COUNTY WATER-SYSTEM LEDGER
Yakima, Washington
EPA’s September 2026 export lists 13 active community water systems serving Yakima, Washington, with 2 current-violation flags and 0 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving Yakima, Washington
EPA associates 13 covered systems with Yakima, Washington; their reported population-served values total 234,113 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| Yakima Water Division City OfWA5399150 | 112,858 | Surface water | No current violation flagged |
| Nob Hill Water AssociationWA5359700 | 38,050 | Ground water | No current violation flagged |
| Sunnyside City OfWA5385400 | 17,194 | Ground water | Current monitoring/reporting flag |
| Grandview City OfWA5328970 | 11,010 | Ground water | No current violation flagged |
| Selah City OfWA5377400 | 9,331 | Ground water | No current violation flagged |
| Toppenish Water DepartmentWA5388850 | 8,950 | Ground water | No current violation flagged |
| Yak Co - Terrace HeightsWA5306029 | 8,410 | Ground water | No current violation flagged |
| Union Gap WaterWA5390250 | 6,433 | Ground water | No current violation flagged |
| Moxee Water DepartmentWA5357300 | 5,599 | Ground water | No current violation flagged |
| Wapato WaterworksWA5392800 | 5,255 | Ground water | No current violation flagged |
| Granger Water DepartmentWA5329000 | 3,993 | Ground water | No current violation flagged |
| Zillah City OfWA5399800 | 3,518 | Ground water | No current violation flagged |
| Naches Town OfWA5358100 | 3,512 | Ground water | Current monitoring/reporting flag |
02 / SOURCE MIX
Primary water sources for Yakima, Washington
EPA classifies 13 systems serving Yakima, Washington across 2 primary-source categories; Ground water is the largest category with 12 systems.
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.