is a Data Source.
The Safe Drinking Water Information System (SDWIS) is the US Environmental Protection Agency's national database of public water system information collected under the Safe Drinking Water Act. It records public water systems, their sampling points, monitoring results, and violations, including per- and polyfluoroalkyl substance (PFAS) sampling reported by states and EPA. SDWIS PFAS results are distributed through the EPA PFAS Analytic Tools and SDWIS Federal Reports interfaces. SAWGraph uses SDWIS drinking water PFAS data as a primary source for PFAS occurrence in public water systems.
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| ID | Name | URL | Category | Format | Description |
|---|---|---|---|---|---|
| epa-sdwis.landing | EPA SDWIS federal reporting landing page | safe-drinking-water-information-system-sdwis-federal-reporting | GraphicalInterface | http | EPA overview page describing SDWIS fe... |
| epa-sdwis.reports | SDWIS Federal Reports Search | 200 | GraphicalInterface | http | The SDWIS Federal Reports Search inte... |
| ID | Name | URL | Category | Format | Relation | Description |
|---|---|---|---|---|---|---|
| sawgraph.graph | SAWGraph PFAS Knowledge Graph | pfas-kg | GraphProduct | ttl | had primary source | The SAWGraph PFAS knowledge graph, in... |
| geoconnex.graph | GEOCONNEX Knowledge Graph | geoconnex.us | GraphProduct | ttl | was influenced by | The Geoconnex knowledge graph, an ope... |
The Safe Drinking Water Information System (SDWIS) is the US Environmental Protection Agency’s national database of public water system information collected under the Safe Drinking Water Act. It records public water systems, their sampling points, monitoring results, and violations, including per- and polyfluoroalkyl substance (PFAS) sampling.
SAWGraph uses SDWIS drinking water PFAS data, obtained through the EPA PFAS Analytic Tools, as a primary source for PFAS occurrence in public water systems.
Created: July 01, 2026 | Last modified: July 01, 2026