Coliphage violations in Oregon
224 active public water systems in Oregon had a Coliphage violation in the past three years, 4 of them still unresolved. What Coliphage is and why it matters.
Systems with a Coliphage violation
Unresolved first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Stop and GO Market #3 Jackson County |
125 | 2 | 0 | |
|
Douglas CO Pks Whistlers Bend Douglas County |
100 | 3 | 0 | |
|
Merlin Lds Church Josephine County |
100 | 4 | 0 | |
|
Ashland Valley Inn Jackson County |
59 | 6 | 2 | |
|
Milwaukie, City of Clackamas County |
20,946 | 6 | 1 | |
|
Troutdale, City of Multnomah County |
16,185 | 1 | 0 | |
|
Cornelius, City of Washington County |
14,490 | 2 | 0 | |
|
Prineville, City of Crook County |
11,000 | 5 | 1 | |
|
Sheridan, City of Yamhill County |
6,494 | 7 | 0 | |
|
Boardman, City of Morrow County |
5,749 | 3 | 1 | |
|
Aumsville, City of Marion County |
4,125 | 2 | 0 | |
|
Mount Angel, City of Marion County |
3,650 | 3 | 0 | |
|
Hubbard, City of Marion County |
3,478 | 1 | 0 | |
|
Lakeview, Town of Lake County |
2,476 | 10 | 2 | |
|
Odot HD Gettings Creek Rest Area Lane County |
2,400 | 2 | 0 | |
|
Enterprise, City of Wallowa County |
2,107 | 3 | 0 | |
|
Vale, City of Malheur County |
1,837 | 3 | 0 | |
|
Cannon Beach, City of Clatsop County |
1,710 | 3 | 0 | |
|
Cascade Locks, City of Hood River County |
1,398 | 4 | 0 | |
|
Ote Manzanita Rest Area Josephine County |
1,200 | 1 | 1 | |
|
Aurora, City of Marion County |
1,133 | 3 | 0 | |
|
Odot HD Cabin Creek Rest Area Douglas County |
1,000 | 1 | 0 | |
|
Space Age Fuel Umatilla County |
975 | 1 | 0 | |
|
Rainier SD #13 Columbia County |
950 | 3 | 0 | |
|
Barlow Water District Wasco County |
900 | 2 | 0 | |
|
Parkdale Water Company INC Hood River County |
867 | 2 | 0 | |
|
Buell-Red Prairie WD Polk County |
800 | 8 | 0 | |
|
Halsey, City of Linn County |
800 | 3 | 0 | |
|
Hermiston Fuel & GO Umatilla County |
800 | 1 | 1 | |
|
Ote Memaloose Rest Area Wasco County |
800 | 1 | 0 | |
|
Usace Cottage Grove Lane County |
750 | 3 | 0 | |
|
OR Youth Authority Maclaren Marion County |
750 | 5 | 1 | |
|
Short Stop #1 Umatilla County |
650 | 3 | 1 | |
|
Neahkahnie Water District Tillamook County |
600 | 4 | 0 | |
|
Meriwether Natl Golf Course Washington County |
516 | 3 | 0 | |
|
Burger King-White City Jackson County |
500 | 1 | 0 | |
|
Meadowbrook Grocery Clackamas County |
500 | 3 | 0 | |
|
Usfs Trillium Lake CG Clackamas County |
500 | 2 | 0 | |
|
ST Paul, City of Marion County |
434 | 4 | 0 | |
|
Hiland WC Echo Mountain Lincoln County |
362 | 2 | 0 | |
|
Sams Valley Elem SD #6 Jackson County |
360 | 2 | 0 | |
|
Blm Nhotic Baker County |
350 | 2 | 0 | |
|
Ione, City of Morrow County |
330 | 3 | 1 | |
|
Riverwood MHP Lane CO Lane County |
325 | 1 | 0 | |
|
Glenmorrie Cooperative Assn Clackamas County |
310 | 2 | 0 | |
|
Eagle Crest Mobile Home Park Clackamas County |
300 | 5 | 0 | |
|
Kelso Water Assn Clackamas County |
300 | 8 | 0 | |
|
Molalla River SD Rural Dell Elem Clackamas County |
280 | 1 | 0 | |
|
Shady Cove Middle SD #9 Jackson County |
275 | 3 | 1 | |
|
Nestucca High School Tillamook County |
270 | 3 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Coliphage, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Coliphage 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.