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 |
|---|---|---|---|---|
|
Crane Union High/elem SD 1j Harney County |
340 | 5 | 2 | |
|
Camp Makualla Bsa Klamath County |
325 | 3 | 1 | |
|
Carolina Water System Marion County |
300 | 7 | 1 | |
|
Kelso Water Assn Clackamas County |
300 | 8 | 0 | |
|
Oprd la Pine Rec Area-O/nite Deschutes County |
300 | 2 | 0 | |
|
Columbia Plywood Corp Klamath County |
280 | 2 | 0 | |
|
Shady Cove Middle SD #9 Jackson County |
275 | 3 | 1 | |
|
Rufus Public Works Sherman County |
270 | 4 | 0 | |
|
Canby Regency Clackamas County |
265 | 7 | 1 | |
|
Area 61 Josephine County |
260 | 8 | 1 | |
|
Usfs Eagle Creek CG Multnomah County |
255 | 1 | 0 | |
|
Camp Collins YMCA Multnomah County |
250 | 2 | 0 | |
|
Fernridge Mobile Estates Lane County |
250 | 7 | 1 | |
|
Hebo Joint Water & Sanitary Auth Tillamook County |
250 | 4 | 2 | |
|
Santiam Market Linn County |
250 | 3 | 0 | |
|
The Leaburg Store Lane County |
250 | 2 | 0 | |
|
Sherman County School Sherman County |
240 | 1 | 0 | |
|
Sheep Ranch Golf Coos County |
235 | 2 | 0 | |
|
Triangle Lake High/elem SD 90 Lane County |
235 | 6 | 0 | |
|
Lost Lake Resort Hood River County |
231 | 2 | 0 | |
|
Blm Shotgun Rec Site Lane County |
221 | 2 | 0 | |
|
Langlois Water District Curry County |
220 | 7 | 1 | |
|
Tygh Valley Water District Wasco County |
218 | 3 | 0 | |
|
Falcon Cove Beach WD Clatsop County |
215 | 5 | 0 | |
|
Grace Baptist Church Jackson County |
215 | 3 | 1 | |
|
Camp Pioneer Bsa Linn County |
200 | 2 | 0 | |
|
Come N GO Market Marion County |
200 | 2 | 0 | |
|
Corvallis Market Linn County |
200 | 3 | 0 | |
|
Riverside Restaurant & Bar, the Jackson County |
200 | 2 | 0 | |
|
McMenamins Rock Creek Tavern Washington County |
200 | 2 | 0 | |
|
MT Hood RV Village Clackamas County |
200 | 6 | 0 | |
|
Oprd Emigrant Springs State PK Umatilla County |
200 | 2 | 0 | |
|
Pdx Metro Commercial Clackamas County |
200 | 4 | 0 | |
|
People Mart 3 Lane County |
200 | 2 | 0 | |
|
Sunridge Water INC Umatilla County |
200 | 6 | 0 | |
|
Sunshine Plaza Jackson County |
200 | 11 | 1 | |
|
Turner Lds Church Marion County |
200 | 1 | 0 | |
|
Helix, City of Umatilla County |
190 | 4 | 1 | |
|
Barlow Trail Estates Clackamas County |
180 | 2 | 0 | |
|
Neighborhood Church Clackamas County |
180 | 3 | 1 | |
|
Timber Water Association Washington County |
180 | 9 | 2 | |
|
Speedy Mart Riverbanks Josephine County |
175 | 3 | 1 | |
|
Mountain Air Water Assoc Clackamas County |
170 | 5 | 0 | |
|
Duplex Village Water System Marion County |
165 | 3 | 1 | |
|
Camp Howard-Cyo Clackamas County |
160 | 2 | 0 | |
|
Elderberry Nehalem WS Clatsop County |
160 | 8 | 1 | |
|
Usfs Poole Creek Campground Douglas County |
160 | 1 | 0 | |
|
View Point Trailer Court Wasco County |
160 | 5 | 1 | |
|
Adrian, City of Malheur County |
159 | 9 | 0 | |
|
Burns Paiute Burns · County |
155 | 13 | 3 |
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.