{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-06-04T01:45:32.603Z"},"system":{"slug":"ca__suburban-water-systems-glendora__CA1910046__2022","name":"Suburban Water Systems-glendora — Covina, Ca","state":"CA","year":2022,"url":"https://www.thewatermap.com/water/ca/suburban-water-systems-glendora-covina-ca/2022","apiUrl":"https://www.thewatermap.com/api/water/ca/suburban-water-systems-glendora-covina-ca/2022","markdownUrl":"https://www.thewatermap.com/water/ca/suburban-water-systems-glendora-covina-ca/2022/llms.txt","coordinates":{"latitude":34.1361187,"longitude":-117.865339},"contaminantsMeasured":24,"contaminantsWithFederalLimit":7,"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":"disinfection_byproduct","familyLabel":"Disinfection byproducts","contaminants":[{"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":23,"low":null,"high":null,"kind":"point","display":"23","units":"ug/L","statisticType":"average","samplingContext":"plant:Annual Average","censored":false,"detectionLimit":null,"rawVerbatim":"23"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":23,"low":null,"high":null,"kind":"point","display":"23","units":"ug/L","statisticType":"average","samplingContext":"plant:Annual Average","rawVerbatim":"23"},{"value":22,"low":4.4,"high":22,"kind":"range","display":"4.4–22","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"4.4 - 22"}]},{"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":45,"low":null,"high":null,"kind":"point","display":"45","units":"ug/L","statisticType":"average","samplingContext":"plant:Annual Average","censored":false,"detectionLimit":null,"rawVerbatim":"45"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":47,"low":18,"high":47,"kind":"range","display":"18–47","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"18 - 47"},{"value":45,"low":null,"high":null,"kind":"point","display":"45","units":"ug/L","statisticType":"average","samplingContext":"plant:Annual Average","rawVerbatim":"45"}]}]},{"family":"inorganic","familyLabel":"Inorganic chemicals","contaminants":[{"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":0.1,"low":null,"high":null,"kind":"point","display":"0.1","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.1"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.1,"low":0,"high":0.1,"kind":"range","display":"0–0.1","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 0.1"},{"value":0.1,"low":null,"high":null,"kind":"point","display":"0.1","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.1"}]},{"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":0.6,"low":null,"high":null,"kind":"point","display":"0.6","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.6"},"federalStandard":{"type":"MCL","value":10,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.9,"low":0.4,"high":0.9,"kind":"range","display":"0.4–0.9","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.4 - 0.9"},{"value":0.6,"low":null,"high":null,"kind":"point","display":"0.6","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.6"}]},{"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":34,"low":null,"high":null,"kind":"point","display":"34","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"34"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":43,"low":24,"high":43,"kind":"range","display":"24–43","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"24 - 43"},{"value":34,"low":null,"high":null,"kind":"point","display":"34","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"34"}]}]},{"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":39,"low":null,"high":null,"kind":"point","display":"39","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"39"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.039,"low":null,"high":null,"kind":"point","display":"0.039","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.039"},{"value":0.051,"low":0,"high":0.051,"kind":"range","display":"0–0.051","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 0.051"},{"value":39,"low":null,"high":null,"kind":"point","display":"39","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"39"},{"value":51,"low":0,"high":51,"kind":"range","display":"0–51","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 51"}]},{"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":1.9,"low":null,"high":null,"kind":"point","display":"1.9","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1.9"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1.9,"low":null,"high":null,"kind":"point","display":"1.9","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"1.9"},{"value":3.1,"low":1.3,"high":3.1,"kind":"range","display":"1.3–3.1","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"1.3 - 3.1"}]},{"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":24,"low":null,"high":null,"kind":"point","display":"24","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"24"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":24,"low":null,"high":null,"kind":"point","display":"24","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"24"},{"value":30,"low":17,"high":30,"kind":"range","display":"17–30","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"17 - 30"}]},{"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":0.56,"low":null,"high":null,"kind":"point","display":"0.56","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0.56"},"federalStandard":{"type":"AL","value":1.3,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.56,"low":null,"high":null,"kind":"point","display":"0.56","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.56"}]},{"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":"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":9,"low":null,"high":null,"kind":"point","display":"9","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"9"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":9,"low":null,"high":null,"kind":"point","display":"9","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"9"},{"value":8.9,"low":8.1,"high":8.9,"kind":"range","display":"8.1–8.9","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"8.1 - 8.9"}]},{"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":3.4,"low":null,"high":null,"kind":"point","display":"3.4","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"3.4"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":4.1,"low":2.6,"high":4.1,"kind":"range","display":"2.6–4.1","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2.6 - 4.1"},{"value":3.4,"low":null,"high":null,"kind":"point","display":"3.4","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"3.4"}]},{"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":35,"low":null,"high":null,"kind":"point","display":"35","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"35"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":36,"low":34,"high":36,"kind":"range","display":"34–36","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"34 - 36"},{"value":35,"low":null,"high":null,"kind":"point","display":"35","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"35"}]}]},{"family":"microbial","familyLabel":"Microbial","contaminants":[{"analyteId":"total_coliform","name":"Total Coliform","family":"microbial","familyLabel":"Microbial","casrn":null,"whatItIs":"A group of bacteria used as an indicator of overall water-system sanitation.","whyItMatters":"Coliforms themselves are usually harmless, but their presence signals that disease-causing organisms could enter the system.","measured":{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"max_single","samplingContext":"plant:Highest / Monthly","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":{"type":"MCLG","value":0,"units":null,"enforceable":false},"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"max_single","samplingContext":"plant:Highest / Monthly","rawVerbatim":"0"}]}]},{"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":90,"low":null,"high":null,"kind":"point","display":"90","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"90"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":90,"low":null,"high":null,"kind":"point","display":"90","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"90"},{"value":100,"low":80,"high":100,"kind":"range","display":"80–100","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"80 - 100"}]},{"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":4.5,"low":null,"high":null,"kind":"point","display":"4.5","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"4.5"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":4.5,"low":null,"high":null,"kind":"point","display":"4.5","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"4.5"},{"value":5,"low":4,"high":5,"kind":"range","display":"4–5","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"4 - 5"}]},{"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":94,"low":null,"high":null,"kind":"point","display":"94","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"94"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":110,"low":77,"high":110,"kind":"range","display":"77–110","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"77 - 110"},{"value":94,"low":null,"high":null,"kind":"point","display":"94","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"94"},{"value":6.4,"low":4.5,"high":6.4,"kind":"range","display":"4.5–6.4","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"4.5 - 6.4"},{"value":5.5,"low":null,"high":null,"kind":"point","display":"5.5","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"5.5"}]},{"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":"system","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":"range","samplingContext":"system","rawVerbatim":"8.2"},{"value":8.2,"low":null,"high":null,"kind":"point","display":"8.2","units":null,"statisticType":"average","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":365,"low":null,"high":null,"kind":"point","display":"365","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"365"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":365,"low":null,"high":null,"kind":"point","display":"365","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"365"},{"value":420,"low":310,"high":420,"kind":"range","display":"310–420","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"310 - 420"}]},{"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":2.7,"low":null,"high":null,"kind":"point","display":"2.7","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"2.7"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":4.9,"low":1.8,"high":4.9,"kind":"range","display":"1.8–4.9","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"1.8 - 4.9"},{"value":2.7,"low":null,"high":null,"kind":"point","display":"2.7","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"2.7"}]},{"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":195,"low":null,"high":null,"kind":"point","display":"195","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"195"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":220,"low":170,"high":220,"kind":"range","display":"170–220","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"170 - 220"},{"value":195,"low":null,"high":null,"kind":"point","display":"195","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"195"}]},{"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":0.28,"low":null,"high":null,"kind":"point","display":"0.28","units":null,"statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.28"},"federalStandard":{"type":"TT","value":0.3,"units":null,"enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.28,"low":null,"high":null,"kind":"point","display":"0.28","units":null,"statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0.28"}]}]},{"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":3.3,"low":null,"high":null,"kind":"point","display":"3.3","units":"pCi/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"3.3"},"federalStandard":{"type":"MCL","value":15,"units":"pCi/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":3.3,"low":null,"high":null,"kind":"point","display":"3.3","units":"pCi/L","statisticType":"average","samplingContext":"system","rawVerbatim":"3.3"},{"value":3.3,"low":null,"high":null,"kind":"point","display":"3.3","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"3.3"}]},{"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":2.5,"low":null,"high":null,"kind":"point","display":"2.5","units":"pCi/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"2.5"},"federalStandard":{"type":"MCL","value":20,"units":"pCi/L","enforceable":true},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":2.5,"low":null,"high":null,"kind":"point","display":"2.5","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2.5"},{"value":2.5,"low":null,"high":null,"kind":"point","display":"2.5","units":"pCi/L","statisticType":"average","samplingContext":"system","rawVerbatim":"2.5"}]}]}],"contaminants":[{"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":23,"low":null,"high":null,"kind":"point","display":"23","units":"ug/L","statisticType":"average","samplingContext":"plant:Annual Average","censored":false,"detectionLimit":null,"rawVerbatim":"23"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":23,"low":null,"high":null,"kind":"point","display":"23","units":"ug/L","statisticType":"average","samplingContext":"plant:Annual Average","rawVerbatim":"23"},{"value":22,"low":4.4,"high":22,"kind":"range","display":"4.4–22","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"4.4 - 22"}]},{"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":45,"low":null,"high":null,"kind":"point","display":"45","units":"ug/L","statisticType":"average","samplingContext":"plant:Annual Average","censored":false,"detectionLimit":null,"rawVerbatim":"45"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":47,"low":18,"high":47,"kind":"range","display":"18–47","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"18 - 47"},{"value":45,"low":null,"high":null,"kind":"point","display":"45","units":"ug/L","statisticType":"average","samplingContext":"plant:Annual Average","rawVerbatim":"45"}]},{"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":0.1,"low":null,"high":null,"kind":"point","display":"0.1","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.1"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.1,"low":0,"high":0.1,"kind":"range","display":"0–0.1","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 0.1"},{"value":0.1,"low":null,"high":null,"kind":"point","display":"0.1","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.1"}]},{"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":0.6,"low":null,"high":null,"kind":"point","display":"0.6","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.6"},"federalStandard":{"type":"MCL","value":10,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.9,"low":0.4,"high":0.9,"kind":"range","display":"0.4–0.9","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.4 - 0.9"},{"value":0.6,"low":null,"high":null,"kind":"point","display":"0.6","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.6"}]},{"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":34,"low":null,"high":null,"kind":"point","display":"34","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"34"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":43,"low":24,"high":43,"kind":"range","display":"24–43","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"24 - 43"},{"value":34,"low":null,"high":null,"kind":"point","display":"34","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"34"}]},{"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":39,"low":null,"high":null,"kind":"point","display":"39","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"39"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.039,"low":null,"high":null,"kind":"point","display":"0.039","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.039"},{"value":0.051,"low":0,"high":0.051,"kind":"range","display":"0–0.051","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 0.051"},{"value":39,"low":null,"high":null,"kind":"point","display":"39","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"39"},{"value":51,"low":0,"high":51,"kind":"range","display":"0–51","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 51"}]},{"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":1.9,"low":null,"high":null,"kind":"point","display":"1.9","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1.9"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1.9,"low":null,"high":null,"kind":"point","display":"1.9","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"1.9"},{"value":3.1,"low":1.3,"high":3.1,"kind":"range","display":"1.3–3.1","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"1.3 - 3.1"}]},{"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":24,"low":null,"high":null,"kind":"point","display":"24","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"24"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":24,"low":null,"high":null,"kind":"point","display":"24","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"24"},{"value":30,"low":17,"high":30,"kind":"range","display":"17–30","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"17 - 30"}]},{"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":0.56,"low":null,"high":null,"kind":"point","display":"0.56","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0.56"},"federalStandard":{"type":"AL","value":1.3,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.56,"low":null,"high":null,"kind":"point","display":"0.56","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.56"}]},{"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":"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":9,"low":null,"high":null,"kind":"point","display":"9","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"9"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":9,"low":null,"high":null,"kind":"point","display":"9","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"9"},{"value":8.9,"low":8.1,"high":8.9,"kind":"range","display":"8.1–8.9","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"8.1 - 8.9"}]},{"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":3.4,"low":null,"high":null,"kind":"point","display":"3.4","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"3.4"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":4.1,"low":2.6,"high":4.1,"kind":"range","display":"2.6–4.1","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2.6 - 4.1"},{"value":3.4,"low":null,"high":null,"kind":"point","display":"3.4","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"3.4"}]},{"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":35,"low":null,"high":null,"kind":"point","display":"35","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"35"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":36,"low":34,"high":36,"kind":"range","display":"34–36","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"34 - 36"},{"value":35,"low":null,"high":null,"kind":"point","display":"35","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"35"}]},{"analyteId":"total_coliform","name":"Total Coliform","family":"microbial","familyLabel":"Microbial","casrn":null,"whatItIs":"A group of bacteria used as an indicator of overall water-system sanitation.","whyItMatters":"Coliforms themselves are usually harmless, but their presence signals that disease-causing organisms could enter the system.","measured":{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"max_single","samplingContext":"plant:Highest / Monthly","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":{"type":"MCLG","value":0,"units":null,"enforceable":false},"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"max_single","samplingContext":"plant:Highest / Monthly","rawVerbatim":"0"}]},{"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":90,"low":null,"high":null,"kind":"point","display":"90","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"90"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":90,"low":null,"high":null,"kind":"point","display":"90","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"90"},{"value":100,"low":80,"high":100,"kind":"range","display":"80–100","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"80 - 100"}]},{"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":4.5,"low":null,"high":null,"kind":"point","display":"4.5","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"4.5"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":4.5,"low":null,"high":null,"kind":"point","display":"4.5","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"4.5"},{"value":5,"low":4,"high":5,"kind":"range","display":"4–5","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"4 - 5"}]},{"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":94,"low":null,"high":null,"kind":"point","display":"94","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"94"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":110,"low":77,"high":110,"kind":"range","display":"77–110","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"77 - 110"},{"value":94,"low":null,"high":null,"kind":"point","display":"94","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"94"},{"value":6.4,"low":4.5,"high":6.4,"kind":"range","display":"4.5–6.4","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"4.5 - 6.4"},{"value":5.5,"low":null,"high":null,"kind":"point","display":"5.5","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"5.5"}]},{"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":"system","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":"range","samplingContext":"system","rawVerbatim":"8.2"},{"value":8.2,"low":null,"high":null,"kind":"point","display":"8.2","units":null,"statisticType":"average","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":365,"low":null,"high":null,"kind":"point","display":"365","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"365"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":365,"low":null,"high":null,"kind":"point","display":"365","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"365"},{"value":420,"low":310,"high":420,"kind":"range","display":"310–420","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"310 - 420"}]},{"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":2.7,"low":null,"high":null,"kind":"point","display":"2.7","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"2.7"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":4.9,"low":1.8,"high":4.9,"kind":"range","display":"1.8–4.9","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"1.8 - 4.9"},{"value":2.7,"low":null,"high":null,"kind":"point","display":"2.7","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"2.7"}]},{"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":195,"low":null,"high":null,"kind":"point","display":"195","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"195"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":220,"low":170,"high":220,"kind":"range","display":"170–220","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"170 - 220"},{"value":195,"low":null,"high":null,"kind":"point","display":"195","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"195"}]},{"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":0.28,"low":null,"high":null,"kind":"point","display":"0.28","units":null,"statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.28"},"federalStandard":{"type":"TT","value":0.3,"units":null,"enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.28,"low":null,"high":null,"kind":"point","display":"0.28","units":null,"statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0.28"}]},{"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":3.3,"low":null,"high":null,"kind":"point","display":"3.3","units":"pCi/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"3.3"},"federalStandard":{"type":"MCL","value":15,"units":"pCi/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":3.3,"low":null,"high":null,"kind":"point","display":"3.3","units":"pCi/L","statisticType":"average","samplingContext":"system","rawVerbatim":"3.3"},{"value":3.3,"low":null,"high":null,"kind":"point","display":"3.3","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"3.3"}]},{"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":2.5,"low":null,"high":null,"kind":"point","display":"2.5","units":"pCi/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"2.5"},"federalStandard":{"type":"MCL","value":20,"units":"pCi/L","enforceable":true},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":2.5,"low":null,"high":null,"kind":"point","display":"2.5","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2.5"},{"value":2.5,"low":null,"high":null,"kind":"point","display":"2.5","units":"pCi/L","statisticType":"average","samplingContext":"system","rawVerbatim":"2.5"}]}]}}