According to the Environmental Protection Agency, there are three types of Safe Drinking Water Act violations: health-based, monitoring and reporting, and other violations, which include failure to to issue consumer confidence reports or conduct periodic sanitary surveys.
Using EPA data, Visual Capitalist mapped the number of water violations recorded in each US state as of 2023.
Pennsylvania had by far the most water violations in the country, with 24,525, followed by Texas (15,340). Third-placed West Virginia had far fewer total, at 7,473.
The lowest number of water violations were found in Hawaii, where just two were reported in 2023. Delaware (117) had the second-fewest.
Note: violations are assigned to the public water systems within each state, of which there are often thousands. You can explore the data and methodology in more detail here.
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Via Visual Capitalist.