All water systems in Wisconsin
9,089 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Open Door Bible Church Port Washington · Ozaukee County |
25 | 0 | 0 | |
|
Operating Engineers Maint Bldg Coloma · Waushara County |
25 | 0 | 0 | |
|
Orchard Hill Assembly of God Mukwonago · Walworth County |
25 | 0 | 0 | |
|
Organique Clinic Spa Cafe Tomahawk · Lincoln County |
25 | 0 | 0 | |
|
Organized Chaos Shell Lake · Washburn County |
25 | 0 | 0 | |
|
Osborn Town Hall Seymour · Outagamie County |
25 | 0 | 0 | |
|
Osceola Community Church Osceola · Polk County |
25 | 0 | 0 | |
|
Osceola Rod & Gun Club Osceola · Polk County |
25 | 0 | 0 | |
|
Oshkosh Country Club Pool Area Oshkosh · Winnebago County |
25 | 0 | 0 | |
|
Oshvegas Palms Resort Oshkosh · Winnebago County |
25 | 0 | 0 | |
|
Osseo Cenex Osseo · Eau Claire County |
25 | 0 | 0 | |
|
Osseo Community Church Osseo · Trempealeau County |
25 | 1 | 1 | |
|
Osseo Junior Baseball & Softball Park Osseo · Trempealeau County |
25 | 0 | 0 | |
|
Osseo Merchants Baseball Park Osseo · Trempealeau County |
25 | 0 | 0 | |
|
Otter Bay Cable · Bayfield County |
25 | 0 | 0 | |
|
Otter Creek Christian Fellowship Wheeler · Dunn County |
25 | 0 | 0 | |
|
Otter Lake Bait Shop and Camp Store Stanley · Chippewa County |
25 | 0 | 0 | |
|
Otter Springs Bar Bowler · Shawano County |
25 | 0 | 0 | |
|
Otter Springs Cmpgd Bowler · Shawano County |
25 | 0 | 0 | |
|
Otter Springs Mobile Homes Bowler · Shawano County |
25 | 0 | 0 | |
|
Ottery Transportation Campbellsport · Fond du Lac County |
25 | 0 | 0 | |
|
Otto Finell Memorial Park Lake Nebagamon · Douglas County |
25 | 0 | 0 | |
|
Oulu Pioneer Memorial Park Iron River · Bayfield County |
25 | 0 | 0 | |
|
Our Lady of Lourdes Church and Office Rice Lake · Barron County |
25 | 0 | 0 | |
|
Our Lady of the Lake Cath CH Mauston · Juneau County |
25 | 0 | 0 | |
|
Our Redeemer Lutheran CH Maple Valley Tn · Oconto County |
25 | 0 | 0 | |
|
Our Savior Free Lutheran Church Mason · Bayfield County |
25 | 1 | 1 | |
|
Our Saviors Lutheran Church Solon Springs · Douglas County |
25 | 0 | 0 | |
|
Our Saviors Lutheran Church Campia · Barron County |
25 | 0 | 0 | |
|
Our Shepherd Ucc Howards Grove · Sheboygan County |
25 | 0 | 0 | |
|
Outagamie Conservation Club Hortonville · Outagamie County |
25 | 0 | 0 | |
|
Outback Bar Peshtigo Tn · Marinette County |
25 | 3 | 1 | |
|
Outer Limits Bar Green Bay · Brown County |
25 | 1 | 0 | |
|
Outpost Mall Siren · Burnett County |
25 | 0 | 0 | |
|
Outpost Northwoods Coffee and Gifts Trego · Washburn County |
25 | 0 | 0 | |
|
Outpost the Presque Isle · Vilas County |
25 | 0 | 0 | |
|
Outskirtz Saloon New Franken · Brown County |
25 | 0 | 0 | |
|
Owl Tavern Lake Geneva · Walworth County |
25 | 0 | 0 | |
|
OX Bow Sportsmen Club Hilbert · Calumet County |
25 | 0 | 0 | |
|
OX Bow Tavern Clintonville · Shawano County |
25 | 0 | 0 | |
|
Oxbo Resort Park Falls · Sawyer County |
25 | 1 | 1 | |
|
Oxford Pub and Grill Oxford · Marquette County |
25 | 1 | 0 | |
|
Oxford Travel Plaza Citgo Oxford · Marquette County |
25 | 2 | 1 | |
|
Ozaukee CO Fish & Game Fredonia · Ozaukee County |
25 | 0 | 0 | |
|
P JS Sturgeon Bay · Door County |
25 | 0 | 0 | |
|
Pack IT in Pub Tilleda · Shawano County |
25 | 3 | 1 | |
|
Pagacs Bar Ashland · Bayfield County |
25 | 0 | 0 | |
|
Paganica Golf Course Oconomowoc · Waukesha County |
25 | 0 | 0 | |
|
Painted Pelican Restaurant Dyckesville · Brown County |
25 | 1 | 1 | |
|
Painted Pelican the Dyckesville · Brown County |
25 | 0 | 0 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules currently in violation at EPA's latest data refresh.
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.