County · Illinois
Ogle County, Illinois: drinking water records
This overview covers 17 ZIP codes and 21 community water systems in Ogle County. It also stands in for 4 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 |
|---|---|---|---|---|---|
| Rochelle IL1410500 | 9,446 | 300 | 0 | 5 | 1.8 ppb |
| Oregon IL1410400 | 3,449 | 240 | 0 | 1 | 2.9 ppb |
| Byron IL1410100 | 3,784 | 180 | 0 | 0 | 6.2 ppb |
| Hillcrest IL1410250 | 1,224 | 0 | 0 | 1 | 0 ppb |
| Shangri-La MHP IL1415285 | 370 | 0 | 0 | 1 | 0 ppb |
| Country View Estates Subdivision IL1415220 | 125 | 0 | 0 | 1 | 0 ppb |
| Mount Morris IL1410350 | 2,861 | 0 | 0 | 0 | 1.2 ppb |
| Polo IL1410450 | 2,355 | 0 | 0 | 0 | 0 ppb |
| Davis Junction IL1410030 | 2,344 | 0 | 0 | 0 | 0 ppb |
| Forreston IL1410200 | 1,338 | 0 | 0 | 0 | 1.2 ppb |
| Stillman Valley IL1410550 | 1,200 | 0 | 0 | 0 | 1.5 ppb |
| Lost Lake Utility District IL1415100 | 704 | 0 | 0 | 0 | 0 ppb |
| Creston IL1410150 | 627 | 0 | 0 | 0 | 0 ppb |
| Aqua Illinois-Nordic Woods IL1415330 | 425 | 0 | 0 | 0 | 2 ppb |
| Leaf River IL1410300 | 403 | 0 | 0 | 0 | 0 ppb |
| Prairie Path Water Company-Rockvale IL1415350 | 298 | 0 | 0 | 0 | 1.7 ppb |
| Aqua Illinois-Woodlawn IL1415050 | 290 | 0 | 0 | 0 | 0 ppb |
| Rolling Green Estates MHP IL1415245 | 191 | 0 | 0 | 0 | 0 ppb |
| Meridian MHP IL1415165 | 78 | 0 | 0 | 0 | 0 ppb |
| Knolls Edge Subdivision IL1415250 | 68 | 0 | 0 | 0 | 0 ppb |
| Lindenwood Water Association IL1415300 | 38 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Ogle 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: 60129, 61007, 61043, 61091.
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.