{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-05-26T09:01:47.976Z"},"system":{"slug":"ca_sdwis_edt__CA0710006__2026","name":"City of Martinez","state":"CA","year":2026,"url":"https://www.thewatermap.com/water/ca/martinez/2026","apiUrl":"https://www.thewatermap.com/api/water/ca/martinez/2026","markdownUrl":"https://www.thewatermap.com/water/ca/martinez/2026/llms.txt","coordinates":{"latitude":38.0138934,"longitude":-122.1338674},"contaminantsMeasured":45,"contaminantsWithFederalLimit":29,"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 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