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
Patio RV Park
Lane County
125 1 0
Best Western Pier Point Inn
Lane County
100 1 0
Hopewell Water Company
Yamhill County
100 4 2
Salmon Run Golf Course
Curry County
100 1 0
Tu-Tu-Tun Lodge/four Seasons Resort
Curry County
100 1 0
Bear Creek Mobile Home Park
Jackson County
95 2 0
Caseys Riverside Park
Lane County
90 2 1
Westridge Subdivision
Crook County
78 3 0
Blue Spruce Mobile Estates
Jackson County
55 3 1
Pioneer Park Co-Op INC
Polk County
54 2 0
Jefferson Baptist Church
Marion County
50 6 0
Laurel Acres Water CO INC
Washington County
50 4 0
Rice Hill RV Park
Douglas County
50 2 0
Cswa Oliver Spring
Yamhill County
40 4 0
McKee Bridge Mobile Home Park
Jackson County
40 6 1
Carmel Beach Water District
Lincoln County
39 4 0
Laughing Alpaca
Josephine County
37 1 0
Coos Golf Club
Coos County
30 3 0
Sunny Wolf Charter Preschool
Josephine County
26 1 0
Merlin Mobile Home Park
Josephine County
25 3 0
Restful Haven Health Club INC
Washington County
20 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.