Tapcensus

Wisconsin

Vernon County drinking water quality

67 active public water systems serve 16,834 people in Vernon County. 50 are compliant, 17 had at least one EPA violation in the past three years, 0 are designated serious violators, and 1 carries a health flag.

Active systems 67 14 community systems
People served 17K by public water systems
Systems with violations 17 25% of active systems, past 3 years
Serious violators 0 1 systems carry a health flag

Needs attention

Genoa Waterworks WI6630254 · Genoa · Community water system · Serves 264 4 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions (LCRR) and Public Notification Rule.

Community water systems

14 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
Viroqua Waterworks
Viroqua 		4,362 0 0
Westby Waterworks
Westby 		2,400 3 1
Hillsboro Waterworks
Hillsboro 		1,325 1 0
Stoddard Waterworks
Stoddard 		793 3 1
Coon Valley Waterworks
Coon Valley 		765 2 1
LA Farge Waterworks
La Farge 		712 0 0
Viola Waterworks
Viola 		667 2 0
Ontario Waterworks
Ontario 		554 4 1
Readstown Waterworks
Readstown 		395 3 0
Chaseburg Waterworks Village of
Chaseburg 		306 0 0
Genoa Waterworks
Genoa 		264 4 2
Edgewood Mobile Home Park
Genoa 		90 6 1
Marell Courts and Rentals LLC
Hillsboro 		60 0 0
Pine Crest Resort 2-Upper Well
De Soto 		51 0 0
Non-community systems (53: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
DE Soto High-Middle School
De Soto 		403 0 0
Kickapoo Corners Family Restaurant
Readstown 		400 0 0
End of Trail Horse Camp
Ontario 		300 0 0
Trail Ridge Ranch Cafeteria
Hillsboro 		175 0 0
Kickapoo Kwik Stop
Readstown 		150 1 0
Prairie View Elementary School
De Soto 		150 1 1
Treetop View LLC
Westby 		121 0 0
Black Hawk Park-1989 Well
De Soto 		100 0 0
Bright Spot
De Soto 		100 0 0
DE Soto Lutheran Church
De Soto 		100 0 0
Kickapoo Creekside
Readstown 		100 0 0
MT Pisgah Wesleyan Church
Ontario 		100 0 0
Pikes Den
De Soto 		100 0 0
Southwest Prairie Lutheran
Viroqua 		100 0 0
WI Dnr Wildcat MT Horse Camp
Ontario 		100 0 0
WI Dnr Wildcat MT New Main Well
Ontario 		100 0 0
Bad Axe Lutheran Church
Viroqua 		90 0 0
Kids at Play Child Care Center
Stoddard 		85 1 0
Black Hawk Park-1961 Well
De Soto 		75 1 0
Living Waters Bible CP Dining Hall
Westby 		75 0 0
Middle Coon Valley Lutheran Church
Chaseburg 		75 0 0
Mississippi Sports & Recreation
De Soto 		75 3 0
North Coon Prairie Luth Church
Westby 		70 0 0
Liberty Pole Methodist
Viroqua 		65 0 0
Lower Coon Valley Lutheran Church
Stoddard 		50 0 0
New Hope United Methodist Church
Desoto 		50 0 0
Pine Crest Resort 1
Genoa 		41 0 0
Great River Road House
De Soto 		40 0 0
Ohenrys Cmpgd Upper Well
Genoa 		40 0 0
Rockton Bar
La Farge 		40 0 0
WI Dnr Wildcat MT Group Camp
Ontario 		38 0 0
Genoa National Fish Hatchery Interpretive Center
Genoa 		30 1 0
Hickory Hill Motel
Viroqua 		30 0 0
Redmound Country Store
Desoto 		30 0 0
Township Bowl
Hillsboro 		30 0 0
Vang Lutheran Church
Westby 		30 0 0
Vernon CO 5 Rentz Memorial PK Esofea
Viroqua 		30 0 0
Old Country Cheese
Cashton 		27 0 0
Franklin Lutheran Church
Soldiers Grove 		25 0 0
Kickapoo Lutheran Church
Soldiers Grove 		25 0 0
Kickapoo Valley Reserve
La Farge 		25 1 0
Liberty Bar
Viola 		25 0 0
Living Waters Bible CP Maint Well
Westby 		25 0 0
Ohenrys Cmpgd Lower Well
Genoa 		25 0 0
Retreat Community Sportsmans Club
De Soto 		25 0 0
Sugar Grove Church of Christ
Soldiers Grove 		25 0 0
Trail Ridge Ranch Pumphouse
Hillsboro 		25 0 0
Vernon CO Battle Island Concession Stand
De Soto 		25 0 0
Vernon CO Sidie Hollow PK Office Lwr Cpgd
Viroqua 		25 0 0
Vernon CO Sidie Hollow Pk-Boat Lndg
Viroqua 		25 0 0
Vernon CO Sidie Hollow Pk-Upper Cmpgrd
Viroqua 		25 0 0
Vernon CO Wayside Park
Viroqua 		25 1 0
Viroqua Country Club
Viroqua 		25 0 0
Inactive systems (67, 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.