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 |
|---|---|---|---|---|
| Mackinaw | Mackinaw, IL | 3,399 | 21 | Clean |
| Rushville | East Peoria, IL | 3,375 | 39 | - |
| Carlyle | Carlyle, IL | 3,373 | 75 | Clean |
| Lake Sara Area Water Co-Op, Inc. | Effingham, IL | 3,352 | 18 | Detected |
| Fulton | Fulton, IL | 3,346 | 21 | Detected |
| Pontoon Beach Pwd | Granite City, IL | 3,325 | 18 | Detected |
| Galena | Galena, IL | 3,308 | 124 | Clean |
| IL American-Liberty Ridge West | Godfrey, IL | 3,307 | 12 | Clean |
| Abingdon | Monmouth, IL | 3,275 | 109 | Detected |
| Casey | Casey, IL | 3,274 | 109 | Clean |
| Virden | Virden, IL | 3,274 | 30 | Clean |
| Mount Sterling | Mt. Sterling, IL | 3,271 | 26 | - |
| Olin Winchester LLC | East Alton, IL | 3,250 | 151 | - |
| Indian Head Park | Indian Head Park, IL | 3,240 | 25 | - |
| Nashville | Nashville, IL | 3,230 | 24 | Clean |
| North East Marion County Water Cmpny | Salem, IL | 3,220 | 26 | Clean |
| Northshore Univ Glenbrook | Glenview, IL | 3,200 | 42 | Clean |
| Knoxville | Knoxville, IL | 3,120 | 332 | - |
| East Dundee | East Dundee, IL | 3,115 | 11 | - |
| Smg Water Coop | Winchester, IL | 3,110 | 15 | - |
| Sleepy Hollow | Sleepy Hollow, IL | 3,100 | 52 | - |
| Momence | Momence, IL | 3,075 | 39 | - |
| Christopher | Christopher, IL | 3,072 | 90 | - |
| Lakeside Pwd | Carbondale, IL | 3,065 | 72 | - |
| Aqua Illinois-Hawthorn Woods | Kankakee, IL | 3,065 | 23 | - |
| Savanna | Savanna, IL | 3,020 | 30 | - |
| Oasis MHP | Northbrook, IL | 3,000 | 101 | - |
| Winnebago | Winnebago, IL | 3,000 | 76 | - |
| Cat Mossville | Mossville, IL | 3,000 | 235 | - |
| Newton | Newton, IL | 2,977 | 3 | - |
| Marquette Heights | Marquette Heights, IL | 2,974 | 127 | - |
| Dixmoor | Dixmoor, IL | 2,973 | 165 | Detected |
| Bushnell | Bushnell, IL | 2,972 | 70 | Clean |
| Havana | Havana, IL | 2,963 | 15 | Clean |
| Menard Correctional Center | Menard, IL | 2,950 | 125 | - |
| Pittsburg | Pittsburg, IL | 2,948 | 45 | - |
| Fmc Water Company | Odin, IL | 2,945 | 22 | - |
| Arcola | Arcola, IL | 2,927 | 49 | - |
| Mount Morris | Mt. Morris, IL | 2,861 | 200 | - |
| Heyworth | Heyworth, IL | 2,853 | 5 | - |
| Mission Brook SD | Northbrook, IL | 2,852 | 51 | - |
| Holiday Shores SD | Edwardsville, IL | 2,840 | 136 | Clean |
| Albion | Albion, IL | 2,839 | 20 | - |
| Southern IL University-Edwardsville | Edwardsville, IL | 2,817 | 12 | Detected |
| McLeansboro | McLeansboro, IL | 2,812 | 50 | - |
| El Paso | El Paso, IL | 2,812 | 15 | - |
| South Palos Twsp Sanitary Dist | Palos Park, IL | 2,800 | 27 | - |
| Highland Park Hospital | Chicago, IL | 2,800 | 53 | - |
| North Morgan Water Coop | Jacksonville, IL | 2,763 | 9 | - |
| Hamilton | Hamilton, IL | 2,753 | 52 | - |