Surface Water Treatment Rule (SWTR) violations in Oregon
139 active public water systems in Oregon had a Surface Water Treatment Rule (SWTR) violation in the past three years, 46 of them in the latest quarter of EPA's data. What Surface Water Treatment Rule (SWTR) is and why it matters.
Systems with a Surface Water Treatment Rule (SWTR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Umpqua Basin Water Assoc Douglas County |
9,499 | 4 | 0 | |
|
Seaside Water Department Clatsop County |
7,482 | 5 | 0 | |
|
Spirit Mountain Casino Grand Ronde · County |
7,420 | 1 | 0 | |
|
Rainbow Water District Lane County |
6,300 | 2 | 0 | |
|
Reedsport, City of Douglas County |
4,836 | 5 | 0 | |
|
Coquille, City of Coos County |
3,953 | 5 | 0 | |
|
Warm Springs Water Treatment Plant Warm Springs · County |
3,800 | 16 | 5 | |
|
Jefferson, City of Marion County |
3,348 | 1 | 0 | |
|
Gold Beach, City of Curry County |
3,000 | 5 | 0 | |
|
SW Lincoln CO Water Pud Lincoln County |
3,000 | 7 | 0 | |
|
Youngs River Lewis & Clark WD Clatsop County |
2,580 | 7 | 0 | |
|
Rogue River, City of Jackson County |
2,345 | 3 | 0 | |
|
Vernonia, City of Columbia County |
2,100 | 6 | 1 | |
|
Oprd Cape Lookout State Park Tillamook County |
2,005 | 3 | 0 | |
|
City of Rainier Columbia County |
1,932 | 8 | 0 | |
|
Amity, City of Yamhill County |
1,810 | 6 | 0 | |
|
Netarts Water District Tillamook County |
1,800 | 3 | 0 | |
|
Cannon Beach, City of Clatsop County |
1,710 | 3 | 0 | |
|
Canyonville, City of Douglas County |
1,662 | 6 | 0 | |
|
Wickiup Water District Clatsop County |
1,630 | 5 | 0 | |
|
Hillsboro-Cherry Grove Washington County |
1,628 | 3 | 0 | |
|
Glide Water Association Douglas County |
1,523 | 2 | 0 | |
|
Colton Water District Clackamas County |
1,500 | 4 | 0 | |
|
Usfs Timberline Lodge 1 Clackamas County |
1,500 | 4 | 0 | |
|
Depoe Bay, City of Lincoln County |
1,398 | 3 | 0 | |
|
Gold Hill, City of Jackson County |
1,335 | 3 | 0 | |
|
Lyons Mehama Water District Linn County |
1,300 | 6 | 0 | |
|
Lowell, City of Lane County |
1,264 | 3 | 0 | |
|
Siletz, City of Lincoln County |
1,235 | 3 | 0 | |
|
Riddle, City of Douglas County |
1,224 | 4 | 0 | |
|
Port Orford, City of Curry County |
1,200 | 4 | 0 | |
|
Drain, City of Douglas County |
1,194 | 3 | 0 | |
|
Joseph, City of Wallowa County |
1,182 | 3 | 0 | |
|
Falls City, City of Polk County |
1,051 | 3 | 0 | |
|
Hiland WC Shady Cove Jackson County |
1,000 | 5 | 0 | |
|
Rhododendron Wtr Assoc Clackamas County |
980 | 2 | 0 | |
|
Oakland, City of Douglas County |
954 | 4 | 1 | |
|
Buell-Red Prairie WD Polk County |
800 | 8 | 0 | |
|
Panther Creek WD Lincoln County |
800 | 5 | 0 | |
|
Monroe, City of Benton County |
723 | 5 | 1 | |
|
Beaver Water District Tillamook County |
600 | 4 | 0 | |
|
Mapleton Water District Lane County |
600 | 8 | 0 | |
|
Hellgate River Lodge Josephine County |
400 | 1 | 0 | |
|
Fishhawk Lake Reserve and Community Columbia County |
350 | 6 | 1 | |
|
Sunstone Boulder Creek Lincoln County |
350 | 5 | 0 | |
|
Oprd JM Honeyman Memorial Park Lane County |
350 | 1 | 0 | |
|
Row River Valley Water Dist Lane County |
340 | 7 | 1 | |
|
Big Lake Youth Camp Linn County |
325 | 1 | 0 | |
|
Cascade Pacific Pulp LLC Linn County |
300 | 3 | 0 | |
|
Nps Oregon Caves Natl Mon Josephine County |
280 | 1 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Surface Water Treatment Rule (SWTR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Surface Water Treatment Rule (SWTR) 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.