Tapcensus

All water systems in Illinois

724 systems

SystemServesStatusRules violated, 3 yrUnresolved
Ida Lake GR 0 HP 4208
Cook County 		400 0 0
Kettle Lake 1210
Cook County 		400 0 0
Kettle Lake 1210
Cook County 		400 0 0
Kettle Lake 1212
Cook County 		400 0 0
Kettle Lake 1212
Cook County 		400 0 0
Kettle Moraine Lake 4 HP 120
Cook County 		400 0 0
Kettle Moraine Lake 4 HP 120
Cook County 		400 0 0
Kettle Moraine Lake HP 120
Cook County 		400 0 0
Kettle Moraine Lake HP 120
Cook County 		400 0 0
Lake Ave E GR 0 HP 1043
Cook County 		400 0 0
Lake Ave E GR 0 HP 1045
Cook County 		400 0 0
Lake Ave East 1092
Cook County 		400 0 0
Lake Ave East 1092
Cook County 		400 0 0
Maple Lake 5188
Cook County 		400 0 0
Maple Lake Boathouse 5188
Cook County 		400 0 0
Moon Lake Picnic Area 1208
Cook County 		400 0 0
Sauk Lake East GR 2 HP 6254
Cook County 		400 0 0
Tampier Lake 5321
Cook County 		400 3 1
Tampier Lake 5322
Cook County 		400 0 0
Tampier Lake 5223
Cook County 		400 0 0
Tampier Lake 5321
Cook County 		400 0 0
Tampier Lake 5322
Cook County 		400 0 0
Tampier Lake HP 532
Cook County 		400 0 0
Tampier Lake HP 532
Cook County 		400 0 0
Tri-Lakes Conservation&recclub
McLean County 		400 0 0
Turtlehead Lake 5064
Cook County 		400 0 0
Turtlehead Lake 5065
Cook County 		400 0 0
Turtlehead Lake 5064
Cook County 		400 0 0
Turtlehead Lake 5065
Cook County 		400 0 0
Wampum Lake 6277
Cook County 		400 0 0
Wampum Lake GR 1 HP 6276
Cook County 		400 0 0
University ST Mary of the Lake
Lake County 		365 2 2
Fox Lake True Value
Lake County 		320 0 0
Arlington Lakes Golf Club
Cook County 		300 0 0
Arlington Lakes Golf Club
Cook County 		300 0 0
Chain-O-Lakes State Park
Lake County 		300 0 0
Fox Lake Baptist Church
Lake County 		300 0 0
Indian Lakes Country Club
DuPage County 		300 0 0
Lake Shore Golf Course
Christian County 		300 0 0
Silver Lake Country Club
Lake County 		300 0 0
Silver Lake Country Club
Cook County 		300 0 0
Diamond Lake School Dist 76
Lake County 		295 0 0
Lake Zurich Community Church
Lake County 		270 0 0
Chain O'lakes ST PK Att Ray E
Lake County 		250 0 0
Gages Lake Picnic Grove
Lake County 		250 0 0
Goose Lake Prairie State Park
Grundy County 		250 0 0
Lakecrest Unit 5 Community
Coles County 		250 0 0
Univ of ST Mary of the Lake
Lake County 		205 0 0
Fox Lake Flea Market
Lake County 		200 0 0
Lake Barrington Ice Arena
Lake County 		200 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.