Public Water Systems
5,117 active public water systems in IL, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| Atlanta | Atlanta, IL | 1,692 | 83 | - |
| St Rose Pwd | St Rose, IL | 1,688 | 124 | - |
| Port Byron | Port Byron, IL | 1,678 | 44 | - |
| Sheridan Correctional Center | Sheridan, IL | 1,670 | 124 | - |
| Pontiac Correctional Center | Pontiac, IL | 1,665 | 37 | - |
| Bement | Bement, IL | 1,661 | 20 | - |
| Eaton Pwd | Annapolis, IL | 1,655 | 20 | - |
| Neoga | Neoga, IL | 1,636 | 221 | - |
| Pekin Fed Correctional Inst and Prsncmp | Pekin, IL | 1,635 | 12 | - |
| Vienna | Vienna, IL | 1,618 | 458 | - |
| Shawnee Correctional Center | Dieterich, IL | 1,617 | 19 | - |
| Earlville | Earlville, IL | 1,613 | 27 | - |
| Grayville | Grayville, IL | 1,613 | 163 | - |
| Benld | Benld, IL | 1,612 | 87 | - |
| Warsaw | Warsaw, IL | 1,607 | 106 | - |
| Dunlap | Dunlap, IL | 1,603 | 19 | - |
| Western IL Correctional Center | Mt. Sterling, IL | 1,600 | 2 | - |
| Herscher | Herscher, IL | 1,600 | 28 | - |
| Jerome | Springfield, IL | 1,600 | 52 | - |
| Prairie Path Water Company-Oakwood | McHenry, IL | 1,600 | 67 | - |
| Erie | Erie, IL | 1,600 | 46 | - |
| St Bernards Church | Lockport, IL | 1,600 | 0 | - |
| Northwest Bible Baptist Church | Elgin, IL | 1,600 | 3 | - |
| Teutopolis | Teutopolis, IL | 1,599 | 28 | - |
| Winchester | Winchester, IL | 1,589 | 17 | - |
| IL American-Arrowhead | Godfrey, IL | 1,581 | 6 | - |
| Jasper Waterworks Corporation | Fairfield, IL | 1,578 | 38 | - |
| East Dubuque | East Dubuque, IL | 1,565 | 117 | - |
| Lcpw - Brooks Farm Subdivision | Libertyville, IL | 1,563 | 2 | - |
| Kincaid | Kincaid, IL | 1,561 | 73 | - |
| Manito | Manito, IL | 1,552 | 64 | - |
| Fci-Marion | Marion, IL | 1,544 | 57 | - |
| Germantown | Germantown, IL | 1,537 | 45 | - |
| Sandoval | Sandoval, IL | 1,528 | 37 | - |
| Pheasant Lake Estates MHP | Beecher, IL | 1,528 | 20 | - |
| Okawville | Okawville, IL | 1,521 | 27 | - |
| Virginia | Virginia, IL | 1,514 | 36 | - |
| Greenup | Greenup, IL | 1,513 | 29 | - |
| Roxana | Roxana, IL | 1,509 | 6 | - |
| Pleasant Plains | Pleasant Plains, IL | 1,508 | 18 | - |
| Waterman | Waterman, IL | 1,506 | 277 | - |
| IL American-Mount Pulaski | Godfrey, IL | 1,506 | 46 | - |
| Lanark | Lanark, IL | 1,504 | 23 | - |
| East Hazel Crest | East Hazel Crest, IL | 1,500 | 28 | - |
| Vandalia Correctional Center | Vandalia, IL | 1,500 | 175 | Clean |
| Clifton | Clifton, IL | 1,500 | 30 | - |
| Logan Correctional Center | Lincoln, IL | 1,500 | 5 | - |
| Mound Pwd | Collinsville, IL | 1,500 | 67 | - |
| Prairie Path Water Company-Westlake | McHenry, IL | 1,493 | 6 | - |
| Maple Park | Maple Park, IL | 1,484 | 210 | - |