California Division of Drinking Water PFAS Data
California State Water Resources Control Board PFAS monitoring data for public water systems, including PFOA, PFOS, PFHxS, and other analytes. Data accessible via SDWIS and the GeoTracker GAMA Groundwater Information System.
waterboards.ca.gov
At a glance
- Region
- United States (North America)
- Coverage
- California State
- Access
- Free
- Category
- Government
What's inside
- PFAS
- Drinking Water Quality
- Groundwater Quality
What you can do with it
Typical work that data of this type supports.
- 01
Hotspots and trends
Find where contamination is high and whether it is getting worse.
Because it has: Drinking Water Quality
- 02
Compliance checks
Compare samples against drinking water and discharge standards.
- 03
Trend hotspots
Find where water tables are falling year after year.
Because it has: Groundwater Quality
Where AI adds value
Ideas for machine learning and AI agents built on this kind of data.
- 01
Risk maps
Predict contamination where no samples exist, from geology, land use and climate.
- 02
Anomaly alerts
Catch sudden spikes in sensor or lab data automatically.
- 03
Gap filling
Rebuild missing well readings from neighbours, rainfall and season.
Related water data
- EWG Tap Water Database (2025 Edition)North America | Free
- Michigan PFAS Action Response Team (MPART) DataNorth America | Free
- Minnesota Department of Health PFAS DashboardNorth America | Free
- USGS PFAS in U.S. Tapwater StudyNorth America | Free
- EPA UCMR 5 PFAS Drinking Water DataNorth America | Free
- USGS Arsenic Concentrations in Groundwater of the United StatesNorth America | Free
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