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EWG's Tap Water Database

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Illinois

  • 1,737 Utilities

  • Serving: 13,082,000

  • Data available: 2010-2015

  • Contaminants Found: 94

 

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.

LARGE UTILITIES
ALL UTILITIES WITH VIOLATIONS
LARGE UTILITIES WITH VIOLATIONS

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

UtilityLocationPeople
Served
AddisonAddison, IL38,090
AlgonquinAlgonquin, IL33,000
AlsipAlsip, IL20,500
AntiochAntioch, IL13,724
Aqua Illinois - KankakeeKankakee, IL76,299
Aqua Illinois-Vermilion CountyDanville, IL38,000
Arlington HeightsArlington Heights, IL76,943
AuroraAurora, IL171,000
BarringtonBarrington, IL10,168
BartlettBartlett, IL41,442
BataviaBatavia, IL26,348
BellwoodBellwood, IL20,535
BelvidereBelvidere, IL23,500
BensenvilleBensenville, IL20,703
BerwynBerwyn, IL55,000
BethaltoBethalto, IL17,500
BloomingdaleBloomingdale, IL21,675
BloomingtonBloomington, IL75,975
Blue IslandBlue Island, IL23,463
BridgeviewBridgeview, IL15,500
BrookfieldBrookfield, IL19,085
Buffalo GroveBuffalo Grove, IL44,411
Burr RidgeBurr Ridge, IL11,259
Calumet CityCalumet City, IL39,071
CantonCanton, IL13,932
CarbondaleCarbondale, IL25,597
Carol StreamCarol Stream, IL40,438
CarpentersvilleCarpentersville, IL30,586
CaryCary, IL18,713
CaseyvilleCaseyville, IL12,337
More

Utilities that accumulated/accrued the most violation points as of October 2014 to September 2017 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.

UtilityLocationPeople
Served
Violation
Points
MaeystownMaeystown, IL230170
Lynwood 3rd AdditionGeneseo, IL9097
Triangle Mobile Home ParkAllegan, IL9095
Fox Lawn Utilities Company Inc.Yorkville, IL27391
New Salem Public Water DistrictAdair, IL22565
ShannonShannon, IL75860
Fountain Valley Mobile Home ParkRantoul, IL37531
HinckleyHinckley, IL1,99430
CutlerCutler, IL55025
RochelleRochelle, IL9,85020
SpartaSparta, IL4,85320
BudaBuda, IL60020
CambridgeCambridge, IL2,10820
AtlantaAtlanta, IL1,64915
BroadlandsBroadlands, IL33010
La SalleLasalle, IL9,70010
Country Lane Mobile Home ParkBloomington, IL5010
WeldonWeldon, IL45010
CarthageCarthage, IL2,7256
OswegoOswego, IL25,8556
Countryaire Estates Mobile Home ParkHinsdale, IL1255
EvansvilleEvansville, IL7405
White Oaks Estates Water Association Inc.Dixon, IL4005
ManchesterManchester, IL4255
GreenfieldGreenfield, IL1,2005
Seymour Water DistrictSeymour, IL3505
BiggsvilleBiggsville, IL3503
CaberyCabery, IL2633
Eastwood Manor Water CompanyWoodstock, IL9003
StegerSteger, IL9,8693

Large utilities that accumulated/accrued the most violation points as of October 2014 to September 2017 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.

UtilityLocationPeople
Served
Violation
Points
OswegoOswego, IL25,8556
CiceroCicero, IL85,6161
TroyTroy, IL15,0001
WheelingWheeling, IL36,9441
Wood RiverWood River, IL12,7501
HarveyHarvey, IL30,0001
Lake ForestLake Forest, IL21,6001
WaukeganWaukegan, IL86,0001
Forest ParkForest Park, IL15,6881
Mount ProspectMt Prospect, IL40,9041
KewaneeKewanee, IL12,9501
PlainfieldPlainfield, IL30,3001
ChathamChatham, IL10,2601
BrookfieldBrookfield, IL19,0851

Contaminants found in Illinois above health guidelines

Found above health guidelinesFound
Contaminant# of UtilitiesPeople Served# of UtilitiesPeople Served

Total trihalomethanes (TTHMs)
1,25812,631,9071,27612,671,080

Chloroform
1,21812,515,9411,22012,524,518

Bromodichloromethane
1,13312,389,0191,13312,389,019

Dibromochloromethane
1,05411,935,7501,05512,091,132

Trichloroacetic acid
88311,472,66488811,561,686

Dichloroacetic acid
89311,129,86190011,198,963

Radium-226
1,44010,744,9231,45110,756,490

Chromium (hexavalent)
58110,713,46464111,237,729

Radium-228
1,41410,467,4711,41710,475,222

Arsenic
6253,005,1676253,005,167

Bromoform
3501,929,0513812,670,267

Chlorate
49456,4072723,769,304

Strontium
67371,6121,07512,359,890

1,4-Dioxane
19370,0161432,542,270

Chlorite
84369,48592388,540

Manganese
106340,1626763,095,208

Nitrate and nitrite
98302,6847898,671,218

Atrazine
113291,017128478,974

Bromate
16217,85516217,855

Uranium
10217,77039360,045

Tetrachloroethylene (perchloroethylene)
9207,6259207,625

Nitrate
86184,6859999,757,539

Simazine
66176,50976198,285

Perfluorooctanoic acid (PFOA)
16151,68316151,683

Benzo[a]pyrene
344,401344,401

Trichloroethylene
637,91112276,213

Vinyl chloride
536,730536,730

Barium
2435,4571,16710,680,884

Perfluorooctane sulfonate (PFOS)
126,443126,443

Perfluorohexane sulfonate (PFHXS)
224,480224,480

Molybdenum
48,19144510,870,523

Tritium
26,47226,472

Antimony
21,06821,068

Cadmium
29102910

Di(2-ethylhexyl) phthalate
2205440,969

Contaminants found in Illinois above legal limits

Contaminant# of UtilitiesPeople Served

Total trihalomethanes (TTHMs)
713,607

Radium, combined (-226 & -228)
912,551

Nitrate and nitrite
67,803

Arsenic
107,109

Haloacetic acids (HAA5)
54,474

Barium
2705

Nitrate
1230