EPA EXPORT · 13 SEP 2026FEDERAL COMPLIANCE RECORDS · NOT A HOME WATER TEST
TAP WATERLEDGERPublic system compliance records

COUNTY WATER-SYSTEM LEDGER

Yakima, Washington

Compare active community water systems serving this county in EPA's public export. Systems can serve multiple places, so population totals may overlap.

Systems13active CWS · pop. 2,500+
Population served234,113reported total; may overlap
Current violation flag15.4%2 systems
Serious-violator flag0.0%0 systems

01 / SYSTEMS

Water systems serving Yakima

Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.

Water systemPopulation servedPrimary sourceCurrent export status
Yakima Water Division City OfWA5399150112,858Surface waterNo current violation flagged
Nob Hill Water AssociationWA535970038,050Ground waterNo current violation flagged
Sunnyside City OfWA538540017,194Ground waterCurrent monitoring/reporting flag
Grandview City OfWA532897011,010Ground waterNo current violation flagged
Selah City OfWA53774009,331Ground waterNo current violation flagged
Toppenish Water DepartmentWA53888508,950Ground waterNo current violation flagged
Yak Co - Terrace HeightsWA53060298,410Ground waterNo current violation flagged
Union Gap WaterWA53902506,433Ground waterNo current violation flagged
Moxee Water DepartmentWA53573005,599Ground waterNo current violation flagged
Wapato WaterworksWA53928005,255Ground waterNo current violation flagged
Granger Water DepartmentWA53290003,993Ground waterNo current violation flagged
Zillah City OfWA53998003,518Ground waterNo current violation flagged
Naches Town OfWA53581003,512Ground waterCurrent monitoring/reporting flag

02 / SOURCE MIX

Ground water12 systems · 121,255 served
Surface water1 systems · 112,858 served
How to read the population total

It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.