{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-06-04T01:45:34.890Z"},"system":{"slug":"ca__city-of-sacramento-main__CA3410020","name":"City of Sacramento Main — Sacramento, Ca","state":"CA","year":2023,"url":"https://www.thewatermap.com/water/ca/sacramento-main-sacramento-ca/2023","apiUrl":"https://www.thewatermap.com/api/water/ca/sacramento-main-sacramento-ca/2023","markdownUrl":"https://www.thewatermap.com/water/ca/sacramento-main-sacramento-ca/2023/llms.txt","coordinates":{"latitude":38.5816,"longitude":-121.4944},"contaminantsMeasured":16,"contaminantsWithFederalLimit":8,"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; 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