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Selected Location: Delaware
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Public Water Quality Data

Latest date with data
Expected update frequency
Every year
Locations available for download
Delaware, County, City, Zip Code, State Senate District, State House District, Census Tract, Neighborhood, Census Block Group
Drinking water quality metrics for various water contaminants (analytes)
Safe Drinking Water Information System (SDWIS) Federal Reporting Services. https://www.epa.gov/ground-water-and-drinking-water/safe-drinking-water-information-system-sdwis-federal-reporting
Public water sources and the populations they serve are identified as points in this dataset; private well populations are derived as total_population - public_water_population
Data Download (.csv)

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Data Source
United States Environmental Protection Agency
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