Drinking Water Systems in RICHLAND, Oregon
1 water system are reported for this city, with a combined service population of 165. The systems have 26 EPA violation records in the five-year period ending June 30, 2026.
Water Systems Serving RICHLAND
EPA Contaminant Categories in Historical Violation Records
Surface Water Treatment Rule25 records
Coliform (TCR)12 records
Interim Enhanced Surface Water Treatment Rule8 records
Consumer Confidence Rule5 records
Nitrate5 records
Revised Total Coliform Rule4 records
Lead and Copper Rule4 records
Public Notice3 records
Arsenic3 records
Total Trihalomethanes (TTHMs)2 records
Category counts aggregate historical compliance records across listed systems. They do not show current concentrations or household test results.