California Natural Flows Database

data californiaThe PFAS in Drinking Water Maps (PFAS Maps) are an interactive series of maps for exploring both the US EPA Unregulated Contaminant Monitoring Rule (UCMR) 3 (2013-2015) DataCalifornia Health Center Program Uniform Data System (UDS) Data. Total Number of Reporting Program Awardees: 172. Reporting Period: 2025.