Arsenic violations in Oregon
56 active public water systems in Oregon had a Arsenic violation in the past three years, 11 of them in the latest quarter of EPA's data. What Arsenic is and why it matters.
Systems with a Arsenic violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
McNulty Water Pud Columbia County |
2,500 | 2 | 0 | |
|
OR Youth Authority Maclaren Marion County |
750 | 5 | 1 | |
|
Paisley, City of Lake County |
245 | 2 | 0 | |
|
Walterville Elem SD 19 Lane County |
194 | 2 | 0 | |
|
Adrian, City of Malheur County |
159 | 9 | 0 | |
|
Woodburn Mobile Estates Marion County |
70 | 4 | 2 | |
|
Golf MHP Malheur County |
60 | 6 | 1 | |
|
MT Terrace MHP Coos County |
60 | 4 | 1 | |
|
Lazy Acres Mobile Home Park Marion County |
59 | 4 | 2 | |
|
River Village MHP Malheur County |
40 | 7 | 2 | |
|
Lakeside Mobile Home Park (a) Lane County |
28 | 4 | 1 | |
|
Warm Springs Water Treatment Plant Warm Springs · County |
3,800 | 16 | 5 | |
|
Youngs River Lewis & Clark WD Clatsop County |
2,580 | 7 | 0 | |
|
Lakeview, Town of Lake County |
2,476 | 10 | 2 | |
|
North Marion SD #15 Marion County |
2,100 | 2 | 0 | |
|
Clatskanie, City of Columbia County |
2,096 | 5 | 0 | |
|
Rickreall Water Association Polk County |
1,650 | 6 | 0 | |
|
Ninety-One Elem SD 91 Clackamas County |
450 | 3 | 0 | |
|
Interlachen Water Pud Multnomah County |
360 | 7 | 0 | |
|
Kelso Water Assn Clackamas County |
300 | 8 | 0 | |
|
Fry Foods Malheur County |
280 | 3 | 0 | |
|
Area 61 Josephine County |
260 | 8 | 1 | |
|
Triangle Lake High/elem SD 90 Lane County |
235 | 6 | 0 | |
|
Sunshine Plaza Jackson County |
200 | 11 | 1 | |
|
Country Estates Mobile Park Josephine County |
175 | 6 | 0 | |
|
Harper High/elementary SD 66 Malheur County |
170 | 4 | 2 | |
|
Green Oaks Park LLC Marion County |
165 | 2 | 0 | |
|
Paradise/rogue Meadows WS Jackson County |
165 | 5 | 1 | |
|
Burns Paiute Burns · County |
155 | 13 | 3 | |
|
Sportsmans Park Water Assn Wasco County |
150 | 6 | 1 | |
|
Chateau Mobile Home Park Marion County |
136 | 7 | 1 | |
|
Fischers Place MHP Malheur County |
130 | 10 | 4 | |
|
Fall Creek Farm and Nursery Lane County |
120 | 1 | 0 | |
|
HD Aviation Marion County |
100 | 3 | 0 | |
|
Medford Gold Hill KOA Jackson County |
100 | 7 | 0 | |
|
Currinsville Mobile Home Park Clackamas County |
90 | 7 | 2 | |
|
Dunn Court Duplexes Marion County |
88 | 3 | 0 | |
|
Hawks Point Lane County |
75 | 3 | 1 | |
|
Nps Oregon Caves National Monument O&m Josephine County |
75 | 8 | 0 | |
|
Blm Burns District Office Harney County |
70 | 1 | 0 | |
|
Evergreen Meadows Wtr Improv Dist Jackson County |
70 | 5 | 0 | |
|
Prescott, City of Columbia County |
70 | 6 | 1 | |
|
US Silica Malheur County |
69 | 1 | 0 | |
|
Jasper Mountain Center Lane County |
65 | 1 | 0 | |
|
Keiths Mobile Home Park Josephine County |
55 | 2 | 1 | |
|
Annex Charter School Malheur County |
50 | 5 | 1 | |
|
Valley Vista Water Improv Dist Jackson County |
50 | 4 | 1 | |
|
McKee Bridge Mobile Home Park Jackson County |
40 | 6 | 1 | |
|
Scofield Mobile Home Court Marion County |
39 | 5 | 1 | |
|
Cascade Gorge Properties Jackson County |
33 | 8 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Arsenic, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Arsenic 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. Retrieved from ECHO on Oct 11, 2026.