Water quality in Cayuse, Oregon
Cayuse 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
Other community water systems in Umatilla County
33 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Heritage Improvement District |
125 | 0 | 7.0 mi | |
| Halls Trailer Court |
60 | 2 | 8.3 mi | |
| Athena, City of |
1,238 | 1 | 10.2 mi | |
| Pendleton, City of |
16,996 | 2 | 10.7 mi | |
| Green Meadows Wtr Corporation |
75 | 3 | 11.7 mi | |
| Stewarts Addition |
50 | 5 | 11.8 mi | |
| Weston, City of |
714 | 2 | 12.0 mi | |
| Helix, City of |
190 | 4 | 12.7 mi | |
| Rieth Water District |
150 | 1 | 14.5 mi | |
| Pilot Rock, City of |
1,326 | 2 | 18.2 mi | |
| Milton-Freewater, City of |
7,145 | 1 | 20.0 mi | |
| Vincent Water Company |
90 | 2 | 21.0 mi | |
| Green Acres MHP Umatilla CO |
200 | 3 | 22.0 mi | |
| Villadom Mobile Home Park |
115 | 7 | 22.5 mi | |
| Echo, City of |
632 | 1 | 30.2 mi | |
| Stanfield, City of |
2,115 | 2 | 31.5 mi | |
| Hat Rock Mobile Court |
60 | 2 | 33.0 mi | |
| Hat Rock Water Company |
150 | 2 | 33.2 mi | |
| Chart Subdivision |
125 | 2 | 35.1 mi | |
| Country Squire Estates |
150 | 2 | 35.6 mi | |
| Vista Home Park |
300 | 2 | 35.8 mi | |
| Tierra Linda Estates |
450 | 5 | 36.2 mi | |
| Sunridge Water INC |
200 | 6 | 36.2 mi | |
| Hermiston, City of |
20,000 | 2 | 36.2 mi | |
| North Hill Water Corporation |
100 | 4 | 37.1 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 Cayuse 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.