Water quality in Mequon, Wisconsin
Mequon is in Ozaukee County. 250 active public water systems serve the county; 62 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 Ozaukee County
47 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| River Lake Subdivision Mequon |
100 | 0 | 0.7 mi | |
| River Trails Estates Water Users Mequon |
84 | 2 | 0.8 mi | |
| River Garden Apts Thiensville |
25 | 4 | 1.4 mi | |
| Village Heights Thiensville |
130 | 2 | 1.4 mi | |
| Century Estates 1 Thiensville |
130 | 0 | 1.4 mi | |
| Williamsburg 206 Thiensville |
48 | 2 | 1.5 mi | |
| Linden Lane Apts 141 Thiensville |
75 | 2 | 1.6 mi | |
| Williamsburg 220 Thiensville |
32 | 0 | 1.6 mi | |
| Grand Ave Apartments Thiensville |
80 | 0 | 1.6 mi | |
| Heidel RD Apts 152 Thiensville |
40 | 2 | 1.6 mi | |
| Village Glen Apts Thiensville |
30 | 0 | 1.7 mi | |
| Alberta Subdivision Thiensville |
75 | 1 | 1.7 mi | |
| Heidel RD Apts 139 Thiensville |
40 | 3 | 1.8 mi | |
| Waters Edge Condominium Association Thiensville |
50 | 1 | 1.9 mi | |
| Laurel Lakes 608 Thiensville |
80 | 2 | 1.9 mi | |
| Westchester Lakes Subdivision Mequon |
300 | 0 | 1.9 mi | |
| Laurel Lakes 508 Thiensville |
50 | 2 | 1.9 mi | |
| Mequon on the Square Condominium Owners Association INC Mequon |
110 | 0 | 2.2 mi | |
| Wyngate Subdivision Mequon |
100 | 0 | 2.4 mi | |
| Mequon Colony Estates Mequon |
75 | 2 | 2.4 mi | |
| Kenilworth Subd Mequon |
120 | 0 | 2.5 mi | |
| Woodridge Estates Mequon |
100 | 3 | 2.6 mi | |
| Huntington Park Mequon |
600 | 0 | 2.7 mi | |
| Pines Subdivision Mequon |
200 | 2 | 2.7 mi | |
| Haddonstone Subdivision Mequon |
195 | 0 | 2.7 mi |
Non-community systems in Ozaukee County (202: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Ozaukee County, nearest to Mequon 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.