Tap Truth EPA drinking water records, in plain English

County drinking water records

Lake County, IN drinking water systems

29 community water systems serve Lake County, IN, reporting 525,931 people served in all. A system that also serves other counties counts all of its customers here.

5 of them (17%) had at least one health-based violation in the last 10 years. 7 systems still have one unresolved.

16 rely mainly on groundwater and 13 on surface water, counting water bought from other systems.

Their lead service line inventories list 36,082 lead lines, 3,370 galvanized lines that must be replaced and 108,904 lines of unknown material.

2 more systems are placed in Lake County, IN 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
29
People served, sum of each system's own figure
525,931
Systems with a health-based violation, last 10 years
5
Systems with one unresolved
7
Lead service lines in inventories
36,082

Water systems serving Lake County

29 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
Indiana American Water - Northwest Gary, Merrillville and 12 more 210,510 Surface water 0 0 11,817
Hammond Water Works Department Hammond and Whiting 78,384 Surface water 1 0 22,380
Crown Point Water Works Crown Point 30,000 Purchased surface water 0 0 45
Schererville Water Department Schererville 30,000 Purchased surface water 0 0 6
East Chicago Water Works East Chicago 26,370 Surface water 0 0 1,732
St. John Municipal Water Utility St. John 25,700 Groundwater 0 0 0
Highland Water Works Highland 23,984 Purchased surface water 0 0 1
Munster Water Company Munster 23,894 Purchased surface water 0 2 0
Griffith Water Department Griffith 16,893 Purchased surface water 0 0 0
Dyer Water Department Dyer 16,800 Purchased surface water 0 0 20
Indiana American Water - Lowell Lowell 11,908 Groundwater under direct influence 5 0 0
Cuii - Twin Lakes Lakes of the Four Seasons, Winfield and 1 more 8,000 Groundwater 0 0 0
New Chicago Water Works New Chicago and Hobart 5,500 Purchased surface water 0 1 0
Whiting Water Department Whiting 4,900 Purchased surface water 0 0 74
Cedar Lake Water Works Cedar Lake 4,600 Groundwater 1 1 0
Cuii - Indiana Water Service Winfield and Merrillville 4,200 Purchased surface water 0 0 0
Aqua Indiana Water Company Outside cities and towns 1,350 Purchased groundwater 0 0 0
Cedar Lake - Robins Nest Cedar Lake and Schererville 950 Groundwater 0 1 0
Apple Valley Utilities, Inc. Outside cities and towns 712 Groundwater 0 0 0
Schneider Water Department Schneider 267 Groundwater 0 0 0
Lakeshore Subdivision Association, Inc. Cedar Lake 265 Groundwater 0 1 0
Fairway Regional Water District Lake Dalecarlia and Cedar Lake 210 Groundwater 1 1 0
Cedar Lake Mobile Home Park Cedar Lake 200 Groundwater 0 0 0
Crossings Mobile Home Park Merrillville 100 Groundwater 2 0 0
Noble Oaks Subdivision Water Association Cedar Lake and land outside it 70 Groundwater 0 0 7
Rockwell Shores Apartments Hobart and Merrillville 45 Groundwater 0 0 0
Oakwood Mobile Home Park Lowell and land outside it 45 Groundwater 0 0 0
Sunset Harbor Condominiums Cedar Lake 40 Groundwater 0 0 0
Cedar Gardens MHP Cedar Lake 34 Groundwater 0 1 0

Systems placed by county record in Lake County

2 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
Cedar Lake Bible Conference Grounds County on record 150 Groundwater 0 0 0
Bremerton Mobile Home Park County on record 79 Groundwater 0 0 0

Cities and towns in Lake County

22 places

Back to Indiana

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