{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-06-04T00:40:12.460Z"},"system":{"slug":"ca__green-valley-cwd__CA1910244","name":"Green Valley Cwd — Green Valley, Ca","state":"CA","year":2021,"url":"https://www.thewatermap.com/water/ca/green-valley-cwd-green-valley-ca/2021","apiUrl":"https://www.thewatermap.com/api/water/ca/green-valley-cwd-green-valley-ca/2021","markdownUrl":"https://www.thewatermap.com/water/ca/green-valley-cwd-green-valley-ca/2021/llms.txt","coordinates":{"latitude":34.6163079,"longitude":-118.4034763},"contaminantsMeasured":13,"contaminantsWithFederalLimit":6,"contaminantsAtOrAboveLimit":0,"contaminantsApproachingLimit":0,"source":{"type":"Consumer Confidence Report (CCR)","description":"Figures are transcribed from the water utility's own annual Consumer Confidence Report, cross-checked by a second model, and approved by a person before publishing."},"families":[{"family":"disinfectant","familyLabel":"Disinfectants","contaminants":[{"analyteId":"chlorine","name":"Chlorine","family":"disinfectant","familyLabel":"Disinfectants","casrn":null,"whatItIs":"A disinfectant added to drinking water to kill bacteria and viruses.","whyItMatters":"Effective and necessary, but high residual levels can cause taste and odor issues; the EPA caps the residual disinfectant level.","measured":{"value":0.72,"low":null,"high":null,"kind":"point","display":"0.72","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.72"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.72,"low":null,"high":null,"kind":"point","display":"0.72","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.72"},{"value":1.02,"low":0.4,"high":1.02,"kind":"range","display":"0.4–1.02","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.40-1.02"}]}]},{"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,"low":null,"high":null,"kind":"point","display":"5","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"5"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":7,"low":3,"high":7,"kind":"range","display":"3–7","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"3-7"},{"value":5,"low":null,"high":null,"kind":"point","display":"5","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"5"}]}]},{"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":0.6,"low":null,"high":null,"kind":"point","display":"0.6","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.6"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.6,"low":null,"high":null,"kind":"point","display":"0.6","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.6"},{"value":0.7,"low":0.5,"high":0.7,"kind":"range","display":"0.5–0.7","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.5-0.7"}]},{"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":5.03,"low":null,"high":null,"kind":"point","display":"5.03","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"5.03"},"federalStandard":{"type":"MCL","value":10,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":5.03,"low":null,"high":null,"kind":"point","display":"5.03","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"5.03"},{"value":7.9,"low":3.2,"high":7.9,"kind":"range","display":"3.2–7.9","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"3.2-7.9"}]}]},{"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":16.6,"low":null,"high":null,"kind":"point","display":"16.6","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"16.6"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":16.6,"low":null,"high":null,"kind":"point","display":"16.6","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"16.6"},{"value":116,"low":0,"high":116,"kind":"range","display":"0–116","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0-116"}]},{"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":230,"low":null,"high":null,"kind":"point","display":"230","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"230"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":10,"low":null,"high":null,"kind":"point","display":"10","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:No. of samples collected","rawVerbatim":"10"},{"value":230,"low":null,"high":null,"kind":"point","display":"230","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"230"}]},{"analyteId":"lead","name":"Lead","family":"metal","familyLabel":"Metals","casrn":"7439-92-1","whatItIs":"A toxic metal that leaches into water from old service lines, solder, and plumbing fixtures.","whyItMatters":"There is no safe level of lead; it harms brain development in children and raises blood pressure in adults. The EPA sets an action level, not a health goal above zero.","measured":{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":10,"low":null,"high":null,"kind":"point","display":"10","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:No. of samples collected","rawVerbatim":"10"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"ND"}]},{"analyteId":"vanadium","name":"Vanadium","family":"metal","familyLabel":"Metals","casrn":"7440-62-2","whatItIs":null,"whyItMatters":null,"measured":{"value":5.75,"low":null,"high":null,"kind":"point","display":"5.75","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"5.75"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":5.75,"low":null,"high":null,"kind":"point","display":"5.75","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"5.75"},{"value":3,"low":3,"high":3,"kind":"range","display":"3–3","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"3.0 - 3.0"}]}]},{"family":"microbial","familyLabel":"Microbial","contaminants":[{"analyteId":"total_coliform","name":"Total Coliform","family":"microbial","familyLabel":"Microbial","casrn":null,"whatItIs":"A group of bacteria used as an indicator of overall water-system sanitation.","whyItMatters":"Coliforms themselves are usually harmless, but their presence signals that disease-causing organisms could enter the system.","measured":{"value":3,"low":null,"high":null,"kind":"point","display":"3","units":null,"statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"3"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0"},{"value":3,"low":null,"high":null,"kind":"point","display":"3","units":null,"statisticType":"reported_level","samplingContext":"system","rawVerbatim":"3"}]}]},{"family":"other","familyLabel":"Other","contaminants":[{"analyteId":"chromium","name":"Chromium","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":16,"low":null,"high":null,"kind":"point","display":"16","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"16"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":16,"low":null,"high":null,"kind":"point","display":"16","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"16"},{"value":24,"low":10,"high":24,"kind":"range","display":"10–24","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"10-24"}]}]},{"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":0.19,"low":null,"high":null,"kind":"point","display":"0.19","units":"pCi/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.19"},"federalStandard":{"type":"MCL","value":5,"units":"pCi/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.483,"low":0,"high":0.483,"kind":"range","display":"0–0.483","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.0-0.483"},{"value":0.19,"low":null,"high":null,"kind":"point","display":"0.19","units":"pCi/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.19"}]},{"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":1.73,"low":null,"high":null,"kind":"point","display":"1.73","units":"pCi/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1.73"},"federalStandard":{"type":"MCL","value":15,"units":"pCi/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1.73,"low":null,"high":null,"kind":"point","display":"1.73","units":"pCi/L","statisticType":"average","samplingContext":"system","rawVerbatim":"1.73"},{"value":2.71,"low":0.94,"high":2.71,"kind":"range","display":"0.94–2.71","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.94-2.71"}]},{"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":0.71,"low":null,"high":null,"kind":"point","display":"0.71","units":"pCi/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.71"},"federalStandard":{"type":"MCL","value":20,"units":"pCi/L","enforceable":true},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.71,"low":null,"high":null,"kind":"point","display":"0.71","units":"pCi/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.71"},{"value":1.45,"low":0.446,"high":1.45,"kind":"range","display":"0.446–1.45","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.446-1.450"}]}]}],"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":0.72,"low":null,"high":null,"kind":"point","display":"0.72","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.72"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.72,"low":null,"high":null,"kind":"point","display":"0.72","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.72"},{"value":1.02,"low":0.4,"high":1.02,"kind":"range","display":"0.4–1.02","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.40-1.02"}]},{"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,"low":null,"high":null,"kind":"point","display":"5","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"5"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":7,"low":3,"high":7,"kind":"range","display":"3–7","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"3-7"},{"value":5,"low":null,"high":null,"kind":"point","display":"5","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"5"}]},{"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":0.6,"low":null,"high":null,"kind":"point","display":"0.6","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.6"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.6,"low":null,"high":null,"kind":"point","display":"0.6","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.6"},{"value":0.7,"low":0.5,"high":0.7,"kind":"range","display":"0.5–0.7","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.5-0.7"}]},{"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":5.03,"low":null,"high":null,"kind":"point","display":"5.03","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"5.03"},"federalStandard":{"type":"MCL","value":10,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":5.03,"low":null,"high":null,"kind":"point","display":"5.03","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"5.03"},{"value":7.9,"low":3.2,"high":7.9,"kind":"range","display":"3.2–7.9","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"3.2-7.9"}]},{"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":16.6,"low":null,"high":null,"kind":"point","display":"16.6","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"16.6"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":16.6,"low":null,"high":null,"kind":"point","display":"16.6","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"16.6"},{"value":116,"low":0,"high":116,"kind":"range","display":"0–116","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0-116"}]},{"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":230,"low":null,"high":null,"kind":"point","display":"230","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"230"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":10,"low":null,"high":null,"kind":"point","display":"10","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:No. of samples collected","rawVerbatim":"10"},{"value":230,"low":null,"high":null,"kind":"point","display":"230","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"230"}]},{"analyteId":"lead","name":"Lead","family":"metal","familyLabel":"Metals","casrn":"7439-92-1","whatItIs":"A toxic metal that leaches into water from old service lines, solder, and plumbing fixtures.","whyItMatters":"There is no safe level of lead; it harms brain development in children and raises blood pressure in adults. The EPA sets an action level, not a health goal above zero.","measured":{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":10,"low":null,"high":null,"kind":"point","display":"10","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:No. of samples collected","rawVerbatim":"10"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"ND"}]},{"analyteId":"vanadium","name":"Vanadium","family":"metal","familyLabel":"Metals","casrn":"7440-62-2","whatItIs":null,"whyItMatters":null,"measured":{"value":5.75,"low":null,"high":null,"kind":"point","display":"5.75","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"5.75"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":5.75,"low":null,"high":null,"kind":"point","display":"5.75","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"5.75"},{"value":3,"low":3,"high":3,"kind":"range","display":"3–3","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"3.0 - 3.0"}]},{"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":3,"low":null,"high":null,"kind":"point","display":"3","units":null,"statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"3"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0"},{"value":3,"low":null,"high":null,"kind":"point","display":"3","units":null,"statisticType":"reported_level","samplingContext":"system","rawVerbatim":"3"}]},{"analyteId":"chromium","name":"Chromium","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":16,"low":null,"high":null,"kind":"point","display":"16","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"16"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":16,"low":null,"high":null,"kind":"point","display":"16","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"16"},{"value":24,"low":10,"high":24,"kind":"range","display":"10–24","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"10-24"}]},{"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":0.19,"low":null,"high":null,"kind":"point","display":"0.19","units":"pCi/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.19"},"federalStandard":{"type":"MCL","value":5,"units":"pCi/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.483,"low":0,"high":0.483,"kind":"range","display":"0–0.483","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.0-0.483"},{"value":0.19,"low":null,"high":null,"kind":"point","display":"0.19","units":"pCi/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.19"}]},{"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":1.73,"low":null,"high":null,"kind":"point","display":"1.73","units":"pCi/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1.73"},"federalStandard":{"type":"MCL","value":15,"units":"pCi/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1.73,"low":null,"high":null,"kind":"point","display":"1.73","units":"pCi/L","statisticType":"average","samplingContext":"system","rawVerbatim":"1.73"},{"value":2.71,"low":0.94,"high":2.71,"kind":"range","display":"0.94–2.71","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.94-2.71"}]},{"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":0.71,"low":null,"high":null,"kind":"point","display":"0.71","units":"pCi/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.71"},"federalStandard":{"type":"MCL","value":20,"units":"pCi/L","enforceable":true},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.71,"low":null,"high":null,"kind":"point","display":"0.71","units":"pCi/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.71"},{"value":1.45,"low":0.446,"high":1.45,"kind":"range","display":"0.446–1.45","units":"pCi/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.446-1.450"}]}]}}