Drinking Water Systems in HERMISTON, Oregon
8 water systems are reported for this city, with a combined service population of 21,118. The systems have 44 EPA violation records in the five-year period ending June 30, 2026.
Water Systems Serving HERMISTON
HERMISTON, CITY OF
20,000 served83 historical records6 recent
C
NORTH HILL WATER CORPORATION
100 served175 historical records12 recent
D
CHARLES TRACTS WATER COMPANY
290 served361 historical records11 recent
C
HAT ROCK WATER COMPANY
150 served112 historical records4 recent
C
CHART SUBDIVISION
125 served132 historical records2 recent
B
VISTA HOME PARK
300 served32 historical records3 recent
C
BLACK MOUNTAIN WATER DISTRICT
43 served109 historical records4 recent
C
SHADY REST MOBILE COURT
110 served18 historical records2 recent
B
EPA Contaminant Categories in Historical Violation Records
Coliform (TCR)165 records
Nitrate45 records
Revised Total Coliform Rule32 records
Benzene24 records
Consumer Confidence Rule23 records
OXAMYL14 records
1,2-Dichloropropane14 records
Chloramine14 records
Styrene14 records
Vinyl Chloride14 records
Category counts aggregate historical compliance records across listed systems. They do not show current concentrations or household test results.