Water quality in Hermiston, Oregon
Hermiston is in Umatilla County. 77 active public water systems serve the county; 68 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 Umatilla County
33 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Tierra Linda Estates |
450 | 5 | 1.0 mi | |
| Country Squire Estates |
150 | 2 | 1.6 mi | |
| Vista Home Park |
300 | 2 | 1.6 mi | |
| Chart Subdivision |
125 | 2 | 2.3 mi | |
| Sunridge Water INC |
200 | 6 | 2.5 mi | |
| North Hill Water Corporation |
100 | 4 | 2.9 mi | |
| Charles Tracts Water Company |
290 | 4 | 3.4 mi | |
| Stanfield, City of |
2,115 | 2 | 5.4 mi | |
| Power City Water Co-Op |
70 | 5 | 5.5 mi | |
| Umatilla, City of |
8,256 | 3 | 6.2 mi | |
| Shady Rest Mobile Court |
110 | 2 | 6.7 mi | |
| Echo, City of |
632 | 1 | 7.6 mi | |
| Hat Rock Mobile Court |
60 | 2 | 7.7 mi | |
| Hat Rock Water Company |
150 | 2 | 8.2 mi | |
| Rieth Water District |
150 | 1 | 23.2 mi | |
| Pendleton, City of |
16,996 | 2 | 26.3 mi | |
| Stewarts Addition |
50 | 5 | 27.8 mi | |
| Green Meadows Wtr Corporation |
75 | 3 | 27.9 mi | |
| Halls Trailer Court |
60 | 2 | 28.4 mi | |
| Helix, City of |
190 | 4 | 30.2 mi | |
| Heritage Improvement District |
125 | 0 | 32.3 mi | |
| Pilot Rock, City of |
1,326 | 2 | 32.5 mi | |
| Adams Water Dept, City of |
400 | 1 | 35.1 mi | |
| Athena, City of |
1,238 | 1 | 38.3 mi | |
| Vincent Water Company |
90 | 2 | 39.4 mi |
Non-community systems in Umatilla County (43: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Umatilla County, nearest to Hermiston 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 Oregon 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.