{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-07-10T00:51:07.195Z"},"system":{"slug":"metro__224__rochester","name":"Rochester","state":"MN","year":2025,"url":"https://www.thewatermap.com/water/mn/rochester/2025","apiUrl":"https://www.thewatermap.com/api/water/mn/rochester/2025","markdownUrl":"https://www.thewatermap.com/water/mn/rochester/2025/llms.txt","coordinates":{"latitude":44.0234387,"longitude":-92.4630182},"contaminantsMeasured":15,"contaminantsWithFederalLimit":10,"contaminantsAtOrAboveLimit":0,"contaminantsApproachingLimit":2,"source":{"type":"Consumer Confidence Report (CCR)","description":"Figures are transcribed from the water utility's own annual Consumer Confidence Report, cross-checked by a second model, and approved by a person before publishing."},"families":[{"family":"disinfectant","familyLabel":"Disinfectants","contaminants":[{"analyteId":"chlorine","name":"Chlorine","family":"disinfectant","familyLabel":"Disinfectants","casrn":null,"whatItIs":"A disinfectant added to drinking water to kill bacteria and viruses.","whyItMatters":"Effective and necessary, but high residual levels can cause taste and odor issues; the EPA caps the residual disinfectant level.","measured":{"value":1.07,"low":0.94,"high":1.07,"kind":"range","display":"0.94–1.07","units":"mg/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","censored":false,"detectionLimit":null,"rawVerbatim":"0.94 - 1.07 ppm"},"federalStandard":{"type":"MCLG","value":4,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1.07,"low":0.94,"high":1.07,"kind":"range","display":"0.94–1.07","units":"mg/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"0.94 - 1.07 ppm"},{"value":1.02,"low":null,"high":null,"kind":"point","display":"1.02","units":"mg/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","rawVerbatim":"1.02 ppm"}]}]},{"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":5.5,"low":1.2,"high":5.5,"kind":"range","display":"1.2–5.5","units":"ug/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","censored":false,"detectionLimit":null,"rawVerbatim":"1.20 - 5.50 ppb"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":4.1,"low":null,"high":null,"kind":"point","display":"4.1","units":"ug/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","rawVerbatim":"4.1 ppb"},{"value":5.5,"low":1.2,"high":5.5,"kind":"range","display":"1.2–5.5","units":"ug/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"1.20 - 5.50 ppb"}]}]},{"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":0.72,"low":0.69,"high":0.72,"kind":"range","display":"0.69–0.72","units":"mg/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","censored":false,"detectionLimit":null,"rawVerbatim":"0.69 - 0.72 ppm"},"federalStandard":{"type":"MCLG","value":4,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.71,"low":null,"high":null,"kind":"point","display":"0.71","units":"mg/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","rawVerbatim":"0.71 ppm"},{"value":0.72,"low":0.69,"high":0.72,"kind":"range","display":"0.69–0.72","units":"mg/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"0.69 - 0.72 ppm"}]},{"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":0.19,"low":null,"high":null,"kind":"point","display":"0.19","units":"mg/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","censored":false,"detectionLimit":null,"rawVerbatim":"0.19 ppm"},"federalStandard":{"type":"MCLG","value":10,"units":"mg/L","enforceable":false},"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":"max","samplingContext":"plant:Average or Highest Single Test Result","rawVerbatim":"0.19 ppm"},{"value":0.19,"low":0,"high":0.19,"kind":"range","display":"0–0.19","units":"mg/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"0.00 - 0.19 ppm"}]},{"analyteId":"sulfate","name":"Sulfate","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"14808-79-8","whatItIs":"A naturally occurring mineral from rock and soil.","whyItMatters":"No health-based federal limit; high levels can have a laxative effect and a bitter taste.","measured":{"value":31.8,"low":null,"high":null,"kind":"point","display":"31.8","units":"mg/L","statisticType":"max","samplingContext":"plant:Average Result or Highest Single Test Result","censored":false,"detectionLimit":null,"rawVerbatim":"31.8 ppm"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":31.8,"low":null,"high":null,"kind":"point","display":"31.8","units":"mg/L","statisticType":"max","samplingContext":"plant:Average Result or Highest Single Test Result","rawVerbatim":"31.8 ppm"},{"value":31.8,"low":14.3,"high":31.8,"kind":"range","display":"14.3–31.8","units":"mg/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"14.30 - 31.80 ppm"}]}]},{"family":"metal","familyLabel":"Metals","contaminants":[{"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":"max","samplingContext":"plant:Average or Highest Single Test Result","censored":false,"detectionLimit":null,"rawVerbatim":"0.09 ppm"},"federalStandard":{"type":"MCLG","value":2,"units":"mg/L","enforceable":false},"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":"max","samplingContext":"plant:Average or Highest Single Test Result","rawVerbatim":"0.09 ppm"},{"value":0.0899,"low":0.0351,"high":0.0899,"kind":"range","display":"0.0351–0.0899","units":"mg/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"0.0351 - 0.0899 ppm"}]},{"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":0.76,"low":null,"high":null,"kind":"point","display":"0.76","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0.76 ppm"},"federalStandard":{"type":"MCLG","value":1.3,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"plant:of Detected Test Results","label":"of Detected Test Results","kind":"plant","units":"mg/L","average":null,"range":{"low":0.03,"high":1.01,"display":"0.03–1.01"},"ratio":0.7769230769230769},{"context":"plant:Number of Homes with High Levels","label":"Number of Homes with High Levels","kind":"plant","units":"mg/L","average":null,"range":null,"ratio":0}],"measurements":[{"value":0.76,"low":null,"high":null,"kind":"point","display":"0.76","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.76 ppm"},{"value":1.01,"low":0.03,"high":1.01,"kind":"range","display":"0.03–1.01","units":"mg/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"0.03 - 1.01 ppm"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"mg/L","statisticType":"reported_level","samplingContext":"plant:Number of Homes with High Levels","rawVerbatim":"0 out of 50"}]},{"analyteId":"lead","name":"Lead","family":"metal","familyLabel":"Metals","casrn":null,"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":0.007,"low":null,"high":null,"kind":"point","display":"0.007","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"lead 90th-percentile 0.007 mg/L (EPA SDWIS LCR, 1 round(s), 2025)"},"federalStandard":{"type":"AL","value":0.015,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.007,"low":null,"high":null,"kind":"point","display":"0.007","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"lead 90th-percentile 0.007 mg/L (EPA SDWIS LCR, 1 round(s), 2025)"}]},{"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":10.8,"low":null,"high":null,"kind":"point","display":"10.8","units":"ug/L","statisticType":"max","samplingContext":"plant:Average Result or Highest Single Test Result","censored":false,"detectionLimit":null,"rawVerbatim":"10.8 ppb"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":10.8,"low":null,"high":null,"kind":"point","display":"10.8","units":"ug/L","statisticType":"max","samplingContext":"plant:Average Result or Highest Single Test Result","rawVerbatim":"10.8 ppb"},{"value":10.8,"low":0,"high":10.8,"kind":"range","display":"0–10.8","units":"ug/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"0.00 - 10.80 ppb"}]},{"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":8.77,"low":null,"high":null,"kind":"point","display":"8.77","units":"mg/L","statisticType":"max","samplingContext":"plant:Average Result or Highest Single Test Result","censored":false,"detectionLimit":null,"rawVerbatim":"8.77 ppm"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":8.77,"low":null,"high":null,"kind":"point","display":"8.77","units":"mg/L","statisticType":"max","samplingContext":"plant:Average Result or Highest Single Test Result","rawVerbatim":"8.77 ppm"},{"value":8.77,"low":2.25,"high":8.77,"kind":"range","display":"2.25–8.77","units":"mg/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"2.25 - 8.77 ppm"}]}]},{"family":"other","familyLabel":"Other","contaminants":[{"analyteId":"heptachlor_epoxide","name":"Heptachlor Epoxide","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":0.02,"low":null,"high":null,"kind":"point","display":"0.02","units":"ug/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","censored":false,"detectionLimit":null,"rawVerbatim":"0.02 ug/L"},"federalStandard":{"type":"MCLG","value":0,"units":"ug/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.02,"low":null,"high":null,"kind":"point","display":"0.02","units":"ug/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","rawVerbatim":"0.02 ug/L"}]}]},{"family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","contaminants":[{"analyteId":"pfba","name":"PFBA","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"375-22-4","whatItIs":"Perfluorobutanoic acid, a shorter-chain PFAS 'forever chemical.'","whyItMatters":"Monitored under EPA rules; persistent in the environment and the human body.","measured":{"value":3.4,"low":null,"high":null,"kind":"point","display":"3.4","units":"ng/L","statisticType":"max","samplingContext":"plant:Average Result or Highest Single Test Result","censored":false,"detectionLimit":null,"rawVerbatim":"3.4 ppt"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":3.4,"low":null,"high":null,"kind":"point","display":"3.4","units":"ng/L","statisticType":"max","samplingContext":"plant:Average Result or Highest Single Test Result","rawVerbatim":"3.4 ppt"},{"value":3.4,"low":0,"high":3.4,"kind":"range","display":"0–3.4","units":"ng/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"0.00 - 3.40 ppt"}]},{"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":0.97,"low":0,"high":0.97,"kind":"range","display":"0–0.97","units":"ng/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","censored":false,"detectionLimit":null,"rawVerbatim":"0 - 0.97 ppt"},"federalStandard":{"type":"MCLG","value":0,"units":"ng/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.8,"low":null,"high":null,"kind":"point","display":"0.8","units":"ng/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","rawVerbatim":"0.8 ppt"},{"value":0.97,"low":0,"high":0.97,"kind":"range","display":"0–0.97","units":"ng/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"0 - 0.97 ppt"}]}]},{"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":4.9,"low":null,"high":null,"kind":"point","display":"4.9","units":"pCi/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","censored":false,"detectionLimit":null,"rawVerbatim":"4.9 pCi/l"},"federalStandard":{"type":"MCLG","value":0,"units":"pCi/L","enforceable":false},"status":{"key":"approaching","label":"Approaching the limit"},"breakdowns":[],"measurements":[{"value":4.9,"low":null,"high":null,"kind":"point","display":"4.9","units":"pCi/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","rawVerbatim":"4.9 pCi/l"},{"value":4.9,"low":0,"high":4.9,"kind":"range","display":"0–4.9","units":"pCi/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"0.0 - 4.9 pCi/l"}]},{"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":14,"low":null,"high":null,"kind":"point","display":"14","units":"pCi/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","censored":false,"detectionLimit":null,"rawVerbatim":"14 pCi/l"},"federalStandard":{"type":"MCLG","value":0,"units":"pCi/L","enforceable":false},"status":{"key":"approaching","label":"Approaching the limit"},"breakdowns":[],"measurements":[{"value":14,"low":null,"high":null,"kind":"point","display":"14","units":"pCi/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","rawVerbatim":"14 pCi/l"},{"value":14,"low":4.3,"high":14,"kind":"range","display":"4.3–14","units":"pCi/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"4.3 - 14.0 pCi/l"}]}]}],"contaminants":[{"analyteId":"chlorine","name":"Chlorine","family":"disinfectant","familyLabel":"Disinfectants","casrn":null,"whatItIs":"A disinfectant added to drinking water to kill bacteria and viruses.","whyItMatters":"Effective and necessary, but high residual levels can cause taste and odor issues; the EPA caps the residual disinfectant level.","measured":{"value":1.07,"low":0.94,"high":1.07,"kind":"range","display":"0.94–1.07","units":"mg/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","censored":false,"detectionLimit":null,"rawVerbatim":"0.94 - 1.07 ppm"},"federalStandard":{"type":"MCLG","value":4,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1.07,"low":0.94,"high":1.07,"kind":"range","display":"0.94–1.07","units":"mg/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"0.94 - 1.07 ppm"},{"value":1.02,"low":null,"high":null,"kind":"point","display":"1.02","units":"mg/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","rawVerbatim":"1.02 ppm"}]},{"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":5.5,"low":1.2,"high":5.5,"kind":"range","display":"1.2–5.5","units":"ug/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","censored":false,"detectionLimit":null,"rawVerbatim":"1.20 - 5.50 ppb"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":4.1,"low":null,"high":null,"kind":"point","display":"4.1","units":"ug/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","rawVerbatim":"4.1 ppb"},{"value":5.5,"low":1.2,"high":5.5,"kind":"range","display":"1.2–5.5","units":"ug/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"1.20 - 5.50 ppb"}]},{"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":0.72,"low":0.69,"high":0.72,"kind":"range","display":"0.69–0.72","units":"mg/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","censored":false,"detectionLimit":null,"rawVerbatim":"0.69 - 0.72 ppm"},"federalStandard":{"type":"MCLG","value":4,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.71,"low":null,"high":null,"kind":"point","display":"0.71","units":"mg/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","rawVerbatim":"0.71 ppm"},{"value":0.72,"low":0.69,"high":0.72,"kind":"range","display":"0.69–0.72","units":"mg/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"0.69 - 0.72 ppm"}]},{"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":0.19,"low":null,"high":null,"kind":"point","display":"0.19","units":"mg/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","censored":false,"detectionLimit":null,"rawVerbatim":"0.19 ppm"},"federalStandard":{"type":"MCLG","value":10,"units":"mg/L","enforceable":false},"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":"max","samplingContext":"plant:Average or Highest Single Test Result","rawVerbatim":"0.19 ppm"},{"value":0.19,"low":0,"high":0.19,"kind":"range","display":"0–0.19","units":"mg/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"0.00 - 0.19 ppm"}]},{"analyteId":"sulfate","name":"Sulfate","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"14808-79-8","whatItIs":"A naturally occurring mineral from rock and soil.","whyItMatters":"No health-based federal limit; high levels can have a laxative effect and a bitter taste.","measured":{"value":31.8,"low":null,"high":null,"kind":"point","display":"31.8","units":"mg/L","statisticType":"max","samplingContext":"plant:Average Result or Highest Single Test Result","censored":false,"detectionLimit":null,"rawVerbatim":"31.8 ppm"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":31.8,"low":null,"high":null,"kind":"point","display":"31.8","units":"mg/L","statisticType":"max","samplingContext":"plant:Average Result or Highest Single Test Result","rawVerbatim":"31.8 ppm"},{"value":31.8,"low":14.3,"high":31.8,"kind":"range","display":"14.3–31.8","units":"mg/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"14.30 - 31.80 ppm"}]},{"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":"max","samplingContext":"plant:Average or Highest Single Test Result","censored":false,"detectionLimit":null,"rawVerbatim":"0.09 ppm"},"federalStandard":{"type":"MCLG","value":2,"units":"mg/L","enforceable":false},"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":"max","samplingContext":"plant:Average or Highest Single Test Result","rawVerbatim":"0.09 ppm"},{"value":0.0899,"low":0.0351,"high":0.0899,"kind":"range","display":"0.0351–0.0899","units":"mg/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"0.0351 - 0.0899 ppm"}]},{"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":0.76,"low":null,"high":null,"kind":"point","display":"0.76","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0.76 ppm"},"federalStandard":{"type":"MCLG","value":1.3,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"plant:of Detected Test Results","label":"of Detected Test Results","kind":"plant","units":"mg/L","average":null,"range":{"low":0.03,"high":1.01,"display":"0.03–1.01"},"ratio":0.7769230769230769},{"context":"plant:Number of Homes with High Levels","label":"Number of Homes with High Levels","kind":"plant","units":"mg/L","average":null,"range":null,"ratio":0}],"measurements":[{"value":0.76,"low":null,"high":null,"kind":"point","display":"0.76","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.76 ppm"},{"value":1.01,"low":0.03,"high":1.01,"kind":"range","display":"0.03–1.01","units":"mg/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"0.03 - 1.01 ppm"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"mg/L","statisticType":"reported_level","samplingContext":"plant:Number of Homes with High Levels","rawVerbatim":"0 out of 50"}]},{"analyteId":"lead","name":"Lead","family":"metal","familyLabel":"Metals","casrn":null,"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":0.007,"low":null,"high":null,"kind":"point","display":"0.007","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"lead 90th-percentile 0.007 mg/L (EPA SDWIS LCR, 1 round(s), 2025)"},"federalStandard":{"type":"AL","value":0.015,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.007,"low":null,"high":null,"kind":"point","display":"0.007","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"lead 90th-percentile 0.007 mg/L (EPA SDWIS LCR, 1 round(s), 2025)"}]},{"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":10.8,"low":null,"high":null,"kind":"point","display":"10.8","units":"ug/L","statisticType":"max","samplingContext":"plant:Average Result or Highest Single Test Result","censored":false,"detectionLimit":null,"rawVerbatim":"10.8 ppb"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":10.8,"low":null,"high":null,"kind":"point","display":"10.8","units":"ug/L","statisticType":"max","samplingContext":"plant:Average Result or Highest Single Test Result","rawVerbatim":"10.8 ppb"},{"value":10.8,"low":0,"high":10.8,"kind":"range","display":"0–10.8","units":"ug/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"0.00 - 10.80 ppb"}]},{"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":8.77,"low":null,"high":null,"kind":"point","display":"8.77","units":"mg/L","statisticType":"max","samplingContext":"plant:Average Result or Highest Single Test Result","censored":false,"detectionLimit":null,"rawVerbatim":"8.77 ppm"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":8.77,"low":null,"high":null,"kind":"point","display":"8.77","units":"mg/L","statisticType":"max","samplingContext":"plant:Average Result or Highest Single Test Result","rawVerbatim":"8.77 ppm"},{"value":8.77,"low":2.25,"high":8.77,"kind":"range","display":"2.25–8.77","units":"mg/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"2.25 - 8.77 ppm"}]},{"analyteId":"heptachlor_epoxide","name":"Heptachlor Epoxide","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":0.02,"low":null,"high":null,"kind":"point","display":"0.02","units":"ug/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","censored":false,"detectionLimit":null,"rawVerbatim":"0.02 ug/L"},"federalStandard":{"type":"MCLG","value":0,"units":"ug/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.02,"low":null,"high":null,"kind":"point","display":"0.02","units":"ug/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","rawVerbatim":"0.02 ug/L"}]},{"analyteId":"pfba","name":"PFBA","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"375-22-4","whatItIs":"Perfluorobutanoic acid, a shorter-chain PFAS 'forever chemical.'","whyItMatters":"Monitored under EPA rules; persistent in the environment and the human body.","measured":{"value":3.4,"low":null,"high":null,"kind":"point","display":"3.4","units":"ng/L","statisticType":"max","samplingContext":"plant:Average Result or Highest Single Test Result","censored":false,"detectionLimit":null,"rawVerbatim":"3.4 ppt"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":3.4,"low":null,"high":null,"kind":"point","display":"3.4","units":"ng/L","statisticType":"max","samplingContext":"plant:Average Result or Highest Single Test Result","rawVerbatim":"3.4 ppt"},{"value":3.4,"low":0,"high":3.4,"kind":"range","display":"0–3.4","units":"ng/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"0.00 - 3.40 ppt"}]},{"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":0.97,"low":0,"high":0.97,"kind":"range","display":"0–0.97","units":"ng/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","censored":false,"detectionLimit":null,"rawVerbatim":"0 - 0.97 ppt"},"federalStandard":{"type":"MCLG","value":0,"units":"ng/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.8,"low":null,"high":null,"kind":"point","display":"0.8","units":"ng/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","rawVerbatim":"0.8 ppt"},{"value":0.97,"low":0,"high":0.97,"kind":"range","display":"0–0.97","units":"ng/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"0 - 0.97 ppt"}]},{"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":4.9,"low":null,"high":null,"kind":"point","display":"4.9","units":"pCi/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","censored":false,"detectionLimit":null,"rawVerbatim":"4.9 pCi/l"},"federalStandard":{"type":"MCLG","value":0,"units":"pCi/L","enforceable":false},"status":{"key":"approaching","label":"Approaching the limit"},"breakdowns":[],"measurements":[{"value":4.9,"low":null,"high":null,"kind":"point","display":"4.9","units":"pCi/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","rawVerbatim":"4.9 pCi/l"},{"value":4.9,"low":0,"high":4.9,"kind":"range","display":"0–4.9","units":"pCi/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"0.0 - 4.9 pCi/l"}]},{"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":14,"low":null,"high":null,"kind":"point","display":"14","units":"pCi/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","censored":false,"detectionLimit":null,"rawVerbatim":"14 pCi/l"},"federalStandard":{"type":"MCLG","value":0,"units":"pCi/L","enforceable":false},"status":{"key":"approaching","label":"Approaching the limit"},"breakdowns":[],"measurements":[{"value":14,"low":null,"high":null,"kind":"point","display":"14","units":"pCi/L","statisticType":"max","samplingContext":"plant:Average or Highest Single Test Result","rawVerbatim":"14 pCi/l"},{"value":14,"low":4.3,"high":14,"kind":"range","display":"4.3–14","units":"pCi/L","statisticType":"range","samplingContext":"plant:of Detected Test Results","rawVerbatim":"4.3 - 14.0 pCi/l"}]}]}}