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US Estimated Private Domestic Wells Map Service

Published by U.S. EPA Office of Research & Development (ORD) - National Exposure Research Laboratory (NERL) | U.S. Environmental Protection Agency | Catalog Last Checked: May 06, 2026 at 12:49 AM | Dataset Last Updated: May 08, 2018 at 12:00 AM
Private domestic well use estimates for US Census block groups were calculated using a combination of population and housing unit data from the 1990, 2000 and 2010 Decennial Censuses in conjunction with available state level domestic well completion reports for domestic wells constructed between April 1, 1990 and March 31, 2010. A detailed description of how this data was created can be found in Weaver et. al (2017).

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