Water quality for ZIP code 61103
ZIP 61103 covers Rockford and Machesney Park in Winnebago County, Illinois, one of 20 ZIP codes in the county. 195 active public water systems serve the county; 121 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 Winnebago County
27 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| River City Mhc, LLC Machesney Park |
83 | 2 | 3.7 mi | |
| Loves Park Loves Park |
23,335 | 1 | 3.7 mi | |
| North Park Pwd Machesney Park |
35,580 | 0 | 4.4 mi | |
| Bradley Heights Subdivision Rockford |
82 | 0 | 5.7 mi | |
| Prairie Road Pump Corporation Rockford |
150 | 3 | 7.0 mi | |
| Clarks MHP Rockford |
90 | 2 | 7.2 mi | |
| Phil-Aire Estates MHP Rockton |
80 | 3 | 7.5 mi | |
| Rockton Rockton |
7,863 | 2 | 7.8 mi | |
| IL American-Wildwood Rockford |
490 | 1 | 8.4 mi | |
| Winnebago Winnebago |
2,940 | 0 | 8.5 mi | |
| IL American-Coventry Hill |
608 | 0 | 8.8 mi | |
| Rockford Mhc, LLC Rockford |
240 | 3 | 9.0 mi | |
| Cherry Valley Cherry Valley |
4,731 | 2 | 9.3 mi | |
| Legend Lakes Water Association Roscoe |
250 | 0 | 9.8 mi | |
| IL American-Coventry Creek |
270 | 0 | 10.0 mi | |
| IL American-South Beloit South Beloit |
7,893 | 0 | 10.1 mi | |
| South Bluff MHP South Beloit |
507 | 1 | 10.4 mi | |
| Northgate Estates MHP South Beloit |
100 | 2 | 10.4 mi | |
| IL American-Westlake Loves Park |
1,493 | 1 | 10.6 mi | |
| Mancuso Village Park MHP New Millford |
325 | 1 | 11.5 mi | |
| Aqua Illinois-Sheridan Grove |
100 | 1 | 11.7 mi | |
| Durand Durand |
1,427 | 2 | 13.9 mi | |
| Pecatonica Pecatonica |
2,195 | 0 | 14.0 mi | |
| Six Oaks MHP |
48 | 1 | 14.2 mi | |
| Otter Creek Lake Utilities District Loves Park |
2,342 | 1 | 17.7 mi |
Non-community systems in Winnebago County (167: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Winnebago 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 Illinois 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.