All water systems in Illinois
724 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Flamingo Mine Lake #4 Fulton County |
25 | 0 | 0 | |
|
Flatfoot Lake HP 5127 Cook County |
25 | 0 | 0 | |
|
Flatfoot Lake HP 5127 Cook County |
25 | 0 | 0 | |
|
Four Lakes Forest Preserve Winnebago County |
25 | 0 | 0 | |
|
Fox Lake Health Clinic Lake County |
25 | 0 | 0 | |
|
Fox Lake True Value Lake County |
25 | 0 | 0 | |
|
FS Lake-Cook Farm and Garden Lake County |
25 | 0 | 0 | |
|
Gages Lake Picnic Grove Lake County |
25 | 0 | 0 | |
|
Goose Lake Club Grundy County |
25 | 0 | 0 | |
|
Goose Lake Club Grundy County |
25 | 0 | 0 | |
|
Goose Lake Club Main Well Grundy County |
25 | 0 | 0 | |
|
Goose Lake Prairie State Park (147389) Grundy County |
25 | 0 | 0 | |
|
Goose Lake Prairie Stt PK Unspec Pl In Co · Grundy County |
25 | 0 | 0 | |
|
Goose Lake Twp Hall Grundy County |
25 | 0 | 0 | |
|
Goose Lake Twp Hall Grundy County |
25 | 0 | 0 | |
|
Grand Bear Lakes Town Homes Assoc. WL10 LaSalle County |
25 | 0 | 0 | |
|
Grass Lake Marina INC Lake County |
25 | 0 | 0 | |
|
Grays Lake Packing Company Lake County |
25 | 0 | 0 | |
|
Grayslake Packing CO Lake County |
25 | 0 | 0 | |
|
Grayslake Packing CO Lake County |
25 | 0 | 0 | |
|
Grayslake Packing Company Lake County |
25 | 0 | 0 | |
|
Great Lakes Motel Lake County |
25 | 0 | 0 | |
|
Green Lake HP 6289 Cook County |
25 | 0 | 0 | |
|
Green Lake HP 6296 Cook County |
25 | 1 | 0 | |
|
Green Lake HP 6289 Cook County |
25 | 0 | 0 | |
|
Green Lake HP 6296 Cook County |
25 | 0 | 0 | |
|
Greenfield City Lake Greene County |
25 | 0 | 0 | |
|
Greenfield City Lake Greene County |
25 | 0 | 0 | |
|
Hanover Lake Animal Hospital DuPage County |
25 | 0 | 0 | |
|
Happy Hollow Lake Association Knox County |
25 | 0 | 0 | |
|
Hidden Lake Rock Island County |
25 | 0 | 0 | |
|
Hidden Lake Country Club Bureau County |
25 | 0 | 0 | |
|
Hidden Lakes Will County |
25 | 0 | 0 | |
|
Hidden Lakes Will County |
25 | 0 | 0 | |
|
Hide-A-Way Lakes INC Kendall County |
25 | 0 | 0 | |
|
Horseshoe Lake Cons Area Alexander County |
25 | 0 | 0 | |
|
Horseshoe Lake Stt PK Unspec Pl In Co · Madison County |
25 | 0 | 0 | |
|
Horsetail Lake 5044 Cook County |
25 | 0 | 0 | |
|
Horsetail Lake 5044 Cook County |
25 | 0 | 0 | |
|
Island Lake Wtr Cmpny Island Lake · Lake County |
25 | 0 | 0 | |
|
James Lakeside Inn Lake County |
25 | 0 | 0 | |
|
Jerry's Fishing Lake Champaign County |
25 | 0 | 0 | |
|
Jerry's Fishing Lake Champaign County |
25 | 0 | 0 | |
|
Josephs Marketplace Crystal Lake McHenry County |
25 | 0 | 0 | |
|
June Lake Sbdv Unspec Pl In Co · Effingham County |
25 | 0 | 0 | |
|
June Lake Subdivision Effingham County |
25 | 0 | 0 | |
|
June Lake Subdivision Effingham County |
25 | 0 | 0 | |
|
KA HO Lake Estates Ka Ho Lake Esta · Stephenson County |
25 | 0 | 0 | |
|
Kaufman's Lake Champaign County |
25 | 0 | 0 | |
|
Kellart Lake Kellart Lake · Stephenson County |
25 | 0 | 0 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules currently in violation at EPA's latest data refresh.
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.