Tapcensus

Groundwater Rule (GWR) violations in Oregon

71 active public water systems in Oregon had a Groundwater Rule (GWR) violation in the past three years, 32 of them in the latest quarter of EPA's data. What Groundwater Rule (GWR) is and why it matters.

Health effects: Protects against enteric viruses, which can contaminate groundwater via cracked well casings, failing septic systems, or animal waste. Viruses persist longer in groundwater than in surface water. Hepatitis A and norovirus are the primary pathogens of concern.

Systems with a Groundwater Rule (GWR) violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Boardman, City of
Morrow County
5,749 3 1
Blm Loon Lake Rec Site
Douglas County
375 1 0
Lostine, City of
Wallowa County
350 3 1
Simnasho Schoolie
Warm Springs · County
350 9 3
Wayside Market
Umatilla County
250 1 0
Laurelwood Water Users
Washington County
200 6 2
Riverstone Mobile Home Park
Lane County
168 2 0
Burns Paiute
Burns · County
155 13 3
Rays Food Place #71
Josephine County
130 2 0
Sidwalter
Warm Springs · County
130 10 3
Circle K #9641
Marion County
100 4 2
Elk Lake Resort
Deschutes County
100 3 0
Riverpark RV Resort
Josephine County
100 1 0
Beaver Creek RV Park
Josephine County
98 2 0
Flying K Trailer Ranch
Union County
96 2 0
Osu Rowing Center
Linn County
90 3 1
Kellogg Springs Christian Camp
Douglas County
80 2 1
Rodeway Inn Rice Hill
Douglas County
80 1 0
Idaho Power-Oxbow Village
Baker County
75 4 0
Rogue River Mobile Estates
Jackson County
72 6 1
Power City Water Co-Op
Umatilla County
70 5 0
Oneys Restaurant/lounge
Clatsop County
60 3 0
Rogue River Campground
Jackson County
60 2 0
Coast Marina & RV Park
Lane County
50 2 0
Deer Island Village MHP
Columbia County
50 3 3
MR Rascals
Josephine County
50 2 0
Umpqua River Inn & Suites
Douglas County
40 2 0
Usfs Lobster Creek CG
Curry County
36 1 0
Smith River Marina
Douglas County
30 4 1
Birch Creek Golf Course
Umatilla County
25 2 0
Eastgate Vet Clinic
Linn County
25 3 0
Hanley Farm Living History Museum
Jackson County
25 4 0
Medford Water Commission
Jackson County
106,068 3 0
Brookings, City of
Curry County
7,120 1 0
Lafayette, City of
Yamhill County
4,423 3 0
Dundee, City of
Yamhill County
2,960 2 0
Bay City Water System
Tillamook County
1,400 4 0
Neahkahnie Water District
Tillamook County
600 4 0
Hiland WC Illahe Golf Club Estates
Marion County
561 6 0
Maupin, City of
Wasco County
420 7 2
Western Hills MH Estates
Columbia County
375 5 3
Canby Regency
Clackamas County
265 7 1
Raineys Corner Market
Jackson County
265 3 1
Triangle Lake High/elem SD 90
Lane County
235 6 0
Days Creek Charter School
Douglas County
230 5 1
Oprd Humbug Mtn Campground
Curry County
200 1 0
Rogue Valley Adventist School
Jackson County
135 5 0
Oprd Loeb State Park
Curry County
132 2 0
Cswa Chehalem Springs
Yamhill County
130 5 0
Applewood Mobile Home Park
Lane County
125 1 0
About this data

A system is counted once if any of its violations in the past three years involved Groundwater Rule (GWR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Groundwater Rule (GWR) 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.