Water Violations Dashboard
EPA health-based violations across all US states and cities. Last 5 years of data from the Safe Drinking Water Information System (SDWIS).
States
51
Cities Affected
6,619
Total Violations
134,133
States with Violations
51
Browse by State
All 51 states ranked by total EPA violations. See each state's worst-performing cities.
1.Texas27,615
2.Oklahoma20,497
3.Louisiana14,184
4.Colorado5,705
5.New Mexico5,353
Browse by City
6,619 US cities ranked by EPA violations. Find the most contaminated cities for tap water.
1.DES PERES, Texas1757
2.LUBBOCK, Texas931
3.AUSTIN, Texas806
4.BRADY, Texas712
5.HOUSTON, Texas689
Quick State Views
EPA Water Quality Data
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Search any US city, state, or ZIP code to see its EPA water quality violations, contaminants, and safety grade.
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