County · Illinois
Marshall County, Illinois: drinking water records
This overview covers 8 ZIP codes and 11 community water systems in Marshall County. It also stands in for 1 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 |
|---|---|---|---|---|---|
| Wenona IL1234950 | 974 | 0 | 0 | 1 | 10.7 ppb |
| Hopewell IL1235150 | 420 | 0 | 0 | 1 | 0 ppb |
| Varna IL1230300 | 342 | 0 | 0 | 1 | 0 ppb |
| Henry IL1230050 | 2,230 | 0 | 0 | 0 | 5 ppb |
| Lacon IL1230100 | 1,878 | 0 | 0 | 0 | 0 ppb |
| Toluca IL1230250 | 1,348 | 0 | 0 | 0 | 0 ppb |
| Prairie Path Water Company-Lake Wildwood IL1235200 | 1,295 | 0 | 0 | 0 | 4.3 ppb |
| Five Star Mobile Home Park MN1620017 | 458 | 0 | 0 | 0 | 7 ppb |
| Sparland IL1230200 | 358 | 0 | 0 | 0 | 2.6 ppb |
| Camp Grove IL1235100 | 146 | 0 | 0 | 0 | 0 ppb |
| La Rose IL1230150 | 96 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Marshall 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: 61479.
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.