County · Illinois
Piatt County, Illinois: drinking water records
This overview covers 11 ZIP codes and 9 community water systems in Piatt 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 |
|---|---|---|---|---|---|
| Monticello IL1470350 | 5,548 | 60 | 0 | 0 | 1 ppb |
| Bement IL1470050 | 1,661 | 0 | 0 | 1 | 1.5 ppb |
| De Land IL1470200 | 446 | 0 | 0 | 5 | 1.7 ppb |
| Cisco IL1470150 | 242 | 0 | 0 | 1 | 0 ppb |
| Cerro Gordo IL1470100 | 1,433 | 0 | 0 | 0 | 8.5 ppb |
| Mansfield IL1470300 | 939 | 0 | 0 | 0 | 0.7 ppb |
| White Heath Waterworks IL1475050 | 685 | 0 | 0 | 0 | 0 ppb |
| Hammond IL1470250 | 478 | 0 | 0 | 0 | 0 ppb |
| Piatt County Nursing Home IL1470360 | 93 | 0 | 0 | 0 | not reported |
ZIP reports in Piatt 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: 61855.
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.