Tapcensus

Nitrate violations in Oregon

363 active public water systems in Oregon had a Nitrate violation in the past three years, 1 of them in the latest quarter of EPA's data. What Nitrate is and why it matters.

Health effects: Methemoglobinemia in infants under 6 months: gut bacteria convert nitrate to nitrite, which blocks oxygen transport in blood. Pregnant women should also take precautions. Chronic adult exposure at elevated levels may increase cancer risk.

Systems with a Nitrate violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Grants Pass KOA Jumpoff Joe Creek
Josephine County
60 2 0
Highland View Mobile Home Park
Clackamas County
60 2 0
Holy Family Academy
Marion County
60 5 0
Lakeshore Terrace
Marion County
60 3 1
Last Chance Saloon
Marion County
60 3 0
Rusted Gate Farm
Jackson County
60 2 0
Sand-N-Wood Mobile Villa
Coos County
60 5 2
Shield Crest Golf Club
Klamath County
60 4 1
Welches Water Company
Clackamas County
60 9 0
Zig Zag Inn
Clackamas County
60 2 0
Antelope, City of
Wasco County
55 4 0
Oasis Cafe & Motel RV
Malheur County
55 4 0
Willamette Hazelnut INC
Yamhill County
55 4 0
Oak Park Congregation
Marion County
51 2 0
Albany Rifle & Pistol Club
Linn County
50 3 0
Annex Charter School
Malheur County
50 5 1
Camp Adams
Clackamas County
50 2 0
Cedar Tree Mobile Home Park
Columbia County
50 3 0
Chehalem Valley Winery Tasting Room
Yamhill County
50 2 0
Dairy Creek Tavern
Washington County
50 3 1
Douglas CO Pks Scottsburg
Douglas County
50 2 0
Elmira Church of Christ
Lane County
50 2 0
Winterview Estates
Josephine County
50 6 2
Grace Bible Church
Josephine County
50 2 0
Grand Island Deli
Yamhill County
50 2 0
Hunters Hot Springs Resort
Lake County
50 3 0
Hyatt Lake Resort
Jackson County
50 3 0
Jefferson Baptist Church
Marion County
50 6 0
Klamath CO Pks Hagelstein Park
Klamath County
50 2 0
Lithia Springs Resort
Jackson County
50 3 0
Lively Station
Marion County
50 3 0
MR Rascals
Josephine County
50 2 0
MT Hood Inn
Clackamas County
50 2 0
Oasis on the Snake
Malheur County
50 3 0
Odessa Market
Klamath County
50 2 0
Picnic Basket Deli
Jackson County
50 2 0
Prospect Cafe and Trophy Room
Jackson County
50 2 0
Prospect Hotel
Jackson County
50 2 0
Red Lily Vineyards
Jackson County
50 2 0
Reeder Beach Resort
Multnomah County
50 1 0
Shadado Inc-Bent Shovel Brewing Pub
Clackamas County
50 1 0
Snaffle Bit Dinner House
Grant County
50 2 0
Sumner Water Corporation
Coos County
50 10 3
Teapot on Wheels
Jackson County
50 2 0
The Dam Bar
Linn County
50 4 2
Triple Tree Restaurant & Lounge
Jackson County
50 1 0
Usfs Anthony Lake CG
Baker County
50 1 0
Valley Vista Water Improv Dist
Jackson County
50 4 1
Verne Root Orchard
Wasco County
50 3 1
Wilderville Country Store
Josephine County
50 3 0
About this data

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