{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-06-04T01:23:21.854Z"},"system":{"slug":"ca__compton-city-water-dept__CA1910026","name":"Compton-city, Water Dept. — Compton, Ca","state":"CA","year":2023,"url":"https://www.thewatermap.com/water/ca/compton-city-water-dept-compton-ca/2023","apiUrl":"https://www.thewatermap.com/api/water/ca/compton-city-water-dept-compton-ca/2023","markdownUrl":"https://www.thewatermap.com/water/ca/compton-city-water-dept-compton-ca/2023/llms.txt","coordinates":{"latitude":33.894927,"longitude":-118.226624},"contaminantsMeasured":23,"contaminantsWithFederalLimit":10,"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":6.6,"low":null,"high":null,"kind":"point","display":"6.6","units":"ug/L","statisticType":"running_annual_avg","samplingContext":"zone:Distribution System Highest","censored":false,"detectionLimit":null,"rawVerbatim":"6.6"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"zone:Distribution System","label":"Distribution System","kind":"zone","units":"ug/L","average":null,"range":{"low":0,"high":7.6,"display":"0–7.6"},"ratio":0.12666666666666668},{"context":"zone:Distribution System Highest","label":"Distribution System Highest","kind":"zone","units":"ug/L","average":{"value":6.6,"display":"6.6"},"range":null,"ratio":0.11}],"measurements":[{"value":7.6,"low":0,"high":7.6,"kind":"range","display":"0–7.6","units":"ug/L","statisticType":"range","samplingContext":"zone:Distribution System","rawVerbatim":"0.0 - 7.6"},{"value":6.6,"low":null,"high":null,"kind":"point","display":"6.6","units":"ug/L","statisticType":"running_annual_avg","samplingContext":"zone:Distribution System Highest","rawVerbatim":"6.6"}]},{"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":31.3,"low":null,"high":null,"kind":"point","display":"31.3","units":"ug/L","statisticType":"running_annual_avg","samplingContext":"zone:Distribution System Highest","censored":false,"detectionLimit":null,"rawVerbatim":"31.3"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"zone:Distribution System","label":"Distribution System","kind":"zone","units":"ug/L","average":null,"range":{"low":2.5,"high":47.1,"display":"2.5–47.1"},"ratio":0.58875},{"context":"zone:Distribution System Highest","label":"Distribution System Highest","kind":"zone","units":"ug/L","average":{"value":31.3,"display":"31.3"},"range":null,"ratio":0.39125}],"measurements":[{"value":47.1,"low":2.5,"high":47.1,"kind":"range","display":"2.5–47.1","units":"ug/L","statisticType":"range","samplingContext":"zone:Distribution System","rawVerbatim":"2.5 - 47.1"},{"value":31.3,"low":null,"high":null,"kind":"point","display":"31.3","units":"ug/L","statisticType":"running_annual_avg","samplingContext":"zone:Distribution System Highest","rawVerbatim":"31.3"}]}]},{"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":0.3,"low":null,"high":null,"kind":"point","display":"0.3","units":"mg/L","statisticType":"average","samplingContext":"plant:Groundwater","censored":false,"detectionLimit":null,"rawVerbatim":"0.3"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.3,"low":null,"high":null,"kind":"point","display":"0.3","units":"mg/L","statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"0.3"},{"value":0.3,"low":0.2,"high":0.3,"kind":"range","display":"0.2–0.3","units":"mg/L","statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"0.2 - 0.3"}]},{"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":0.3,"low":null,"high":null,"kind":"point","display":"0.3","units":"mg/L","statisticType":"average","samplingContext":"plant:Groundwater","censored":false,"detectionLimit":null,"rawVerbatim":"0.3"},"federalStandard":{"type":"MCL","value":10,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.3,"low":null,"high":null,"kind":"point","display":"0.3","units":"mg/L","statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"0.3"},{"value":1.1,"low":0,"high":1.1,"kind":"range","display":"0–1.1","units":"mg/L","statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"ND - 1.1"}]}]},{"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":"range","samplingContext":"plant:Groundwater","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":"mg/L","statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"ND"}]},{"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":2.5,"low":null,"high":null,"kind":"point","display":"2.5","units":"ug/L","statisticType":"average","samplingContext":"plant:Groundwater","censored":false,"detectionLimit":null,"rawVerbatim":"2.5"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":4.7,"low":0,"high":4.7,"kind":"range","display":"0–4.7","units":"ug/L","statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"ND - 4.7"},{"value":2.5,"low":null,"high":null,"kind":"point","display":"2.5","units":"ug/L","statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"2.5"}]},{"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":0.09,"low":null,"high":null,"kind":"point","display":"0.09","units":"mg/L","statisticType":"average","samplingContext":"plant:Groundwater","censored":false,"detectionLimit":null,"rawVerbatim":"0.09"},"federalStandard":{"type":"MCL","value":2,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.09,"low":null,"high":null,"kind":"point","display":"0.09","units":"mg/L","statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"0.09"},{"value":0.11,"low":0.05,"high":0.11,"kind":"range","display":"0.05–0.11","units":"mg/L","statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"0.05 - 0.11"}]},{"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":0.13,"low":null,"high":null,"kind":"point","display":"0.13","units":"ug/L","statisticType":"average","samplingContext":"plant:Groundwater","censored":false,"detectionLimit":null,"rawVerbatim":"0.13"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.4,"low":0,"high":0.4,"kind":"range","display":"0–0.4","units":"ug/L","statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"ND - 0.4"},{"value":0.13,"low":null,"high":null,"kind":"point","display":"0.13","units":"ug/L","statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"0.13"}]},{"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":0.19,"low":null,"high":null,"kind":"point","display":"0.19","units":"mg/L","statisticType":"p90","samplingContext":"zone:DISTRIBUTION SYSTEM 90%ile","censored":false,"detectionLimit":null,"rawVerbatim":"0.19 (j)"},"federalStandard":{"type":"AL","value":1.3,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.19,"low":null,"high":null,"kind":"point","display":"0.19","units":"mg/L","statisticType":"p90","samplingContext":"zone:DISTRIBUTION SYSTEM 90%ile","rawVerbatim":"0.19 (j)"}]},{"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":"point","display":"0","units":"ug/L","statisticType":"p90","samplingContext":"zone:DISTRIBUTION SYSTEM 90%ile","censored":false,"detectionLimit":null,"rawVerbatim":"0 (j)"},"federalStandard":null,"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"p90","samplingContext":"zone:DISTRIBUTION SYSTEM 90%ile","rawVerbatim":"0 (j)"}]},{"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":8.75,"low":null,"high":null,"kind":"point","display":"8.75","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"8.75"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":58,"low":0,"high":58,"kind":"range","display":"0–58","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 58.0"},{"value":8.75,"low":null,"high":null,"kind":"point","display":"8.75","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"8.75"}]}]},{"family":"microbial","familyLabel":"Microbial","contaminants":[{"analyteId":"ecoli","name":"Escherichia coli (E. coli)","family":"microbial","familyLabel":"Microbial","casrn":null,"whatItIs":"Escherichia coli — bacteria found in the gut of humans and animals.","whyItMatters":"Its presence in drinking water indicates fecal contamination and a real risk of waterborne illness.","measured":{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"%","statisticType":"average","samplingContext":"zone:Distribution System Average % Positive","censored":false,"detectionLimit":null,"rawVerbatim":"0%"},"federalStandard":null,"status":{"key":"none","label":"None detected"},"breakdowns":[{"context":"zone:Distribution System Average % Positive","label":"Distribution System Average % Positive","kind":"zone","units":"%","average":{"value":0,"display":"0"},"range":null,"ratio":null},{"context":"zone:Distribution System Range %","label":"Distribution System Range %","kind":"zone","units":"%","average":null,"range":{"low":null,"high":null,"display":"0"},"ratio":null}],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"%","statisticType":"average","samplingContext":"zone:Distribution System Average % Positive","rawVerbatim":"0%"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"%","statisticType":"range","samplingContext":"zone:Distribution System Range %","rawVerbatim":"0%"}]},{"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":0.3,"low":null,"high":null,"kind":"point","display":"0.3","units":"%","statisticType":"average","samplingContext":"zone:Distribution System Average % Positive","censored":false,"detectionLimit":null,"rawVerbatim":"0.3%"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[{"context":"zone:Distribution System Range %","label":"Distribution System Range %","kind":"zone","units":"%","average":null,"range":{"low":1.2,"high":2.3,"display":"1.2–2.3"},"ratio":null},{"context":"zone:Distribution System Average % Positive","label":"Distribution System Average % Positive","kind":"zone","units":"%","average":{"value":0.3,"display":"0.3"},"range":null,"ratio":null}],"measurements":[{"value":2.3,"low":1.2,"high":2.3,"kind":"range","display":"1.2–2.3","units":"%","statisticType":"range","samplingContext":"zone:Distribution System Range %","rawVerbatim":"1.2% - 2.3%"},{"value":0.3,"low":null,"high":null,"kind":"point","display":"0.3","units":"%","statisticType":"average","samplingContext":"zone:Distribution System Average % Positive","rawVerbatim":"0.3%"}]}]},{"family":"other","familyLabel":"Other","contaminants":[{"analyteId":"chlorine_total","name":"Chlorine Total","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":1.12,"low":null,"high":null,"kind":"point","display":"1.12","units":"mg/L","statisticType":"running_annual_avg","samplingContext":"zone:Distribution System Highest","censored":false,"detectionLimit":null,"rawVerbatim":"1.12"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"zone:Distribution System","label":"Distribution System","kind":"zone","units":"mg/L","average":null,"range":{"low":0.13,"high":2,"display":"0.13–2"},"ratio":0.5},{"context":"zone:Distribution System Highest","label":"Distribution System Highest","kind":"zone","units":"mg/L","average":{"value":1.12,"display":"1.12"},"range":null,"ratio":0.28}],"measurements":[{"value":1.12,"low":null,"high":null,"kind":"point","display":"1.12","units":"mg/L","statisticType":"running_annual_avg","samplingContext":"zone:Distribution System Highest","rawVerbatim":"1.12"},{"value":2,"low":0.13,"high":2,"kind":"range","display":"0.13–2","units":"mg/L","statisticType":"range","samplingContext":"zone:Distribution System","rawVerbatim":"0.13 - 2.00"}]},{"analyteId":"cis_dichloroethylene_12","name":"Cis Dichloroethylene 12","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":0.3,"low":null,"high":null,"kind":"point","display":"0.3","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","censored":false,"detectionLimit":null,"rawVerbatim":"0.3"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1.2,"low":0,"high":1.2,"kind":"range","display":"0–1.2","units":null,"statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"ND - 1.2"},{"value":0.3,"low":null,"high":null,"kind":"point","display":"0.3","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"0.3"}]}]},{"family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","contaminants":[{"analyteId":"pfhxs","name":"Perfluorohexanesulfonic acid","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"355-46-4","whatItIs":"Perfluorohexanesulfonic acid, a PFAS 'forever chemical.'","whyItMatters":"Regulated by the EPA at 10 parts per trillion and included in the PFAS Hazard Index.","measured":{"value":0.0004,"low":null,"high":null,"kind":"point","display":"0.0004","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.0004"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.004,"low":0,"high":0.004,"kind":"range","display":"0–0.004","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 0.004"},{"value":0.0004,"low":null,"high":null,"kind":"point","display":"0.0004","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"0.0004"},{"value":4.3,"low":null,"high":null,"kind":"point","display":"4.3","units":"ng/L","statisticType":"reported_level","samplingContext":"plant:Well 18","rawVerbatim":"4.3 ng/L"}]},{"analyteId":"pfoa","name":"PFOA","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"335-67-1","whatItIs":"Perfluorooctanoic acid, a PFAS 'forever chemical' once used in nonstick and stain-resistant products.","whyItMatters":"Linked to cancer, liver damage, and immune effects; the EPA set an enforceable limit of 4 parts per trillion.","measured":{"value":0.00062,"low":null,"high":null,"kind":"point","display":"0.00062","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.00062"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.0062,"low":0,"high":0.0062,"kind":"range","display":"0–0.0062","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 0.0062"},{"value":8.2,"low":null,"high":null,"kind":"point","display":"8.2","units":"ng/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"8.2 ng/L"},{"value":0.00062,"low":null,"high":null,"kind":"point","display":"0.00062","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"0.00062"}]},{"analyteId":"pfos","name":"PFOS","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"1763-23-1","whatItIs":"Perfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings.","whyItMatters":"Linked to cancer, thyroid disease, and immune effects; the EPA set an enforceable limit of 4 parts per trillion.","measured":{"value":0.0014,"low":null,"high":null,"kind":"point","display":"0.0014","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.0014"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":18,"low":null,"high":null,"kind":"point","display":"18","units":"ng/L","statisticType":"reported_level","samplingContext":"plant:Well 18","rawVerbatim":"18.0 ng/L"},{"value":0.0014,"low":null,"high":null,"kind":"point","display":"0.0014","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"0.0014"},{"value":0.0014,"low":0,"high":0.0014,"kind":"range","display":"0–0.0014","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 0.0014"},{"value":9.3,"low":null,"high":null,"kind":"point","display":"9.3","units":"ng/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"9.3 ng/L"}]}]},{"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":null,"statisticType":"average","samplingContext":"plant:Groundwater","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":{"type":"MCL","value":5,"units":null,"enforceable":true},"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":null,"statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":null,"statisticType":"range","samplingContext":"plant:Groundwater","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":3.5,"low":null,"high":null,"kind":"point","display":"3.5","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","censored":false,"detectionLimit":null,"rawVerbatim":"3.5"},"federalStandard":{"type":"MCL","value":15,"units":null,"enforceable":true},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":6.9,"low":0,"high":6.9,"kind":"range","display":"0–6.9","units":null,"statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"ND - 6.9"},{"value":3.5,"low":null,"high":null,"kind":"point","display":"3.5","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"3.5"}]},{"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":3.2,"low":null,"high":null,"kind":"point","display":"3.2","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","censored":false,"detectionLimit":null,"rawVerbatim":"3.2"},"federalStandard":{"type":"MCL","value":20,"units":null,"enforceable":true},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":5.8,"low":0,"high":5.8,"kind":"range","display":"0–5.8","units":null,"statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"ND - 5.8"},{"value":3.2,"low":null,"high":null,"kind":"point","display":"3.2","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"3.2"}]}]},{"family":"voc_pesticide","familyLabel":"VOCs & pesticides","contaminants":[{"analyteId":"tetrachloroethylene","name":"Tetrachloroethylene","family":"voc_pesticide","familyLabel":"VOCs & pesticides","casrn":"127-18-4","whatItIs":"An industrial solvent (PCE) used in dry cleaning and degreasing.","whyItMatters":"A likely human carcinogen; long-term exposure above the federal limit can damage the liver and kidneys.","measured":{"value":0.2,"low":null,"high":null,"kind":"point","display":"0.2","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","censored":false,"detectionLimit":null,"rawVerbatim":"0.2"},"federalStandard":{"type":"MCL","value":5,"units":null,"enforceable":true},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.2,"low":null,"high":null,"kind":"point","display":"0.2","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"0.2"},{"value":0.8,"low":0,"high":0.8,"kind":"range","display":"0–0.8","units":null,"statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"ND - 0.8"}]},{"analyteId":"trichloroethylene","name":"Trichloroethylene","family":"voc_pesticide","familyLabel":"VOCs & pesticides","casrn":"79-01-6","whatItIs":"An industrial solvent (TCE) used in metal degreasing.","whyItMatters":"A known human carcinogen; long-term exposure above the federal limit can damage the liver.","measured":{"value":0.4,"low":null,"high":null,"kind":"point","display":"0.4","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","censored":false,"detectionLimit":null,"rawVerbatim":"0.4"},"federalStandard":{"type":"MCL","value":5,"units":null,"enforceable":true},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.4,"low":null,"high":null,"kind":"point","display":"0.4","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"0.4"},{"value":1.4,"low":0,"high":1.4,"kind":"range","display":"0–1.4","units":null,"statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"ND - 1.4"}]}]}],"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":6.6,"low":null,"high":null,"kind":"point","display":"6.6","units":"ug/L","statisticType":"running_annual_avg","samplingContext":"zone:Distribution System Highest","censored":false,"detectionLimit":null,"rawVerbatim":"6.6"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"zone:Distribution System","label":"Distribution System","kind":"zone","units":"ug/L","average":null,"range":{"low":0,"high":7.6,"display":"0–7.6"},"ratio":0.12666666666666668},{"context":"zone:Distribution System Highest","label":"Distribution System Highest","kind":"zone","units":"ug/L","average":{"value":6.6,"display":"6.6"},"range":null,"ratio":0.11}],"measurements":[{"value":7.6,"low":0,"high":7.6,"kind":"range","display":"0–7.6","units":"ug/L","statisticType":"range","samplingContext":"zone:Distribution System","rawVerbatim":"0.0 - 7.6"},{"value":6.6,"low":null,"high":null,"kind":"point","display":"6.6","units":"ug/L","statisticType":"running_annual_avg","samplingContext":"zone:Distribution System Highest","rawVerbatim":"6.6"}]},{"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":31.3,"low":null,"high":null,"kind":"point","display":"31.3","units":"ug/L","statisticType":"running_annual_avg","samplingContext":"zone:Distribution System Highest","censored":false,"detectionLimit":null,"rawVerbatim":"31.3"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"zone:Distribution System","label":"Distribution System","kind":"zone","units":"ug/L","average":null,"range":{"low":2.5,"high":47.1,"display":"2.5–47.1"},"ratio":0.58875},{"context":"zone:Distribution System Highest","label":"Distribution System Highest","kind":"zone","units":"ug/L","average":{"value":31.3,"display":"31.3"},"range":null,"ratio":0.39125}],"measurements":[{"value":47.1,"low":2.5,"high":47.1,"kind":"range","display":"2.5–47.1","units":"ug/L","statisticType":"range","samplingContext":"zone:Distribution System","rawVerbatim":"2.5 - 47.1"},{"value":31.3,"low":null,"high":null,"kind":"point","display":"31.3","units":"ug/L","statisticType":"running_annual_avg","samplingContext":"zone:Distribution System Highest","rawVerbatim":"31.3"}]},{"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":0.3,"low":null,"high":null,"kind":"point","display":"0.3","units":"mg/L","statisticType":"average","samplingContext":"plant:Groundwater","censored":false,"detectionLimit":null,"rawVerbatim":"0.3"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.3,"low":null,"high":null,"kind":"point","display":"0.3","units":"mg/L","statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"0.3"},{"value":0.3,"low":0.2,"high":0.3,"kind":"range","display":"0.2–0.3","units":"mg/L","statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"0.2 - 0.3"}]},{"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":0.3,"low":null,"high":null,"kind":"point","display":"0.3","units":"mg/L","statisticType":"average","samplingContext":"plant:Groundwater","censored":false,"detectionLimit":null,"rawVerbatim":"0.3"},"federalStandard":{"type":"MCL","value":10,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.3,"low":null,"high":null,"kind":"point","display":"0.3","units":"mg/L","statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"0.3"},{"value":1.1,"low":0,"high":1.1,"kind":"range","display":"0–1.1","units":"mg/L","statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"ND - 1.1"}]},{"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":"range","samplingContext":"plant:Groundwater","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":"mg/L","statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"ND"}]},{"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":2.5,"low":null,"high":null,"kind":"point","display":"2.5","units":"ug/L","statisticType":"average","samplingContext":"plant:Groundwater","censored":false,"detectionLimit":null,"rawVerbatim":"2.5"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":4.7,"low":0,"high":4.7,"kind":"range","display":"0–4.7","units":"ug/L","statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"ND - 4.7"},{"value":2.5,"low":null,"high":null,"kind":"point","display":"2.5","units":"ug/L","statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"2.5"}]},{"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":0.09,"low":null,"high":null,"kind":"point","display":"0.09","units":"mg/L","statisticType":"average","samplingContext":"plant:Groundwater","censored":false,"detectionLimit":null,"rawVerbatim":"0.09"},"federalStandard":{"type":"MCL","value":2,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.09,"low":null,"high":null,"kind":"point","display":"0.09","units":"mg/L","statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"0.09"},{"value":0.11,"low":0.05,"high":0.11,"kind":"range","display":"0.05–0.11","units":"mg/L","statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"0.05 - 0.11"}]},{"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":0.13,"low":null,"high":null,"kind":"point","display":"0.13","units":"ug/L","statisticType":"average","samplingContext":"plant:Groundwater","censored":false,"detectionLimit":null,"rawVerbatim":"0.13"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.4,"low":0,"high":0.4,"kind":"range","display":"0–0.4","units":"ug/L","statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"ND - 0.4"},{"value":0.13,"low":null,"high":null,"kind":"point","display":"0.13","units":"ug/L","statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"0.13"}]},{"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":0.19,"low":null,"high":null,"kind":"point","display":"0.19","units":"mg/L","statisticType":"p90","samplingContext":"zone:DISTRIBUTION SYSTEM 90%ile","censored":false,"detectionLimit":null,"rawVerbatim":"0.19 (j)"},"federalStandard":{"type":"AL","value":1.3,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.19,"low":null,"high":null,"kind":"point","display":"0.19","units":"mg/L","statisticType":"p90","samplingContext":"zone:DISTRIBUTION SYSTEM 90%ile","rawVerbatim":"0.19 (j)"}]},{"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":"point","display":"0","units":"ug/L","statisticType":"p90","samplingContext":"zone:DISTRIBUTION SYSTEM 90%ile","censored":false,"detectionLimit":null,"rawVerbatim":"0 (j)"},"federalStandard":null,"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"p90","samplingContext":"zone:DISTRIBUTION SYSTEM 90%ile","rawVerbatim":"0 (j)"}]},{"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":8.75,"low":null,"high":null,"kind":"point","display":"8.75","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"8.75"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":58,"low":0,"high":58,"kind":"range","display":"0–58","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 58.0"},{"value":8.75,"low":null,"high":null,"kind":"point","display":"8.75","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"8.75"}]},{"analyteId":"ecoli","name":"Escherichia coli (E. coli)","family":"microbial","familyLabel":"Microbial","casrn":null,"whatItIs":"Escherichia coli — bacteria found in the gut of humans and animals.","whyItMatters":"Its presence in drinking water indicates fecal contamination and a real risk of waterborne illness.","measured":{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"%","statisticType":"average","samplingContext":"zone:Distribution System Average % Positive","censored":false,"detectionLimit":null,"rawVerbatim":"0%"},"federalStandard":null,"status":{"key":"none","label":"None detected"},"breakdowns":[{"context":"zone:Distribution System Average % Positive","label":"Distribution System Average % Positive","kind":"zone","units":"%","average":{"value":0,"display":"0"},"range":null,"ratio":null},{"context":"zone:Distribution System Range %","label":"Distribution System Range %","kind":"zone","units":"%","average":null,"range":{"low":null,"high":null,"display":"0"},"ratio":null}],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"%","statisticType":"average","samplingContext":"zone:Distribution System Average % Positive","rawVerbatim":"0%"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"%","statisticType":"range","samplingContext":"zone:Distribution System Range %","rawVerbatim":"0%"}]},{"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":0.3,"low":null,"high":null,"kind":"point","display":"0.3","units":"%","statisticType":"average","samplingContext":"zone:Distribution System Average % Positive","censored":false,"detectionLimit":null,"rawVerbatim":"0.3%"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[{"context":"zone:Distribution System Range %","label":"Distribution System Range %","kind":"zone","units":"%","average":null,"range":{"low":1.2,"high":2.3,"display":"1.2–2.3"},"ratio":null},{"context":"zone:Distribution System Average % Positive","label":"Distribution System Average % Positive","kind":"zone","units":"%","average":{"value":0.3,"display":"0.3"},"range":null,"ratio":null}],"measurements":[{"value":2.3,"low":1.2,"high":2.3,"kind":"range","display":"1.2–2.3","units":"%","statisticType":"range","samplingContext":"zone:Distribution System Range %","rawVerbatim":"1.2% - 2.3%"},{"value":0.3,"low":null,"high":null,"kind":"point","display":"0.3","units":"%","statisticType":"average","samplingContext":"zone:Distribution System Average % Positive","rawVerbatim":"0.3%"}]},{"analyteId":"chlorine_total","name":"Chlorine Total","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":1.12,"low":null,"high":null,"kind":"point","display":"1.12","units":"mg/L","statisticType":"running_annual_avg","samplingContext":"zone:Distribution System Highest","censored":false,"detectionLimit":null,"rawVerbatim":"1.12"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"zone:Distribution System","label":"Distribution System","kind":"zone","units":"mg/L","average":null,"range":{"low":0.13,"high":2,"display":"0.13–2"},"ratio":0.5},{"context":"zone:Distribution System Highest","label":"Distribution System Highest","kind":"zone","units":"mg/L","average":{"value":1.12,"display":"1.12"},"range":null,"ratio":0.28}],"measurements":[{"value":1.12,"low":null,"high":null,"kind":"point","display":"1.12","units":"mg/L","statisticType":"running_annual_avg","samplingContext":"zone:Distribution System Highest","rawVerbatim":"1.12"},{"value":2,"low":0.13,"high":2,"kind":"range","display":"0.13–2","units":"mg/L","statisticType":"range","samplingContext":"zone:Distribution System","rawVerbatim":"0.13 - 2.00"}]},{"analyteId":"cis_dichloroethylene_12","name":"Cis Dichloroethylene 12","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":0.3,"low":null,"high":null,"kind":"point","display":"0.3","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","censored":false,"detectionLimit":null,"rawVerbatim":"0.3"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1.2,"low":0,"high":1.2,"kind":"range","display":"0–1.2","units":null,"statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"ND - 1.2"},{"value":0.3,"low":null,"high":null,"kind":"point","display":"0.3","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"0.3"}]},{"analyteId":"pfhxs","name":"Perfluorohexanesulfonic acid","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"355-46-4","whatItIs":"Perfluorohexanesulfonic acid, a PFAS 'forever chemical.'","whyItMatters":"Regulated by the EPA at 10 parts per trillion and included in the PFAS Hazard Index.","measured":{"value":0.0004,"low":null,"high":null,"kind":"point","display":"0.0004","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.0004"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.004,"low":0,"high":0.004,"kind":"range","display":"0–0.004","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 0.004"},{"value":0.0004,"low":null,"high":null,"kind":"point","display":"0.0004","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"0.0004"},{"value":4.3,"low":null,"high":null,"kind":"point","display":"4.3","units":"ng/L","statisticType":"reported_level","samplingContext":"plant:Well 18","rawVerbatim":"4.3 ng/L"}]},{"analyteId":"pfoa","name":"PFOA","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"335-67-1","whatItIs":"Perfluorooctanoic acid, a PFAS 'forever chemical' once used in nonstick and stain-resistant products.","whyItMatters":"Linked to cancer, liver damage, and immune effects; the EPA set an enforceable limit of 4 parts per trillion.","measured":{"value":0.00062,"low":null,"high":null,"kind":"point","display":"0.00062","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.00062"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.0062,"low":0,"high":0.0062,"kind":"range","display":"0–0.0062","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 0.0062"},{"value":8.2,"low":null,"high":null,"kind":"point","display":"8.2","units":"ng/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"8.2 ng/L"},{"value":0.00062,"low":null,"high":null,"kind":"point","display":"0.00062","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"0.00062"}]},{"analyteId":"pfos","name":"PFOS","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"1763-23-1","whatItIs":"Perfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings.","whyItMatters":"Linked to cancer, thyroid disease, and immune effects; the EPA set an enforceable limit of 4 parts per trillion.","measured":{"value":0.0014,"low":null,"high":null,"kind":"point","display":"0.0014","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.0014"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":18,"low":null,"high":null,"kind":"point","display":"18","units":"ng/L","statisticType":"reported_level","samplingContext":"plant:Well 18","rawVerbatim":"18.0 ng/L"},{"value":0.0014,"low":null,"high":null,"kind":"point","display":"0.0014","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"0.0014"},{"value":0.0014,"low":0,"high":0.0014,"kind":"range","display":"0–0.0014","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"ND - 0.0014"},{"value":9.3,"low":null,"high":null,"kind":"point","display":"9.3","units":"ng/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"9.3 ng/L"}]},{"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":null,"statisticType":"average","samplingContext":"plant:Groundwater","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":{"type":"MCL","value":5,"units":null,"enforceable":true},"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":null,"statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":null,"statisticType":"range","samplingContext":"plant:Groundwater","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":3.5,"low":null,"high":null,"kind":"point","display":"3.5","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","censored":false,"detectionLimit":null,"rawVerbatim":"3.5"},"federalStandard":{"type":"MCL","value":15,"units":null,"enforceable":true},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":6.9,"low":0,"high":6.9,"kind":"range","display":"0–6.9","units":null,"statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"ND - 6.9"},{"value":3.5,"low":null,"high":null,"kind":"point","display":"3.5","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"3.5"}]},{"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":3.2,"low":null,"high":null,"kind":"point","display":"3.2","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","censored":false,"detectionLimit":null,"rawVerbatim":"3.2"},"federalStandard":{"type":"MCL","value":20,"units":null,"enforceable":true},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":5.8,"low":0,"high":5.8,"kind":"range","display":"0–5.8","units":null,"statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"ND - 5.8"},{"value":3.2,"low":null,"high":null,"kind":"point","display":"3.2","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"3.2"}]},{"analyteId":"tetrachloroethylene","name":"Tetrachloroethylene","family":"voc_pesticide","familyLabel":"VOCs & pesticides","casrn":"127-18-4","whatItIs":"An industrial solvent (PCE) used in dry cleaning and degreasing.","whyItMatters":"A likely human carcinogen; long-term exposure above the federal limit can damage the liver and kidneys.","measured":{"value":0.2,"low":null,"high":null,"kind":"point","display":"0.2","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","censored":false,"detectionLimit":null,"rawVerbatim":"0.2"},"federalStandard":{"type":"MCL","value":5,"units":null,"enforceable":true},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.2,"low":null,"high":null,"kind":"point","display":"0.2","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"0.2"},{"value":0.8,"low":0,"high":0.8,"kind":"range","display":"0–0.8","units":null,"statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"ND - 0.8"}]},{"analyteId":"trichloroethylene","name":"Trichloroethylene","family":"voc_pesticide","familyLabel":"VOCs & pesticides","casrn":"79-01-6","whatItIs":"An industrial solvent (TCE) used in metal degreasing.","whyItMatters":"A known human carcinogen; long-term exposure above the federal limit can damage the liver.","measured":{"value":0.4,"low":null,"high":null,"kind":"point","display":"0.4","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","censored":false,"detectionLimit":null,"rawVerbatim":"0.4"},"federalStandard":{"type":"MCL","value":5,"units":null,"enforceable":true},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.4,"low":null,"high":null,"kind":"point","display":"0.4","units":null,"statisticType":"average","samplingContext":"plant:Groundwater","rawVerbatim":"0.4"},{"value":1.4,"low":0,"high":1.4,"kind":"range","display":"0–1.4","units":null,"statisticType":"range","samplingContext":"plant:Groundwater","rawVerbatim":"ND - 1.4"}]}]}}