{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-05-25T21:07:12.128Z"},"system":{"slug":"metro__121__tallahassee","name":"Tallahassee","state":"FL","year":2024,"url":"https://www.thewatermap.com/water/fl/tallahassee/2024","apiUrl":"https://www.thewatermap.com/api/water/fl/tallahassee/2024","markdownUrl":"https://www.thewatermap.com/water/fl/tallahassee/2024/llms.txt","coordinates":{"latitude":30.4380832,"longitude":-84.2809332},"contaminantsMeasured":21,"contaminantsWithFederalLimit":18,"contaminantsAtOrAboveLimit":1,"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":0.81,"low":null,"high":null,"kind":"point","display":"0.81","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.81"},"federalStandard":{"type":"MRDLG","value":4,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.91,"low":0.73,"high":0.91,"kind":"range","display":"0.73–0.91","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.73 – 0.91"},{"value":0.81,"low":null,"high":null,"kind":"point","display":"0.81","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.81"}]}]},{"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":8.48,"low":null,"high":null,"kind":"point","display":"8.48","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"8.48"},"federalStandard":{"type":"MCL","value":60,"units":"ug/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":8.48,"low":null,"high":null,"kind":"point","display":"8.48","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"8.48"},{"value":14.16,"low":0,"high":14.16,"kind":"range","display":"0–14.16","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 14.16"}]},{"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":16.78,"low":null,"high":null,"kind":"point","display":"16.78","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"16.78"},"federalStandard":{"type":"MCL","value":80,"units":"ug/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":15.41,"low":0,"high":15.41,"kind":"range","display":"0–15.41","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 15.41"},{"value":16.78,"low":null,"high":null,"kind":"point","display":"16.78","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"16.78"}]}]},{"family":"inorganic","familyLabel":"Inorganic chemicals","contaminants":[{"analyteId":"cyanide","name":"Cyanide","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"57-12-5","whatItIs":null,"whyItMatters":null,"measured":{"value":5.2,"low":0,"high":5.2,"kind":"range","display":"0–5.2","units":"ug/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"ND – 5.2"},"federalStandard":{"type":"MCLG","value":200,"units":"ug/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":5.2,"low":0,"high":5.2,"kind":"range","display":"0–5.2","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 5.2"},{"value":5.2,"low":null,"high":null,"kind":"point","display":"5.2","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"5.2"}]},{"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":0.85,"low":0.34,"high":0.85,"kind":"range","display":"0.34–0.85","units":"mg/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.34 – 0.85"},"federalStandard":{"type":"MCLG","value":4,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.85,"low":0.34,"high":0.85,"kind":"range","display":"0.34–0.85","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.34 – 0.85"},{"value":0.85,"low":null,"high":null,"kind":"point","display":"0.85","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0.85"}]},{"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":0.67,"low":null,"high":null,"kind":"point","display":"0.67","units":"mg/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.67"},"federalStandard":{"type":"MCLG","value":10,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.67,"low":null,"high":null,"kind":"point","display":"0.67","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0.67"},{"value":0.67,"low":0.059,"high":0.67,"kind":"range","display":"0.059–0.67","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.059 – 0.67"}]}]},{"family":"metal","familyLabel":"Metals","contaminants":[{"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":1.3,"low":null,"high":null,"kind":"point","display":"1.3","units":"ug/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1.3"},"federalStandard":{"type":"MCLG","value":0,"units":"ug/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1.3,"low":null,"high":null,"kind":"point","display":"1.3","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"1.3"},{"value":1.3,"low":0,"high":1.3,"kind":"range","display":"0–1.3","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 1.3"}]},{"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":0.025,"low":0.0081,"high":0.025,"kind":"range","display":"0.0081–0.025","units":"mg/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.0081 – 0.025"},"federalStandard":{"type":"MCLG","value":2,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.025,"low":0.0081,"high":0.025,"kind":"range","display":"0.0081–0.025","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.0081 – 0.025"},{"value":0.025,"low":null,"high":null,"kind":"point","display":"0.025","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0.025"}]},{"analyteId":"chromium_total","name":"Chromium, Total","family":"metal","familyLabel":"Metals","casrn":"7440-47-3","whatItIs":"Total chromium — the sum of all chromium forms, from natural deposits and industrial discharge.","whyItMatters":"Long-term exposure above the federal limit can cause allergic dermatitis; includes hexavalent chromium.","measured":{"value":1.6,"low":0,"high":1.6,"kind":"range","display":"0–1.6","units":"ug/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"ND – 1.6"},"federalStandard":{"type":"MCLG","value":100,"units":"ug/L","enforceable":false},"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":1.6,"low":null,"high":null,"kind":"point","display":"1.6","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"1.6"}]},{"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":0.52,"low":null,"high":null,"kind":"point","display":"0.52","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0.52"},"federalStandard":{"type":"MCLG","value":1.3,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.68,"low":0.099,"high":0.68,"kind":"range","display":"0.099–0.68","units":"mg/L","statisticType":"range","samplingContext":"plant:of Tap Sample Results","rawVerbatim":"0.099 – 0.68"},{"value":0.52,"low":null,"high":null,"kind":"point","display":"0.52","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.52"}]},{"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":1.4,"low":null,"high":null,"kind":"point","display":"1.4","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"1.4"},"federalStandard":{"type":"MCLG","value":0,"units":"ug/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.6,"low":null,"high":null,"kind":"point","display":"0.6","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0.6"},{"value":1.4,"low":null,"high":null,"kind":"point","display":"1.4","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"1.4"},{"value":0.6,"low":0,"high":0.6,"kind":"range","display":"0–0.6","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 0.6"},{"value":19.8,"low":0,"high":19.8,"kind":"range","display":"0–19.8","units":"ug/L","statisticType":"range","samplingContext":"plant:of Tap Sample Results","rawVerbatim":"ND – 19.8"}]},{"analyteId":"mercury","name":"Mercury","family":"metal","familyLabel":"Metals","casrn":"7439-97-6","whatItIs":"A toxic metal from erosion of natural deposits and industrial runoff.","whyItMatters":"Long-term exposure above the federal limit can damage the kidneys.","measured":{"value":0.1,"low":0,"high":0.1,"kind":"range","display":"0–0.1","units":"ug/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"ND – 0.1"},"federalStandard":{"type":"MCLG","value":2,"units":"ug/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.1,"low":0,"high":0.1,"kind":"range","display":"0–0.1","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 0.1"},{"value":0.1,"low":null,"high":null,"kind":"point","display":"0.1","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0.1"}]},{"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":4.21,"low":null,"high":null,"kind":"point","display":"4.21","units":"mg/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"4.21"},"federalStandard":{"type":"MCL","value":160,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":4.21,"low":null,"high":null,"kind":"point","display":"4.21","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"4.21"},{"value":4.21,"low":2.46,"high":4.21,"kind":"range","display":"2.46–4.21","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2.46 – 4.21"}]}]},{"family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","contaminants":[{"analyteId":"pfbs","name":"Perfluorobutanesulfonic acid","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"375-73-5","whatItIs":"Perfluorobutanesulfonic acid, a shorter-chain PFAS 'forever chemical.'","whyItMatters":"Has no standalone limit but is part of the EPA PFAS Hazard Index that limits PFAS in combination.","measured":{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0"},{"value":0.0032,"low":0,"high":0.0032,"kind":"range","display":"0–0.0032","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 0.0032"}]},{"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,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.0035,"low":0,"high":0.0035,"kind":"range","display":"0–0.0035","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 0.0035"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0"}]},{"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,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.0079,"low":0,"high":0.0079,"kind":"range","display":"0–0.0079","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 0.0079"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0"}]}]},{"family":"physical_aggregate","familyLabel":"Physical & aggregate","contaminants":[{"analyteId":"odor","name":"Odor","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of detectable smell in the water.","whyItMatters":"Regulated only as a secondary (cosmetic) standard.","measured":{"value":16,"low":null,"high":null,"kind":"point","display":"16","units":null,"statisticType":"max","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"16*"},"federalStandard":{"type":"MCL","value":3,"units":null,"enforceable":true},"status":{"key":"over","label":"At or above the limit"},"breakdowns":[],"measurements":[{"value":16,"low":null,"high":null,"kind":"point","display":"16","units":null,"statisticType":"max","samplingContext":"system","rawVerbatim":"16*"},{"value":16,"low":0,"high":16,"kind":"range","display":"0–16","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"0 – 16"}]}]},{"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":0.58,"low":null,"high":null,"kind":"point","display":"0.58","units":"pCi/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.58"},"federalStandard":{"type":"MCLG","value":0,"units":"pCi/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.58,"low":null,"high":null,"kind":"point","display":"0.58","units":"pCi/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0.58"},{"value":0.58,"low":0,"high":0.58,"kind":"range","display":"0–0.58","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 0.58"}]},{"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":4.82,"low":null,"high":null,"kind":"point","display":"4.82","units":"pCi/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"4.82"},"federalStandard":{"type":"MCLG","value":0,"units":"pCi/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":4.82,"low":null,"high":null,"kind":"point","display":"4.82","units":"pCi/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"4.82"},{"value":4.82,"low":0,"high":4.82,"kind":"range","display":"0–4.82","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 4.82"}]},{"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":0.5,"low":null,"high":null,"kind":"point","display":"0.5","units":"ug/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.5"},"federalStandard":{"type":"MCLG","value":0,"units":"ug/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.5,"low":null,"high":null,"kind":"point","display":"0.5","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0.5"}]}]},{"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":1.78,"low":null,"high":null,"kind":"point","display":"1.78","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1.78"},"federalStandard":{"type":"MCLG","value":0,"units":"ug/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1.78,"low":null,"high":null,"kind":"point","display":"1.78","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"1.78"},{"value":2.12,"low":0,"high":2.12,"kind":"range","display":"0–2.12","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 2.12"}]}]}],"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":0.81,"low":null,"high":null,"kind":"point","display":"0.81","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.81"},"federalStandard":{"type":"MRDLG","value":4,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.91,"low":0.73,"high":0.91,"kind":"range","display":"0.73–0.91","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.73 – 0.91"},{"value":0.81,"low":null,"high":null,"kind":"point","display":"0.81","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.81"}]},{"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":8.48,"low":null,"high":null,"kind":"point","display":"8.48","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"8.48"},"federalStandard":{"type":"MCL","value":60,"units":"ug/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":8.48,"low":null,"high":null,"kind":"point","display":"8.48","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"8.48"},{"value":14.16,"low":0,"high":14.16,"kind":"range","display":"0–14.16","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 14.16"}]},{"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":16.78,"low":null,"high":null,"kind":"point","display":"16.78","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"16.78"},"federalStandard":{"type":"MCL","value":80,"units":"ug/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":15.41,"low":0,"high":15.41,"kind":"range","display":"0–15.41","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 15.41"},{"value":16.78,"low":null,"high":null,"kind":"point","display":"16.78","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"16.78"}]},{"analyteId":"cyanide","name":"Cyanide","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"57-12-5","whatItIs":null,"whyItMatters":null,"measured":{"value":5.2,"low":0,"high":5.2,"kind":"range","display":"0–5.2","units":"ug/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"ND – 5.2"},"federalStandard":{"type":"MCLG","value":200,"units":"ug/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":5.2,"low":0,"high":5.2,"kind":"range","display":"0–5.2","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 5.2"},{"value":5.2,"low":null,"high":null,"kind":"point","display":"5.2","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"5.2"}]},{"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":0.85,"low":0.34,"high":0.85,"kind":"range","display":"0.34–0.85","units":"mg/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.34 – 0.85"},"federalStandard":{"type":"MCLG","value":4,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.85,"low":0.34,"high":0.85,"kind":"range","display":"0.34–0.85","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.34 – 0.85"},{"value":0.85,"low":null,"high":null,"kind":"point","display":"0.85","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0.85"}]},{"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":0.67,"low":null,"high":null,"kind":"point","display":"0.67","units":"mg/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.67"},"federalStandard":{"type":"MCLG","value":10,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.67,"low":null,"high":null,"kind":"point","display":"0.67","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0.67"},{"value":0.67,"low":0.059,"high":0.67,"kind":"range","display":"0.059–0.67","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.059 – 0.67"}]},{"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":1.3,"low":null,"high":null,"kind":"point","display":"1.3","units":"ug/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1.3"},"federalStandard":{"type":"MCLG","value":0,"units":"ug/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1.3,"low":null,"high":null,"kind":"point","display":"1.3","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"1.3"},{"value":1.3,"low":0,"high":1.3,"kind":"range","display":"0–1.3","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 1.3"}]},{"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":0.025,"low":0.0081,"high":0.025,"kind":"range","display":"0.0081–0.025","units":"mg/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.0081 – 0.025"},"federalStandard":{"type":"MCLG","value":2,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.025,"low":0.0081,"high":0.025,"kind":"range","display":"0.0081–0.025","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.0081 – 0.025"},{"value":0.025,"low":null,"high":null,"kind":"point","display":"0.025","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0.025"}]},{"analyteId":"chromium_total","name":"Chromium, Total","family":"metal","familyLabel":"Metals","casrn":"7440-47-3","whatItIs":"Total chromium — the sum of all chromium forms, from natural deposits and industrial discharge.","whyItMatters":"Long-term exposure above the federal limit can cause allergic dermatitis; includes hexavalent chromium.","measured":{"value":1.6,"low":0,"high":1.6,"kind":"range","display":"0–1.6","units":"ug/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"ND – 1.6"},"federalStandard":{"type":"MCLG","value":100,"units":"ug/L","enforceable":false},"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":1.6,"low":null,"high":null,"kind":"point","display":"1.6","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"1.6"}]},{"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":0.52,"low":null,"high":null,"kind":"point","display":"0.52","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0.52"},"federalStandard":{"type":"MCLG","value":1.3,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.68,"low":0.099,"high":0.68,"kind":"range","display":"0.099–0.68","units":"mg/L","statisticType":"range","samplingContext":"plant:of Tap Sample Results","rawVerbatim":"0.099 – 0.68"},{"value":0.52,"low":null,"high":null,"kind":"point","display":"0.52","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.52"}]},{"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":1.4,"low":null,"high":null,"kind":"point","display":"1.4","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"1.4"},"federalStandard":{"type":"MCLG","value":0,"units":"ug/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.6,"low":null,"high":null,"kind":"point","display":"0.6","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0.6"},{"value":1.4,"low":null,"high":null,"kind":"point","display":"1.4","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"1.4"},{"value":0.6,"low":0,"high":0.6,"kind":"range","display":"0–0.6","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 0.6"},{"value":19.8,"low":0,"high":19.8,"kind":"range","display":"0–19.8","units":"ug/L","statisticType":"range","samplingContext":"plant:of Tap Sample Results","rawVerbatim":"ND – 19.8"}]},{"analyteId":"mercury","name":"Mercury","family":"metal","familyLabel":"Metals","casrn":"7439-97-6","whatItIs":"A toxic metal from erosion of natural deposits and industrial runoff.","whyItMatters":"Long-term exposure above the federal limit can damage the kidneys.","measured":{"value":0.1,"low":0,"high":0.1,"kind":"range","display":"0–0.1","units":"ug/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"ND – 0.1"},"federalStandard":{"type":"MCLG","value":2,"units":"ug/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.1,"low":0,"high":0.1,"kind":"range","display":"0–0.1","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 0.1"},{"value":0.1,"low":null,"high":null,"kind":"point","display":"0.1","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0.1"}]},{"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":4.21,"low":null,"high":null,"kind":"point","display":"4.21","units":"mg/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"4.21"},"federalStandard":{"type":"MCL","value":160,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":4.21,"low":null,"high":null,"kind":"point","display":"4.21","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"4.21"},{"value":4.21,"low":2.46,"high":4.21,"kind":"range","display":"2.46–4.21","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"2.46 – 4.21"}]},{"analyteId":"pfbs","name":"Perfluorobutanesulfonic acid","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"375-73-5","whatItIs":"Perfluorobutanesulfonic acid, a shorter-chain PFAS 'forever chemical.'","whyItMatters":"Has no standalone limit but is part of the EPA PFAS Hazard Index that limits PFAS in combination.","measured":{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0"},{"value":0.0032,"low":0,"high":0.0032,"kind":"range","display":"0–0.0032","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 0.0032"}]},{"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,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.0035,"low":0,"high":0.0035,"kind":"range","display":"0–0.0035","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 0.0035"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0"}]},{"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,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.0079,"low":0,"high":0.0079,"kind":"range","display":"0–0.0079","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 0.0079"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0"}]},{"analyteId":"odor","name":"Odor","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of detectable smell in the water.","whyItMatters":"Regulated only as a secondary (cosmetic) standard.","measured":{"value":16,"low":null,"high":null,"kind":"point","display":"16","units":null,"statisticType":"max","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"16*"},"federalStandard":{"type":"MCL","value":3,"units":null,"enforceable":true},"status":{"key":"over","label":"At or above the limit"},"breakdowns":[],"measurements":[{"value":16,"low":null,"high":null,"kind":"point","display":"16","units":null,"statisticType":"max","samplingContext":"system","rawVerbatim":"16*"},{"value":16,"low":0,"high":16,"kind":"range","display":"0–16","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"0 – 16"}]},{"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":0.58,"low":null,"high":null,"kind":"point","display":"0.58","units":"pCi/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.58"},"federalStandard":{"type":"MCLG","value":0,"units":"pCi/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.58,"low":null,"high":null,"kind":"point","display":"0.58","units":"pCi/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0.58"},{"value":0.58,"low":0,"high":0.58,"kind":"range","display":"0–0.58","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 0.58"}]},{"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":4.82,"low":null,"high":null,"kind":"point","display":"4.82","units":"pCi/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"4.82"},"federalStandard":{"type":"MCLG","value":0,"units":"pCi/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":4.82,"low":null,"high":null,"kind":"point","display":"4.82","units":"pCi/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"4.82"},{"value":4.82,"low":0,"high":4.82,"kind":"range","display":"0–4.82","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 4.82"}]},{"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":0.5,"low":null,"high":null,"kind":"point","display":"0.5","units":"ug/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.5"},"federalStandard":{"type":"MCLG","value":0,"units":"ug/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.5,"low":null,"high":null,"kind":"point","display":"0.5","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0.5"}]},{"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":1.78,"low":null,"high":null,"kind":"point","display":"1.78","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1.78"},"federalStandard":{"type":"MCLG","value":0,"units":"ug/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1.78,"low":null,"high":null,"kind":"point","display":"1.78","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"1.78"},{"value":2.12,"low":0,"high":2.12,"kind":"range","display":"0–2.12","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND – 2.12"}]}]}}