PlainWater

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.

Population Violations Health Violations Name
System Name Location Population Violations PFAS
Chicago Chicago, IL 2,746,388 212 Clean
Aurora Aurora, IL 183,000 55 Detected
Joliet Joliet, IL 160,000 380 Clean
Naperville Naperville, IL 156,406 5 Clean
IL American-Champaign Godfrey, IL 150,000 7 Clean
Rockford Rockford, IL 147,051 268 Detected
IL American-Peoria Godfrey, IL 137,575 20 Detected
IL American-East St Louis Godfrey, IL 131,368 12 Detected
Springfield Springfield, IL 117,444 23 Detected
Elgin Elgin, IL 114,797 37 Detected
Waukegan Waukegan, IL 87,149 118 Clean
Cicero Cicero, IL 83,000 43 Clean
Aqua Illinois-Kankakee Kankakee, IL 80,000 21 Clean
Bloomington Bloomington, IL 77,610 61 Detected
Decatur Decatur, IL 76,122 99 Clean
Schaumburg Schaumburg, IL 75,750 22 Clean
Evanston Evanston, IL 74,486 99 Clean
IL American-West Suburban Godfrey, IL 73,978 21 Clean
Arlington Heights Arlington Heights, IL 73,320 79 Clean
Palatine Palatine, IL 70,875 28 Clean
Skokie Skokie, IL 66,422 26 Clean
Des Plaines Des Plaines, IL 60,675 17 Clean
Orland Park Orland Park, IL 58,862 20 Clean
Oak Lawn Oak Lawn, IL 58,362 39 Clean
Berwyn Berwyn, IL 57,250 70 Clean
Tinley Park Tinley Park, IL 56,703 42 Clean
Oak Park Oak Park, IL 54,583 29 Clean
Wheaton Wheaton, IL 53,970 11 Clean
Normal Normal, IL 52,736 3 Clean
Romeoville Romeoville, IL 50,458 266 Detected
Hoffman Estates Hoffman Estates, IL 50,179 42 Clean
Plainfield Plainfield, IL 50,000 182 Clean
Downers Grove Downers Grove, IL 49,425 36 Clean
Glenview Glenview, IL 47,856 29 Clean
O Fallon O'Fallon, IL 46,603 102 Detected
IL American-Alton Godfrey, IL 46,127 17 Detected
Dekalb Dekalb, IL 45,000 105 Clean
Elmhurst Elmhurst, IL 45,000 47 Detected
Moline Moline, IL 44,500 14 Detected
Lombard Lombard, IL 44,476 13 Clean
Buffalo Grove Buffalo Grove, IL 43,212 13 Clean
Quincy Quincy, IL 42,000 78 Detected
Bartlett Bartlett, IL 41,500 300 Clean
Mount Prospect Mount Prospect, IL 41,000 49 Clean
Crystal Lake Crystal Lake, IL 40,661 54 Detected
Carol Stream Carol Stream, IL 39,854 23 Detected
Park Ridge Park Ridge, IL 39,800 19 Clean
Wheeling Wheeling, IL 39,725 43 Clean
Streamwood Streamwood, IL 39,577 27 Clean
Rock Island Rock Island, IL 39,018 145 Detected
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