PFAS in Illinois Water
Based on EPA UCMR 5 testing of 123 public water systems in Illinois.
See Illinois on the national heatmap123
Systems Tested
123
With PFAS Detected
27
Above EPA Limits
22%
Exceed MCL
Most Commonly Detected PFAS in Illinois
Systems with detections · EPA UCMR 5 (2023–2025)
PFBA 82 systems
PFPeA 58 systems
PFHxA 40 systems
PFBS 39 systems
PFHxS 19 systems
PFOS 18 systems
Check your Illinois ZIP code
Get specific results for your neighborhood's water utility.
Water Systems in Illinois (123)
Click any row to see ZIP-level details| Water System | PWSID | PFAS Detected | Above MCL | Risk |
|---|---|---|---|---|
| COLLINSVILLE, IL Groundwater | IL1194280 | 8 | 3 | High Risk |
| NORTH PARK PWD Groundwater | IL2015500 | 7 | 3 | High Risk |
| EAST ALTON Groundwater | IL1190200 | 8 | 2 | High Risk |
| CREST HILL Groundwater | IL1970250 | 7 | 2 | High Risk |
| CHANNAHON Groundwater | IL1970200 | 6 | 2 | High Risk |
| ABINGDON Groundwater | IL0950050 | 5 | 2 | High Risk |
| GALESBURG Groundwater | IL0950200 | 5 | 2 | High Risk |
| NORTH EAST CENTRAL PWD Groundwater | IL1195280 | 4 | 2 | High Risk |
| DIXMOOR Surface Water | IL0310660 | 2 | 2 | High Risk |
| Prairie Path Water Co. - Whispering Hills Groundwater | IL1115700 | 7 | 1 | High Risk |
| IL AMERICAN-PEKIN Groundwater | IL1795040 | 7 | 1 | High Risk |
| SOUTH ELGIN Groundwater | IL0890800 | 5 | 1 | High Risk |
| IL American - Lincoln GU | IL1075030 | 5 | 1 | High Risk |
| IL AMERICAN-PEORIA Groundwater | IL1435030 | 5 | 1 | High Risk |
| EAST PEORIA Groundwater | IL1790200 | 4 | 1 | High Risk |
| PLEASANT VALLEY PWD Groundwater | IL1435470 | 3 | 1 | High Risk |
| DUPO Groundwater | IL1630350 | 3 | 1 | High Risk |
| ROBINSON-PALESTINE WATER COMMISSION Groundwater | IL0335030 | 2 | 1 | High Risk |
| FOX LAKE Groundwater | IL0970200 | 2 | 1 | High Risk |
| ROCK ISLAND ARSENAL, US ARMY Surface Water | IL1615387 | 2 | 1 | High Risk |
| MOUNT CARMEL GU | IL1850200 | 2 | 1 | High Risk |
| NEW BADEN Surface Water | IL0274700 | 1 | 1 | High Risk |
| HOMEWOOD Surface Water | IL0311350 | 1 | 1 | High Risk |
| IL AMERICAN-VALLEY VIEW Surface Water | IL0437350 | 1 | 1 | High Risk |
| FREEBURG Surface Water | IL1630600 | 1 | 1 | High Risk |
| FREEPORT Groundwater | IL1770200 | 1 | 1 | High Risk |
| ROCKTON Groundwater | IL2010350 | 1 | 1 | High Risk |
| CARY Groundwater | IL1110100 | 5 | 0 | Moderate |
| PEORIA HEIGHTS Groundwater | IL1434750 | 5 | 0 | Moderate |
| AURORA Surface Water | IL0894070 | 4 | 0 | Low Level |
| IL AMERICAN-STREATOR Surface Water | IL0995030 | 4 | 0 | Low Level |
| FOX RIVER GROVE Groundwater | IL1110200 | 4 | 0 | Low Level |
| MITCHELL PWD Surface Water | IL1195210 | 4 | 0 | Low Level |
| MILLSTADT Surface Water | IL1630850 | 4 | 0 | Low Level |
| LOCKPORT Groundwater | IL1970500 | 4 | 0 | Low Level |
| WILMINGTON Surface Water | IL1971100 | 4 | 0 | Low Level |
| BOND/MADISON WATER COMPANY Surface Water | IL0050020 | 3 | 0 | Low Level |
| WEE-MA-TUK WATER DISTRICT GU | IL0570040 | 3 | 0 | Low Level |
| CANTON, IL GU | IL0570250 | 3 | 0 | Low Level |
| JERSEY RWC Surface Water | IL0835300 | 3 | 0 | Low Level |
| ELGIN, IL Surface Water | IL0894380 | 3 | 0 | Low Level |
| WILLOW LAKE ESTATES MHP Surface Water | IL0894400 | 3 | 0 | Low Level |
| BRIGHTON Surface Water | IL1174160 | 3 | 0 | Low Level |
| GLEN CARBON Surface Water | IL1190300 | 3 | 0 | Low Level |
| IL AMERICAN-GRANITE CITY Surface Water | IL1195030 | 3 | 0 | Low Level |
| IL AMERICAN-ALTON Surface Water | IL1195150 | 3 | 0 | Low Level |
| MORO PWD Groundwater | IL1195250 | 3 | 0 | Low Level |
| PONTOON BEACH PWD Surface Water | IL1195300 | 3 | 0 | Low Level |
| SOUTH JACKSONVILLE Groundwater | IL1370400 | 3 | 0 | Low Level |
| CHILLICOTHE Groundwater | IL1430200 | 3 | 0 | Low Level |
| CHESTER Surface Water | IL1570100 | 3 | 0 | Low Level |
| CAHOKIA HEIGHTS Surface Water | IL1635000 | 3 | 0 | Low Level |
| IL AMERICAN-EAST ST LOUIS Surface Water | IL1635040 | 3 | 0 | Low Level |
| ROMEOVILLE Groundwater | IL1970900 | 3 | 0 | Low Level |
| QUINCY Surface Water | IL0010650 | 2 | 0 | Low Level |
| CALUMET CITY Surface Water | IL0310390 | 2 | 0 | Low Level |
| GENOA Groundwater | IL0370150 | 2 | 0 | Low Level |
| LAKE ZURICH Groundwater | IL0970850 | 2 | 0 | Low Level |
| LA SALLE Groundwater | IL0990300 | 2 | 0 | Low Level |
| CRYSTAL LAKE Groundwater | IL1110150 | 2 | 0 | Low Level |
| BETHALTO Groundwater | IL1190150 | 2 | 0 | Low Level |
| WOOD RIVER Groundwater | IL1191150 | 2 | 0 | Low Level |
| FOSTERBURG PWD Surface Water | IL1195220 | 2 | 0 | Low Level |
| SOUTHERN IL UNIVERSITY-EDWARDSVILLE Groundwater | IL1195550 | 2 | 0 | Low Level |
| COLUMBIA Surface Water | IL1330050 | 2 | 0 | Low Level |
| WATERLOO Surface Water | IL1330300 | 2 | 0 | Low Level |
| EAST MOLINE Surface Water | IL1610250 | 2 | 0 | Low Level |
| AMERICAN WATER OPER AND MAINTENANCE, LLC Surface Water | IL1635237 | 2 | 0 | Low Level |
| AQUA ILLINOIS-UNIVERSITY PARK Surface Water | IL1975030 | 2 | 0 | Low Level |
| ROCKFORD, IL Groundwater | IL2010300 | 2 | 0 | Low Level |
| BELVIDERE Groundwater | IL0070050 | 1 | 0 | Low Level |
| PANA Surface Water | IL0210500 | 1 | 0 | Low Level |
| CHARLESTON Surface Water | IL0290100 | 1 | 0 | Low Level |
| MATTOON Surface Water | IL0290250 | 1 | 0 | Low Level |
| SUMMIT Surface Water | IL0310060 | 1 | 0 | Low Level |
| MARKHAM Surface Water | IL0311770 | 1 | 0 | Low Level |
| OAK FOREST Surface Water | IL0312190 | 1 | 0 | Low Level |
| SOUTH HOLLAND Surface Water | IL0312970 | 1 | 0 | Low Level |
| CAROL STREAM Surface Water | IL0430200 | 1 | 0 | Low Level |
| ELMHURST Surface Water | IL0430350 | 1 | 0 | Low Level |
| ITASCA Groundwater | IL0430500 | 1 | 0 | Low Level |
| LAKE SARA AREA WATER CO-OP, INC. Surface Water | IL0495150 | 1 | 0 | Low Level |
| MINOOKA Groundwater | IL0630550 | 1 | 0 | Low Level |
| HAMILTON COUNTY WATER DISTRICT Surface Water | IL0651000 | 1 | 0 | Low Level |
| GENESEO Groundwater | IL0730500 | 1 | 0 | Low Level |
| MURPHYSBORO Surface Water | IL0770500 | 1 | 0 | Low Level |
| E J WATER COOP Groundwater | IL0790010 | 1 | 0 | Low Level |
| NORTHEAST MOUNT VERNON WATER COMPANY Surface Water | IL0810010 | 1 | 0 | Low Level |
| MOUNT VERNON Surface Water | IL0810300 | 1 | 0 | Low Level |
| WOODLAWN Surface Water | IL0810450 | 1 | 0 | Low Level |
| SUGAR GROVE Groundwater | IL0890850 | 1 | 0 | Low Level |
| ST CHARLES Groundwater | IL0894830 | 1 | 0 | Low Level |
| LIBERTYVILLE Surface Water | IL0970900 | 1 | 0 | Low Level |
| IL AMERICAN-PONTIAC Surface Water | IL1055030 | 1 | 0 | Low Level |
| MCHENRY Groundwater | IL1110600 | 1 | 0 | Low Level |
| MARENGO Groundwater | IL1110650 | 1 | 0 | Low Level |
| BLOOMINGTON, IL Surface Water | IL1130200 | 1 | 0 | Low Level |
| MOUNT ZION Surface Water | IL1150350 | 1 | 0 | Low Level |
| STAUNTON Surface Water | IL1171050 | 1 | 0 | Low Level |
| EDWARDSVILLE Groundwater | IL1190250 | 1 | 0 | Low Level |
| HIGHLAND Surface Water | IL1190550 | 1 | 0 | Low Level |
| TROY, IL Groundwater | IL1191000 | 1 | 0 | Low Level |
| ALEXANDER WATER DISTRICT Surface Water | IL1370020 | 1 | 0 | Low Level |
| JACKSONVILLE MX | IL1370200 | 1 | 0 | Low Level |
| DUQUOIN Surface Water | IL1450100 | 1 | 0 | Low Level |
| MOLINE Surface Water | IL1610450 | 1 | 0 | Low Level |
| ROCK ISLAND Surface Water | IL1610650 | 1 | 0 | Low Level |
| CASEYVILLE Surface Water | IL1630250 | 1 | 0 | Low Level |
| O FALLON Surface Water | IL1631100 | 1 | 0 | Low Level |
| SPRINGFIELD, IL Surface Water | IL1671200 | 1 | 0 | Low Level |
| AQUA ILLINOIS-VERMILION COUNTY Surface Water | IL1835120 | 1 | 0 | Low Level |
| WASHINGTON COUNTY WATER COMPANY Surface Water | IL1895600 | 1 | 0 | Low Level |
| FULTON Groundwater | IL1950250 | 1 | 0 | Low Level |
| ROCK FALLS Groundwater | IL1950450 | 1 | 0 | Low Level |
| SHOREWOOD, IL Groundwater | IL1975080 | 1 | 0 | Low Level |
| CRYSTAL LAWNS ADDITION IMPROVEMENT ASSOC Groundwater | IL1975480 | 1 | 0 | Low Level |
| CARTERVILLE Surface Water | IL1990150 | 1 | 0 | Low Level |
| HERRIN Surface Water | IL1990400 | 1 | 0 | Low Level |
| JOHNSTON CITY Surface Water | IL1990500 | 1 | 0 | Low Level |
| MARION Surface Water | IL1990550 | 1 | 0 | Low Level |
| CORINTH PWD Surface Water | IL1995120 | 1 | 0 | Low Level |
| IL AMERICAN-SOUTH BELOIT Groundwater | IL2010450 | 1 | 0 | Low Level |
| EISENHOWER ACADEMY Groundwater | IL3004572 | 1 | 0 | Low Level |