E. coli (Escherichia coli) violations in Oregon
204 active public water systems in Oregon had a E. coli (Escherichia coli) violation in the past three years, 204 of them still unresolved. What E. coli (Escherichia coli) is and why it matters.
Systems with a E. coli (Escherichia coli) violation
Unresolved first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Woodburn, City of Marion County |
29,455 | 3 | 1 | |
|
Milwaukie, City of Clackamas County |
20,946 | 6 | 1 | |
|
LA Pine, City of Deschutes County |
2,807 | 2 | 2 | |
|
Dayton, City of Yamhill County |
2,535 | 2 | 1 | |
|
Irrigon, City of Morrow County |
2,133 | 3 | 2 | |
|
Ote Manzanita Rest Area Josephine County |
1,200 | 1 | 1 | |
|
Loves Travel Stop-Boardman Morrow County |
999 | 5 | 1 | |
|
Hermiston Fuel & GO Umatilla County |
800 | 1 | 1 | |
|
Short Stop #1 Umatilla County |
650 | 3 | 1 | |
|
Westport Water Association Clatsop County |
550 | 2 | 2 | |
|
Western Christian School Polk County |
540 | 2 | 1 | |
|
Lil Pantry Xpress Merlin Josephine County |
512 | 1 | 1 | |
|
Lamb Weston Umatilla County |
500 | 3 | 1 | |
|
Oprd Clyde Holliday Wayside Grant County |
450 | 2 | 1 | |
|
Douglas CO Pks Halfmoon Bay Douglas County |
400 | 4 | 2 | |
|
Portland Travel Center Marion County |
400 | 2 | 2 | |
|
High Desert Estates Crook County |
380 | 2 | 1 | |
|
Western Hills MH Estates Columbia County |
375 | 5 | 3 | |
|
Noti Market Lane County |
350 | 2 | 1 | |
|
Crane Union High/elem SD 1j Harney County |
340 | 5 | 2 | |
|
Camp Makualla Bsa Klamath County |
325 | 3 | 1 | |
|
Lost River High School Klamath County |
320 | 2 | 1 | |
|
Bly Water District Klamath County |
310 | 5 | 2 | |
|
Buy 2 at Pleasant Hill Lane County |
300 | 1 | 1 | |
|
Dari Mart #33 Lane County |
300 | 1 | 1 | |
|
Wallowa Lake Tramway Wallowa County |
300 | 2 | 1 | |
|
Keno Water CO INC Klamath County |
290 | 3 | 1 | |
|
Oregon Outdoor Education Center Polk County |
284 | 2 | 1 | |
|
Shady Cove Middle SD #9 Jackson County |
275 | 3 | 1 | |
|
North Lake School SD 14 Lake County |
260 | 1 | 1 | |
|
Mohawk General Store Lane County |
250 | 1 | 1 | |
|
Rainbow Market Jefferson County |
250 | 3 | 2 | |
|
Westview Mobile Estates Washington County |
250 | 2 | 1 | |
|
Diner 62 Jackson County |
243 | 4 | 1 | |
|
Hidden Valley Mobile Home Estates Deschutes County |
240 | 2 | 2 | |
|
Grace Baptist Church Jackson County |
215 | 3 | 1 | |
|
Blodgett Country Store Benton County |
210 | 2 | 2 | |
|
Columbia CO Pks-Hudson/parcher Columbia County |
200 | 2 | 1 | |
|
Crescent Lake Lodge Resort Klamath County |
200 | 3 | 1 | |
|
Green Acres MHP Umatilla CO Umatilla County |
200 | 3 | 2 | |
|
Paulina Lake Lodge INC Deschutes County |
200 | 1 | 1 | |
|
River Valley Church Redwood Campus Josephine County |
200 | 1 | 1 | |
|
Rivers West RV Park (uiuc) Roseburg · County |
200 | 1 | 0 | |
|
Ultimook Running Camp Tillamook County |
200 | 1 | 1 | |
|
Wooden Shoe Tulip Farm & Vineyard Clackamas County |
200 | 1 | 1 | |
|
Camp Kilowan Polk County |
180 | 2 | 1 | |
|
Country Garden Estates MHP Morrow County |
175 | 2 | 1 | |
|
Speedy Mart Riverbanks Josephine County |
175 | 3 | 1 | |
|
MT Hood Kiwanis Camp Clackamas County |
160 | 1 | 1 | |
|
Trail Christian Fellowship Jackson County |
151 | 3 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved E. coli (Escherichia coli), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not E. coli (Escherichia coli) 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.