County · Illinois
Whiteside County, Illinois: drinking water records
This overview covers 12 ZIP codes and 11 community water systems in Whiteside 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 |
|---|---|---|---|---|---|
| Fulton IL1950250 | 3,346 | 120 | 1 | 1 | 0 ppb |
| Il American-Sterling IL1955040 | 14,782 | 120 | 0 | 0 | 0 ppb |
| Rock Falls IL1950450 | 8,620 | 60 | 1 | 0 | 4.4 ppb |
| Morrison IL1950350 | 4,188 | 120 | 0 | 0 | 1 ppb |
| Prophetstown IL1950400 | 2,100 | 0 | 0 | 1 | 8.2 ppb |
| Erie IL1950200 | 1,479 | 0 | 0 | 3 | 1.2 ppb |
| Albany IL1950050 | 846 | 0 | 0 | 1 | 2.2 ppb |
| Tampico IL1950550 | 689 | 0 | 0 | 1 | 0 ppb |
| Honeycutt Hill MHP LLC IL1955225 | 75 | 0 | 0 | 1 | 1 ppb |
| Lyndon IL1950300 | 537 | 0 | 0 | 0 | 0 ppb |
| Country Acres MHP (Whiteside County) IL1955135 | 232 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Whiteside 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: 61243, 61251.
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.