Tapcensus

Illinois

Lake County drinking water quality

535 active public water systems serve 718,007 people in Lake County. 322 are compliant, 213 had at least one EPA violation in the past three years, 8 are designated serious violators, and 24 carry a health flag.

Active systems 535 103 community systems
People served 718K by public water systems
Systems with violations 213 40% of active systems, past 3 years
Serious violators 8 24 systems carry a health flag

Needs attention

Highland Park Hospital IL3163253 · Non-Transient non-community system · Serves 2,800 5 rules violated in the past three years. Unresolved: Lead and Copper Rule and Public Notice Rule and Revised PN Rule.
Good Shepherd Hospital IL3130302 · Non-Transient non-community system · Serves 1,290 8 rules violated in the past three years. Unresolved: Lead and Copper Rule and Public Notice Rule and Revised PN Rule.
Camp Henry Horner/pool Pump House IL3095117 · Transient non-community system · Serves 920 3 rules violated in the past three years. Unresolved: Revised Total Coliform Rule and Public Notice Rule and Revised PN Rule.
Shops of Kildeer IL3141028 · Non-Transient non-community system · Serves 650 7 rules violated in the past three years. Unresolved: Lead and Copper Rule and Public Notice Rule and Revised PN Rule.
Gavin Central Elementary IL3002188 · Non-Transient non-community system · Serves 560 5 rules violated in the past three years. Unresolved: Lead and Copper Rule and Public Notice Rule and Revised PN Rule.
Jack and Lidias Resort IL3023564 · Transient non-community system · Serves 100 4 rules violated in the past three years. Unresolved: Revised Total Coliform Rule and Public Notice Rule and Revised PN Rule.
Camp Duncan Sorenson Lodge IL3095133 · Transient non-community system · Serves 25 4 rules violated in the past three years. Unresolved: Ground Water Rule and Public Notice Rule and Revised PN Rule.
Bluff Lake Lodges, Inc. IL0970240 · Antioch · Community water system · Serves 24 8 rules violated in the past three years. Unresolved: Lead and Copper Rule and Consumer Confidence Rule.
Round Lake Park IL0971600 · Round Lake Park · Community water system · Serves 4,900 4 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Camp Duncan Pool IL3095158 · Transient non-community system · Serves 960 4 rules violated in the past three years. Unresolved: Ground Water Rule and Public Notice Rule and Revised PN Rule.

19 more systems with a serious violator or health flag designation are in the lists below.

Community water systems

103 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
Lake County Pw Hawthorn Woods
Hawthorn Woods 		675 1 1
Cambridge Courts MHP
Northbrook 		658 2 0
Aqua Illinois-Ivanhoe
 650 0 0
Beach MHP
Zion 		624 1 0
West Shore Park Subdivision
 590 2 1
Lake View MHP
 568 1 0
Shoreline Trc MHP
 504 0 0
Lake Barrington
Lake Barrington 		500 0 0
Hilldale Manor Subdivision
 414 0 0
Lcpw Highland Lake Subdivision
 414 0 0
Allendale Association
 400 0 0
Royal Melbourne Homeowners Asn
Long Grove 		382 2 0
Whispering Lakes Water System, Inc.
 375 1 0
IL American-Del-Mar
 300 1 0
Ports Sullivan Lake Owners Association
 293 1 0
Schwermanns 2nd and 3rd Wtr Brd
 285 1 0
Aqua Illinois-Ravenna
 267 1 0
Fields of Long Grove
 267 1 1
Tanneron Bay Homeowners Association
 256 1 1
IL American-Valentine
 252 3 0
Aqua Illinois-Fairhaven Estates
 225 1 0
Ciel Senior Living
Vernon Hills 		225 1 1
Forest Lake Addition Lake CO PW
 225 0 0
Alden Long Grove Nursing Center
Long Grove 		218 0 0
Heiden Gardens Condos
 217 1 0
Sylvan Lake 1st Subdivision
 210 6 0
Briarcrest Sbdv Homeowners Association
 207 2 1
Towners Subdivision
 206 2 2
The Preserve at Long Grove
Long Grove 		204 5 1
Avantara Long Grove
Long Grove 		200 0 0
Diamond Lake MHP
 198 1 0
Prairie Trails of Long Grove
 189 1 0
West Shoreland Subdivision
 189 0 0
IL American-Char-Mar
 186 0 0
Wadsworth Oaks Subdivision
 185 1 0
Lake Bluff Estates MHP
Lake Bluff 		165 1 0
Duck Lake Well Owners Association
 141 4 2
Mount ST Joseph School Icf
 125 2 0
Lake Co. PW Arden Shores Estates
 105 0 0
Chain-O-Lakes MHP
 84 0 0
Promontory Pointe Homeowners Association
Long Grove 		78 2 1
Long Grove
Long Grove 		70 1 0
IL American-Port Barrington Shores
 67 0 0
Glenstone Sbdv HOA
 65 0 0
New Perspective Senior Living
Long Grove 		62 0 0
Elm Oak Mutual Water System
 50 1 0
Holly Hock Hill MHP
 47 1 0
Lcpw Oak Terrace
Libertyville 		45 0 0
Pauls MHP
 38 3 0
Dayspring Bible College
Mundelein 		30 1 0
Non-community systems (432: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Captain James a Lovell Fhcc
 12,100 6 2
Highland Park Hospital
 2,800 5 2
Baxter Health Care/hanline
 2,500 3 0
Good Shepherd Hospital
 1,290 8 2
Park Center of Kemper Lakes Aviands
 1,200 4 0
Woodlawn Middle/country Meadow Elem
 1,100 5 0
Circle K #6739
 1,000 0 0
Shell Minuteman
 1,000 0 0
Camp Duncan Pool
 960 4 2
Camp Independence
 960 4 2
Concorde Banquets
 950 0 0
FS Gas and Food Mart Inc.
 950 0 0
Camp Henry Horner/pool Pump House
 920 3 2
Quentin Road Bible Baptist School
 910 2 1
The Chapel (147876)
 900 1 0
ST Bede Church
 850 1 0
Fremont Elementary School K-2
 800 1 0
Saint Patricks Church
 800 0 0
The Grove Country Club
 800 0 0
Tristar Shell
 798 0 0
Northbrooks Sports Club
 750 0 0
Countryside Citgo
 700 0 0
North Barrington Elm School
 700 3 1
Marathon Lake Villa #112888
 650 0 0
Millburn School Dist #24
 650 2 0
Shops of Kildeer
 650 7 2
Fratellos Hot Dogs
 600 0 0
Harisumiran-Hindu Swaminarayan Temple
 600 0 0
Kildeer Countryside School
 600 5 0
Long Grove Community Church
 600 0 0
Love's Travel Stop/ Arby's
 600 0 0
Shanty Restaurant
 600 0 0
ST Raphael Church
 600 0 0
Gavin Central Elementary
 560 5 2
Northpoint Community Church
 550 0 0
Cubby Bear North
 524 0 0
Alpine Chapel
 500 0 0
Biltmore C C Main Building
 500 6 1
Dunkin Donuts Long Grove
 500 1 0
ST Marys of Fremont Church
 500 0 0
Supermart Shell
 500 0 0
Toors
 500 0 0
Quentin RD Bible Baptist CH
 499 2 1
Chain of Lakes Comm Bible Chur
 450 0 0
Emmons Grade School
 450 4 1
Farmington Bath & Tennis Club
 450 0 0
Fremont Intermediate School 3-5
 450 2 0
Twin Orchard Country Club
 450 3 0
Milburn Church
 440 0 0
Dover Straits
 435 0 0
Brunswick Deer Park Lanes
 400 0 0
Lindenhurst Clark
 400 0 0
Millburn School
 400 1 0
Phillips 66 Wadsworth
 400 0 0
ST Matthew Lutheran School
 400 1 0
Silo Restaurant
 375 1 0
Bilingual Rock Immersion School
 373 0 0
Als Tap #1
 350 0 0
Diamond Lake School
 350 3 0
Lord of Glory/gloryland Pre-Sc
 350 2 0
Newport School
 350 5 2
West Oak Middle School
 350 1 0
Sorelle
 345 0 0
Messiah Lutheran Presch and Kinder
 334 0 0
Fremont School Dist 6-8
 325 2 0
Gavin South School
 325 5 2
Trinity Evang Lutheran Church
 325 0 0
Full Moon Restaurant
 315 3 1
American Legion Post 703
 300 1 0
Antioch Amoco
 300 0 0
Apachi Day Camp
 300 6 2
Barrington Hills CC Clbhse 1&3
 300 3 1
Beach Bible Church
 300 0 0
Biltmore Country Beach/pool HD
 300 0 0
BP Quick Mart & Chen Jackpot
 300 2 1
Camp Hickory
 300 1 0
Grass Lake School
 300 1 0
Inland Harbor
 300 0 0
Long Meadow Community Church
 300 0 0
Oreganos Corner Cafe
 300 0 0
Point Pancake House
 300 0 0
Shell Gilmer Quick Mart
 300 0 0
Travel Centers of America
 300 1 0
Uma Gasoline/citgo
 300 0 0
Smith Professional Office Cntr
 285 2 0
Ben Watts Marina
 278 1 0
Browns Chicken
 250 0 0
Cross Point Church
 250 1 0
Epic Fitness LLC
 250 0 0
Evangelical Free Church of Wac
 250 0 0
Hindu Mandir
 250 0 0
Iglesia San Pablo
 250 2 2
Petite Lake Resort
 250 3 1
Quentin Collections/jimmy Johns
 250 0 0
The Pride of Lake County
 250 0 0
Vision United Methodist Church
 250 0 0
Whole Foods Mart Kildeer Well
 250 3 1
Illinois Central
 230 2 2
Saint Patrick School
 225 5 1
ST Bede School
 220 4 0
All 432 in the systems table
Inactive systems (1,948, 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.