Drinking Water Systems in Prosser, Washington
5 water systems are reported for this city, with a combined service population of 12,595. The systems have 5 EPA violation records in the five-year period ending June 30, 2026.
Water Systems Serving Prosser
RAINBOW COURT
120 served21 historical records1 recent
B
ROZA HEIGHTS WATER ASSN
110 served80 historical records2 recent
B
PROSSER CITY OF
12,070 served8 historical records1 recent
B
KIONA VILLAGE COURT
124 served52 historical records
A
ALDERDALE WATER ASSN
171 served54 historical records1 recent
B
EPA Contaminant Categories in Historical Violation Records
Nitrate43 records
Coliform (TCR)41 records
Fluoride8 records
Lead and Copper Rule7 records
Chromium6 records
Selenium6 records
Cadmium6 records
Thallium6 records
Barium6 records
Arsenic5 records
Category counts aggregate historical compliance records across listed systems. They do not show current concentrations or household test results.