{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-07-26T07:29:23.099Z"},"system":{"slug":"ca__san-miguelito-mwc__CA4010003","name":"San Miguelito Mwc — Avila Beach, Ca","state":"CA","year":2023,"url":"https://www.thewatermap.com/water/ca/san-miguelito-mwc-avila-beach-ca/2023","apiUrl":"https://www.thewatermap.com/api/water/ca/san-miguelito-mwc-avila-beach-ca/2023","markdownUrl":"https://www.thewatermap.com/water/ca/san-miguelito-mwc-avila-beach-ca/2023/llms.txt","coordinates":{"latitude":35.1799752,"longitude":-120.731841},"contaminantsMeasured":6,"contaminantsWithFederalLimit":4,"contaminantsAtOrAboveLimit":1,"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":"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":40,"low":0,"high":40,"kind":"range","display":"0–40","units":"mg/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0-40"},"federalStandard":{"type":"MCL","value":10,"units":"mg/L","enforceable":true},"status":{"key":"over","label":"At or above the limit"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"N/D"},{"value":40,"low":0,"high":40,"kind":"range","display":"0–40","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0-40"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"reported_level","samplingContext":"plant:Total No. of Detections","rawVerbatim":"N/D"}]}]},{"family":"metal","familyLabel":"Metals","contaminants":[{"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":1.1,"low":null,"high":null,"kind":"point","display":"1.1","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"1.1"},"federalStandard":{"type":"AL","value":1.3,"units":"mg/L","enforceable":true},"status":{"key":"approaching","label":"Approaching the limit"},"breakdowns":[],"measurements":[{"value":1.1,"low":null,"high":null,"kind":"point","display":"1.1","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"1.1"},{"value":10,"low":null,"high":null,"kind":"point","display":"10","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:No. of Samples Collected","rawVerbatim":"10"}]},{"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,"low":null,"high":null,"kind":"point","display":"0.0","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"lead 90th-percentile 0.0 mg/L (EPA SDWIS LCR, 1 round(s), 2023)"},"federalStandard":{"type":"AL","value":0.015,"units":"mg/L","enforceable":true},"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0.0","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"lead 90th-percentile 0.0 mg/L (EPA SDWIS LCR, 1 round(s), 2023)"}]}]},{"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":"reported_level","samplingContext":"plant:Total No. of Detections","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":null,"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"reported_level","samplingContext":"plant:Total No. of Detections","rawVerbatim":"0"}]},{"analyteId":"total_coliform","name":"Total Coliform","family":"microbial","familyLabel":"Microbial","casrn":null,"whatItIs":"A group of bacteria used as an indicator of overall water-system sanitation.","whyItMatters":"Coliforms themselves are usually harmless, but their presence signals that disease-causing organisms could enter the system.","measured":{"value":2024,"low":null,"high":null,"kind":"point","display":"2024","units":null,"statisticType":"max_single","samplingContext":"plant:No. of Detections","censored":false,"detectionLimit":null,"rawVerbatim":"2024 (3) 2 May/ 1July"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":2024,"low":null,"high":null,"kind":"point","display":"2024","units":null,"statisticType":"max_single","samplingContext":"plant:No. of Detections","rawVerbatim":"2024 (3) 2 May/ 1July"}]}]},{"family":"other","familyLabel":"Other","contaminants":[{"analyteId":"chlorine_total","name":"Chlorine Total","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":3.1,"low":1.26,"high":3.1,"kind":"range","display":"1.26–3.1","units":"mg/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1.26-3.10"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":2.1,"low":null,"high":null,"kind":"point","display":"2.1","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"2.10"},{"value":3.1,"low":1.26,"high":3.1,"kind":"range","display":"1.26–3.1","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"1.26-3.10"}]}]}],"contaminants":[{"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":40,"low":0,"high":40,"kind":"range","display":"0–40","units":"mg/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0-40"},"federalStandard":{"type":"MCL","value":10,"units":"mg/L","enforceable":true},"status":{"key":"over","label":"At or above the limit"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"N/D"},{"value":40,"low":0,"high":40,"kind":"range","display":"0–40","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"0-40"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"reported_level","samplingContext":"plant:Total No. of Detections","rawVerbatim":"N/D"}]},{"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":1.1,"low":null,"high":null,"kind":"point","display":"1.1","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"1.1"},"federalStandard":{"type":"AL","value":1.3,"units":"mg/L","enforceable":true},"status":{"key":"approaching","label":"Approaching the limit"},"breakdowns":[],"measurements":[{"value":1.1,"low":null,"high":null,"kind":"point","display":"1.1","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"1.1"},{"value":10,"low":null,"high":null,"kind":"point","display":"10","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:No. of Samples Collected","rawVerbatim":"10"}]},{"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,"low":null,"high":null,"kind":"point","display":"0.0","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"lead 90th-percentile 0.0 mg/L (EPA SDWIS LCR, 1 round(s), 2023)"},"federalStandard":{"type":"AL","value":0.015,"units":"mg/L","enforceable":true},"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0.0","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"lead 90th-percentile 0.0 mg/L (EPA SDWIS LCR, 1 round(s), 2023)"}]},{"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":"reported_level","samplingContext":"plant:Total No. of Detections","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":null,"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"reported_level","samplingContext":"plant:Total No. of Detections","rawVerbatim":"0"}]},{"analyteId":"total_coliform","name":"Total Coliform","family":"microbial","familyLabel":"Microbial","casrn":null,"whatItIs":"A group of bacteria used as an indicator of overall water-system sanitation.","whyItMatters":"Coliforms themselves are usually harmless, but their presence signals that disease-causing organisms could enter the system.","measured":{"value":2024,"low":null,"high":null,"kind":"point","display":"2024","units":null,"statisticType":"max_single","samplingContext":"plant:No. of Detections","censored":false,"detectionLimit":null,"rawVerbatim":"2024 (3) 2 May/ 1July"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":2024,"low":null,"high":null,"kind":"point","display":"2024","units":null,"statisticType":"max_single","samplingContext":"plant:No. of Detections","rawVerbatim":"2024 (3) 2 May/ 1July"}]},{"analyteId":"chlorine_total","name":"Chlorine Total","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":3.1,"low":1.26,"high":3.1,"kind":"range","display":"1.26–3.1","units":"mg/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1.26-3.10"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":2.1,"low":null,"high":null,"kind":"point","display":"2.1","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"2.10"},{"value":3.1,"low":1.26,"high":3.1,"kind":"range","display":"1.26–3.1","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"1.26-3.10"}]}]}}