County · Illinois
McDonough County, Illinois: drinking water records
This overview covers 10 ZIP codes and 15 community water systems in McDonough County. It also stands in for 0 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 |
|---|---|---|---|---|---|
| Macomb IL1090350 | 15,051 | 120 | 0 | 4 | 4.3 ppb |
| Western Illinois University IL1095510 | 8,000 | 120 | 0 | 0 | 0 ppb |
| Bushnell IL1090150 | 2,972 | 60 | 0 | 0 | 0 ppb |
| Blandinsville IL1090100 | 569 | 120 | 0 | 0 | 1.3 ppb |
| Industry IL1090300 | 475 | 0 | 0 | 2 | 0 ppb |
| New Salem Pwd IL1090010 | 451 | 0 | 0 | 5 | 0 ppb |
| Bardolph IL1090050 | 303 | 0 | 0 | 2 | 0 ppb |
| Stratford West Association, INC. IL1095200 | 44 | 0 | 0 | 4 | 0 ppb |
| West Prairie Water Co-Op IL1090030 | 2,395 | 0 | 0 | 0 | 0 ppb |
| Colchester IL1090200 | 1,395 | 0 | 0 | 0 | 0 ppb |
| Good Hope IL1090250 | 536 | 0 | 0 | 0 | 0 ppb |
| Oronoco Estates MHC MN1550008 | 505 | 0 | 0 | 0 | 5 ppb |
| Prairie City IL1090400 | 425 | 0 | 0 | 0 | 0 ppb |
| Kiljordan Meadows IL1090380 | 282 | 0 | 0 | 0 | 0 ppb |
| Sciota IL1090020 | 180 | 0 | 0 | 0 | 0 ppb |
ZIP reports in McDonough County
No ZIP report in this county is published yet.
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.