Mequon, Wisconsin Water Violations

108 water systems serve Mequon, Wisconsin, providing drinking water to an estimated 30,419 people. These systems have 18 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
Mequon Office Complex 11516 Bldg 100 Groundwater 11 8
Pines Subdivision 200 Groundwater 13 2
Mequon Umc & North Shore Preschool 174 Groundwater 51 1
Mequon Trail Townhomes 615 Groundwater 15 1
River Trails Estates Water Users 84 Groundwater 11 1
Mequon Water Trust 26 Groundwater 10 1
Mcdonalds Mequon 1,524 Groundwater 8 1
Vintage Estates 130 Groundwater 4 1
Norscot Group Inc 100 Groundwater 1 1
Range Line Inn 75 Groundwater 1 1
Homestead Hs Pavilion 125 Groundwater 68 0
Mequon Colony Estates 75 Groundwater 21 0
Homestead High School 1,650 Groundwater 14 0
Westchester Lakes Subdivision 300 Groundwater 13 0
River Lake Subdivision 100 Groundwater 12 0
Christian Life Church & Kids Rule Academy 210 Groundwater 10 0
Mequon Parc Apartments LLC 60 Groundwater 9 0
Ravine Farms Hm Owners Assoc 100 Groundwater 8 0
Huntington Park 600 Groundwater 7 0
Woodridge Estates 100 Groundwater 6 0
Lakeside Development East & West Bldgs 88 Groundwater 6 0
Wyngate Subdivision 100 Groundwater 5 0
Daystar Properties 80 Groundwater 5 0
Mequon Water Utility 11,152 Surface Water Purchased 4 0
Mequon on the Square Condominium Owners Association Inc 110 Groundwater 4 0
Concordia University 1,500 Groundwater 3 0
Beechwood Farms Estates 300 Groundwater 3 0
Riversite 250 Groundwater 3 0
Brighton Ridge Subdivision 200 Groundwater 3 0
Center for Jewish Life 200 Groundwater 3 0
River Centre East Well 199 Groundwater 3 0
Donges Bay 5401 95 Groundwater 3 0
Highland Colony Estates Condo 88 Groundwater 3 0
Genmet Corp 65 Groundwater 3 0
Skygen USA 64 Groundwater 3 0
Snider Mold Co 35 Groundwater 3 0
Roettgers Oil Mequon 27 Groundwater 3 0
Hb Performance Systems Inc 315 Groundwater 2 0
Park Place Subdivision 260 Groundwater 2 0
Trinity Ev Lutheran School & Church - Freistadt 250 Groundwater 2 0
North Shore Soccer United 120 Groundwater 2 0
New World Montessori School 96 Groundwater 2 0
Crossroads Presbyterian Church & Preschool 86 Groundwater 2 0
Granite Microsystems 70 Groundwater 2 0
Galleria Offices 55 Groundwater 2 0
Wulffs Island Sybaris Motel 48 Groundwater 2 0
North Shore Dental 32 Groundwater 2 0
St Boniface Episcopal Church 28 Groundwater 2 0
North Shore Country Club Restroom 25 Groundwater 2 0
Haddonstone Subdivision 195 Groundwater 1 0
Hahn Ace 190 Groundwater 1 0
Country Terrace Condo Homes 160 Groundwater 1 0
River Centre West Well 135 Groundwater 1 0
Yellow Rock Real Estate 135 Groundwater 1 0
East Towne Square 1340 130 Groundwater 1 0
Christ Alone South Campus 92 Groundwater 1 0
Mequon Retail II LLC 75 Groundwater 1 0
North Shore Preschool & Child Care 72 Groundwater 1 0
Dp Properties 65 Groundwater 1 0
River Oaks of Mequon 46 Groundwater 1 0
Walgreens in Mequon 912 Groundwater 0 0
Christ Church Mequon 600 Groundwater 0 0
Missing Links Golf Range 502 Groundwater 0 0
Alliance Bible Church 457 Groundwater 0 0
River Barn Park 450 Groundwater 0 0
Glen Oaks Office Park 400 Groundwater 0 0
J Mobil Mequon 304 Groundwater 0 0
Kingdom Hall Jehovahs Witnesses - Mequon 300 Groundwater 0 0
Reuter Pavilion 250 Groundwater 0 0
The Highland House 205 Groundwater 0 0
Virmond Park 200 Groundwater 0 0
Unitarian Church North 155 Groundwater 0 0
Mee Kwon Park Clubhouse 154 Groundwater 0 0
Kenilworth Subd 120 Groundwater 0 0
US Bank Mequon 115 Groundwater 0 0
Homeplate Asylum 103 Groundwater 0 0
Jorgensen Conveyors Inc 100 Groundwater 0 0
Mequon Office Complex 11514 Bldg 100 Groundwater 0 0
Bella Via Dance Studio 100 Groundwater 0 0
Bel Mar Offices I & II 99 Groundwater 0 0
Rays Mequon LLC 85 Groundwater 0 0
Super Sky Products Inc 78 Groundwater 0 0
East Field Office Center 56 Groundwater 0 0
New Day Inc 56 Groundwater 0 0
White Rabbit 55 Groundwater 0 0
Merchants Square 52 Groundwater 0 0
Korner Q LLC 52 Groundwater 0 0
Central Bark Doggy Day Care 52 Groundwater 0 0
Lemke Park - City of Mequon 50 Groundwater 0 0
Spankys Hideaway 48 Groundwater 0 0
Concord 1 Fund LLC 48 Groundwater 0 0
Jt Petroleum 48 Groundwater 0 0
Mequon Marketplace Wells Fargo 46 Groundwater 0 0
Wayside Nursery 45 Groundwater 0 0
East Towne Offices Jv 44 Groundwater 0 0
Schmidt & Bartelt Funeral Home 42 Groundwater 0 0
Colour Bowl Salon & Wellness the 40 Groundwater 0 0
Towne Square 123 LLC 33 Groundwater 0 0
Clark Oil Stn 364 N Pt Washington Rd 32 Groundwater 0 0
Fromm Family Foods LLC 30 Groundwater 0 0
Tfb Enterprize Property LLC 30 Groundwater 0 0
Chase Bank-Mequon 30 Groundwater 0 0
Mequon Nature Preserve 29 Groundwater 0 0
Baymont Inn & Suites 29 Groundwater 0 0
East Towne Veterinary Clinic 27 Groundwater 0 0
The Landmark - Mequon 25 Groundwater 0 0
Mee Kwon Park Barn 25 Groundwater 0 0
Mequon Rotary Park 25 Groundwater 0 0