Drinking Water Systems in COOS BAY, Oregon
5 water systems are reported for this city, with a combined service population of 34,706. The systems have 697 EPA violation records in the five-year period ending June 30, 2026.
Water Systems Serving COOS BAY
SUMNER WATER CORPORATION
50 served656 historical records505 recent
D
COOS BAY NORTH BEND WTR BRD
34,500 served18 historical records4 recent
C
WATSONVILLE WATER SYSTEM
27 served162 historical records117 recent
D
COUNTRY CLUB ESTATES WD
45 served38 historical records24 recent
C
GARDEN VALLEY WATER ASSOCIATION
84 served159 historical records47 recent
F
EPA Contaminant Categories in Historical Violation Records
Surface Water Treatment Rule197 records
Revised Total Coliform Rule142 records
Interim Enhanced Surface Water Treatment Rule101 records
Benzene20 records
Gross Alpha18 records
Coliform (TCR)17 records
Radium-22616 records
Lead and Copper Rule15 records
Nitrate14 records
Uranium14 records
Category counts aggregate historical compliance records across listed systems. They do not show current concentrations or household test results.