{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-05-26T08:01:09.192Z"},"system":{"slug":"ca_sdwis_edt__CA0710004__2023","name":"Brentwood","state":"CA","year":2023,"url":"https://www.thewatermap.com/water/ca/brentwood/2023","apiUrl":"https://www.thewatermap.com/api/water/ca/brentwood/2023","markdownUrl":"https://www.thewatermap.com/water/ca/brentwood/2023/llms.txt","coordinates":{"latitude":37.9317766,"longitude":-121.696026},"contaminantsMeasured":99,"contaminantsWithFederalLimit":76,"contaminantsAtOrAboveLimit":0,"contaminantsApproachingLimit":2,"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 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