Water quality in Butler, Wisconsin
Butler is in Waukesha County. 589 active public water systems serve the county; 108 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Waukesha County
72 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Menomonee Falls WW Surface Water Menomonee Falls |
23,867 | 0 | 3.3 mi | |
| Menomonee Falls WW Groundwater Menomonee Falls |
1,796 | 0 | 3.9 mi | |
| Brookfield Water Utility Brookfield |
29,070 | 2 | 4.1 mi | |
| Squires Grove Elm Grove |
410 | 3 | 4.2 mi | |
| Marian Heights Subdivision Elm Grove |
400 | 1 | 4.2 mi | |
| Emerald Woods Condos Elm Grove |
150 | 2 | 4.2 mi | |
| Elm Grove Terrace Elm Grove |
75 | 0 | 4.2 mi | |
| Carriage Hills Condominiums Elm Grove |
50 | 4 | 4.2 mi | |
| Douglas Plaza North Elm Grove |
30 | 4 | 4.2 mi | |
| Lannon Water Utility Lannon |
172 | 2 | 5.1 mi | |
| Country Court Subdivision Pewaukee |
45 | 0 | 5.5 mi | |
| Willow Springs MHP 2 & 3 Sussex |
446 | 0 | 6.2 mi | |
| Douglas Plaza South Elm Grove |
62 | 3 | 6.5 mi | |
| Town of Brookfield San Dist 4 Brookfield |
6,419 | 1 | 7.2 mi | |
| Sussex Village Hall & Water Utility Sussex |
11,750 | 2 | 7.6 mi | |
| Pewaukee City Water and Sewer Utility Pewaukee |
8,671 | 2 | 7.7 mi | |
| New Berlin Water Utility New Berlin |
27,899 | 1 | 8.9 mi | |
| Pewaukee Village Waterworks Pewaukee |
8,166 | 2 | 9.9 mi | |
| Lake Country Apartments Delafield |
84 | 2 | 10.0 mi | |
| Schoenstatt Sisters of Mary Waukesha |
80 | 0 | 11.1 mi | |
| Oakton Beach Pewaukee |
144 | 1 | 11.1 mi | |
| Waukesha Water Utility Waukesha |
70,718 | 2 | 11.1 mi | |
| Hale Park Meadows Muskego |
720 | 1 | 12.8 mi | |
| Stoney Creek Adult Community Muskego |
95 | 0 | 12.9 mi | |
| Durham Meadows Water Trust Muskego |
700 | 0 | 13.1 mi |
Non-community systems in Waukesha County (516: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Waukesha County, nearest to Butler first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
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.