County · Illinois
Lee County, Illinois: drinking water records
This overview covers 14 ZIP codes and 15 community water systems in Lee County. It also stands in for 3 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 |
|---|---|---|---|---|---|
| Woodhaven IL1035100 | 4,100 | 60 | 0 | 1 | 2.2 ppb |
| Dixon IL1030200 | 15,096 | 360 | 0 | 0 | 0 ppb |
| Lee IL1034600 | 313 | 0 | 0 | 1 | 5.5 ppb |
| Compton IL1030150 | 279 | 0 | 0 | 11 | 1.1 ppb |
| Steward IL1030450 | 238 | 0 | 0 | 6 | 10 ppb |
| Harmon IL1030300 | 111 | 0 | 0 | 1 | 5 ppb |
| Amboy IL1030050 | 2,500 | 0 | 0 | 0 | 9.3 ppb |
| Dixon Correctional Center IL1035500 | 1,038 | 0 | 0 | 0 | 0 ppb |
| Ashton IL1030100 | 967 | 0 | 0 | 0 | 6.3 ppb |
| Franklin Grove IL1030250 | 896 | 0 | 0 | 0 | 0 ppb |
| Paw Paw IL1030400 | 830 | 0 | 0 | 0 | 0 ppb |
| White Oaks Estates Water Assoc., INC. IL1035050 | 410 | 0 | 0 | 0 | 0 ppb |
| Rock River Estates MHP IL1035245 | 400 | 0 | 0 | 0 | 0 ppb |
| Sublette IL1030500 | 380 | 0 | 0 | 0 | 0 ppb |
| West Brooklyn IL1030550 | 131 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Lee 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: 61057, 61324, 61331.
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.