Drinking Water Systems in COLUMBIA CITY, Oregon
1 water system are reported for this city, with a combined service population of 1,995. The systems have 4 EPA violation records in the five-year period ending June 30, 2026.
Water Systems Serving COLUMBIA CITY
EPA Contaminant Categories in Historical Violation Records
Groundwater Rule6 records
Lead and Copper Rule5 records
Total Trihalomethanes (TTHMs)5 records
Consumer Confidence Rule4 records
Haloacetic Acids (HAA5)4 records
Nitrate3 records
Toluene2 records
Surface Water Treatment Rule1 record
Tetrachloroethylene (PCE)1 record
1,1-Dichloroethylene1 record
Category counts aggregate historical compliance records across listed systems. They do not show current concentrations or household test results.