Nitrate violations in Wisconsin
226 active public water systems in Wisconsin had a Nitrate violation in the past three years, 9 of them in the latest quarter of EPA's data. What Nitrate is and why it matters.
Systems with a Nitrate violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Outback Bar Peshtigo Tn · Marinette County |
25 | 3 | 1 | |
|
Pack IT in Pub Tilleda · Shawano County |
25 | 3 | 1 | |
|
Phils Philling Station Townsend Tn · Oconto County |
25 | 3 | 1 | |
|
Pokegama Creek Campground Chetek · Barron County |
25 | 2 | 1 | |
|
Prairie Motel Merrill · Lincoln County |
25 | 4 | 1 | |
|
R Store 44 Mountain Tn · Oconto County |
25 | 4 | 1 | |
|
Rews Roadside Eureka · Winnebago County |
25 | 2 | 0 | |
|
Rubi Mexican Restaurant Casco · Kewaunee County |
25 | 1 | 0 | |
|
Rumors Bar & Grill Mindoro · La Crosse County |
25 | 2 | 1 | |
|
Rustic, the Silver Cliff Tn · Marinette County |
25 | 3 | 1 | |
|
Rusty Nail LLC Coloma · Waushara County |
25 | 3 | 0 | |
|
Sand Bay Beach Suites Ltd Sturgeon Bay · Door County |
25 | 3 | 1 | |
|
ST Boniface Catholic CH Aniwa · Shawano County |
25 | 3 | 0 | |
|
ST Hedwig Cath CH Kewaunee · Kewaunee County |
25 | 2 | 0 | |
|
Sterlingworth Condominiums Elkhorn · Walworth County |
25 | 2 | 0 | |
|
The Motor Company Marinette · Marinette County |
25 | 3 | 1 | |
|
U S F S Two Lakes Cmpgd 1a Drummond · Bayfield County |
25 | 1 | 0 | |
|
U S F S Two Lakes Cmpgd 5 Drummond · Bayfield County |
25 | 1 | 0 | |
|
U S F S Two Lakes Cmpgd 7 Drummond · Bayfield County |
25 | 1 | 0 | |
|
Waubee Lake Lodge Lakewood Tn · Oconto County |
25 | 1 | 0 | |
|
WI Dnr Governor Thompson State PK Maint Bldg Stephenson Tn · Marinette County |
25 | 3 | 0 | |
|
WI Dnr Governor Thompson State PK Visitor Ctr Stephenson Tn · Marinette County |
25 | 4 | 0 | |
|
WI Dnr Richard Bong Sunrise Site 6 Kansasville · Kenosha County |
25 | 2 | 0 | |
|
WI Dot Wayside 7 Ingram · Rusk County |
25 | 2 | 1 | |
|
Wild Rose Shopping Ctr Wild Rose · Waushara County |
25 | 2 | 0 | |
|
Willows End Resort and Campground Hazelhurst · Oneida County |
25 | 1 | 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 Wisconsin 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.