Drinking Water Systems in WISTER, Oklahoma
4 water systems are reported for this city, with a combined service population of 5,057. The systems have 104 EPA violation records in the five-year period ending June 30, 2026.
Water Systems Serving WISTER
EPA Contaminant Categories in Historical Violation Records
Total Trihalomethanes (TTHMs)79 records
Public Notice31 records
Haloacetic Acids (HAA5)25 records
Coliform (TCR)14 records
Chlorine12 records
Revised Total Coliform Rule10 records
Lead and Copper Rule7 records
Consumer Confidence Rule6 records
LEAD AND COPPER RULE REVISIONS4 records
Surface Water Treatment Rule2 records
Category counts aggregate historical compliance records across listed systems. They do not show current concentrations or household test results.