{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-06-04T01:55:22.762Z"},"system":{"slug":"ca__california-city-city-of__CA1510032","name":"California City, City of — California City, Ca","state":"CA","year":2023,"url":"https://www.thewatermap.com/water/ca/california-city-california-city-ca/2023","apiUrl":"https://www.thewatermap.com/api/water/ca/california-city-california-city-ca/2023","markdownUrl":"https://www.thewatermap.com/water/ca/california-city-california-city-ca/2023/llms.txt","coordinates":{"latitude":35.1259261,"longitude":-117.959868},"contaminantsMeasured":9,"contaminantsWithFederalLimit":6,"contaminantsAtOrAboveLimit":0,"contaminantsApproachingLimit":1,"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":"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":1.57,"low":1.29,"high":1.57,"kind":"range","display":"1.29–1.57","units":"mg/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1.29 - 1.57"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1.57,"low":1.29,"high":1.57,"kind":"range","display":"1.29–1.57","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"1.29 - 1.57"},{"value":1.4,"low":null,"high":null,"kind":"point","display":"1.4","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"1.4"}]},{"analyteId":"nitrate","name":"Nitrate","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"14797-55-8","whatItIs":"A compound from fertilizer runoff, septic systems, and erosion of natural deposits.","whyItMatters":"Levels above the federal limit can cause 'blue baby syndrome,' a serious oxygen-transport condition in infants.","measured":{"value":1.26,"low":0.28,"high":1.26,"kind":"range","display":"0.28–1.26","units":"mg/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.28-1.26"},"federalStandard":{"type":"MCL","value":10,"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":"reported_level","samplingContext":"system","rawVerbatim":"0.6"},{"value":1.26,"low":0.28,"high":1.26,"kind":"range","display":"0.28–1.26","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.28-1.26"}]}]},{"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":9,"low":6,"high":9,"kind":"range","display":"6–9","units":"ug/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"6 - 9"},"federalStandard":null,"status":{"key":"approaching","label":"Approaching the limit"},"breakdowns":[],"measurements":[{"value":7,"low":null,"high":null,"kind":"point","display":"7","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"7"},{"value":9,"low":6,"high":9,"kind":"range","display":"6–9","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"6 - 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":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"range","samplingContext":"system","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":{"type":"MCL","value":2,"units":"mg/L","enforceable":true},"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"ND"}]},{"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":0.0883,"low":null,"high":null,"kind":"point","display":"0.0883","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0.0883"},"federalStandard":{"type":"AL","value":1.3,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.26,"low":0.05,"high":0.26,"kind":"range","display":"0.05–0.26","units":"mg/L","statisticType":"range","samplingContext":"at_the_tap","rawVerbatim":"0.05-0.26"},{"value":0.0883,"low":null,"high":null,"kind":"point","display":"0.0883","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.0883"}]},{"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":0.2,"low":null,"high":null,"kind":"point","display":"0.2","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0.2"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":20,"low":null,"high":null,"kind":"point","display":"20","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:No. of Samples","rawVerbatim":"20"},{"value":4,"low":0,"high":4,"kind":"range","display":"0–4","units":"ug/L","statisticType":"range","samplingContext":"at_the_tap","rawVerbatim":"0-4"},{"value":0.2,"low":null,"high":null,"kind":"point","display":"0.2","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.2"}]},{"analyteId":"selenium","name":"Selenium","family":"metal","familyLabel":"Metals","casrn":"7782-49-2","whatItIs":"A trace element from natural deposits and industrial discharge.","whyItMatters":"Essential in tiny amounts, but long-term exposure above the federal limit can cause hair and fingernail loss and circulatory problems.","measured":{"value":12,"low":0,"high":12,"kind":"range","display":"0–12","units":"ug/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0 - 12"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":5.8,"low":null,"high":null,"kind":"point","display":"5.8","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"5.8"},{"value":12,"low":0,"high":12,"kind":"range","display":"0–12","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0 - 12"}]}]},{"family":"microbial","familyLabel":"Microbial","contaminants":[{"analyteId":"ecoli","name":"Escherichia coli (E. coli)","family":"microbial","familyLabel":"Microbial","casrn":null,"whatItIs":"Escherichia coli — bacteria found in the gut of humans and animals.","whyItMatters":"Its presence in drinking water indicates fecal contamination and a real risk of waterborne illness.","measured":{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"max_single","samplingContext":"plant:No. of Detections","censored":false,"detectionLimit":null,"rawVerbatim":"(In the year) 0"},"federalStandard":{"type":"MCLG","value":0,"units":null,"enforceable":false},"status":{"key":"none","label":"None detected"},"breakdowns":[{"context":"plant:No. of Detections","label":"No. of Detections","kind":"plant","units":"","average":null,"range":null,"ratio":null},{"context":"plant:Total No. of Detections","label":"Total No. of Detections","kind":"plant","units":"","average":null,"range":null,"ratio":null}],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"max_single","samplingContext":"plant:No. of Detections","rawVerbatim":"(In the year) 0"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"reported_level","samplingContext":"plant:Total No. of Detections","rawVerbatim":"0"}]}]},{"family":"other","familyLabel":"Other","contaminants":[{"analyteId":"chromium","name":"Chromium","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":10,"low":5.9,"high":10,"kind":"range","display":"5.9–10","units":"ug/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"5.9-10"},"federalStandard":{"type":"NL","value":50,"units":"ug/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":7.8,"low":null,"high":null,"kind":"point","display":"7.8","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"7.8"},{"value":10,"low":5.9,"high":10,"kind":"range","display":"5.9–10","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"5.9-10"}]}]}],"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":1.57,"low":1.29,"high":1.57,"kind":"range","display":"1.29–1.57","units":"mg/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1.29 - 1.57"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1.57,"low":1.29,"high":1.57,"kind":"range","display":"1.29–1.57","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"1.29 - 1.57"},{"value":1.4,"low":null,"high":null,"kind":"point","display":"1.4","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"1.4"}]},{"analyteId":"nitrate","name":"Nitrate","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"14797-55-8","whatItIs":"A compound from fertilizer runoff, septic systems, and erosion of natural deposits.","whyItMatters":"Levels above the federal limit can cause 'blue baby syndrome,' a serious oxygen-transport condition in infants.","measured":{"value":1.26,"low":0.28,"high":1.26,"kind":"range","display":"0.28–1.26","units":"mg/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.28-1.26"},"federalStandard":{"type":"MCL","value":10,"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":"reported_level","samplingContext":"system","rawVerbatim":"0.6"},{"value":1.26,"low":0.28,"high":1.26,"kind":"range","display":"0.28–1.26","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0.28-1.26"}]},{"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":9,"low":6,"high":9,"kind":"range","display":"6–9","units":"ug/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"6 - 9"},"federalStandard":null,"status":{"key":"approaching","label":"Approaching the limit"},"breakdowns":[],"measurements":[{"value":7,"low":null,"high":null,"kind":"point","display":"7","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"7"},{"value":9,"low":6,"high":9,"kind":"range","display":"6–9","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"6 - 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":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"range","samplingContext":"system","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":{"type":"MCL","value":2,"units":"mg/L","enforceable":true},"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"ND"}]},{"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":0.0883,"low":null,"high":null,"kind":"point","display":"0.0883","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0.0883"},"federalStandard":{"type":"AL","value":1.3,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.26,"low":0.05,"high":0.26,"kind":"range","display":"0.05–0.26","units":"mg/L","statisticType":"range","samplingContext":"at_the_tap","rawVerbatim":"0.05-0.26"},{"value":0.0883,"low":null,"high":null,"kind":"point","display":"0.0883","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.0883"}]},{"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":0.2,"low":null,"high":null,"kind":"point","display":"0.2","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0.2"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":20,"low":null,"high":null,"kind":"point","display":"20","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:No. of Samples","rawVerbatim":"20"},{"value":4,"low":0,"high":4,"kind":"range","display":"0–4","units":"ug/L","statisticType":"range","samplingContext":"at_the_tap","rawVerbatim":"0-4"},{"value":0.2,"low":null,"high":null,"kind":"point","display":"0.2","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.2"}]},{"analyteId":"selenium","name":"Selenium","family":"metal","familyLabel":"Metals","casrn":"7782-49-2","whatItIs":"A trace element from natural deposits and industrial discharge.","whyItMatters":"Essential in tiny amounts, but long-term exposure above the federal limit can cause hair and fingernail loss and circulatory problems.","measured":{"value":12,"low":0,"high":12,"kind":"range","display":"0–12","units":"ug/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0 - 12"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":5.8,"low":null,"high":null,"kind":"point","display":"5.8","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"5.8"},{"value":12,"low":0,"high":12,"kind":"range","display":"0–12","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0 - 12"}]},{"analyteId":"ecoli","name":"Escherichia coli (E. coli)","family":"microbial","familyLabel":"Microbial","casrn":null,"whatItIs":"Escherichia coli — bacteria found in the gut of humans and animals.","whyItMatters":"Its presence in drinking water indicates fecal contamination and a real risk of waterborne illness.","measured":{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"max_single","samplingContext":"plant:No. of Detections","censored":false,"detectionLimit":null,"rawVerbatim":"(In the year) 0"},"federalStandard":{"type":"MCLG","value":0,"units":null,"enforceable":false},"status":{"key":"none","label":"None detected"},"breakdowns":[{"context":"plant:No. of Detections","label":"No. of Detections","kind":"plant","units":"","average":null,"range":null,"ratio":null},{"context":"plant:Total No. of Detections","label":"Total No. of Detections","kind":"plant","units":"","average":null,"range":null,"ratio":null}],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"max_single","samplingContext":"plant:No. of Detections","rawVerbatim":"(In the year) 0"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"reported_level","samplingContext":"plant:Total No. of Detections","rawVerbatim":"0"}]},{"analyteId":"chromium","name":"Chromium","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":10,"low":5.9,"high":10,"kind":"range","display":"5.9–10","units":"ug/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"5.9-10"},"federalStandard":{"type":"NL","value":50,"units":"ug/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":7.8,"low":null,"high":null,"kind":"point","display":"7.8","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"7.8"},{"value":10,"low":5.9,"high":10,"kind":"range","display":"5.9–10","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"5.9-10"}]}]}}