Illinois
1,750 Utilities
Serving: 13,079,000
Data available: 2012-2017
Contaminants Found: 85
EWG's drinking water quality report for Illinois shows results of tests conducted by the water utilities in Illinois and provided to EWG by the Illinois Environmental Protection Agency.
Below are utilities in Illinois serving over 10,000 people, listed alphabetically. Click the "more" button below to get the full list of utilities serving over 10,000 people.
Large utilities in Illinois
Utility | Location | People Served |
---|---|---|
Addison | Addison, IL | 38,090 |
Algonquin | Algonquin, IL | 33,000 |
Alsip | Alsip, IL | 20,500 |
Antioch | Antioch, IL | 13,724 |
Aqua Illinois - Kankakee | Kankakee, IL | 76,299 |
Aqua Illinois-Vermilion County | Danville, IL | 38,000 |
Arlington Heights | Arlington Heights, IL | 76,943 |
Aurora | Aurora, IL | 171,000 |
Barrington | Barrington, IL | 10,168 |
Bartlett | Bartlett, IL | 41,442 |
Batavia | Batavia, IL | 26,348 |
Bellwood | Bellwood, IL | 20,535 |
Belvidere | Belvidere, IL | 23,500 |
Bensenville | Bensenville, IL | 20,703 |
Berwyn | Berwyn, IL | 55,000 |
Bethalto | Bethalto, IL | 17,500 |
Bloomingdale | Bloomingdale, IL | 21,675 |
Bloomington | Bloomington, IL | 75,975 |
Blue Island | Blue Island, IL | 23,463 |
Bridgeview | Bridgeview, IL | 15,500 |
Brookfield | Brookfield, IL | 19,085 |
Buffalo Grove | Buffalo Grove, IL | 44,411 |
Burr Ridge | Burr Ridge, IL | 11,259 |
Calumet City | Calumet City, IL | 39,071 |
Canton | Canton, IL | 13,932 |
Carbondale | Carbondale, IL | 25,597 |
Carol Stream | Carol Stream, IL | 40,438 |
Carpentersville | Carpentersville, IL | 30,586 |
Cary | Cary, IL | 18,713 |
Caseyville | Caseyville, IL | 12,337 |
Utilities that accumulated/accrued the most violation points as of April 2016 to March 2019 in Illinois
The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.
Large utilities that accumulated/accrued the most violation points as of April 2016 to March 2019 in Illinois
The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.
Utility | Location | People Served | Violation Points |
---|---|---|---|
Lemont | Lemont, IL | 13,098 | 26 |
Morton | Morton, IL | 17,000 | 21 |
IL American-Streator | Creve Coeur, IL | 19,000 | 11 |
Carbondale | Carbondale, IL | 25,597 | 10 |
Crest Hill | Crest Hill, IL | 14,889 | 9 |
Oswego | Oswego, IL | 25,855 | 8 |
E J Water Corp | Dieterich, IL | 12,896 | 7 |
Lockport | Lockport, IL | 24,466 | 5 |
Chicago Heights | Chicago Heights, IL | 33,072 | 4 |
Downers Grove | Downers Grove, IL | 50,616 | 4 |
Brookfield | Brookfield, IL | 19,085 | 4 |
Calumet City | Calumet City, IL | 39,071 | 4 |
Gurnee | Gurnee, IL | 31,000 | 3 |
Lindenhurst | Lindenhurst, IL | 14,632 | 3 |
East Moline | East Moline, IL | 20,500 | 2 |
Mount Prospect | Mt Prospect, IL | 40,904 | 2 |
De Kalb | Dekalb, IL | 41,000 | 2 |
Belvidere | Belvidere, IL | 23,500 | 1 |
Romeoville | Romeoville, IL | 50,001 | 1 |
IL American - Homer Township | Creve Coeur, IL | 18,870 | 1 |
Crestwood | Crestwood, IL | 10,823 | 1 |
Wheeling | Wheeling, IL | 36,944 | 1 |
Troy | Troy, IL | 15,000 | 1 |
Orland Park | Orland Park, IL | 55,603 | 1 |
Hanover Park | Hanover Park, IL | 38,278 | 1 |
Forest Park | Forest Park, IL | 15,688 | 1 |
Des Plaines | Des Plaines, IL | 58,710 | 1 |
Rantoul | Rantoul, IL | 13,000 | 1 |
Shorewood | Shorewood, IL | 15,783 | 1 |
Oak Forest | Oak Forest, IL | 28,051 | 1 |
Contaminants found in Illinois above health guidelines
Found above health guidelines | Found | ||||||
---|---|---|---|---|---|---|---|
Contaminant | # of Utilities | People Served | # of Utilities | People Served | |||
Total trihalomethanes (TTHMs) | 1,575 | 12,809,009 | 1,575 | 12,809,009 | |||
Haloacetic acids (HAA5) | 1,424 | 12,646,152 | 1,424 | 12,646,152 | |||
Chloroform | 1,469 | 12,602,575 | 1,498 | 12,687,640 | |||
Bromodichloromethane | 1,355 | 12,591,613 | 1,355 | 12,591,613 | |||
Dibromochloromethane | 1,267 | 12,182,916 | 1,276 | 12,431,028 | |||
Dichloroacetic acid | 1,201 | 12,054,873 | 1,204 | 12,063,208 | |||
Trichloroacetic acid | 1,108 | 11,922,365 | 1,109 | 11,930,060 | |||
Radium, combined (-226 & -228) | 1,454 | 11,504,893 | 1,319 | 9,628,413 | |||
Dibromoacetic acid | 912 | 10,977,163 | 916 | 11,190,180 | |||
Nitrate | 911 | 10,797,239 | 1,137 | 9,863,400 | |||
Chromium (hexavalent) | 565 | 10,638,231 | 543 | 10,892,576 | |||
Nitrate and nitrite | 762 | 9,484,022 | 845 | 8,515,881 | |||
Arsenic | 843 | 3,313,777 | 785 | 3,231,725 | |||
Bromoform | 458 | 1,919,139 | 595 | 3,612,445 | |||
Atrazine | 188 | 545,483 | 186 | 798,330 | |||
Chlorate | 61 | 460,854 | 229 | 3,627,881 | |||
Chlorite | 104 | 381,170 | 85 | 360,038 | |||
1,4-Dioxane | 22 | 364,170 | 130 | 2,490,199 | |||
Manganese | 68 | 258,221 | 848 | 2,802,732 | |||
Bromate | 19 | 241,126 | 18 | 238,126 | |||
Strontium | 11 | 232,283 | 539 | 11,412,776 | |||
Tetrachloroethylene (perchloroethylene) | 10 | 231,280 | 11 | 232,000 | |||
Simazine | 81 | 213,706 | 99 | 242,508 | |||
Perfluorooctanoic acid (PFOA) | 18 | 153,012 | 18 | 153,012 | |||
Carbon tetrachloride | 16 | 105,939 | 8 | 249,625 | |||
Barium | 34 | 77,878 | 1,443 | 10,242,686 | |||
Trichloroethylene | 4 | 37,671 | 8 | 217,094 | |||
Benzo[a]pyrene | 4 | 37,451 | 5 | 50,160 | |||
Cadmium | 4 | 33,236 | 4 | 33,236 | |||
Perfluorooctane sulfonate (PFOS) | 2 | 27,393 | 2 | 27,393 | |||
Uranium | 5 | 27,383 | 28 | 67,461 | |||
Perfluorohexane sulfonate (PFHXS) | 2 | 24,375 | 2 | 24,375 | |||
Thallium | 3 | 12,183 | 3 | 12,183 | |||
Tritium | 2 | 6,472 | 2 | 6,472 | |||
Molybdenum | 2 | 5,705 | 411 | 10,758,715 | |||
Aluminum | 1 | 5,614 | 2 | 12,364 | |||
Antimony | 1 | 660 | 2 | 1,564 | |||
Selenium | 1 | 221 | 138 | 585,364 | |||
Monobromoacetic acid | 2 | 159 | 432 | 5,535,279 | |||
Styrene | 1 | 120 | 2 | 576 |
Contaminants found in Illinois above legal limits
Contaminant | # of Utilities | People Served | |
---|---|---|---|
Radium, combined (-226 & -228) | 8 | 5,575 | |
Arsenic | 8 | 4,297 | |
Total trihalomethanes (TTHMs) | 2 | 681 | |
Barium | 1 | 225 |