{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-06-04T02:20:10.064Z"},"system":{"slug":"ca__golden-state-wc-cowan-heights__CA3010047","name":"Golden State Wc - Cowan Heights — Anaheim, Ca","state":"CA","year":2023,"url":"https://www.thewatermap.com/water/ca/golden-state-wc-cowan-heights-anaheim-ca/2023","apiUrl":"https://www.thewatermap.com/api/water/ca/golden-state-wc-cowan-heights-anaheim-ca/2023","markdownUrl":"https://www.thewatermap.com/water/ca/golden-state-wc-cowan-heights-anaheim-ca/2023/llms.txt","coordinates":{"latitude":33.8347516,"longitude":-117.911732},"contaminantsMeasured":14,"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":"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":1.5,"low":null,"high":null,"kind":"point","display":"1.5","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1.5"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":2.6,"low":0.1,"high":2.6,"kind":"range","display":"0.1–2.6","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.1 - 2.6"},{"value":1.5,"low":null,"high":null,"kind":"point","display":"1.5","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"1.5"}]}]},{"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":"system","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"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"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"ND"}]},{"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":19,"low":null,"high":null,"kind":"point","display":"19","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"19"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":12,"low":2.9,"high":12,"kind":"range","display":"2.9–12","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2.9 - 12"},{"value":19,"low":null,"high":null,"kind":"point","display":"19","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"19"}]},{"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":43,"low":null,"high":null,"kind":"point","display":"43","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"43"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":43,"low":4.4,"high":43,"kind":"range","display":"4.4–43","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"4.4 - 43"},{"value":43,"low":null,"high":null,"kind":"point","display":"43","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"43"}]}]},{"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":0.45,"low":null,"high":null,"kind":"point","display":"0.45","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.45"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.8,"low":0.2,"high":0.8,"kind":"range","display":"0.2–0.8","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.20 - 0.80"},{"value":0.45,"low":null,"high":null,"kind":"point","display":"0.45","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.45"}]},{"analyteId":"nitrate","name":"Nitrate","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"14797-55-8","whatItIs":"A compound from fertilizer runoff, septic systems, and erosion of natural deposits.","whyItMatters":"Levels above the federal limit can cause 'blue baby syndrome,' a serious oxygen-transport condition in infants.","measured":{"value":1.1,"low":null,"high":null,"kind":"point","display":"1.1","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1.1"},"federalStandard":{"type":"MCL","value":10,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1.1,"low":null,"high":null,"kind":"point","display":"1.1","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"1.1"},{"value":2.3,"low":0,"high":2.3,"kind":"range","display":"0–2.3","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 2.3"}]}]},{"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":"mg/L","statisticType":"average","samplingContext":"system","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"average","samplingContext":"system","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,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"average","samplingContext":"system","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":{"type":"MCL","value":2,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"ND"},{"value":0.12,"low":0,"high":0.12,"kind":"range","display":"0–0.12","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 0.12"}]},{"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":0.12,"low":null,"high":null,"kind":"point","display":"0.12","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.12"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.25,"low":0,"high":0.25,"kind":"range","display":"0–0.25","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 0.25"},{"value":0.12,"low":null,"high":null,"kind":"point","display":"0.12","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.12"}]},{"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":0.13,"low":null,"high":null,"kind":"point","display":"0.13","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0.13"},"federalStandard":{"type":"AL","value":1.3,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.13,"low":null,"high":null,"kind":"point","display":"0.13","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.13"}]},{"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":"under","label":"Within the limit"},"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"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:Number of Schools Tested","rawVerbatim":"1"}]}]},{"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":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"average","samplingContext":"system","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":"system","rawVerbatim":"ND"},{"value":5,"low":0,"high":5,"kind":"range","display":"0–5","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 5"}]},{"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":"system","censored":false,"detectionLimit":null,"rawVerbatim":"4"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":4,"low":null,"high":null,"kind":"point","display":"4","units":"pCi/L","statisticType":"average","samplingContext":"system","rawVerbatim":"4"},{"value":5,"low":0,"high":5,"kind":"range","display":"0–5","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 5"}]},{"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":1,"low":null,"high":null,"kind":"point","display":"1","units":"pCi/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1"},"federalStandard":{"type":"MCL","value":20,"units":"pCi/L","enforceable":true},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"pCi/L","statisticType":"average","samplingContext":"system","rawVerbatim":"1"},{"value":3,"low":0,"high":3,"kind":"range","display":"0–3","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 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":1.5,"low":null,"high":null,"kind":"point","display":"1.5","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1.5"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":2.6,"low":0.1,"high":2.6,"kind":"range","display":"0.1–2.6","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.1 - 2.6"},{"value":1.5,"low":null,"high":null,"kind":"point","display":"1.5","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"1.5"}]},{"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":"system","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"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"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"ND"}]},{"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":19,"low":null,"high":null,"kind":"point","display":"19","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"19"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":12,"low":2.9,"high":12,"kind":"range","display":"2.9–12","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2.9 - 12"},{"value":19,"low":null,"high":null,"kind":"point","display":"19","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"19"}]},{"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":43,"low":null,"high":null,"kind":"point","display":"43","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"43"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":43,"low":4.4,"high":43,"kind":"range","display":"4.4–43","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"4.4 - 43"},{"value":43,"low":null,"high":null,"kind":"point","display":"43","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"43"}]},{"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":0.45,"low":null,"high":null,"kind":"point","display":"0.45","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.45"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.8,"low":0.2,"high":0.8,"kind":"range","display":"0.2–0.8","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.20 - 0.80"},{"value":0.45,"low":null,"high":null,"kind":"point","display":"0.45","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.45"}]},{"analyteId":"nitrate","name":"Nitrate","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"14797-55-8","whatItIs":"A compound from fertilizer runoff, septic systems, and erosion of natural deposits.","whyItMatters":"Levels above the federal limit can cause 'blue baby syndrome,' a serious oxygen-transport condition in infants.","measured":{"value":1.1,"low":null,"high":null,"kind":"point","display":"1.1","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1.1"},"federalStandard":{"type":"MCL","value":10,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1.1,"low":null,"high":null,"kind":"point","display":"1.1","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"1.1"},{"value":2.3,"low":0,"high":2.3,"kind":"range","display":"0–2.3","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 2.3"}]},{"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":"mg/L","statisticType":"average","samplingContext":"system","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"average","samplingContext":"system","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,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"average","samplingContext":"system","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":{"type":"MCL","value":2,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"ND"},{"value":0.12,"low":0,"high":0.12,"kind":"range","display":"0–0.12","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 0.12"}]},{"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":0.12,"low":null,"high":null,"kind":"point","display":"0.12","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.12"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.25,"low":0,"high":0.25,"kind":"range","display":"0–0.25","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 0.25"},{"value":0.12,"low":null,"high":null,"kind":"point","display":"0.12","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.12"}]},{"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":0.13,"low":null,"high":null,"kind":"point","display":"0.13","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0.13"},"federalStandard":{"type":"AL","value":1.3,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.13,"low":null,"high":null,"kind":"point","display":"0.13","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.13"}]},{"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":"under","label":"Within the limit"},"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"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:Number of Schools Tested","rawVerbatim":"1"}]},{"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":"system","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":"system","rawVerbatim":"ND"},{"value":5,"low":0,"high":5,"kind":"range","display":"0–5","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 5"}]},{"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":"system","censored":false,"detectionLimit":null,"rawVerbatim":"4"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":4,"low":null,"high":null,"kind":"point","display":"4","units":"pCi/L","statisticType":"average","samplingContext":"system","rawVerbatim":"4"},{"value":5,"low":0,"high":5,"kind":"range","display":"0–5","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 5"}]},{"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":1,"low":null,"high":null,"kind":"point","display":"1","units":"pCi/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1"},"federalStandard":{"type":"MCL","value":20,"units":"pCi/L","enforceable":true},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"pCi/L","statisticType":"average","samplingContext":"system","rawVerbatim":"1"},{"value":3,"low":0,"high":3,"kind":"range","display":"0–3","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 3"}]}]}}