All water systems in Wisconsin
9,089 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Maple Town Hall Maple · Douglas County |
25 | 0 | 0 | |
|
Maple Valley Comm CH Maple Valley Tn · Oconto County |
25 | 1 | 0 | |
|
Mapleview Cmpgd Kewaunee · Kewaunee County |
25 | 0 | 0 | |
|
Maranatha Baptist CH Navarino · Shawano County |
25 | 1 | 0 | |
|
Marathon Feed INC Marathon · Marathon County |
25 | 0 | 0 | |
|
Marchants Super Value Brussels · Door County |
25 | 1 | 0 | |
|
Maribel Caves County Park Maribel · Manitowoc County |
25 | 0 | 0 | |
|
Maribel Sportsman Club Maribel · Manitowoc County |
25 | 0 | 0 | |
|
Marine Corps League Bingo Oshkosh · Winnebago County |
25 | 0 | 0 | |
|
Marinette CO PK Camp Bird Youth Center Stephenson Tn · Marinette County |
25 | 0 | 0 | |
|
Marinette CO PK Daves Falls Amberg Tn · Marinette County |
25 | 0 | 0 | |
|
Marinette CO PK Goodman Camp Area Silver Cliff Tn · Marinette County |
25 | 0 | 0 | |
|
Marinette CO PK Goodman Main Silver Cliff Tn · Marinette County |
25 | 0 | 0 | |
|
Marinette CO PK LK Noquebay Bathhouse Lake Tn · Marinette County |
25 | 0 | 0 | |
|
Marinette CO PK McClintock Cmpgd Silver Cliff Tn · Marinette County |
25 | 0 | 0 | |
|
Marinette CO PK McClintock Picnic Silver Cliff Tn · Marinette County |
25 | 0 | 0 | |
|
Marinette CO PK Menominee River Wagner Tn · Marinette County |
25 | 0 | 0 | |
|
Marinette CO PK Morgan Cmpgd Shower Bldg Niagara Tn · Marinette County |
25 | 0 | 0 | |
|
Marinette CO PK Morgan Lodge Niagara Tn · Marinette County |
25 | 0 | 0 | |
|
Marinette CO PK Twelve FT Falls Dunbar Tn · Marinette County |
25 | 0 | 0 | |
|
Marinette Moose Lodge Porterfield Tn · Marinette County |
25 | 0 | 0 | |
|
Marinette Shell Peshtigo Tn · Marinette County |
25 | 0 | 0 | |
|
Mark the Denmark · Brown County |
25 | 0 | 0 | |
|
Markesan City of Soldiers & Sailors Park Markesan · Green Lake County |
25 | 0 | 0 | |
|
Market Beautiful Solon Springs · Douglas County |
25 | 0 | 0 | |
|
Markos Smoking Bbq LLC Collins · Manitowoc County |
25 | 0 | 0 | |
|
Marks Sheridan Country Club Waupaca · Waupaca County |
25 | 0 | 0 | |
|
Marquette CO Parks Muir Well Westfield · Marquette County |
25 | 1 | 0 | |
|
Mars Cheese Castle New Bldg Kenosha · Kenosha County |
25 | 0 | 0 | |
|
Marsh Haven Nature Center INC Waupun · Fond du Lac County |
25 | 1 | 1 | |
|
Marsh Inn Bar Reedsville · Manitowoc County |
25 | 0 | 0 | |
|
Marshalls Hide-A-Way Bar Sturgeon Bay · Door County |
25 | 0 | 0 | |
|
Marshfield School Forest Marshfield · Wood County |
25 | 0 | 0 | |
|
Marshs View Point Resort Gordon · Douglas County |
25 | 0 | 0 | |
|
Marytown Community Athletic Club New Holstein · Fond du Lac County |
25 | 0 | 0 | |
|
Marytown Tap New Holstein · Fond du Lac County |
25 | 0 | 0 | |
|
Mas Irvington Cmpgd and Rentals LLC Menomonie · Dunn County |
25 | 0 | 0 | |
|
Maslowski Beach Bathrooms Ashland · Ashland County |
25 | 0 | 0 | |
|
Maslowski Beach East Ashland · Ashland County |
25 | 0 | 0 | |
|
Maslowski Beach Wishing Well Ashland · Ashland County |
25 | 0 | 0 | |
|
Mason Jar the Mason · Bayfield County |
25 | 0 | 0 | |
|
Mason Village Park Hand Pump Mason · Bayfield County |
25 | 0 | 0 | |
|
Materos Pub & Pizzeria Custer · Portage County |
25 | 1 | 1 | |
|
Mattoon CH of the Nazarene Mattoon · Shawano County |
25 | 0 | 0 | |
|
Mattoon Sportsman Club Park Mattoon · Shawano County |
25 | 0 | 0 | |
|
Maxi One Mini-Mart Delavan · Walworth County |
25 | 0 | 0 | |
|
McCaslin Mountain Cmpgd Hill Silver Cliff Tn · Marinette County |
25 | 0 | 0 | |
|
McCaslin Mountain Cmpgd Site 209 Silver Cliff Tn · Marinette County |
25 | 1 | 1 | |
|
McCaslin Mountain Cmpgd Site 28 Silver Cliff Tn · Marinette County |
25 | 0 | 0 | |
|
McCaslin Mountain Cmpgd Tent Silver Cliff Tn · Marinette County |
25 | 1 | 1 |
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.