Water quality in Ahtanum, Washington
Ahtanum is in Yakima County. 222 active public water systems serve the county; 67 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Yakima County
88 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Opr H2a |
100 | 0 | 1.4 mi | |
| Sun-Tides RV Park |
100 | 1 | 2.3 mi | |
| Saddle Ridge Water Users |
60 | 0 | 2.5 mi | |
| Tieton Hills Water CO |
75 | 0 | 3.5 mi | |
| Sun Tides Community LLC |
63 | 0 | 4.8 mi | |
| Yakima Water Division City of |
112,858 | 1 | 4.9 mi | |
| Brocious Water System |
100 | 0 | 5.0 mi | |
| South Hills Water Users Assn INC |
135 | 1 | 5.0 mi | |
| Union Gap Water |
6,433 | 0 | 5.4 mi | |
| Brown Taylor Water CO INC |
30 | 0 | 5.7 mi | |
| Sun Tides Vista Homeowners Assn |
350 | 0 | 5.9 mi | |
| Marys Garden |
280 | 0 | 6.2 mi | |
| Green Meadows Subdivision |
32 | 1 | 6.3 mi | |
| Starks Mobile Home Court |
60 | 0 | 6.6 mi | |
| Woodland Park Mobil Court |
75 | 0 | 6.8 mi | |
| Gleed Mobile Estates |
76 | 0 | 7.2 mi | |
| Selah City of |
9,331 | 0 | 7.7 mi | |
| Skyline Mobile Home Park |
340 | 2 | 8.0 mi | |
| Cascadia Park Water Company |
93 | 0 | 8.2 mi | |
| McAulays Home Sites |
58 | 0 | 8.3 mi | |
| North Terra Vista Water Users Assn |
52 | 0 | 8.4 mi | |
| Alps Mobile Home Park |
150 | 2 | 8.5 mi | |
| Yak CO Terrace Heights |
8,410 | 3 | 8.5 mi | |
| Selandia Manor Water Assn |
130 | 0 | 8.6 mi | |
| Neals Valley View Addition Wtr CO |
62 | 0 | 8.7 mi |
Non-community systems in Yakima County (133: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Yakima County, nearest to Ahtanum first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Washington records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.