Tapcensus

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 in the latest quarter of EPA's data. What E. coli (Escherichia coli) is and why it matters.

Health effects: Most E. coli strains cause diarrheal illness. Some strains (e.g., O157:H7) produce toxins causing severe bloody diarrhea, hemolytic uremic syndrome (HUS — a form of kidney failure), and death — especially in children under 5 and the elderly. Even non-pathogenic strains in drinking water indicate that disease-causing organisms may also be present.

Systems with a E. coli (Escherichia coli) violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Hiland WC Helton
Marion County
75 4 2
Topaz Farm
Multnomah County
75 2 1
Cypress Grove RV Park
Jackson County
72 3 1
Beavercreek United Church of Christ
Clackamas County
70 2 1
Shady Acres Mhp, LLC
Jackson County
70 3 1
Sunset Acres Water Co-Op INC
Deschutes County
70 3 1
North Bayside Estates-North
Coos County
65 7 3
Rogue River Inn
Jackson County
65 3 1
Shield Crest Water Assn
Klamath County
65 4 3
Elk River Campground
Curry County
64 11 2
Golf MHP
Malheur County
60 6 1
Highland Heights Estates
Josephine County
60 2 1
Juniper Grove RV Park
Crook County
60 2 1
Kimball Creek Bend Resort
Curry County
60 1 1
Klamath Travel Inn
Klamath County
60 2 1
Northwood Water District INC
Tillamook County
60 2 1
O'aces Ii, the
Josephine County
60 1 1
Shield Crest Golf Club
Klamath County
60 4 1
Usfs Clackamas Lake WS
Clackamas County
60 1 1
Wyeast Mountain Academy
Clackamas County
60 3 2
Dry Creek Airpark
Crook County
58 2 0
Holiday Mobile Home Park
Josephine County
58 4 2
Sportsmans River RV Park
Klamath County
55 2 1
D Stake Mill
Yamhill County
54 4 1
Sportsmans Paradise Motel/tc
Klamath County
52 8 4
Bates Motel & Deli
Malheur County
50 2 1
Brooks Food Market
Marion County
50 2 1
Winterview Estates
Josephine County
50 6 2
Oregon Berry Packing INC
Washington County
50 1 1
Pleasant Valley Market
Multnomah County
50 1 1
Stewarts Addition
Umatilla County
50 5 2
The Dam Bar
Linn County
50 4 2
The Falls at Camper Cove
Tillamook County
50 3 2
Trail Market and MHP
Jackson County
50 3 2
Verne Root Orchard
Wasco County
50 3 1
Willowcreek Store & Cafe
Malheur County
50 4 1
Hidden Pines RV Park
Deschutes County
46 3 1
Dark Hollow Water Association
Jackson County
45 2 2
Diamond Lake Gas Station
Douglas County
45 5 0
J & M Mobile Home Park
Columbia County
45 5 2
Tree Top
Marion County
45 3 1
Sky Crest Heights Homeowners
Josephine County
44 4 1
Club Paesano Cedarville Park
Multnomah County
43 3 2
Blm Lakeview Airbase
Lake County
40 3 1
Camp Remote
Coos County
40 3 1
Chemical Waste Mgt of NW INC
Gilliam County
40 2 1
Copper Stone INC
Marion County
40 2 1
Dairy Diner
Klamath County
40 3 2
Hogg Heaven MHP
Columbia County
40 7 4
Ikes Lakeside Pizza
Lane County
40 2 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.