County · Illinois
Rock Island County, Illinois: drinking water records
This overview covers 17 ZIP codes and 48 community water systems in Rock Island 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 |
|---|---|---|---|---|---|
| Silvis IL1610700 | 7,473 | 60 | 0 | 1 | 1.7 ppb |
| Moline IL1610450 | 44,500 | 120 | 1 | 0 | 4 ppb |
| Rock Island IL1610650 | 39,018 | 120 | 1 | 0 | 5.6 ppb |
| East Moline IL1610250 | 21,374 | 120 | 2 | 0 | 10 ppb |
| Rock Island Arsenal, Us Army IL1615387 | 7,800 | 120 | 2 | 0 | 0 ppb |
| Milan IL1610400 | 4,945 | 120 | 0 | 0 | 7.2 ppb |
| Coal Valley IL1614260 | 3,873 | 180 | 0 | 0 | 8.3 ppb |
| Carbon Cliff IL1610100 | 2,134 | 0 | 0 | 4 | 3.3 ppb |
| Silvis Heights Water Corp IL1615750 | 1,450 | 0 | 0 | 4 | 0 ppb |
| Il American-Andalusia IL1610050 | 1,184 | 60 | 0 | 0 | 3 ppb |
| Cordova IL1610150 | 640 | 0 | 0 | 1 | 0 ppb |
| Mississippi Manufactured Home Community IL1610350 | 503 | 0 | 0 | 1 | 0 ppb |
| Woodland a and B MHP IL1617925 | 490 | 0 | 0 | 1 | 2.6 ppb |
| Air View MHP IL1615185 | 200 | 0 | 0 | 1 | 1 ppb |
| Ilcv Candle MHP, LLC IL1610120 | 148 | 0 | 0 | 2 | 9.6 ppb |
| Hampton IL1610300 | 1,863 | 0 | 0 | 0 | 1.3 ppb |
| Port Byron IL1610550 | 1,678 | 0 | 0 | 0 | 4.7 ppb |
| Northfield Estates MI0040594 | 1,620 | 0 | 0 | 0 | 0 ppb |
| Rapids City IL1610600 | 962 | 0 | 0 | 0 | 0 ppb |
| Clover Leaf Village MHP IL1610160 | 732 | 0 | 0 | 0 | 1.1 ppb |
| Reynolds IL1614800 | 508 | 0 | 0 | 0 | 2.1 ppb |
| Croppers 1st 4th and 5th Addition IL1615250 | 495 | 0 | 0 | 0 | 0.8 ppb |
| Cedar Brook Estates Subdivision IL1615170 | 450 | 0 | 0 | 0 | 0 ppb |
| Edgington Water District IL1615550 | 391 | 0 | 0 | 0 | 2 ppb |
| Falcon Farms IL1617635 | 350 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Rock Island 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: 61236, 61237.
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.