Wisconsin

Dunn County drinking water quality

87 active public water systems serve 26,212 people in Dunn County. 76 are compliant, 11 had at least one EPA violation in the past three years, 0 are designated serious violators, and 1 carries a health flag.

Active systems 87 14 community systems

People served 26K by public water systems

Systems with violations 11 13% of active systems, past 3 years

Serious violators 0 1 systems carry a health flag

Needs attention

Wheeler Waterworks Assoc WI6170274 · Wheeler · Community water system · Serves 317 5 rules violated in the past three years. Unresolved: 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene, 1,2,4-Trichlorobenzene, 1,2-Dichloroethane, 1,2-Dichloropropane, Benzene, Carbon Tetrachloride, Chlorobenzene, Combined Radium (-226 and -228), Combined Uranium, Dichloromethane (Methylene Chloride), Ethylbenzene, Gross Alpha, Excl. Radon and U, Lead and Copper Rule Revisions (LCRR), Public Notification Rule, Radium-226, Radium-228, Styrene, Tetrachloroethylene (PCE), Toluene, Trichloroethylene (TCE), Vinyl Chloride, Xylenes, Total, cis-1,2-Dichloroethylene, o-Dichlorobenzene, p-Dichlorobenzene, and trans-1,2-Dichloroethylene.

Community water systems

14 systems, largest first

System	Serves	Rules violated, 3 yr	Unresolved
Menomonie Waterworks Menomonie	15,950	0	0
Colfax Waterworks Colfax	1,102	0	0
Boyceville Waterworks Boyceville	1,043	2	1
Elk Mound Waterworks Elk Mound	895	0	0
Birch Terrace Mobile Home Community Menomonie	700	0	0
Knapp Waterworks Knapp	486	2	0
Wheeler Waterworks Assoc Wheeler	317	5	2
Downsville Sanitary District Downsville	250	1	0
Marell Country Estates Elk Mound	150	1	0
Cedar Falls Acres MHP Menomonie	95	1	0
Tainter Woods Condominiums Colfax	85	2	1
River Villa Mobile Home Court Menomonie	60	0	0
Countryside Mobile Homes Menomonie	50	2	1
Shady Oaks MHP Menomonie	40	4	3

Non-community systems (73: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

System	Serves	Rules violated, 3 yr
Synergy Cooperative Ridgeland Ridgeland	475	0
Rock Falls Raceway Main Bldg Eau Claire	410	0
Buttons Bakery & Boutique Mondovi	301	0
Rock Falls Raceway North Concessions Eau Claire	300	0
Kyotes Den Menomonie	250	0
Synergy Cooperative Sand Creek Sand Creek	175	0
ST Henry's Catholic Church Eau Galle	151	0
Pinewood Golf Course Menomonie	150	0
Synergy Cooperative Hardware Ridgeland Ridgeland	150	0
Vino Cappuccino Artisan Bistro Elk Mound	105	0
Dairyland Cafe Ridgeland	100	0
Elk Mound Village Park Pavilion Elk Mound	100	0
Grain Bin Butchery & Market, LLC the Boyceville	100	0
Little Elk Creek Lutheran Church Menomonie	100	0
Sportsmens Bar & Grill Ridgeland	100	0
Elk Point Resort Tavern Colfax	60	0
Rock Creek Lutheran Church Mondovi	60	0
Backwoods Bar Menomonie	50	0
Birds Place LLC Ridgeland	50	0
Blind Spot the Boyceville	50	0
Faith Evangelical Free Church Boyceville	50	0
Grandpa Joes Trailside Menomonie	50	0
Hmong Menomonie Alliance Church Menomonie	50	0
Little Midway INC Downing	50	0
Myron Park Chetek	50	0
Pioneer Grill & Saloon Menomonie	50	0
Skate Ranch the Menomonie	50	0
Tainter United Methodist Church Colfax	50	0
Tanglewood Greens LLC Menomonie	50	0
Twin Springs Campground LLC Menomonie	50	0
Nedland Industries Ridgeland	45	0
West Akers Lutheran Church Prairie Farm	45	0
Barum Lutheran Church Elk Mound	40	0
Jeremiahs Bullfrog Fish Farm Menomonie	40	0
New Hope Lutheran Church-Sand Creek Sand Creek	40	0
Seventh Day Adventist Church Menomonie	40	0
Big River Resources Boyceville LLC Boyceville	37	0
Holden Lutheran Church Colfax	35	0
New Hope Lutheran Church-Pine Creek Ridgeland	35	0
B & B Weston Bar & Grill Menomonie	30	0
Colfax Sportsmens Club Colfax	30	0
Dunn Energy Coop Menomonie	30	1
Eau Galle Saloon and Grille LLC Eau Galle	30	0
Hay River Lutheran Church Wheeler	30	0
Menomonie Rifle and Pistol Club Menomonie	30	0
Ridgeland Village Park Ridgeland	30	0
Rock Falls Baptist Church Mondovi	30	0
ST Josephs Catholic Church Mondovi	30	0
Brothers Country Mart Downing	25	0
Calvary Christian School Boyceville	25	0
Church of Nazarene Forest Center Menomonie	25	0
Coates Corner Mkt Deli and Bakery Ridgeland	25	0
Consuming Fire Ridgeland	25	0
Dollar General Store #20469 Ridgeland	25	0
Dollar General Store #30538 Wheeler	25	0
Downsville Snow Drifters Menomonie	25	0
Drunk N Monkey Ridgeland	25	0
Dunn CO Caddie Woodlawn Park Menomonie	25	0
Elk Mound Store LLC Elk Mound	25	0
Grace Episcopal Church Menomonie	25	0
Jakes Supper Club Menomonie	25	0
Kingdom Hall of Jehovahs Witnesses Menomonie	25	0
Luers Grocery Eau Claire	25	0
Mas Irvington Cmpgd and Rentals LLC Menomonie	25	0
Mill & CO the Mondovi	25	0
Otter Creek Christian Fellowship Wheeler	25	0
Pumphouse, the Downing	25	0
Sand Creek Cafe & Bakery Sand Creek	25	0
Too Mixed UP Wheeler	25	0
Whispering Emerald Ridge Game Farm Club House Menomonie	25	0
Whitetail Golf Colfax	25	0
WI Dnr Chippewa River TR Rest Area-Caryville Rock Falls	25	0
WI Dnr Hoffman Hills Picnic Area Menomonie	25	2

Inactive systems (87, no longer operating or reporting)

Kept for the record and excluded from the county totals above. Browse inactive systems.

About this data

Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.

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. Retrieved from ECHO on Oct 11, 2026.

Dunn County drinking water quality

Needs attention

Community water systems

Compliant

Violations in the past 3 years

Serious violator

Health flag

Inactive system