Water quality in St. Johns, Illinois
St. Johns is in Perry County. 10 active public water systems serve the county; 6 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 Perry County
6 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Crossroads MHP Du Quoin |
53 | 0 | 2.3 mi | |
| Tamaroa Tamaroa |
2,197 | 0 | 5.1 mi | |
| Pinckneyville Correctional Center Pinckneyville |
2,470 | 0 | 6.0 mi | |
| Pinckneyville Pinckneyville |
5,804 | 4 | 9.0 mi | |
| Cutler Cutler |
463 | 3 | 17.8 mi | |
| Willisville Willisville |
799 | 2 | 19.5 mi |
Non-community systems in Perry County (3: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Wal-Mart Supercenter 0252 |
25 | 0 | 0 | |
|
Miller Campground |
40 | 2 | 0 | |
|
Ice House Duquoin |
25 | 2 | 1 |
About this data
Water systems are matched to Perry County, nearest to St. Johns 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.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 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.