Oconomowoc, Wisconsin Water Violations

75 water systems serve Oconomowoc, Wisconsin, providing drinking water to an estimated 29,227 people. These systems have 11 health-based violations on record, meaning contaminant levels exceeded EPA maximum contaminant levels (MCLs) or required treatment standards were not met.

Select a water system below to see its full violation history, lead and copper testing results, and compliance status.

Water SystemPopulation ServedSourceViolationsHealth-Based
7-Eleven 35845 103 Groundwater 6 4
Mapleway Bowl & Restaurant 100 Groundwater 4 3
Kennys 27 Groundwater 2 2
Ewald Soccer Field Complex 201 Groundwater 10 1
Lake Drive Water Trust 500 Groundwater 3 1
Millers Sandy Beach 25 Groundwater 14 0
Holy Trinity Church & Learning Center 505 Groundwater 9 0
Abundant Life Apostolic Church 543 Groundwater 8 0
Kiltie Inc 200 Groundwater 8 0
Oconomowoc Waterworks 15,805 Groundwater 6 0
Sunnyfield Acres 300 Groundwater 5 0
Genesee Lake School South 230 Groundwater 5 0
Genesee Lake School North 110 Groundwater 5 0
Oconomowoc Golf Club Restrooms 54 Groundwater 3 0
Brown Street Market Place 384 Groundwater 2 0
Rogers Mem Hosp - Main Hospital 220 Groundwater 2 0
Brown Street Mall 48 Groundwater 2 0
Olin-Sang-Ruby Union Institute - Dining Hall 700 Groundwater 1 0
Dotties Home Bakery & Liquor 567 Groundwater 1 0
Stone Bank School 470 Groundwater 1 0
Rogers Mem Hosp - Delafield 16 Bed 30 Groundwater 1 0
Rogers Mem Hosp - Delafield 8 Bed 27 Groundwater 1 0
Silver Lake Auto Center 26 Groundwater 1 0
Kwik Trip 360 Oconomowoc 906 Groundwater 0 0
Concord General Store 807 Groundwater 0 0
Cross Point Community Church 764 Groundwater 0 0
Olin-Sang-Ruby Union Institute - Main System 704 Groundwater 0 0
Olin-Sang-Ruby Union Institute - Bath House 700 Groundwater 0 0
Hope Lake Country Church 511 Groundwater 0 0
Lord of Life Lutheran Church 302 Groundwater 0 0
Lake Area Alano Club 300 Groundwater 0 0
Little Dumplings Early Learning Center 258 Groundwater 0 0
Grace Bible Church 205 Groundwater 0 0
White Stone Community Church 144 Groundwater 0 0
St Johns Lutheran Church 126 Groundwater 0 0
La Bell Golf Club 120 Groundwater 0 0
St Johns Evangelical Lutheran Church 119 Groundwater 0 0
Stolleys Hogg Alley 108 Groundwater 0 0
Associated Bank of Oconomowoc 104 Groundwater 0 0
Western Waukesha County Dog Training Club 100 Groundwater 0 0
Oconomowoc Lake Club 100 Groundwater 0 0
Lucky Chuckys Beach Bar and Grill 95 Groundwater 0 0
Angels Grace Hospice 90 Groundwater 0 0
The Happy Place 79 Groundwater 0 0
Kuhtz General Store 78 Groundwater 0 0
Emmanuel United Church of Christ 77 Groundwater 0 0
Bank Five Nine - Brown Street 70 Groundwater 0 0
Rogers Mem Hosp - Kubly 61 Groundwater 0 0
Rogers Mem Hosp - Cedar Ridge Main 61 Groundwater 0 0
Oconomowoc Retail Center 60 Groundwater 0 0
Hallett Veterinary Hospital 57 Groundwater 0 0
Oconomowoc Golf Club Clubhouse 55 Groundwater 0 0
Deertrak Golf Club 54 Groundwater 0 0
Kims Pizza Pub 53 Groundwater 0 0
Hideaway Bar & Grill 53 Groundwater 0 0
Faith Baptist Church - Oconomowoc 52 Groundwater 0 0
Private Party Inn 50 Groundwater 0 0
Panga Bar & Grill 50 Groundwater 0 0
Oconomowoc Lakes Plaza 47 Groundwater 0 0
Premold Corporation 46 Groundwater 0 0
Rogers Mem Hosp - Hrc 45 Groundwater 0 0
Brewfinity Brewing Co 45 Groundwater 0 0
Rogers Mem Hosp - Ladish Co Foundation Center 40 Groundwater 0 0
Caddy Shack 36 Groundwater 0 0
Lake Country Nissan 35 Groundwater 0 0
Hyundai Lake Country 35 Groundwater 0 0
Redemptorist Retreat Center 34 Groundwater 0 0
Oconomowoc Golf Course Maintenance Building 32 Groundwater 0 0
Oles 31 Groundwater 0 0
St Catherines Church 27 Groundwater 0 0
Golden Lake Pub 26 Groundwater 0 0
Olin-Sang-Ruby Union Institute - Pool Well 25 Groundwater 0 0
Paganica Golf Course 25 Groundwater 0 0
Oconomowoc Town Hall 25 Groundwater 0 0
Lake Country Trail - West 25 Groundwater 0 0