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Illinois Tap Water Quality

EPA water quality data for 150 community water systems serving 652,429+ people in Illinois. Click any system to see violations, lead testing results, and a safety grade.

IL AMERICAN-CHAMPAIGN GODFREY, IL · 150,000 people · Groundwater BERWYN BERWYN, IL · 57,250 people · Surface Water Purchased QUINCY QUINCY, IL · 42,000 people · Surface Water BELVIDERE BELVIDERE, IL · 25,070 people · Groundwater MATTOON MATTOON, IL · 19,500 people · Surface Water BELLWOOD BELLWOOD, IL · 19,156 people · Surface Water Purchased ALSIP ALSIP, IL · 19,063 people · Surface Water Purchased CHARLESTON CHARLESTON, IL · 17,286 people · Surface Water RANTOUL RANTOUL, IL · 13,000 people · Groundwater U OF I-CHAMPAIGN CHAMPAIGN, IL · 13,000 people · Groundwater Purchased TAYLORVILLE TAYLORVILLE, IL · 12,806 people · Surface Water SUMMIT SUMMIT, IL · 10,875 people · Surface Water Purchased CLEAR WATER SERVICE CORP MATTOON, IL · 8,900 people · Groundwater GREENVILLE GREENVILLE, IL · 8,310 people · Surface Water PRINCETON PRINCETON, IL · 7,832 people · Groundwater ABS WATER COOP CLAYTON, IL · 6,858 people · Groundwater Purchased BOND/MADISON WATER COMPANY POCAHONTAS, IL · 6,645 people · Surface Water Purchased MAHOMET MAHOMET, IL · 6,580 people · Groundwater AQUA ILLINOIS-CANDLEWICK DVN KANKAKEE, IL · 6,426 people · Groundwater BEARDSTOWN BEARDSTOWN, IL · 5,951 people · Groundwater CLARK-EDGAR RWD MARSHALL, IL · 5,801 people · Groundwater PANA PANA, IL · 5,800 people · Surface Water MILL CREEK PWD QUINCY, IL · 5,755 people · Groundwater SPRING VALLEY SPRING VALLEY, IL · 5,582 people · Groundwater EASTERN ILLINOIS UNIVERSITY CHARLESTON, IL · 5,500 people · Surface Water Purchased SANGAMON VALLEY PWD MAHOMET, IL · 5,300 people · Groundwater FLORA FLORA, IL · 5,233 people · Surface Water Purchased BERKELEY BERKELEY, IL · 5,214 people · Surface Water Purchased BREESE BREESE, IL · 4,772 people · Surface Water CALHOUN COUNTY RWD HARDIN, IL · 4,675 people · Groundwater NEW BADEN NEW BADEN, IL · 4,178 people · Surface Water Purchased MARSHALL MARSHALL, IL · 3,947 people · Groundwater EMBARRAS AREA WATER DISTRICT CHARLESTON, IL · 3,750 people · Groundwater Purchased IL AMERICAN-TOLONO GODFREY, IL · 3,604 people · Groundwater Purchased CARLYLE CARLYLE, IL · 3,373 people · Surface Water CASEY CASEY, IL · 3,274 people · Groundwater Purchased MOUNT STERLING MT. STERLING, IL · 3,271 people · Groundwater Purchased SAVANNA SAVANNA, IL · 3,020 people · Groundwater SOUTH PALOS TWSP SANITARY DIST PALOS PARK, IL · 2,800 people · Surface Water Purchased TRENTON TRENTON, IL · 2,742 people · Surface Water Purchased AVISTON AVISTON, IL · 2,545 people · Surface Water Purchased CLAYTON-CAMP POINT WATER COMMISSION CAMP POINT, IL · 2,434 people · Groundwater POPLAR GROVE POPLAR GROVE, IL · 2,372 people · Groundwater SOUTHWATER INC TAMMS, IL · 2,185 people · Groundwater THOMSON MAXIMUM SECURITY CENTER THOMSON, IL · 2,166 people · Groundwater Purchased IL AMERICAN-FISHER GODFREY, IL · 2,026 people · Groundwater CLAY COUNTY WATER INC FLORA, IL · 2,015 people · Surface Water Purchased CLINTON COUNTY EAST PWD CENTRALIA, IL · 1,980 people · Surface Water Purchased POPLAR GROVE SOUTH POPLAR GROVE, IL · 1,877 people · Groundwater CARLYLE NORTH WATER COMPANY, INC. CARLYLE, IL · 1,850 people · Surface Water Purchased DE PUE DEPUE, IL · 1,838 people · Groundwater IL AMERICAN-CAIRO GODFREY, IL · 1,821 people · Groundwater CARLYLE SOUTHWEST PWD CENTRALIA, IL · 1,815 people · Surface Water Purchased CENTRAL ALEXANDER CNTY PWD OLIVE BRANCH, IL · 1,763 people · Groundwater Purchased ST ROSE PWD ST ROSE, IL · 1,688 people · Surface Water Purchased WESTERN IL CORRECTIONAL CENTER MT. STERLING, IL · 1,600 people · Groundwater Purchased KINCAID KINCAID, IL · 1,561 people · Surface Water Purchased GERMANTOWN GERMANTOWN, IL · 1,537 people · Surface Water Purchased VIRGINIA VIRGINIA, IL · 1,514 people · Groundwater LANARK LANARK, IL · 1,504 people · Groundwater MOUNT CARROLL MT CARROLL, IL · 1,479 people · Groundwater FOUR SEASONS MHP PROVO, UT · 1,468 people · Groundwater Purchased SUNSET MHP NORTHBROOK, IL · 1,400 people · Surface Water Purchased CENTRALIA CORRECTIONAL SITE CENTRALIA, IL · 1,397 people · Surface Water Purchased PAYSON PAYSON, IL · 1,386 people · Groundwater AQUA ILLINOIS-PHILO KANKAKEE, IL · 1,378 people · Groundwater Purchased CAPRON CAPRON, IL · 1,343 people · Groundwater ASHLAND ASHLAND, IL · 1,333 people · Surface Water Purchased ASSUMPTION ASSUMPTION, IL · 1,315 people · Groundwater WALNUT WALNUT, IL · 1,311 people · Groundwater TAYLORVILLE CORRECTIONAL CENTER TAYLORVILLE, IL · 1,300 people · Surface Water Purchased LADD LADD, IL · 1,263 people · Groundwater ALBERS ALBERS, IL · 1,231 people · Surface Water Purchased LOUISVILLE LOUISVILLE, IL · 1,201 people · Surface Water Purchased HOMER HOMER, IL · 1,200 people · Groundwater MARTINSVILLE MARTINSVILLE, IL · 1,200 people · Groundwater Purchased CAMP POINT CAMP POINT, IL · 1,190 people · Groundwater Purchased SOUTH BARRINGTON GENEVA, IL · 1,175 people · Groundwater EDINBURG EDINBURG, IL · 1,068 people · Groundwater MORRISONVILLE MORRISONVILLE, IL · 1,068 people · Groundwater THOMASBORO THOMASBORO, IL · 1,066 people · Groundwater HOFFMAN RURAL WATER COMPANY CARLYLE, IL · 1,015 people · Surface Water Purchased MILLEDGEVILLE MILLEDGEVILLE, IL · 989 people · Groundwater CLAY CITY CLAY CITY, IL · 957 people · Groundwater Purchased MENDON MENDON, IL · 953 people · Groundwater Purchased STONINGTON STONINGTON, IL · 932 people · Groundwater BECKEMEYER BECKEMEYER, IL · 913 people · Surface Water Purchased GIFFORD GIFFORD, IL · 911 people · Groundwater MCCLURE-EAST CAPE PWD MCCLURE, IL · 910 people · Groundwater Purchased WYANET WYANET, IL · 886 people · Groundwater SHARPSBURG AND NEIGHBORING AREA WATER SY STONINGTON, IL · 868 people · Groundwater Purchased ILUR LIBERTY COMMONS MHP LLC CROFTON, MD · 865 people · Groundwater Purchased IL AMERICAN-HARDIN GODFREY, IL · 839 people · Groundwater CHANDLERVILLE CHANDLERVILLE, IL · 838 people · Groundwater ADAMS COUNTY WATER DISTRICT NO 1 PALOMA, IL · 833 people · Groundwater Purchased SHEFFIELD KEWANEE, IL · 821 people · Groundwater SHANNON SHANNON, IL · 801 people · Groundwater NEW MEMPHIS PWD NEW MEMPHIS, IL · 800 people · Surface Water Purchased POPLAR GROVE WEST-COUNTRYSIDE POPLAR GROVE, IL · 790 people · Groundwater LAMOILLE LA MOILLE, IL · 750 people · Groundwater OGDEN OGDEN, IL · 750 people · Groundwater TISKILWA TISKILWA, IL · 740 people · Groundwater OAKLAND OAKLAND, IL · 739 people · Groundwater Purchased COOKS MILLS WATER ASSOCIATION MATTOON, IL · 720 people · Groundwater GREENVIEW ESTATES MHP BELVIDERE, IL · 710 people · Groundwater Purchased CLAYTON CLAYTON, IL · 709 people · Groundwater Purchased POCAHONTAS AVISTON, IL · 697 people · Surface Water Purchased SHADOW WOOD MHP CHAMPAIGN, IL · 680 people · Groundwater Purchased WESTFIELD WESTFIELD, IL · 678 people · Groundwater Purchased ARENZVILLE RURAL WATER COOPERATIVE ARENZVILLE, IL · 675 people · Groundwater Purchased DALZELL PERU, IL · 663 people · Groundwater TAMMS TAMMS, IL · 653 people · Groundwater Purchased ASHMORE ASHMORE, IL · 637 people · Groundwater BARTELSO BARTELSO, IL · 635 people · Groundwater URSA URSA, IL · 626 people · Groundwater Purchased KEYESPORT KEYESPORT, IL · 625 people · Surface Water Purchased GOLDEN GOLDEN, IL · 620 people · Groundwater Purchased LIBERTY LIBERTY, IL · 609 people · Groundwater Purchased DAMIANSVILLE DAMIANSVILLE, IL · 602 people · Surface Water Purchased BEDFORD PARK BEDFORD PARK, IL · 602 people · Surface Water Purchased THOMSON PERU, IL · 580 people · Groundwater MULBERRY GROVE MULBERRY GROVE, IL · 548 people · Surface Water Purchased XENIA XENIA, IL · 542 people · Surface Water Purchased CHADWICK CHADWICK, IL · 523 people · Groundwater TOVEY TOVEY, IL · 512 people · Surface Water Purchased FRANCISCAN SISTERS OF CHICAGO LEMONT, IL · 505 people · Groundwater Purchased UNION-YORK WATER DISTRICT WEST UNION, IL · 501 people · Groundwater HERITAGE OF RANTOUL CROFTON, MD · 500 people · Groundwater Purchased CHERRY PERU, IL · 490 people · Groundwater BUDA PERU, IL · 482 people · Groundwater MOUNT AUBURN MT. AUBURN, IL · 480 people · Groundwater Purchased VERSAILLES VERSAILLES, IL · 478 people · Groundwater OHIO OHIO, IL · 465 people · Groundwater PARADISE MHP PHOENIX, AZ · 460 people · Surface Water Purchased HOFFMAN PATOKA, IL · 452 people · Surface Water Purchased OAK LAWN MHP POPLAR GROVE, IL · 450 people · Groundwater Purchased LANGLEYVILLE PWD LANGLEYVILLE, IL · 450 people · Surface Water Purchased SORENTO AVISTON, IL · 429 people · Surface Water Purchased NEPONSET NEPONSET, IL · 427 people · Groundwater ARENZVILLE ARENZVILLE, IL · 419 people · Groundwater CASS RURAL WATER DISTRICT ARENZVILLE, IL · 403 people · Groundwater Purchased IL VETERANS HOME (QUINCY) QUINCY, IL · 401 people · Surface Water Purchased SEYMOUR WATER DISTRICT SEYMOUR, IL · 392 people · Groundwater Purchased FOUNTAIN VALLEY MHP RANTOUL, IL · 375 people · Groundwater LONGACRE ESTATES MHP FARMINGTON HILLS, MI · 375 people · Surface Water Purchased ILUR WOODS EDGE MHP LLC CROFTON, MD · 373 people · Groundwater Purchased HUMBOLDT HUMBOLDT, IL · 361 people · Surface Water Purchased IVESDALE IVESDALE, IL · 360 people · Groundwater EJ WATER-DEWEY DIETERICH, IL · 350 people · Groundwater PANAMA AVISTON, IL · 343 people · Surface Water Purchased