Illinois water providers — page 4

Find published drinking-water records, providers, and official agency resources for Illinois. Review sources, sample dates, and coverage.

Official drinking-water resources

The responsible agency may differ for tribal systems. Record availability and sample dates vary by provider.

Community systems appear first. Sort: Population served · A–Z

Public water systems

5,095 systems in the imported directory. Includes community systems, schools, workplaces, and other public systems.

Il American-Dupage UtilityIL0430552 · CWS · Population served: 6,613
Illinois State University-NormalIL1135510 · CWS · Population served: 6,600
La Grange Highlands Sanitary DistrictIL0315860 · CWS · Population served: 6,600
CarlinvilleIL1170150 · CWS · Population served: 6,598
MahometIL0190450 · CWS · Population served: 6,580
Winthrop HarborIL0971950 · CWS · Population served: 6,565
ElburnIL0890300 · CWS · Population served: 6,559
GeneseoIL0730500 · CWS · Population served: 6,539
CartervilleIL1990150 · CWS · Population served: 6,528
Northern Illinois University-DekalbIL0375500 · CWS · Population served: 6,500
Aqua Illinois-Candlewick DvnIL0075050 · CWS · Population served: 6,426
CountrysideIL0310570 · CWS · Population served: 6,420
Dallas Rural Water DistrictIL0710010 · CWS · Population served: 6,370
MetropolisIL1270150 · CWS · Population served: 6,309
CarmiIL1930100 · CWS · Population served: 6,307
Fort Massac PwdIL1275050 · CWS · Population served: 6,290
FairfieldIL1910100 · CWS · Population served: 6,202
WilliamsvilleIL1671300 · CWS · Population served: 6,198
BraidwoodIL1970150 · CWS · Population served: 6,194
BeardstownIL0170150 · CWS · Population served: 5,951
Peoria HeightsIL1434750 · CWS · Population served: 5,908
Mount ZionIL1150350 · CWS · Population served: 5,833
PinckneyvilleIL1450150 · CWS · Population served: 5,804
HoopestonIL1830450 · CWS · Population served: 5,802
PanaIL0210500 · CWS · Population served: 5,800
East AltonIL1190200 · CWS · Population served: 5,786
StauntonIL1171050 · CWS · Population served: 5,756
Mill Creek PwdIL0015300 · CWS · Population served: 5,755
Grandwood Park Subdivision - Lake Co PwIL0975600 · CWS · Population served: 5,751
Coal CityIL0630200 · CWS · Population served: 5,749
WilmingtonIL1971100 · CWS · Population served: 5,700
Fayette Water CompanyIL0510010 · CWS · Population served: 5,608
Lake BluffIL0970750 · CWS · Population served: 5,600
ShelbyvilleIL1730300 · CWS · Population served: 5,600
Spring ValleyIL0111000 · CWS · Population served: 5,582
Millstone PwdIL1515050 · CWS · Population served: 5,565
MonticelloIL1470350 · CWS · Population served: 5,548
Il American-FernwayIL0315030 · CWS · Population served: 5,521
Eastern Illinois UniversityIL0295500 · CWS · Population served: 5,500
WatsekaIL0750900 · CWS · Population served: 5,500
Northeast Mount Vernon Water CompanyIL0810010 · CWS · Population served: 5,483
NorthfieldIL0312100 · CWS · Population served: 5,470
Park CityIL0971400 · CWS · Population served: 5,425
RobbinsIL0312700 · CWS · Population served: 5,415
Pike County Pwd 1IL1495000 · CWS · Population served: 5,375
Aqua Illinois-Oak BrookIL0430055 · CWS · Population served: 5,361
HighwoodIL0970550 · CWS · Population served: 5,335
PosenIL0312520 · CWS · Population served: 5,331
Sangamon Valley PwdIL0195150 · CWS · Population served: 5,300
GenoaIL0370150 · CWS · Population served: 5,298
Mitchell PwdIL1195210 · CWS · Population served: 5,253
FloraIL0250100 · CWS · Population served: 5,233
EurekaIL2030200 · CWS · Population served: 5,216
BerkeleyIL0310180 · CWS · Population served: 5,214
MoneeIL1970650 · CWS · Population served: 5,148
Caterpillar Trail PwdIL2035030 · CWS · Population served: 5,125
Aqua Illinois-WillowbrookIL1977870 · CWS · Population served: 5,100
MarseillesIL0990500 · CWS · Population served: 5,061
BrightonIL1174160 · CWS · Population served: 5,041
South Highway PwdIL0775400 · CWS · Population served: 4,972
Murdale PwdIL0775200 · CWS · Population served: 4,963
MilanIL1610400 · CWS · Population served: 4,945
Creve CoeurIL1790100 · CWS · Population served: 4,934
Olympia FieldsIL0312280 · CWS · Population served: 4,922
AnnaIL1810050 · CWS · Population served: 4,910
Round Lake ParkIL0971600 · CWS · Population served: 4,900
TuscolaIL0415030 · CWS · Population served: 4,875
Palos ParkIL0311000 · CWS · Population served: 4,873
West Prairie Water CompanyIL0410030 · CWS · Population served: 4,800
BreeseIL0270250 · CWS · Population served: 4,772
Prairie Path Water Company-Lake HolidayIL0995200 · CWS · Population served: 4,750
Cherry ValleyIL2010050 · CWS · Population served: 4,731
SullivanIL1390300 · CWS · Population served: 4,729
PetersburgIL1290200 · CWS · Population served: 4,725
EldoradoIL1655030 · CWS · Population served: 4,715
LebanonIL1630650 · CWS · Population served: 4,714
BeecherIL1970050 · CWS · Population served: 4,713
FreeburgIL1630600 · CWS · Population served: 4,707
Fox River GroveIL1110200 · CWS · Population served: 4,702
PittsfieldIL1490750 · CWS · Population served: 4,697
DupoIL1630350 · CWS · Population served: 4,684
Calhoun County RWDIL0130010 · CWS · Population served: 4,675
Stone ParkIL0313030 · CWS · Population served: 4,576
AthensIL1290050 · CWS · Population served: 4,575
AuburnIL1670050 · CWS · Population served: 4,574
LawrencevilleIL1010150 · CWS · Population served: 4,524
OglesbyIL0990700 · CWS · Population served: 4,500
HillsboroIL1350300 · CWS · Population served: 4,402
DwightIL1050250 · CWS · Population served: 4,400
CortlandIL0370051 · CWS · Population served: 4,398
SpartaIL1570600 · CWS · Population served: 4,395
SmithtonIL1631300 · CWS · Population served: 4,381
RivertonIL1670950 · CWS · Population served: 4,279
LakewoodIL1115760 · CWS · Population served: 4,267
HometownIL0311320 · CWS · Population served: 4,240
GeorgetownIL1830350 · CWS · Population served: 4,200
PaxtonIL0530250 · CWS · Population served: 4,200
MorrisonIL1950350 · CWS · Population served: 4,188
Aqua Illinois-PeotoneIL1970750 · CWS · Population served: 4,182
New BadenIL0274700 · CWS · Population served: 4,178