{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-06-04T00:40:32.514Z"},"system":{"slug":"ca__city-of-santa-maria-utilities-department__CA4210011","name":"City of Santa Maria Utilities Department — Santa Maria, Ca","state":"CA","year":2023,"url":"https://www.thewatermap.com/water/ca/santa-maria-utilities-department-santa-maria-ca/2023","apiUrl":"https://www.thewatermap.com/api/water/ca/santa-maria-utilities-department-santa-maria-ca/2023","markdownUrl":"https://www.thewatermap.com/water/ca/santa-maria-utilities-department-santa-maria-ca/2023/llms.txt","coordinates":{"latitude":34.9531295,"longitude":-120.435857},"contaminantsMeasured":20,"contaminantsWithFederalLimit":8,"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":1.2,"low":0.86,"high":1.2,"kind":"range","display":"0.86–1.2","units":"mg/L","statisticType":"range","samplingContext":"plant:PURCHASED STATE PROJECT WATER","censored":false,"detectionLimit":null,"rawVerbatim":"Average = 0.86 (Range = 0.60 - 1.2)"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1.2,"low":0.86,"high":1.2,"kind":"range","display":"0.86–1.2","units":"mg/L","statisticType":"range","samplingContext":"plant:PURCHASED STATE PROJECT WATER","rawVerbatim":"Average = 0.86 (Range = 0.60 - 1.2)"}]},{"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":3.8,"low":2.1,"high":3.8,"kind":"range","display":"2.1–3.8","units":"mg/L","statisticType":"range","samplingContext":"plant:PURCHASED STATE PROJECT WATER","censored":false,"detectionLimit":null,"rawVerbatim":"Average = 2.1 (Range = 0.40 - 3.8)"},"federalStandard":{"type":"MCL","value":10,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":3.8,"low":2.1,"high":3.8,"kind":"range","display":"2.1–3.8","units":"mg/L","statisticType":"range","samplingContext":"plant:PURCHASED STATE PROJECT WATER","rawVerbatim":"Average = 2.1 (Range = 0.40 - 3.8)"}]}]},{"family":"metal","familyLabel":"Metals","contaminants":[{"analyteId":"aluminum","name":"Aluminum","family":"metal","familyLabel":"Metals","casrn":"7429-90-5","whatItIs":"A common element sometimes used as a treatment coagulant.","whyItMatters":"Regulated only as a secondary (cosmetic) standard; 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