federally regulated for health; used as a proxy for total dissolved solids.","measured":{"value":991,"low":null,"high":null,"kind":"point","display":"991","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"991"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1010,"low":965,"high":1010,"kind":"range","display":"965–1010","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"965 – 1,010"},{"value":764,"low":755,"high":764,"kind":"range","display":"755–764","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"755 – 764"},{"value":988,"low":null,"high":null,"kind":"point","display":"988","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"988"},{"value":760,"low":null,"high":null,"kind":"point","display":"760","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"760"},{"value":1006,"low":979,"high":1006,"kind":"range","display":"979–1006","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"979 – 1,006"},{"value":991,"low":null,"high":null,"kind":"point","display":"991","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"991"}]},{"analyteId":"toc","name":"TOC","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"Total organic carbon — a measure of organic material dissolved in the water.","whyItMatters":"Not harmful itself, but it is the raw material that forms disinfection byproducts; removal is a treatment requirement.","measured":{"value":2.5,"low":null,"high":null,"kind":"point","display":"2.5","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"2.5"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":2.6,"low":2.3,"high":2.6,"kind":"range","display":"2.3–2.6","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2.3 – 2.6"},{"value":2.1,"low":null,"high":null,"kind":"point","display":"2.1","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"2.1"},{"value":2.5,"low":null,"high":null,"kind":"point","display":"2.5","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"2.5"},{"value":2.1,"low":2,"high":2.1,"kind":"range","display":"2–2.1","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2 – 2.1"}]},{"analyteId":"tds","name":"Total Dissolved Solids","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"Total dissolved solids — the combined content of all dissolved minerals and salts.","whyItMatters":"Regulated only as a secondary (cosmetic) standard; high levels affect taste and hardness.","measured":{"value":628,"low":null,"high":null,"kind":"point","display":"628","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"628"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":520,"low":445,"high":520,"kind":"range","display":"445–520","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"445 – 520"},{"value":628,"low":null,"high":null,"kind":"point","display":"628","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"628"},{"value":496,"low":null,"high":null,"kind":"point","display":"496","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"496"},{"value":627,"low":null,"high":null,"kind":"point","display":"627","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"627"},{"value":650,"low":604,"high":650,"kind":"range","display":"604–650","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"604 – 650"},{"value":648,"low":608,"high":648,"kind":"range","display":"608–648","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"608 – 648"}]},{"analyteId":"turbidity","name":"Turbidity","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of cloudiness from suspended particles in the water.","whyItMatters":"High turbidity can shelter microbes from disinfection; the EPA enforces it through a treatment-technique standard.","measured":{"value":0.18,"low":null,"high":null,"kind":"point","display":"0.18","units":"NTU","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.18"},"federalStandard":{"type":"MCL","value":1,"units":"NTU","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"plant:Turbidity Measurements","label":"Turbidity Measurements","kind":"plant","units":"NTU","average":null,"range":null,"ratio":0.03},{"context":"plant:Metropolitan Water District Diemer Filtration Plant","label":"Metropolitan Water District Diemer Filtration Plant","kind":"plant","units":"NTU","average":null,"range":null,"ratio":0.03}],"measurements":[{"value":0.18,"low":null,"high":null,"kind":"point","display":"0.18","units":"NTU","statisticType":"average","samplingContext":"system","rawVerbatim":"0.18"},{"value":0.23,"low":0.16,"high":0.23,"kind":"range","display":"0.16–0.23","units":"NTU","statisticType":"range","samplingContext":"system","rawVerbatim":"0.16 – 0.23"},{"value":0.03,"low":null,"high":null,"kind":"point","display":"0.03","units":"NTU","statisticType":"reported_level","samplingContext":"plant:Turbidity Measurements","rawVerbatim":"0.03"},{"value":0.19,"low":0.13,"high":0.19,"kind":"range","display":"0.13–0.19","units":"NTU","statisticType":"range","samplingContext":"system","rawVerbatim":"0.13 – 0.19"},{"value":0.03,"low":null,"high":null,"kind":"point","display":"0.03","units":"NTU","statisticType":"reported_level","samplingContext":"plant:Metropolitan Water District Diemer Filtration Plant","rawVerbatim":"0.03"},{"value":0.16,"low":null,"high":null,"kind":"point","display":"0.16","units":"NTU","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.16"}]}]},{"family":"radionuclide","familyLabel":"Radionuclides","contaminants":[{"analyteId":"gross_alpha","name":"Gross Alpha","family":"radionuclide","familyLabel":"Radionuclides","casrn":null,"whatItIs":"Gross alpha particle activity — a combined measure of alpha-emitting radioactive substances.","whyItMatters":"Long-term exposure above the federal limit increases cancer risk.","measured":{"value":2,"low":null,"high":null,"kind":"point","display":"2","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"2"},"federalStandard":{"type":"MCL","value":15,"units":"pCi/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":2,"low":null,"high":null,"kind":"point","display":"2","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"2"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"ND"},{"value":3,"low":2,"high":3,"kind":"range","display":"2–3","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2 – 3"},{"value":3,"low":0,"high":3,"kind":"range","display":"0–3","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 3"}]},{"analyteId":"gross_beta","name":"Gross Beta Particle Activity","family":"radionuclide","familyLabel":"Radionuclides","casrn":null,"whatItIs":"Gross beta particle activity — a combined measure of beta-emitting radioactive substances.","whyItMatters":"Long-term exposure above the federal screening level increases cancer risk.","measured":{"value":6.2,"low":null,"high":null,"kind":"point","display":"6.2","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"6.2"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":9,"low":0,"high":9,"kind":"range","display":"0–9","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 9"},{"value":6,"low":null,"high":null,"kind":"point","display":"6","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"6"},{"value":6.2,"low":null,"high":null,"kind":"point","display":"6.2","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"6.2"},{"value":7.1,"low":5.4,"high":7.1,"kind":"range","display":"5.4–7.1","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"5.4 – 7.1"}]},{"analyteId":"uranium","name":"Uranium","family":"radionuclide","familyLabel":"Radionuclides","casrn":"7440-61-1","whatItIs":"A naturally occurring radioactive metal from erosion of natural deposits.","whyItMatters":"Long-term exposure above the federal limit can damage the kidneys and increase cancer risk.","measured":{"value":2,"low":null,"high":null,"kind":"point","display":"2","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"2"},"federalStandard":{"type":"MCL","value":20,"units":"pCi/L","enforceable":true},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":3,"low":1,"high":3,"kind":"range","display":"1–3","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"1 – 3"},{"value":1.7,"low":1.5,"high":1.7,"kind":"range","display":"1.5–1.7","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"1.5 – 1.7"},{"value":1.6,"low":null,"high":null,"kind":"point","display":"1.6","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1.6"},{"value":2,"low":null,"high":null,"kind":"point","display":"2","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"2"}]}]}],"contaminants":[{"analyteId":"chlorine","name":"Chlorine","family":"disinfectant","familyLabel":"Disinfectants","casrn":null,"whatItIs":"A disinfectant added to drinking water to kill bacteria and viruses.","whyItMatters":"Effective and necessary, but high residual levels can cause taste and odor issues; the EPA caps the residual disinfectant level.","measured":{"value":68.5,"low":null,"high":null,"kind":"point","display":"68.5","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"68.5"},"federalStandard":{"type":"MCL","value":4000,"units":"ug/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":68.5,"low":null,"high":null,"kind":"point","display":"68.5","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"68.5"},{"value":120,"low":0,"high":120,"kind":"range","display":"0–120","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 120"}]},{"analyteId":"chlorite","name":"Chlorite","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":"14998-27-7","whatItIs":null,"whyItMatters":null,"measured":{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":true,"detectionLimit":0.05,"rawVerbatim":"<0.05"},"federalStandard":{"type":"MCL","value":1,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"<0.05"},{"value":0.08,"low":0,"high":0.08,"kind":"range","display":"0–0.08","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 0.08"}]},{"analyteId":"haa5","name":"HAA5","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":null,"whatItIs":"Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter.","whyItMatters":"Long-term exposure above the federal limit is associated with an increased cancer risk.","measured":{"value":21,"low":null,"high":null,"kind":"point","display":"21","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"21"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":8.1,"low":null,"high":null,"kind":"point","display":"8.1","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"8.1"},{"value":14.7,"low":null,"high":null,"kind":"point","display":"14.7","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"14.7"},{"value":21,"low":null,"high":null,"kind":"point","display":"21","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"21"},{"value":19,"low":5.6,"high":19,"kind":"range","display":"5.6–19","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"5.6 – 19"},{"value":26,"low":7.4,"high":26,"kind":"range","display":"7.4–26","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"7.4 – 26"},{"value":14,"low":6.2,"high":14,"kind":"range","display":"6.2–14","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"6.2 – 14"},{"value":29.7,"low":10.6,"high":29.7,"kind":"range","display":"10.6–29.7","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"10.6 – 29.7"},{"value":8.3,"low":null,"high":null,"kind":"point","display":"8.3","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"8.3"}]},{"analyteId":"tthm","name":"TTHM","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":null,"whatItIs":"Total trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter.","whyItMatters":"Long-term exposure above the federal limit is linked to liver, kidney, and central-nervous-system effects and increased cancer risk.","measured":{"value":51,"low":null,"high":null,"kind":"point","display":"51","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"51"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":51,"low":null,"high":null,"kind":"point","display":"51","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"51"},{"value":55,"low":31,"high":55,"kind":"range","display":"31–55","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"31 – 55"}]},{"analyteId":"chloride","name":"Chloride","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"16887-00-6","whatItIs":"A naturally occurring salt compound.","whyItMatters":"Regulated only as a secondary (cosmetic) standard; high levels cause a salty taste and can corrode pipes.","measured":{"value":112,"low":null,"high":null,"kind":"point","display":"112","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"112"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":101,"low":null,"high":null,"kind":"point","display":"101","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"101"},{"value":101,"low":null,"high":null,"kind":"point","display":"101","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"101"},{"value":104,"low":98,"high":104,"kind":"range","display":"98–104","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"98 – 104"},{"value":112,"low":null,"high":null,"kind":"point","display":"112","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"112"},{"value":103,"low":99.8,"high":103,"kind":"range","display":"99.8–103","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"99.8 – 103"},{"value":133,"low":103,"high":133,"kind":"range","display":"103–133","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"103 – 133"}]},{"analyteId":"fluoride","name":"Fluoride","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"16984-48-8","whatItIs":"A mineral often added to drinking water to help prevent tooth decay.","whyItMatters":"Beneficial at low levels, but long-term exposure above the federal limit can cause bone disease and tooth mottling.","measured":{"value":0.73,"low":null,"high":null,"kind":"point","display":"0.73","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"0.73"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.73,"low":null,"high":null,"kind":"point","display":"0.73","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.73"},{"value":0.34,"low":null,"high":null,"kind":"point","display":"0.34","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.34"},{"value":0.8,"low":0.7,"high":0.8,"kind":"range","display":"0.7–0.8","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.7 – 0.8"},{"value":0.73,"low":null,"high":null,"kind":"point","display":"0.73","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.73"},{"value":0.7,"low":null,"high":null,"kind":"point","display":"0.7","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.7"},{"value":0.35,"low":0.32,"high":0.35,"kind":"range","display":"0.32–0.35","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.32 – 0.35"}]},{"analyteId":"nitrate","name":"Nitrate","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"14797-55-8","whatItIs":"A compound from fertilizer runoff, septic systems, and erosion of natural deposits.","whyItMatters":"Levels above the federal limit can cause 'blue baby syndrome,' a serious oxygen-transport condition in infants.","measured":{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"1"},"federalStandard":{"type":"MCL","value":10,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"1"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1"}]},{"analyteId":"sulfate","name":"Sulfate","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"14808-79-8","whatItIs":"A naturally occurring mineral from rock and soil.","whyItMatters":"No health-based federal limit; high levels can have a laxative effect and a bitter taste.","measured":{"value":221,"low":null,"high":null,"kind":"point","display":"221","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"221"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":167,"low":null,"high":null,"kind":"point","display":"167","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"167"},{"value":225,"low":201,"high":225,"kind":"range","display":"201–225","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"201 – 225"},{"value":213,"low":null,"high":null,"kind":"point","display":"213","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"213"},{"value":200,"low":136,"high":200,"kind":"range","display":"136–200","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"136 – 200"},{"value":229,"low":213,"high":229,"kind":"range","display":"213–229","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"213 – 229"},{"value":221,"low":null,"high":null,"kind":"point","display":"221","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"221"}]},{"analyteId":"aluminum","name":"Aluminum","family":"metal","familyLabel":"Metals","casrn":"7429-90-5","whatItIs":"A common element sometimes used as a treatment coagulant.","whyItMatters":"Regulated only as a secondary (cosmetic) standard; high levels can discolor water.","measured":{"value":140,"low":null,"high":null,"kind":"point","display":"140","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"140"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":210,"low":85,"high":210,"kind":"range","display":"85–210","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"85 – 210"},{"value":0.14,"low":null,"high":null,"kind":"point","display":"0.14","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.14"},{"value":140,"low":null,"high":null,"kind":"point","display":"140","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"140"},{"value":0.21,"low":0.085,"high":0.21,"kind":"range","display":"0.085–0.21","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.085 – 0.21"}]},{"analyteId":"arsenic","name":"Arsenic","family":"metal","familyLabel":"Metals","casrn":"7440-38-2","whatItIs":"A naturally occurring element that also enters water from industry and agriculture.","whyItMatters":"A known human carcinogen; long-term exposure is linked to skin, bladder, and lung cancer.","measured":{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":true,"detectionLimit":2,"rawVerbatim":"<2"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"<2"},{"value":2.24,"low":0,"high":2.24,"kind":"range","display":"0–2.24","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 2.24"}]},{"analyteId":"barium","name":"Barium","family":"metal","familyLabel":"Metals","casrn":"7440-39-3","whatItIs":"A metal from erosion of natural deposits and industrial discharge.","whyItMatters":"Long-term exposure above the federal limit can raise blood pressure.","measured":{"value":0.107,"low":null,"high":null,"kind":"point","display":"0.107","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"0.107"},"federalStandard":{"type":"MCL","value":2,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.107,"low":null,"high":null,"kind":"point","display":"0.107","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.107"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"<0.1"},{"value":0.107,"low":null,"high":null,"kind":"point","display":"0.107","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.107"},{"value":0.107,"low":0,"high":0.107,"kind":"range","display":"0–0.107","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 0.107"}]},{"analyteId":"boron","name":"Boron","family":"metal","familyLabel":"Metals","casrn":"7440-42-8","whatItIs":"A naturally occurring element from rock and soil.","whyItMatters":"No enforceable federal limit; the EPA has issued a health advisory level.","measured":{"value":0.137,"low":null,"high":null,"kind":"point","display":"0.137","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"0.137"},"federalStandard":{"type":"NL","value":1,"units":"mg/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.141,"low":0.133,"high":0.141,"kind":"range","display":"0.133–0.141","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.133 – 0.141"},{"value":0.137,"low":null,"high":null,"kind":"point","display":"0.137","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.137"},{"value":0.13,"low":null,"high":null,"kind":"point","display":"0.13","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.13"},{"value":0.13,"low":null,"high":null,"kind":"point","display":"0.13","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.13"}]},{"analyteId":"calcium","name":"Calcium","family":"metal","familyLabel":"Metals","casrn":"7440-70-2","whatItIs":"A naturally occurring mineral that contributes to water hardness.","whyItMatters":"Not federally regulated for health; affects scaling and taste.","measured":{"value":71.6,"low":null,"high":null,"kind":"point","display":"71.6","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"71.6"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":54,"low":null,"high":null,"kind":"point","display":"54","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"54"},{"value":71.6,"low":null,"high":null,"kind":"point","display":"71.6","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"71.6"},{"value":68,"low":null,"high":null,"kind":"point","display":"68","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"68"},{"value":75,"low":43,"high":75,"kind":"range","display":"43–75","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"43 – 75"},{"value":73.3,"low":69.9,"high":73.3,"kind":"range","display":"69.9–73.3","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"69.9 – 73.3"},{"value":70,"low":66,"high":70,"kind":"range","display":"66–70","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"66 – 70"}]},{"analyteId":"copper","name":"Copper","family":"metal","familyLabel":"Metals","casrn":"7440-50-8","whatItIs":"A metal that enters water from corroding household plumbing.","whyItMatters":"Short-term exposure causes stomach distress; long-term exposure can damage the liver and kidneys.","measured":{"value":0.25,"low":null,"high":null,"kind":"point","display":"0.25","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0.25"},"federalStandard":{"type":"AL","value":1.3,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.25,"low":null,"high":null,"kind":"point","display":"0.25","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.25"}]},{"analyteId":"lead","name":"Lead","family":"metal","familyLabel":"Metals","casrn":"7439-92-1","whatItIs":"A toxic metal that leaches into water from old service lines, solder, and plumbing fixtures.","whyItMatters":"There is no safe level of lead; it harms brain development in children and raises blood pressure in adults. The EPA sets an action level, not a health goal above zero.","measured":{"value":0.0018,"low":null,"high":null,"kind":"point","display":"0.0018","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0.0018"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.0018,"low":null,"high":null,"kind":"point","display":"0.0018","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.0018"}]},{"analyteId":"magnesium","name":"Magnesium","family":"metal","familyLabel":"Metals","casrn":"7439-95-4","whatItIs":"A naturally occurring mineral that contributes to water hardness.","whyItMatters":"Not federally regulated for health; affects scaling and taste.","measured":{"value":27.6,"low":null,"high":null,"kind":"point","display":"27.6","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"27.6"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":25,"low":null,"high":null,"kind":"point","display":"25","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"25"},{"value":28.9,"low":26.2,"high":28.9,"kind":"range","display":"26.2–28.9","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"26.2 – 28.9"},{"value":27.6,"low":null,"high":null,"kind":"point","display":"27.6","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"27.6"},{"value":18,"low":null,"high":null,"kind":"point","display":"18","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"18"},{"value":26,"low":24,"high":26,"kind":"range","display":"24–26","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"24 – 26"},{"value":18,"low":null,"high":null,"kind":"point","display":"18","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"18"}]},{"analyteId":"manganese","name":"Manganese","family":"metal","familyLabel":"Metals","casrn":"7439-96-5","whatItIs":"A naturally occurring metal from soil and rock.","whyItMatters":"No enforceable federal limit; high levels stain fixtures and laundry and can affect taste, with a health advisory for infants.","measured":{"value":1.1,"low":null,"high":null,"kind":"point","display":"1.1","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"1.1"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.87,"low":null,"high":null,"kind":"point","display":"0.87","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.87"},{"value":1.1,"low":null,"high":null,"kind":"point","display":"1.1","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"1.1"},{"value":1.1,"low":null,"high":null,"kind":"point","display":"1.1","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1.1"},{"value":0.87,"low":null,"high":null,"kind":"point","display":"0.87","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.87"}]},{"analyteId":"potassium","name":"Potassium","family":"metal","familyLabel":"Metals","casrn":"7440-09-7","whatItIs":"A naturally occurring mineral from rock and soil.","whyItMatters":"Not federally regulated for health.","measured":{"value":5.14,"low":null,"high":null,"kind":"point","display":"5.14","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"5.14"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":5.14,"low":null,"high":null,"kind":"point","display":"5.14","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"5.14"},{"value":5.46,"low":4.82,"high":5.46,"kind":"range","display":"4.82–5.46","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"4.82 – 5.46"},{"value":4.8,"low":4.4,"high":4.8,"kind":"range","display":"4.4–4.8","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"4.4 – 4.8"},{"value":4.6,"low":null,"high":null,"kind":"point","display":"4.6","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"4.6"}]},{"analyteId":"sodium","name":"Sodium","family":"metal","familyLabel":"Metals","casrn":"7440-23-5","whatItIs":"A naturally occurring salt component.","whyItMatters":"Not federally regulated for health; relevant for people on sodium-restricted diets.","measured":{"value":98.8,"low":null,"high":null,"kind":"point","display":"98.8","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"98.8"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":70,"low":null,"high":null,"kind":"point","display":"70","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"70"},{"value":98.8,"low":null,"high":null,"kind":"point","display":"98.8","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"98.8"},{"value":102,"low":95,"high":102,"kind":"range","display":"95–102","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"95 – 102"},{"value":98,"low":null,"high":null,"kind":"point","display":"98","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"98"},{"value":70,"low":null,"high":null,"kind":"point","display":"70","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"70"},{"value":102,"low":95.5,"high":102,"kind":"range","display":"95.5–102","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"95.5 – 102"}]},{"analyteId":"chlorine_total","name":"Chlorine Total","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":1.5,"low":null,"high":null,"kind":"point","display":"1.5","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1.5"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":2.5,"low":0,"high":2.5,"kind":"range","display":"0–2.5","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 2.5"},{"value":1.5,"low":null,"high":null,"kind":"point","display":"1.5","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"1.5"}]},{"analyteId":"alkalinity","name":"Alkalinity","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of the water's capacity to neutralize acids.","whyItMatters":"Not federally regulated for health; relevant to corrosion control and treatment.","measured":{"value":126,"low":null,"high":null,"kind":"point","display":"126","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"126"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":127,"low":122,"high":127,"kind":"range","display":"122–127","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"122 – 127"},{"value":68,"low":null,"high":null,"kind":"point","display":"68","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"68"},{"value":127,"low":125,"high":127,"kind":"range","display":"125–127","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"125 – 127"},{"value":74.4,"low":59.6,"high":74.4,"kind":"range","display":"59.6–74.4","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"59.6 – 74.4"},{"value":125,"low":null,"high":null,"kind":"point","display":"125","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"125"},{"value":126,"low":null,"high":null,"kind":"point","display":"126","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"126"}]},{"analyteId":"color","name":"Color","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of visible tint in the water.","whyItMatters":"Regulated only as a secondary (cosmetic) standard.","measured":{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"1"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"1"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"1"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"1"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"1"}]},{"analyteId":"hardness","name":"Hardness","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of dissolved calcium and magnesium minerals.","whyItMatters":"Not federally regulated for health; affects scaling, soap use, and taste.","measured":{"value":292,"low":null,"high":null,"kind":"point","display":"292","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"292"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":17,"low":null,"high":null,"kind":"point","display":"17","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"17"},{"value":16,"low":null,"high":null,"kind":"point","display":"16","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"16"},{"value":278,"low":null,"high":null,"kind":"point","display":"278","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"278"},{"value":18,"low":16,"high":18,"kind":"range","display":"16–18","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"16 – 18"},{"value":220,"low":null,"high":null,"kind":"point","display":"220","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"220"},{"value":281,"low":275,"high":281,"kind":"range","display":"275–281","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"275 – 281"},{"value":302,"low":282,"high":302,"kind":"range","display":"282–302","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"282 – 302"},{"value":292,"low":null,"high":null,"kind":"point","display":"292","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"292"},{"value":231,"low":208,"high":231,"kind":"range","display":"208–231","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"208 – 231"},{"value":16,"low":null,"high":null,"kind":"point","display":"16","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"16"}]},{"analyteId":"odor","name":"Odor","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of detectable smell in the water.","whyItMatters":"Regulated only as a secondary (cosmetic) standard.","measured":{"value":3,"low":null,"high":null,"kind":"point","display":"3","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"3"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"1"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"1"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"1"},{"value":3,"low":null,"high":null,"kind":"point","display":"3","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"3"},{"value":3,"low":null,"high":null,"kind":"point","display":"3","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"3"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"1"}]},{"analyteId":"ph","name":"pH","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of how acidic or basic the water is.","whyItMatters":"Regulated only as a secondary standard; very low or high pH can corrode pipes or affect taste.","measured":{"value":8.2,"low":null,"high":null,"kind":"point","display":"8.2","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"8.2"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":7.98,"low":null,"high":null,"kind":"point","display":"7.98","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"7.98"},{"value":8.4,"low":8,"high":8.4,"kind":"range","display":"8–8.4","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"8 – 8.4"},{"value":8.18,"low":7.91,"high":8.18,"kind":"range","display":"7.91–8.18","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"7.91 – 8.18"},{"value":8.2,"low":null,"high":null,"kind":"point","display":"8.2","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"8.2"},{"value":8.1,"low":null,"high":null,"kind":"point","display":"8.1","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"8.1"},{"value":8.1,"low":null,"high":null,"kind":"point","display":"8.1","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"8.1"}]},{"analyteId":"specific_conductance","name":"Specific Conductance","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of how well water conducts electricity, which tracks dissolved mineral content.","whyItMatters":"Not federally regulated for health; used as a proxy for total dissolved solids.","measured":{"value":991,"low":null,"high":null,"kind":"point","display":"991","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"991"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1010,"low":965,"high":1010,"kind":"range","display":"965–1010","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"965 – 1,010"},{"value":764,"low":755,"high":764,"kind":"range","display":"755–764","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"755 – 764"},{"value":988,"low":null,"high":null,"kind":"point","display":"988","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"988"},{"value":760,"low":null,"high":null,"kind":"point","display":"760","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"760"},{"value":1006,"low":979,"high":1006,"kind":"range","display":"979–1006","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"979 – 1,006"},{"value":991,"low":null,"high":null,"kind":"point","display":"991","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"991"}]},{"analyteId":"toc","name":"TOC","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"Total organic carbon — a measure of organic material dissolved in the water.","whyItMatters":"Not harmful itself, but it is the raw material that forms disinfection byproducts; removal is a treatment requirement.","measured":{"value":2.5,"low":null,"high":null,"kind":"point","display":"2.5","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"2.5"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":2.6,"low":2.3,"high":2.6,"kind":"range","display":"2.3–2.6","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2.3 – 2.6"},{"value":2.1,"low":null,"high":null,"kind":"point","display":"2.1","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"2.1"},{"value":2.5,"low":null,"high":null,"kind":"point","display":"2.5","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"2.5"},{"value":2.1,"low":2,"high":2.1,"kind":"range","display":"2–2.1","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2 – 2.1"}]},{"analyteId":"tds","name":"Total Dissolved Solids","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"Total dissolved solids — the combined content of all dissolved minerals and salts.","whyItMatters":"Regulated only as a secondary (cosmetic) standard; high levels affect taste and hardness.","measured":{"value":628,"low":null,"high":null,"kind":"point","display":"628","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"628"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":520,"low":445,"high":520,"kind":"range","display":"445–520","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"445 – 520"},{"value":628,"low":null,"high":null,"kind":"point","display":"628","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"628"},{"value":496,"low":null,"high":null,"kind":"point","display":"496","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"496"},{"value":627,"low":null,"high":null,"kind":"point","display":"627","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"627"},{"value":650,"low":604,"high":650,"kind":"range","display":"604–650","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"604 – 650"},{"value":648,"low":608,"high":648,"kind":"range","display":"608–648","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"608 – 648"}]},{"analyteId":"turbidity","name":"Turbidity","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of cloudiness from suspended particles in the water.","whyItMatters":"High turbidity can shelter microbes from disinfection; the EPA enforces it through a treatment-technique standard.","measured":{"value":0.18,"low":null,"high":null,"kind":"point","display":"0.18","units":"NTU","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.18"},"federalStandard":{"type":"MCL","value":1,"units":"NTU","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"plant:Turbidity Measurements","label":"Turbidity Measurements","kind":"plant","units":"NTU","average":null,"range":null,"ratio":0.03},{"context":"plant:Metropolitan Water District Diemer Filtration Plant","label":"Metropolitan Water District Diemer Filtration Plant","kind":"plant","units":"NTU","average":null,"range":null,"ratio":0.03}],"measurements":[{"value":0.18,"low":null,"high":null,"kind":"point","display":"0.18","units":"NTU","statisticType":"average","samplingContext":"system","rawVerbatim":"0.18"},{"value":0.23,"low":0.16,"high":0.23,"kind":"range","display":"0.16–0.23","units":"NTU","statisticType":"range","samplingContext":"system","rawVerbatim":"0.16 – 0.23"},{"value":0.03,"low":null,"high":null,"kind":"point","display":"0.03","units":"NTU","statisticType":"reported_level","samplingContext":"plant:Turbidity Measurements","rawVerbatim":"0.03"},{"value":0.19,"low":0.13,"high":0.19,"kind":"range","display":"0.13–0.19","units":"NTU","statisticType":"range","samplingContext":"system","rawVerbatim":"0.13 – 0.19"},{"value":0.03,"low":null,"high":null,"kind":"point","display":"0.03","units":"NTU","statisticType":"reported_level","samplingContext":"plant:Metropolitan Water District Diemer Filtration Plant","rawVerbatim":"0.03"},{"value":0.16,"low":null,"high":null,"kind":"point","display":"0.16","units":"NTU","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.16"}]},{"analyteId":"gross_alpha","name":"Gross Alpha","family":"radionuclide","familyLabel":"Radionuclides","casrn":null,"whatItIs":"Gross alpha particle activity — a combined measure of alpha-emitting radioactive substances.","whyItMatters":"Long-term exposure above the federal limit increases cancer risk.","measured":{"value":2,"low":null,"high":null,"kind":"point","display":"2","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"2"},"federalStandard":{"type":"MCL","value":15,"units":"pCi/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":2,"low":null,"high":null,"kind":"point","display":"2","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"2"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"ND"},{"value":3,"low":2,"high":3,"kind":"range","display":"2–3","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2 – 3"},{"value":3,"low":0,"high":3,"kind":"range","display":"0–3","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 3"}]},{"analyteId":"gross_beta","name":"Gross Beta Particle Activity","family":"radionuclide","familyLabel":"Radionuclides","casrn":null,"whatItIs":"Gross beta particle activity — a combined measure of beta-emitting radioactive substances.","whyItMatters":"Long-term exposure above the federal screening level increases cancer risk.","measured":{"value":6.2,"low":null,"high":null,"kind":"point","display":"6.2","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"6.2"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":9,"low":0,"high":9,"kind":"range","display":"0–9","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 9"},{"value":6,"low":null,"high":null,"kind":"point","display":"6","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"6"},{"value":6.2,"low":null,"high":null,"kind":"point","display":"6.2","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"6.2"},{"value":7.1,"low":5.4,"high":7.1,"kind":"range","display":"5.4–7.1","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"5.4 – 7.1"}]},{"analyteId":"uranium","name":"Uranium","family":"radionuclide","familyLabel":"Radionuclides","casrn":"7440-61-1","whatItIs":"A naturally occurring radioactive metal from erosion of natural deposits.","whyItMatters":"Long-term exposure above the federal limit can damage the kidneys and increase cancer risk.","measured":{"value":2,"low":null,"high":null,"kind":"point","display":"2","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"2"},"federalStandard":{"type":"MCL","value":20,"units":"pCi/L","enforceable":true},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":3,"low":1,"high":3,"kind":"range","display":"1–3","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"1 – 3"},{"value":1.7,"low":1.5,"high":1.7,"kind":"range","display":"1.5–1.7","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"1.5 – 1.7"},{"value":1.6,"low":null,"high":null,"kind":"point","display":"1.6","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1.6"},{"value":2,"low":null,"high":null,"kind":"point","display":"2","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"2"}]}]}}