Water quality in Sunnyside, Washington
Sunnyside 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 |
|---|---|---|---|---|
| Sunnyside City of |
17,194 | 4 | 0.1 mi | |
| Outlook Community Water |
282 | 0 | 3.7 mi | |
| Grandview City of |
11,010 | 2 | 6.1 mi | |
| Mabton City of |
2,150 | 0 | 7.3 mi | |
| Panorama Place Water Assn |
220 | 1 | 8.2 mi | |
| Yak CO Crewport |
192 | 2 | 8.6 mi | |
| Granger Water Department |
3,993 | 1 | 9.1 mi | |
| Green Valley Estates Water Assn |
53 | 0 | 12.4 mi | |
| Sun Acres Road & Water Assn |
47 | 1 | 12.7 mi | |
| Zillah City of |
3,518 | 1 | 13.7 mi | |
| MT Adams Country Club Estates |
31 | 0 | 14.7 mi | |
| Toppenish Water Department |
13,382 | 1 | 15.4 mi | |
| Yak CO Buena Water System |
952 | 1 | 16.8 mi | |
| Willow Tree Park |
176 | 0 | 17.9 mi | |
| Lombard Loop Water Association |
180 | 2 | 19.4 mi | |
| Wapato Waterworks |
5,255 | 3 | 21.9 mi | |
| Moxie Community LLC |
114 | 0 | 22.5 mi | |
| Butterfield Water Company |
108 | 0 | 23.7 mi | |
| Playland Park |
65 | 0 | 23.9 mi | |
| HI Valley View |
67 | 1 | 24.2 mi | |
| Country Mobile Estates |
180 | 0 | 25.3 mi | |
| Moxee Water Department |
5,599 | 0 | 25.4 mi | |
| Alps Mobile Home Park |
150 | 2 | 25.7 mi | |
| Harrah Water System |
1,304 | 1 | 26.3 mi | |
| Burman Acres Water |
92 | 0 | 27.0 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 Sunnyside 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.