Nitrate violations in Oregon
363 active public water systems in Oregon had a Nitrate violation in the past three years, 1 of them in the latest quarter of EPA's data. What Nitrate is and why it matters.
Systems with a Nitrate violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Pae Living Building Multnomah County |
25 | 6 | 1 | |
|
Sleighbells Washington County |
25 | 2 | 0 | |
|
South Store Cafe, the Washington County |
25 | 2 | 1 | |
|
Summerfield Vineyards Lane County |
25 | 2 | 0 | |
|
Trackers Water System Clackamas County |
25 | 2 | 0 | |
|
Usfs Bull Prairie Sprg CG Grant County |
25 | 4 | 2 | |
|
Waterin Hole,the Lake County |
25 | 3 | 1 | |
|
Wildwood Annex Water District Clackamas County |
25 | 4 | 1 | |
|
Williams Grange #399 Josephine County |
25 | 1 | 0 | |
|
Winners Horseshoe Annex Malheur County |
25 | 2 | 0 | |
|
Zellers Riverside Bar & Grill Lincoln County |
25 | 3 | 0 | |
|
Alsea River RV Park Lincoln County |
24 | 3 | 0 | |
|
Calkins Acres Improvement INC Lincoln County |
21 | 2 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Nitrate, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Nitrate alone.
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.