Water quality for ZIP code 53563
ZIP 53563 covers Milton, Janesville, and Lake Koshkonong in Rock County, Wisconsin, one of 13 ZIP codes in the county. 158 active public water systems serve the county; 26 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Rock County
19 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Rock River Leisure Estates Coop Edgerton |
650 | 3 | 5.6 mi | |
| Oakhill Waterworks Edgerton |
130 | 1 | 6.4 mi | |
| Fulton Utility District Edgerton |
200 | 3 | 7.7 mi | |
| County Line Estates Whitewater |
240 | 1 | 7.7 mi | |
| Edgerton Waterworks Edgerton |
5,512 | 2 | 7.8 mi | |
| Janesville Water Utility Janesville |
64,415 | 0 | 8.9 mi | |
| Shady Hill Mobile Home Park Clinton |
140 | 3 | 14.2 mi | |
| Caravilla Education and Rehab Center Janesville |
298 | 4 | 14.4 mi | |
| Rockvale MHP Janesville |
1,200 | 0 | 15.0 mi | |
| Footville Waterworks Footville |
816 | 1 | 16.5 mi | |
| Clinton Waterworks Clinton |
2,119 | 0 | 16.6 mi | |
| Midway Village Mobile Home Park Evansville |
160 | 4 | 17.2 mi | |
| Birchwood Trailer Court Evansville |
32 | 1 | 18.6 mi | |
| Mountain View MHP 2 Evansville |
25 | 1 | 18.6 mi | |
| Evansville Waterworks Evansville |
5,703 | 2 | 18.6 mi | |
| Mountain View MHP 1 Evansville |
50 | 1 | 18.8 mi | |
| Beloit City of Beloit |
36,677 | 1 | 19.3 mi | |
| Orfordville Waterworks Orfordville |
1,475 | 0 | 20.3 mi | |
| Pirates Cove Mobile Home Community Edgerton |
25 | 2 | 25.8 mi |
Non-community systems in Rock County (138: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Rock 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.