{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-06-04T01:44:02.828Z"},"system":{"slug":"ca__city-of-brea__CA3010002","name":"City of Brea — Brea, Ca","state":"CA","year":2023,"url":"https://www.thewatermap.com/water/ca/brea-brea-ca/2023","apiUrl":"https://www.thewatermap.com/api/water/ca/brea-brea-ca/2023","markdownUrl":"https://www.thewatermap.com/water/ca/brea-brea-ca/2023/llms.txt","coordinates":{"latitude":33.9170444,"longitude":-117.888855},"contaminantsMeasured":37,"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":1.1,"low":null,"high":null,"kind":"point","display":"1.1","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"1.1"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":2.2,"low":0.2,"high":2.2,"kind":"range","display":"0.2–2.2","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.2 - 2.2"},{"value":1.1,"low":null,"high":null,"kind":"point","display":"1.1","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1.1"}]}]},{"family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","contaminants":[{"analyteId":"bromate","name":"Bromate","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":"15541-45-4","whatItIs":"A disinfection byproduct formed when bromide-containing water is treated with ozone.","whyItMatters":"Classified as a probable human carcinogen; the EPA sets a strict maximum contaminant level.","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":null,"rawVerbatim":"ND"},"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":"ND"},{"value":1.6,"low":0,"high":1.6,"kind":"range","display":"0–1.6","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 1.6"}]},{"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":6,"low":null,"high":null,"kind":"point","display":"6","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"6"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":6,"low":null,"high":null,"kind":"point","display":"6","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"6"},{"value":5.9,"low":1.2,"high":5.9,"kind":"range","display":"1.2–5.9","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"1.2 - 5.9"}]},{"analyteId":"perchlorate","name":"Perchlorate","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":"14797-73-0","whatItIs":"A chemical used in rocket fuel and fireworks that can also form during disinfection.","whyItMatters":"Can interfere with thyroid hormone production; has no national enforceable limit but is regulated in some states.","measured":{"value":1.4,"low":null,"high":null,"kind":"point","display":"1.4","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"1.4"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1.4,"low":null,"high":null,"kind":"point","display":"1.4","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1.4"},{"value":1.8,"low":0,"high":1.8,"kind":"range","display":"0–1.8","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 1.8"}]},{"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":26,"low":null,"high":null,"kind":"point","display":"26","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"26"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":34,"low":3.9,"high":34,"kind":"range","display":"3.9–34","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"3.9 - 34"},{"value":26,"low":null,"high":null,"kind":"point","display":"26","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"26"}]}]},{"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":104,"low":null,"high":null,"kind":"point","display":"104","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"104"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":104,"low":null,"high":null,"kind":"point","display":"104","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"104"},{"value":116,"low":93,"high":116,"kind":"range","display":"93–116","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"93 - 116"},{"value":26,"low":null,"high":null,"kind":"point","display":"26","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"26"},{"value":28,"low":23,"high":28,"kind":"range","display":"23–28","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"23 - 28"}]},{"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":0.7,"low":null,"high":null,"kind":"point","display":"0.7","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"0.7"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.33,"low":null,"high":null,"kind":"point","display":"0.33","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.33"},{"value":0.34,"low":0.31,"high":0.34,"kind":"range","display":"0.31–0.34","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.31 - 0.34"},{"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":0.8,"low":0.6,"high":0.8,"kind":"range","display":"0.6–0.8","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.6 - 0.8"}]},{"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":3.5,"low":null,"high":null,"kind":"point","display":"3.5","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"3.5"},"federalStandard":{"type":"MCL","value":10,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":4,"low":2.6,"high":4,"kind":"range","display":"2.6–4","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2.6 - 4"},{"value":3.5,"low":null,"high":null,"kind":"point","display":"3.5","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"3.5"}]},{"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":224,"low":null,"high":null,"kind":"point","display":"224","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"224"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":253,"low":196,"high":253,"kind":"range","display":"196–253","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"196 - 253"},{"value":224,"low":null,"high":null,"kind":"point","display":"224","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"224"},{"value":50,"low":45,"high":50,"kind":"range","display":"45–50","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"45 - 50"},{"value":48,"low":null,"high":null,"kind":"point","display":"48","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"48"}]}]},{"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":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":110,"low":0,"high":110,"kind":"range","display":"0–110","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 110"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"ND"},{"value":0.11,"low":0,"high":0.11,"kind":"range","display":"0–0.11","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 0.11"}]},{"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":0.14,"low":null,"high":null,"kind":"point","display":"0.14","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"0.14"},"federalStandard":{"type":"MCL","value":2,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.124,"low":null,"high":null,"kind":"point","display":"0.124","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.124"},{"value":0.14,"low":null,"high":null,"kind":"point","display":"0.14","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.14"},{"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":0.124,"low":null,"high":null,"kind":"point","display":"0.124","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.124"}]},{"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":0.14,"low":null,"high":null,"kind":"point","display":"0.14","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"0.14"},"federalStandard":{"type":"NL","value":1,"units":"mg/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"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":0.14,"low":null,"high":null,"kind":"point","display":"0.14","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.14"}]},{"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":72,"low":null,"high":null,"kind":"point","display":"72","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"72"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":72,"low":null,"high":null,"kind":"point","display":"72","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"72"},{"value":74,"low":69,"high":74,"kind":"range","display":"69–74","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"69 - 74"},{"value":78,"low":58,"high":78,"kind":"range","display":"58–78","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"58 - 78"},{"value":68,"low":null,"high":null,"kind":"point","display":"68","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"68"}]},{"analyteId":"chromium_hex","name":"Chromium, Hexavalent","family":"metal","familyLabel":"Metals","casrn":"18540-29-9","whatItIs":"Hexavalent chromium ('chromium-6') — the more toxic form of chromium.","whyItMatters":"A known carcinogen by inhalation; regulated nationally only within the total-chromium limit, with stricter limits in some states.","measured":{"value":3,"low":null,"high":null,"kind":"point","display":"3","units":"ug/L","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":3,"low":null,"high":null,"kind":"point","display":"3","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"3"},{"value":3.4,"low":2.6,"high":3.4,"kind":"range","display":"2.6–3.4","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2.6 - 3.4"}]},{"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":0.23,"low":null,"high":null,"kind":"point","display":"0.23","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0.23"},"federalStandard":{"type":"AL","value":1.3,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.23,"low":null,"high":null,"kind":"point","display":"0.23","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.23"}]},{"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,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":null,"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"ND"}]},{"analyteId":"lithium","name":"Lithium","family":"metal","familyLabel":"Metals","casrn":"7439-93-2","whatItIs":"A naturally occurring element found in some groundwater.","whyItMatters":"No enforceable federal limit; on the EPA contaminant candidate list for further study.","measured":{"value":28,"low":null,"high":null,"kind":"point","display":"28","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"28"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":28,"low":null,"high":null,"kind":"point","display":"28","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"28"},{"value":51,"low":0,"high":51,"kind":"range","display":"0–51","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 51"},{"value":11,"low":null,"high":null,"kind":"point","display":"11","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"11"},{"value":56,"low":0,"high":56,"kind":"range","display":"0–56","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 56"}]},{"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":26,"low":null,"high":null,"kind":"point","display":"26","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"26"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":29,"low":22,"high":29,"kind":"range","display":"22–29","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"22 - 29"},{"value":26,"low":null,"high":null,"kind":"point","display":"26","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"26"}]},{"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":4.9,"low":null,"high":null,"kind":"point","display":"4.9","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"4.9"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":4.9,"low":null,"high":null,"kind":"point","display":"4.9","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"4.9"},{"value":5.4,"low":4.4,"high":5.4,"kind":"range","display":"4.4–5.4","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"4.4 - 5.4"},{"value":3.5,"low":null,"high":null,"kind":"point","display":"3.5","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"3.5"},{"value":3.7,"low":3.3,"high":3.7,"kind":"range","display":"3.3–3.7","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"3.3 - 3.7"}]},{"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":103,"low":null,"high":null,"kind":"point","display":"103","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"103"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":116,"low":90,"high":116,"kind":"range","display":"90–116","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"90 - 116"},{"value":19,"low":null,"high":null,"kind":"point","display":"19","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"19"},{"value":103,"low":null,"high":null,"kind":"point","display":"103","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"103"},{"value":20,"low":17,"high":20,"kind":"range","display":"17–20","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"17 - 20"}]}]},{"family":"other","familyLabel":"Other","contaminants":[{"analyteId":"nitrate_nitrite","name":"Nitrate Nitrite","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":3.5,"low":null,"high":null,"kind":"point","display":"3.5","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"3.5"},"federalStandard":{"type":"MCL","value":10,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":4,"low":2.6,"high":4,"kind":"range","display":"2.6–4","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2.6 - 4"},{"value":3.5,"low":null,"high":null,"kind":"point","display":"3.5","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"3.5"}]},{"analyteId":"pce","name":"Pce","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":0.56,"low":null,"high":null,"kind":"point","display":"0.56","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"0.56"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.56,"low":null,"high":null,"kind":"point","display":"0.56","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.56"},{"value":1.1,"low":0,"high":1.1,"kind":"range","display":"0–1.1","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 1.1"}]},{"analyteId":"tce","name":"Tce","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":1.5,"low":null,"high":null,"kind":"point","display":"1.5","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"1.5"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1.5,"low":null,"high":null,"kind":"point","display":"1.5","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1.5"},{"value":2.7,"low":0,"high":2.7,"kind":"range","display":"0–2.7","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 2.7"}]}]},{"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":175,"low":null,"high":null,"kind":"point","display":"175","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"175"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":180,"low":170,"high":180,"kind":"range","display":"170–180","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"170 - 180"},{"value":114,"low":null,"high":null,"kind":"point","display":"114","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"114"},{"value":123,"low":105,"high":123,"kind":"range","display":"105–123","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"105 - 123"},{"value":175,"low":null,"high":null,"kind":"point","display":"175","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"175"}]},{"analyteId":"bicarbonate","name":"Bicarbonate","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":"71-52-3","whatItIs":null,"whyItMatters":null,"measured":{"value":210,"low":null,"high":null,"kind":"point","display":"210","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"210"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":210,"low":null,"high":null,"kind":"point","display":"210","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"210"},{"value":210,"low":null,"high":null,"kind":"point","display":"210","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"210"}]},{"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":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":3,"low":null,"high":null,"kind":"point","display":"3","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"3"},{"value":2,"low":null,"high":null,"kind":"point","display":"2","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"2"},{"value":5,"low":3,"high":5,"kind":"range","display":"3–5","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"3 - 5"},{"value":2,"low":1,"high":2,"kind":"range","display":"1–2","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"1 - 2"}]},{"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":270,"low":null,"high":null,"kind":"point","display":"270","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"270"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":230,"low":null,"high":null,"kind":"point","display":"230","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"230"},{"value":305,"low":235,"high":305,"kind":"range","display":"235–305","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"235 - 305"},{"value":240,"low":220,"high":240,"kind":"range","display":"220–240","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"220 - 240"},{"value":16,"low":null,"high":null,"kind":"point","display":"16","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"16"},{"value":18,"low":14,"high":18,"kind":"range","display":"14–18","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"14 - 18"},{"value":270,"low":null,"high":null,"kind":"point","display":"270","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"270"}]},{"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":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":"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"},{"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"}]},{"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":8.2,"low":null,"high":null,"kind":"point","display":"8.2","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"8.2"},{"value":7.7,"low":null,"high":null,"kind":"point","display":"7.7","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"7.7"},{"value":7.8,"low":7.6,"high":7.8,"kind":"range","display":"7.6–7.8","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"7.6 - 7.8"},{"value":8.2,"low":null,"high":null,"kind":"point","display":"8.2","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"8.2"}]},{"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":979,"low":null,"high":null,"kind":"point","display":"979","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"979"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":540,"low":null,"high":null,"kind":"point","display":"540","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"540"},{"value":1070,"low":888,"high":1070,"kind":"range","display":"888–1070","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"888 - 1,070"},{"value":560,"low":520,"high":560,"kind":"range","display":"520–560","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"520 - 560"},{"value":979,"low":null,"high":null,"kind":"point","display":"979","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"979"}]},{"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":2.4,"low":null,"high":null,"kind":"point","display":"2.4","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"2.4"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":2.4,"low":null,"high":null,"kind":"point","display":"2.4","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"2.4"},{"value":2.5,"low":2,"high":2.5,"kind":"range","display":"2–2.5","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2 - 2.5"}]},{"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":621,"low":null,"high":null,"kind":"point","display":"621","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"621"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":360,"low":310,"high":360,"kind":"range","display":"310–360","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"310 - 360"},{"value":335,"low":null,"high":null,"kind":"point","display":"335","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"335"},{"value":621,"low":null,"high":null,"kind":"point","display":"621","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"621"},{"value":686,"low":556,"high":686,"kind":"range","display":"556–686","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"556 - 686"}]},{"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":0.1,"low":null,"high":null,"kind":"point","display":"0.1","units":"NTU","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"0.1"},"federalStandard":{"type":"MCL","value":1,"units":"NTU","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.1,"low":null,"high":null,"kind":"point","display":"0.1","units":"NTU","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.1"},{"value":0.06,"low":null,"high":null,"kind":"point","display":"0.06","units":"NTU","statisticType":"reported_level","samplingContext":"plant:Metropolitan Water District Diemer Filtration Plant","rawVerbatim":"0.06"},{"value":0.81,"low":0,"high":0.81,"kind":"range","display":"0–0.81","units":"NTU","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 0.81"}]}]},{"family":"radionuclide","familyLabel":"Radionuclides","contaminants":[{"analyteId":"combined_radium","name":"Combined Radium","family":"radionuclide","familyLabel":"Radionuclides","casrn":null,"whatItIs":"Combined radium-226 and radium-228 — naturally occurring radioactive elements.","whyItMatters":"Long-term exposure above the federal limit increases the risk of bone cancer.","measured":{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":{"type":"MCL","value":5,"units":"pCi/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1,"low":0,"high":1,"kind":"range","display":"0–1","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 1"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"ND"}]},{"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":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":{"type":"MCL","value":15,"units":"pCi/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":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"ND"},{"value":5,"low":0,"high":5,"kind":"range","display":"0–5","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 5"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"ND"},{"value":3.8,"low":0,"high":3.8,"kind":"range","display":"0–3.8","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 3.8"}]},{"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":4,"low":null,"high":null,"kind":"point","display":"4","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"4"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":5,"low":0,"high":5,"kind":"range","display":"0–5","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 5"},{"value":4,"low":null,"high":null,"kind":"point","display":"4","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"4"}]},{"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":2.6,"low":null,"high":null,"kind":"point","display":"2.6","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"2.6"},"federalStandard":{"type":"MCL","value":20,"units":"pCi/L","enforceable":true},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":2.6,"low":null,"high":null,"kind":"point","display":"2.6","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"2.6"},{"value":3,"low":0,"high":3,"kind":"range","display":"0–3","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 3"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1"},{"value":3,"low":2.2,"high":3,"kind":"range","display":"2.2–3","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2.2 - 3"}]}]}],"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":1.1,"low":null,"high":null,"kind":"point","display":"1.1","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"1.1"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":2.2,"low":0.2,"high":2.2,"kind":"range","display":"0.2–2.2","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.2 - 2.2"},{"value":1.1,"low":null,"high":null,"kind":"point","display":"1.1","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1.1"}]},{"analyteId":"bromate","name":"Bromate","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":"15541-45-4","whatItIs":"A disinfection byproduct formed when bromide-containing water is treated with ozone.","whyItMatters":"Classified as a probable human carcinogen; the EPA sets a strict maximum contaminant level.","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":null,"rawVerbatim":"ND"},"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":"ND"},{"value":1.6,"low":0,"high":1.6,"kind":"range","display":"0–1.6","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 1.6"}]},{"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":6,"low":null,"high":null,"kind":"point","display":"6","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"6"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":6,"low":null,"high":null,"kind":"point","display":"6","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"6"},{"value":5.9,"low":1.2,"high":5.9,"kind":"range","display":"1.2–5.9","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"1.2 - 5.9"}]},{"analyteId":"perchlorate","name":"Perchlorate","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":"14797-73-0","whatItIs":"A chemical used in rocket fuel and fireworks that can also form during disinfection.","whyItMatters":"Can interfere with thyroid hormone production; has no national enforceable limit but is regulated in some states.","measured":{"value":1.4,"low":null,"high":null,"kind":"point","display":"1.4","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"1.4"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1.4,"low":null,"high":null,"kind":"point","display":"1.4","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1.4"},{"value":1.8,"low":0,"high":1.8,"kind":"range","display":"0–1.8","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 1.8"}]},{"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":26,"low":null,"high":null,"kind":"point","display":"26","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"26"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":34,"low":3.9,"high":34,"kind":"range","display":"3.9–34","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"3.9 - 34"},{"value":26,"low":null,"high":null,"kind":"point","display":"26","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"26"}]},{"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":104,"low":null,"high":null,"kind":"point","display":"104","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"104"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":104,"low":null,"high":null,"kind":"point","display":"104","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"104"},{"value":116,"low":93,"high":116,"kind":"range","display":"93–116","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"93 - 116"},{"value":26,"low":null,"high":null,"kind":"point","display":"26","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"26"},{"value":28,"low":23,"high":28,"kind":"range","display":"23–28","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"23 - 28"}]},{"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":0.7,"low":null,"high":null,"kind":"point","display":"0.7","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"0.7"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.33,"low":null,"high":null,"kind":"point","display":"0.33","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.33"},{"value":0.34,"low":0.31,"high":0.34,"kind":"range","display":"0.31–0.34","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.31 - 0.34"},{"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":0.8,"low":0.6,"high":0.8,"kind":"range","display":"0.6–0.8","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.6 - 0.8"}]},{"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":3.5,"low":null,"high":null,"kind":"point","display":"3.5","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"3.5"},"federalStandard":{"type":"MCL","value":10,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":4,"low":2.6,"high":4,"kind":"range","display":"2.6–4","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2.6 - 4"},{"value":3.5,"low":null,"high":null,"kind":"point","display":"3.5","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"3.5"}]},{"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":224,"low":null,"high":null,"kind":"point","display":"224","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"224"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":253,"low":196,"high":253,"kind":"range","display":"196–253","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"196 - 253"},{"value":224,"low":null,"high":null,"kind":"point","display":"224","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"224"},{"value":50,"low":45,"high":50,"kind":"range","display":"45–50","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"45 - 50"},{"value":48,"low":null,"high":null,"kind":"point","display":"48","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"48"}]},{"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":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":110,"low":0,"high":110,"kind":"range","display":"0–110","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 110"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"ND"},{"value":0.11,"low":0,"high":0.11,"kind":"range","display":"0–0.11","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 0.11"}]},{"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":0.14,"low":null,"high":null,"kind":"point","display":"0.14","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"0.14"},"federalStandard":{"type":"MCL","value":2,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.124,"low":null,"high":null,"kind":"point","display":"0.124","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.124"},{"value":0.14,"low":null,"high":null,"kind":"point","display":"0.14","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.14"},{"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":0.124,"low":null,"high":null,"kind":"point","display":"0.124","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.124"}]},{"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":0.14,"low":null,"high":null,"kind":"point","display":"0.14","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"0.14"},"federalStandard":{"type":"NL","value":1,"units":"mg/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"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":0.14,"low":null,"high":null,"kind":"point","display":"0.14","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.14"}]},{"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":72,"low":null,"high":null,"kind":"point","display":"72","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"72"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":72,"low":null,"high":null,"kind":"point","display":"72","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"72"},{"value":74,"low":69,"high":74,"kind":"range","display":"69–74","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"69 - 74"},{"value":78,"low":58,"high":78,"kind":"range","display":"58–78","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"58 - 78"},{"value":68,"low":null,"high":null,"kind":"point","display":"68","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"68"}]},{"analyteId":"chromium_hex","name":"Chromium, Hexavalent","family":"metal","familyLabel":"Metals","casrn":"18540-29-9","whatItIs":"Hexavalent chromium ('chromium-6') — the more toxic form of chromium.","whyItMatters":"A known carcinogen by inhalation; regulated nationally only within the total-chromium limit, with stricter limits in some states.","measured":{"value":3,"low":null,"high":null,"kind":"point","display":"3","units":"ug/L","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":3,"low":null,"high":null,"kind":"point","display":"3","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"3"},{"value":3.4,"low":2.6,"high":3.4,"kind":"range","display":"2.6–3.4","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2.6 - 3.4"}]},{"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":0.23,"low":null,"high":null,"kind":"point","display":"0.23","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0.23"},"federalStandard":{"type":"AL","value":1.3,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.23,"low":null,"high":null,"kind":"point","display":"0.23","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.23"}]},{"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,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":null,"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"ND"}]},{"analyteId":"lithium","name":"Lithium","family":"metal","familyLabel":"Metals","casrn":"7439-93-2","whatItIs":"A naturally occurring element found in some groundwater.","whyItMatters":"No enforceable federal limit; on the EPA contaminant candidate list for further study.","measured":{"value":28,"low":null,"high":null,"kind":"point","display":"28","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"28"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":28,"low":null,"high":null,"kind":"point","display":"28","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"28"},{"value":51,"low":0,"high":51,"kind":"range","display":"0–51","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 51"},{"value":11,"low":null,"high":null,"kind":"point","display":"11","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"11"},{"value":56,"low":0,"high":56,"kind":"range","display":"0–56","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 56"}]},{"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":26,"low":null,"high":null,"kind":"point","display":"26","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"26"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":29,"low":22,"high":29,"kind":"range","display":"22–29","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"22 - 29"},{"value":26,"low":null,"high":null,"kind":"point","display":"26","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"26"}]},{"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":4.9,"low":null,"high":null,"kind":"point","display":"4.9","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"4.9"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":4.9,"low":null,"high":null,"kind":"point","display":"4.9","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"4.9"},{"value":5.4,"low":4.4,"high":5.4,"kind":"range","display":"4.4–5.4","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"4.4 - 5.4"},{"value":3.5,"low":null,"high":null,"kind":"point","display":"3.5","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"3.5"},{"value":3.7,"low":3.3,"high":3.7,"kind":"range","display":"3.3–3.7","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"3.3 - 3.7"}]},{"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":103,"low":null,"high":null,"kind":"point","display":"103","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"103"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":116,"low":90,"high":116,"kind":"range","display":"90–116","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"90 - 116"},{"value":19,"low":null,"high":null,"kind":"point","display":"19","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"19"},{"value":103,"low":null,"high":null,"kind":"point","display":"103","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"103"},{"value":20,"low":17,"high":20,"kind":"range","display":"17–20","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"17 - 20"}]},{"analyteId":"nitrate_nitrite","name":"Nitrate Nitrite","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":3.5,"low":null,"high":null,"kind":"point","display":"3.5","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"3.5"},"federalStandard":{"type":"MCL","value":10,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":4,"low":2.6,"high":4,"kind":"range","display":"2.6–4","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2.6 - 4"},{"value":3.5,"low":null,"high":null,"kind":"point","display":"3.5","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"3.5"}]},{"analyteId":"pce","name":"Pce","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":0.56,"low":null,"high":null,"kind":"point","display":"0.56","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"0.56"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.56,"low":null,"high":null,"kind":"point","display":"0.56","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.56"},{"value":1.1,"low":0,"high":1.1,"kind":"range","display":"0–1.1","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 1.1"}]},{"analyteId":"tce","name":"Tce","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":1.5,"low":null,"high":null,"kind":"point","display":"1.5","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"1.5"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1.5,"low":null,"high":null,"kind":"point","display":"1.5","units":"ug/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1.5"},{"value":2.7,"low":0,"high":2.7,"kind":"range","display":"0–2.7","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 2.7"}]},{"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":175,"low":null,"high":null,"kind":"point","display":"175","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"175"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":180,"low":170,"high":180,"kind":"range","display":"170–180","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"170 - 180"},{"value":114,"low":null,"high":null,"kind":"point","display":"114","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"114"},{"value":123,"low":105,"high":123,"kind":"range","display":"105–123","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"105 - 123"},{"value":175,"low":null,"high":null,"kind":"point","display":"175","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"175"}]},{"analyteId":"bicarbonate","name":"Bicarbonate","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":"71-52-3","whatItIs":null,"whyItMatters":null,"measured":{"value":210,"low":null,"high":null,"kind":"point","display":"210","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"210"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":210,"low":null,"high":null,"kind":"point","display":"210","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"210"},{"value":210,"low":null,"high":null,"kind":"point","display":"210","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"210"}]},{"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":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":3,"low":null,"high":null,"kind":"point","display":"3","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"3"},{"value":2,"low":null,"high":null,"kind":"point","display":"2","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"2"},{"value":5,"low":3,"high":5,"kind":"range","display":"3–5","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"3 - 5"},{"value":2,"low":1,"high":2,"kind":"range","display":"1–2","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"1 - 2"}]},{"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":270,"low":null,"high":null,"kind":"point","display":"270","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"270"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":230,"low":null,"high":null,"kind":"point","display":"230","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"230"},{"value":305,"low":235,"high":305,"kind":"range","display":"235–305","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"235 - 305"},{"value":240,"low":220,"high":240,"kind":"range","display":"220–240","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"220 - 240"},{"value":16,"low":null,"high":null,"kind":"point","display":"16","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"16"},{"value":18,"low":14,"high":18,"kind":"range","display":"14–18","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"14 - 18"},{"value":270,"low":null,"high":null,"kind":"point","display":"270","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"270"}]},{"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":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":"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"},{"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"}]},{"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":8.2,"low":null,"high":null,"kind":"point","display":"8.2","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"8.2"},{"value":7.7,"low":null,"high":null,"kind":"point","display":"7.7","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"7.7"},{"value":7.8,"low":7.6,"high":7.8,"kind":"range","display":"7.6–7.8","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"7.6 - 7.8"},{"value":8.2,"low":null,"high":null,"kind":"point","display":"8.2","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"8.2"}]},{"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":979,"low":null,"high":null,"kind":"point","display":"979","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"979"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":540,"low":null,"high":null,"kind":"point","display":"540","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"540"},{"value":1070,"low":888,"high":1070,"kind":"range","display":"888–1070","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"888 - 1,070"},{"value":560,"low":520,"high":560,"kind":"range","display":"520–560","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"520 - 560"},{"value":979,"low":null,"high":null,"kind":"point","display":"979","units":null,"statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"979"}]},{"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":2.4,"low":null,"high":null,"kind":"point","display":"2.4","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"2.4"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":2.4,"low":null,"high":null,"kind":"point","display":"2.4","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"2.4"},{"value":2.5,"low":2,"high":2.5,"kind":"range","display":"2–2.5","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2 - 2.5"}]},{"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":621,"low":null,"high":null,"kind":"point","display":"621","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"621"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":360,"low":310,"high":360,"kind":"range","display":"310–360","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"310 - 360"},{"value":335,"low":null,"high":null,"kind":"point","display":"335","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"335"},{"value":621,"low":null,"high":null,"kind":"point","display":"621","units":"mg/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"621"},{"value":686,"low":556,"high":686,"kind":"range","display":"556–686","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"556 - 686"}]},{"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":0.1,"low":null,"high":null,"kind":"point","display":"0.1","units":"NTU","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"0.1"},"federalStandard":{"type":"MCL","value":1,"units":"NTU","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.1,"low":null,"high":null,"kind":"point","display":"0.1","units":"NTU","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"0.1"},{"value":0.06,"low":null,"high":null,"kind":"point","display":"0.06","units":"NTU","statisticType":"reported_level","samplingContext":"plant:Metropolitan Water District Diemer Filtration Plant","rawVerbatim":"0.06"},{"value":0.81,"low":0,"high":0.81,"kind":"range","display":"0–0.81","units":"NTU","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 0.81"}]},{"analyteId":"combined_radium","name":"Combined Radium","family":"radionuclide","familyLabel":"Radionuclides","casrn":null,"whatItIs":"Combined radium-226 and radium-228 — naturally occurring radioactive elements.","whyItMatters":"Long-term exposure above the federal limit increases the risk of bone cancer.","measured":{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":{"type":"MCL","value":5,"units":"pCi/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1,"low":0,"high":1,"kind":"range","display":"0–1","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 1"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"ND"}]},{"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":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":{"type":"MCL","value":15,"units":"pCi/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":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"ND"},{"value":5,"low":0,"high":5,"kind":"range","display":"0–5","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 5"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"ND"},{"value":3.8,"low":0,"high":3.8,"kind":"range","display":"0–3.8","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 3.8"}]},{"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":4,"low":null,"high":null,"kind":"point","display":"4","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"4"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":5,"low":0,"high":5,"kind":"range","display":"0–5","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 5"},{"value":4,"low":null,"high":null,"kind":"point","display":"4","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"4"}]},{"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":2.6,"low":null,"high":null,"kind":"point","display":"2.6","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","censored":false,"detectionLimit":null,"rawVerbatim":"2.6"},"federalStandard":{"type":"MCL","value":20,"units":"pCi/L","enforceable":true},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":2.6,"low":null,"high":null,"kind":"point","display":"2.6","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"2.6"},{"value":3,"low":0,"high":3,"kind":"range","display":"0–3","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 3"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"pCi/L","statisticType":"average","samplingContext":"plant:Average Amount","rawVerbatim":"1"},{"value":3,"low":2.2,"high":3,"kind":"range","display":"2.2–3","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2.2 - 3"}]}]}}