Tap Truth EPA drinking water records, in plain English

County drinking water records

Lake County, IL drinking water systems

87 community water systems serve Lake County, IL, reporting 650,244 people served in all. A system that also serves other counties counts all of its customers here.

11 of them (13%) had at least one health-based violation in the last 10 years. 29 systems still have one unresolved.

50 rely mainly on groundwater and 37 on surface water, counting water bought from other systems.

77 systems filed a lead service line inventory listing 10,275 lead lines, 244 galvanized lines that must be replaced and 29,693 lines of unknown material.

18 more systems are placed in Lake County, IL by the county their records name because they have no service area map that lines up with their own records, so they are listed apart and not counted here.

Community water systems
87
People served, sum of each system's own figure
650,244
Systems with a health-based violation, last 10 years
11
Systems with one unresolved
29
Lead service lines in inventories
10,275

Water systems serving Lake County

87 systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
Waukegan Waukegan 87,149 Surface water 0 1 4,589
Buffalo Grove Buffalo Grove 43,212 Purchased surface water 0 0 0
Vernon Hills - Lake Co PW Vernon Hills, Long Grove and 1 more 33,207 Purchased surface water 0 0 0
Mundelein Mundelein 31,500 Purchased surface water 0 0 46
Gurnee Gurnee 30,193 Purchased surface water 0 0 0
Highland Park Highland Park 30,176 Surface water 0 0 1,754
Round Lake Beach Round Lake Beach and Round Lake Heights 27,200 Purchased surface water 0 0 0
Zion Zion 24,442 Purchased surface water 0 2 5
Grayslake Grayslake 21,248 Purchased surface water 0 0 334
Libertyville Libertyville 20,500 Purchased surface water 0 0 284
Lake Zurich Lake Zurich, Kildeer and 3 more 19,759 Groundwater 0 0 38
Lake Forest Lake Forest 19,642 Surface water 0 0 274
Deerfield Deerfield 19,196 Purchased surface water 0 1 297
Round Lake Round Lake 18,430 Purchased surface water 0 0 14
North Chicago North Chicago 16,813 Surface water 2 2 849
Wildwood Subdivision - Lake Co PW Gages Lake 14,832 Purchased surface water 0 1 0
Lindenhurst Lindenhurst 14,500 Purchased surface water 0 0 0
Antioch Antioch and Lake Catherine 14,175 Groundwater 0 1 207
Wauconda Wauconda 14,084 Purchased surface water 0 1 165
Fox Lake Fox Lake 11,780 Groundwater 0 1 70
Barrington Barrington and Inverness 10,327 Groundwater 0 0 623
Lake Villa Lake Villa 8,829 Purchased surface water 0 0 0
Beach Park Beach Park 8,710 Purchased surface water 0 0 0
Island Lake Island Lake and Port Barrington 8,066 Groundwater 0 0 0
Lincolnshire Lincolnshire 7,940 Purchased surface water 0 1 0
Volo Volo 6,629 Purchased surface water 1 0 0
Winthrop Harbor Winthrop Harbor 6,565 Purchased surface water 0 6 0
Grandwood Park Subdivision - Lake Co PW Grandwood Park 5,751 Purchased surface water 0 0 0
Lake Bluff Lake Bluff and Knollwood 5,600 Purchased surface water 0 1 111
Park City Park City 5,425 Purchased surface water 0 0 0
Highwood Highwood 5,335 Surface water 0 1 65
Round Lake Park Round Lake Park 4,900 Purchased surface water 1 7 No inventory
Fox River Grove Fox River Grove and Lake Barrington 4,702 Groundwater 1 0 549
LCPW - Pekara Subdivision Riverwoods and land outside it 3,711 Purchased surface water 0 0 0
Riverwoods Riverwoods 3,618 Purchased surface water 0 0 0
Hainesville Hainesville 3,528 Groundwater 0 0 0
Aqua Illinois-Hawthorn Woods Hawthorn Woods 3,065 Groundwater 1 0 0
Lakemoor Lakemoor 2,720 Groundwater 0 2 0
Fox Lake Hills Subdivision - Lake Co PW Fox Lake Hills and land outside it 2,628 Purchased surface water 0 0 No inventory
Round Lake Heights Round Lake Heights 2,622 Purchased surface water 0 0 0
Saddlebrook Farms Round Lake Park 2,558 Groundwater 0 1 0
Park City MHP Park City 2,460 Purchased surface water 0 0 0
Lake Barrington Shores Subdivsion North Barrington and Lake Barrington 2,300 Groundwater 1 3 No inventory
Aqua Illinois-Rockwell Lakemoor 1,762 Groundwater 0 0 0
LCPW - Brooks Farm Subdivision Outside cities and towns 1,563 Groundwater 0 0 0
Green Oaks Green Oaks 1,470 Purchased surface water 1 4 No inventory
Wynstone Water Company North Barrington 1,424 Groundwater 0 1 0
Tower Lakes Lake Barrington and Tower Lakes 1,372 Groundwater 0 0 0
Countryside Lake Subdivision -Lake Co PW Hawthorn Woods and Long Grove and land outside them 1,287 Groundwater 0 0 1
Prairie Path Water Company-Harbor Ridge Outside cities and towns 1,064 Groundwater 0 0 0
Lake County PW- Hawthorn Woods Kildeer and Hawthorn Woods 675 Purchased groundwater 0 1 0
Cambridge Courts MHP Round Lake 658 Purchased surface water 0 0 0
Aqua Illinois-Ivanhoe Outside cities and towns 650 Groundwater 0 0 0
Beach MHP Beach Park and Zion 624 Purchased surface water 0 0 0
West Shore Park Subdivision Outside cities and towns 590 Groundwater 0 1 No inventory
Lake View MHP Beach Park 568 Purchased surface water 0 0 0
Lake Barrington Lake Barrington 500 Groundwater 0 0 0
Hilldale Manor Subdivision Outside cities and towns 414 Groundwater 0 0 0
Royal Melbourne Homeowners Asn Deer Park and Long Grove 382 Groundwater 0 0 0
Whispering Lakes Water System, Inc. North Chicago 375 Groundwater 0 0 0
LCPW - Highland Lake Subdivision Round Lake Park 330 Groundwater 0 0 0
Ports Sullivan Lake Owners Association Lakemoor 293 Groundwater 0 0 No inventory
Schwermanns 2nd and 3rd Wtr BRD Outside cities and towns 285 Groundwater 0 0 0
Fields of Long Grove Long Grove 267 Groundwater 0 1 0
Aqua Illinois-Ravenna Long Grove 267 Groundwater 0 0 0
Tanneron Bay Homeowners Association Outside cities and towns 256 Groundwater 1 1 0
Prairie Path Water Company-Valentine Outside cities and towns 252 Groundwater 0 0 0
Aqua Illinois-Fairhaven Estates Outside cities and towns 225 Groundwater 0 0 0
Forest Lake Addition - Lake Co PW Forest Lake 225 Purchased groundwater 0 0 0
Heiden Gardens Condos Outside cities and towns 217 Groundwater 0 0 0
Sylvan Lake 1st Subdivision Outside cities and towns 210 Groundwater 0 3 No inventory
Briarcrest SBDV Homeowners Association Long Grove 207 Groundwater 0 1 0
Towners Subdivision Long Grove 206 Groundwater 1 4 No inventory
Diamond Lake MHP Outside cities and towns 198 Groundwater 0 0 No inventory
Prairie Trails of Long Grove Long Grove 189 Groundwater 0 1 No inventory
West Shoreland Subdivision Outside cities and towns 189 Groundwater 0 0 0
Wadsworth Oaks Subdivision Wadsworth 185 Groundwater 0 0 0
Lake Bluff Estates MHP Lake Bluff 165 Groundwater 0 0 0
Duck Lake Well Owners Association Outside cities and towns 141 Groundwater 1 5 No inventory
Lake Co. PW - Arden Shores Estates Outside cities and towns 105 Purchased surface water 0 0 0
Chain-O-Lakes MHP Outside cities and towns 84 Groundwater 0 0 0
Promontory Pointe Homeowners Association Long Grove 78 Groundwater 0 1 0
Prairie Path -Port Barrington Shores Port Barrington 67 Groundwater 0 0 0
Glenstone SBDV HOA Long Grove 65 Groundwater 0 0 0
Elm Oak Mutual Water System Outside cities and towns 50 Groundwater 2 0 0
LCPW - Oak Terrace Libertyville and land outside it 45 Groundwater 0 0 0
Pauls MHP Outside cities and towns 38 Groundwater 0 1 0

Systems placed by county record in Lake County

18 systems

EPA has no service area map for these systems. They are placed by the county their records name (the counties EPA lists them serving, or the county coded in their IDs where EPA lists none), and without a map they are not counted in the figures above.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
Great Lakes Naval Training Station County on record 23,000 Surface water 0 0 0
Bannockburn County on record 1,013 Purchased surface water 0 0 2
Shoreline TRC MHP County on record 504 Purchased surface water 0 0 0
Allendale Association County on record 400 Groundwater 0 0 0
Prairie Path Water Company-Del-Mar County on record 300 Purchased surface water 0 0 0
Brookdale Senior Living - Vernon Hills County on record 225 Purchased surface water 0 1 0
Alden Long Grove Nursing Center County on record 218 Groundwater 0 0 0
The Preserve at Long Grove County on record 204 Groundwater 0 1 0
Avantara Long Grove County on record 200 Groundwater 0 0 0
Prairie Path Water Company-Char-Mar County on record 186 Purchased surface water 0 0 0
Mount St Joseph School Icf County on record 125 Groundwater 0 1 No inventory
Long Grove County on record 70 Groundwater 0 0 0
New Perspective Senior Living County on record 62 Groundwater 0 0 0
Holly Hock Hill MHP County on record 47 Groundwater 0 0 0
Dayspring Bible College County on record 30 Groundwater 0 0 0
Bluff Lake Lodges, Inc. County on record 24 Groundwater 1 2 0
Lake County Public Water District County on record 1 Surface water 0 0 0
Central Lake County Jawa County on record Not reported Surface water 0 0 0

Cities and towns in Lake County

49 places

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Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations