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Infrastructure
Bridge Safety 624,000 bridge inspections Aviation Safety 30,000+ NTSB aviation events Dam Safety 92,600 dam safety records Water Safety 433,000+ public water systems Railroad Safety 438,000+ rail crossings Pipeline Safety 8,800+ pipeline incidents
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Browse Water Systems

25,913 public water systems in IL.

Public Water Systems Database

Browse 25,913 EPA-regulated public water systems with identifiers, population served, and water source type. Use the filters below to narrow results by state, system type, or name.

System Name PWSID State Type Population Served
ROY'S BLOOMINGDALE TAVERN IL0041483 Illinois Transient Non-Community 6,010,890
CHICAGO IL0316000 Illinois Community 2,746,388
OVALTINE PRODUCTS IL0039214 Illinois Transient Non-Community 900,500
AURORA IL0894070 Illinois Community 183,000
JOLIET IL1970450 Illinois Community 160,000
NAPERVILLE IL0434670 Illinois Community 156,406
IL AMERICAN-CHAMPAIGN IL0195300 Illinois Community 150,000
ROCKFORD IL2010300 Illinois Community 147,051
IL AMERICAN-PEORIA IL1435030 Illinois Community 137,575
IL AMERICAN-EAST ST LOUIS IL1635040 Illinois Community 131,368
SPRINGFIELD IL1671200 Illinois Community 117,444
ELGIN IL0894380 Illinois Community 114,797
BALDWIN ASSN IL0044958 Illinois Transient Non-Community 108,000
WAUKEGAN IL0971900 Illinois Community 87,149
CICERO IL0310510 Illinois Community 83,000
AQUA ILLINOIS-KANKAKEE IL0915030 Illinois Community 80,000
BLOOMINGTON IL1130200 Illinois Community 77,610
DECATUR IL1150150 Illinois Community 76,122
SCHAUMBURG IL0314890 Illinois Community 75,750
EVANSTON IL0310810 Illinois Community 74,486
IL AMERICAN-WEST SUBURBAN IL1974151 Illinois Community 73,978
ARLINGTON HEIGHTS IL0314030 Illinois Community 73,320
PALATINE IL0312340 Illinois Community 70,875
SKOKIE IL0312880 Illinois Community 66,422
DES PLAINES IL0310630 Illinois Community 60,675
ORLAND PARK IL0312310 Illinois Community 58,862
OAK LAWN IL0312220 Illinois Community 58,362
BERWYN IL0310210 Illinois Community 57,250
TINLEY PARK IL0314910 Illinois Community 56,703
OAK PARK IL0312250 Illinois Community 54,583
WHEATON IL0431050 Illinois Community 53,970
NORMAL IL1130900 Illinois Community 52,736
ROMEOVILLE IL1970900 Illinois Community 50,458
HOFFMAN ESTATES IL0311290 Illinois Community 50,179
PLAINFIELD IL1970800 Illinois Community 50,000
DOWNERS GROVE IL0430300 Illinois Community 49,425
GLENVIEW IL0311020 Illinois Community 47,856
O FALLON IL1631100 Illinois Community 46,603
IL AMERICAN-ALTON IL1195150 Illinois Community 46,127
ELMHURST IL0430350 Illinois Community 45,000
DEKALB IL0370100 Illinois Community 45,000
MOLINE IL1610450 Illinois Community 44,500
LOMBARD IL0430600 Illinois Community 44,476
BUFFALO GROVE IL0314180 Illinois Community 43,212
QUINCY IL0010650 Illinois Community 42,000
BARTLETT IL0314120 Illinois Community 41,500
MOUNT PROSPECT IL0311980 Illinois Community 41,000
CRYSTAL LAKE IL1110150 Illinois Community 40,661
CAROL STREAM IL0430200 Illinois Community 39,854
PARK RIDGE IL0312460 Illinois Community 39,800