Water quality for ZIP code 53021
ZIP 53021 covers Fredonia and Waubeka in Ozaukee County, Wisconsin, one of 8 ZIP codes in the county. 250 active public water systems serve the county; 62 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Ozaukee County
47 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Linden Lane Apts 117 Thiensville |
90 | 0 | 7.4 mi | |
| Belgium Waterworks Belgium |
2,493 | 2 | 8.1 mi | |
| Saukville Waterworks Saukville |
4,268 | 0 | 8.3 mi | |
| Port Washington Waterworks Port Washington |
12,853 | 1 | 9.6 mi | |
| PW Lake View Estates LLC Port Washington |
30 | 1 | 9.8 mi | |
| Osprey Mobile Home Park Grafton |
150 | 2 | 12.4 mi | |
| Stonecroft Condominium Assn Grafton |
50 | 2 | 12.4 mi | |
| Grafton Waterworks Grafton |
12,269 | 0 | 12.5 mi | |
| Cedarburg L & W Commission Cedarburg |
12,500 | 0 | 13.4 mi | |
| Mequon Trail Townhomes Mequon |
615 | 2 | 16.4 mi | |
| Concordia University Mequon |
1,500 | 2 | 16.5 mi | |
| Highland Colony Estates Condo Mequon |
88 | 0 | 17.0 mi | |
| Mequon Colony Estates Mequon |
75 | 2 | 17.4 mi | |
| Waters Edge Condominium Association Thiensville |
50 | 1 | 17.5 mi | |
| Alberta Subdivision Thiensville |
75 | 1 | 17.5 mi | |
| Heidel RD Apts 139 Thiensville |
40 | 3 | 17.6 mi | |
| Laurel Lakes 608 Thiensville |
80 | 2 | 17.6 mi | |
| Heidel RD Apts 152 Thiensville |
40 | 2 | 17.6 mi | |
| Laurel Lakes 508 Thiensville |
50 | 2 | 17.7 mi | |
| Century Estates 1 Thiensville |
130 | 0 | 17.7 mi | |
| Grand Ave Apartments Thiensville |
80 | 0 | 17.8 mi | |
| Linden Lane Apts 141 Thiensville |
75 | 2 | 17.9 mi | |
| Woodridge Estates Mequon |
100 | 3 | 17.9 mi | |
| River Garden Apts Thiensville |
25 | 4 | 17.9 mi | |
| Village Glen Apts Thiensville |
30 | 0 | 18.0 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, the county this ZIP code lies in, nearest to the ZIP code's centre 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.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA 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.