Drinking Water Systems in Walla Walla, Washington
15 water systems are reported for this city, with a combined service population of 48,915. The systems have 118 EPA violation records in the five-year period ending June 30, 2026.
Water Systems Serving Walla Walla
PRESCOTT TOWN OF
522 served21 historical records1 recent
B
PROSPECT HEIGHTS COMM WATER ASSN
40 served145 historical records40 recent
C
SUMMERS CIRCLE WATER LLC
82 served17 historical records
A
DIXIE WATER ASSOCIATION
240 served52 historical records21 recent
D
WALLA WALLA UNIVERSITY
1,273 served30 historical records3 recent
C
VALLE LINDO HOMES
787 served15 historical records
A
WALLA WALLA WATER DIVISION
42,959 served83 historical records11 recent
C
BLALOCK ORCHARDS DIST 12
193 served8 historical records
A
SYDNEY HEIGHTS WATER ASSN
130 served43 historical records11 recent
C
RESER CREEK WATER SYSTEM
26 served8 historical records
A
CONSOLIDATED IRRIGATION DIST 14
1,555 served23 historical records
A
BLALOCK ORCHARD DIST 10
250 served31 historical records1 recent
B
GREEN TANK IRR DISTRICT 11
553 served247 historical records
A
HYDRO IRRIGATION DISTRICT NO 9
260 served4 historical records
A
KOOSKOOSKIE CABIN OWNERS INC.
45 served253 historical records30 recent
C
EPA Contaminant Categories in Historical Violation Records
Coliform (TCR)46 records
Pentachlorophenol34 records
Benzene33 records
Dalapon26 records
2,4,5-TP26 records
Dinoseb26 records
Picloram26 records
Surface Water Treatment Rule22 records
Chlordane17 records
HEXACHLOROBENZENE17 records
Category counts aggregate historical compliance records across listed systems. They do not show current concentrations or household test results.