County · Illinois
Randolph County, Illinois: drinking water records
This overview covers 11 ZIP codes and 14 community water systems in Randolph County. It also stands in for 2 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Sparta IL1570600 | 4,395 | 120 | 1 | 8 | 5.2 ppb |
| Red Bud IL1570450 | 3,804 | 60 | 0 | 2 | 6 ppb |
| Chester IL1570100 | 8,407 | 120 | 3 | 0 | 1.8 ppb |
| Egyptian Water Company IL1570010 | 2,330 | 0 | 0 | 1 | 0 ppb |
| Steeleville IL1570650 | 1,960 | 0 | 0 | 8 | 2.4 ppb |
| Prairie Du Rocher IL1570400 | 759 | 0 | 0 | 1 | 7 ppb |
| Tilden IL1570700 | 740 | 0 | 0 | 1 | 0 ppb |
| Evansville IL1570250 | 660 | 0 | 0 | 1 | 0 ppb |
| Menard Correctional Center IL1575550 | 2,950 | 0 | 0 | 0 | 10 ppb |
| Coulterville IL1570150 | 1,052 | 0 | 0 | 0 | 2 ppb |
| Percy IL1570350 | 961 | 0 | 0 | 0 | 8.3 ppb |
| Baldwin IL1570050 | 601 | 0 | 0 | 0 | 0 ppb |
| Ellis Grove IL1570200 | 403 | 0 | 0 | 0 | 0 ppb |
| Ruma IL1570550 | 341 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Randolph County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 62261, 62297.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.