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Federal
United States Estimated Water Sources - 2020 Census Blocks
U.S. Environmental Protection Agency —
This dataset contains the results of EPAs estimates for domestic water supply in The United States for 2020 census blocks. The file is a comma-delimited text file,... -
Federal
Community Water System and Contributing Area Characteristics
U.S. Environmental Protection Agency —
Operational, financial, and land use data to estimate drinking water treatment cost functions for 2006 calendar year. Data are organized for surface water and... -
State
Surface Water Drinking Water Source Areas
State of Oregon —
This data layer is an element of the Oregon GIS Framework. This map includes Oregon Department of Environmental Quality (DEQ) and Oregon Department of Human Services’...