Water quality for ZIP code 61435
Warren County, Illinois, one of 8 ZIP codes in the county. 16 active public water systems serve the county; 11 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Warren County
5 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Monmouth Monmouth |
8,902 | 2 | 6.5 mi | |
| Little York Little York |
304 | 3 | 10.8 mi | |
| Kirkwood Kirkwood |
714 | 0 | 13.0 mi | |
| Roseville Roseville |
915 | 0 | 18.0 mi | |
| Little Swan Lake SD Little York |
438 | 1 | 21.4 mi |
Non-community systems in Warren County (10: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Coldbrook Christian Church |
130 | 3 | 1 | |
|
Hickory Grove Lake Company |
25 | 3 | 1 | |
|
United School District 304 |
480 | 3 | 0 | |
|
River of Life Church |
50 | 0 | 0 | |
|
Fairview Center Methodist CH |
150 | 0 | 0 | |
|
Youngs Lake |
25 | 1 | 1 | |
|
County Line Diner |
50 | 0 | 0 | |
|
Western Illinois Nature Group |
50 | 2 | 1 | |
|
Bayer US Crop Sco.monsanto Company |
43 | 3 | 0 | |
|
County Market Water Vend Mach |
25 | 1 | 0 |
About this data
Water systems are matched to Warren 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.
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.