{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-07-26T08:24:49.100Z"},"system":{"slug":"ca__rowland-water-district__CA1910194","name":"Rowland Water District — Rowland Heights, Ca","state":"CA","year":2023,"url":"https://www.thewatermap.com/water/ca/rowland-water-district-rowland-heights-ca/2023","apiUrl":"https://www.thewatermap.com/api/water/ca/rowland-water-district-rowland-heights-ca/2023","markdownUrl":"https://www.thewatermap.com/water/ca/rowland-water-district-rowland-heights-ca/2023/llms.txt","coordinates":{"latitude":34.0018404,"longitude":-117.9305501},"contaminantsMeasured":48,"contaminantsWithFederalLimit":16,"contaminantsAtOrAboveLimit":1,"contaminantsApproachingLimit":3,"source":{"type":"Consumer Confidence Report (CCR)","description":"Figures are transcribed from the water utility's own annual Consumer Confidence 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