Water quality for ZIP code 61233
ZIP 61233 covers Andover in Henry County, Illinois, one of 16 ZIP codes in the county. 80 active public water systems serve the county; 40 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Henry County
40 systems, largest first| System | Serves | Status | Rules violated, 3 yr |
|---|---|---|---|
| Geneseo Geneseo |
6,539 | 0 | |
| Colona West Green Rock |
2,640 | 0 | |
| Colona East Colona |
2,501 | 0 | |
| Galva Galva |
2,449 | 1 | |
| Cambridge Cambridge |
2,086 | 0 | |
| Orion Orion |
1,754 | 4 | |
| Atkinson Atkinson |
955 | 4 | |
| Annawan Annawan |
843 | 1 | |
| Woodhull Woodhull |
771 | 0 | |
| Alpha Alpha |
626 | 0 | |
| Andover Andover |
565 | 1 | |
| Geneseo Hills Subdivision |
500 | 1 | |
| Buysse Subdivision |
380 | 2 | |
| Sunny Hill Estates Subdivision |
375 | 1 | |
| Willow Haven MHP Colona |
270 | 0 | |
| Rustic Acres Water Association |
260 | 4 | |
| Colona Park LLC Formerly Kershaw MHP |
250 | 0 | |
| Hazelwood Heights Subdivision |
235 | 3 | |
| Kewanee Lsrc Kewanee |
200 | 0 | |
| Country Estates Subdivision |
188 | 5 | |
| Hazelwood 4th Addition |
140 | 3 | |
| Timber Brook Estates |
120 | 3 | |
| Bishop Hill Bishop Hill |
113 | 0 | |
| Ophiem PWS |
110 | 4 | |
| Hillcrest Home |
103 | 0 |
Non-community systems in Henry County (39: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Henry County, the county this ZIP code lies in, largest 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.
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.