Oregon
Grant County drinking water quality
14 active public water systems serve 5,018 people in Grant County. 1 are compliant, 13 had at least one EPA violation in the past three years, 0 are designated serious violators, and 1 carries a health flag.
Needs attention
Community water systems
8 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
John Day, City of |
1,617 | 2 | 0 | |
|
Prairie City |
841 | 4 | 0 | |
|
Canyon City Water Department |
666 | 3 | 1 | |
|
Mount Vernon, City of |
510 | 1 | 0 | |
|
Seneca, City of |
200 | 3 | 0 | |
|
Long Creek, City of |
173 | 1 | 0 | |
|
Dayville, City of |
155 | 0 | 0 | |
|
Monument, City of |
115 | 4 | 1 |
Non-community systems (6: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Oprd Clyde Holliday Wayside |
450 | 2 | 1 | |
|
Nps John Day Nm/sheep Rock |
115 | 1 | 0 | |
|
Lake Creek Youth Rec Camp |
75 | 1 | 0 | |
|
Snaffle Bit Dinner House |
50 | 2 | 0 | |
|
Usfs Magone Lake CG |
26 | 1 | 0 | |
|
Usfs Bull Prairie Sprg CG |
25 | 4 | 2 |
Inactive systems (25, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
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.