Illinois
Will County drinking water quality
327 active public water systems serve 622,273 people in Will County. 103 are compliant, 224 had at least one EPA violation in the past three years, 24 are designated serious violators, and 6 carry a health flag.
Needs attention
17 more systems with a serious violator or health flag designation are in the lists below.
Community water systems
52 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Joliet Joliet |
160,000 | 4 | 0 | |
|
IL American-West Suburban Bolingbrook |
73,978 | 0 | 0 | |
|
Romeoville Romeoville |
50,458 | 0 | 0 | |
|
Plainfield Plainfield |
50,000 | 1 | 0 | |
|
New Lenox New Lenox |
29,200 | 0 | 0 | |
|
IL American-Homer Township |
24,543 | 0 | 0 | |
|
Frankfort Frankfort |
24,000 | 2 | 1 | |
|
Lockport Lockport |
23,100 | 4 | 0 | |
|
Crest Hill Crest Hill |
20,223 | 10 | 2 | |
|
Mokena Mokena |
19,887 | 1 | 0 | |
|
Shorewood Shorewood |
18,645 | 3 | 0 | |
|
Channahon Channahon |
13,380 | 1 | 0 | |
|
Manhattan Manhattan |
10,340 | 1 | 0 | |
|
Crete Crete |
8,386 | 4 | 0 | |
|
Aqua Illinois-University Park Pk Forest South |
7,002 | 3 | 0 | |
|
Braidwood Braidwood |
6,194 | 2 | 0 | |
|
Wilmington Wilmington |
5,700 | 7 | 0 | |
|
Monee Monee |
5,148 | 3 | 1 | |
|
Aqua Illinois-Willowbrook Manhattan |
5,100 | 0 | 0 | |
|
Beecher Beecher |
4,713 | 1 | 1 | |
|
Aqua Illinois-Peotone Peotone |
4,182 | 0 | 0 | |
|
Elwood Elwood |
2,229 | 3 | 1 | |
|
Rockdale Rockdale |
2,012 | 5 | 3 | |
|
Southeast Joliet SD Joliet |
2,000 | 8 | 3 | |
|
Pheasant Lake Estates MHP Peotone |
1,528 | 0 | 0 | |
|
Crystal Lawns Addition Improvement Assoc Joliet |
1,435 | 3 | 1 | |
|
Bonnie Brae Forest Manor Sndst Lockport |
1,338 | 1 | 0 | |
|
East Moreland Wtr Service Assn New Lenox |
1,320 | 4 | 3 | |
|
IL American-Arbury |
1,225 | 0 | 0 | |
|
Stateville Correctional Center Joliet |
992 | 5 | 2 | |
|
Lockport Heights SD Lockport |
984 | 0 | 0 | |
|
Gateway MHP Frankfort |
884 | 0 | 0 | |
|
Lakewood Shores Improvement Association Joliet |
868 | 3 | 1 | |
|
IL American-Cherry Hill |
833 | 0 | 0 | |
|
Aqua Illinois-Village Woods Crete |
800 | 0 | 0 | |
|
IL American-Camelot |
777 | 0 | 0 | |
|
Ingalls Park Subdivision Joliet |
744 | 2 | 1 | |
|
Channahon East Channahon |
630 | 1 | 0 | |
|
College View Subdivision Lockport |
570 | 2 | 1 | |
|
Godley Public Water District |
566 | 1 | 1 | |
|
Joliet Inpatient Treatment Center Joliet |
486 | 0 | 0 | |
|
Balmoral Heights Subdivision Crete |
400 | 0 | 0 | |
|
Imperial MHC Shorewood |
328 | 0 | 0 | |
|
Aqua Illinois-Oakview Joliet |
312 | 2 | 0 | |
|
Sunnyland Subdivision Joliet |
300 | 4 | 2 | |
|
Joliet Treatment Center Joliet |
217 | 0 | 0 | |
|
Dixie Estates Subdivision Crete |
180 | 0 | 0 | |
|
IL American-Central States Dst |
117 | 0 | 0 | |
|
Joliet Community MHP |
96 | 2 | 1 | |
|
Criswell Court MHP Joliet |
94 | 8 | 3 |
Non-community systems (275: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
Inactive systems (1,859, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Illinois records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.