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County drinking water records

DuPage County, IL drinking water systems

47 community water systems serve DuPage County, IL, reporting 1,109,748 people served in all. A system that also serves other counties counts all of its customers here.

2 of them (4%) had at least one health-based violation in the last 10 years. 13 systems still have one unresolved.

6 rely mainly on groundwater and 41 on surface water, counting water bought from other systems.

Their lead service line inventories list 22,824 lead lines, 2,207 galvanized lines that must be replaced and 22,384 lines of unknown material.

4 more systems are placed in DuPage 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
47
People served, sum of each system's own figure
1,109,748
Systems with a health-based violation, last 10 years
2
Systems with one unresolved
13
Lead service lines in inventories
22,824

Water systems serving DuPage County

47 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
Aurora Aurora 183,000 Surface water 0 0 16,463
Naperville Naperville, Lisle and 2 more 156,406 Purchased surface water 0 0 265
Wheaton Wheaton 53,970 Purchased surface water 0 0 238
Downers Grove Downers Grove 49,425 Purchased surface water 0 0 790
Elmhurst Elmhurst 45,000 Purchased surface water 0 0 1,247
Lombard Lombard 44,476 Purchased surface water 0 1 1,699
Bartlett Bartlett 41,500 Purchased surface water 0 0 83
Carol Stream Carol Stream 39,854 Purchased surface water 0 0 0
Addison Addison 38,017 Purchased surface water 0 0 17
Hanover Park Hanover Park 37,470 Purchased surface water 0 1 0
Woodridge Woodridge 33,566 Purchased surface water 0 1 0
Glendale Heights Glendale Heights 33,176 Purchased surface water 0 0 0
Glen Ellyn Glen Ellyn 28,850 Purchased surface water 0 1 283
West Chicago West Chicago 25,166 Groundwater 0 0 448
Lisle Lisle 24,233 Purchased surface water 0 1 11
Westmont Westmont 24,161 Purchased surface water 0 0 142
Roselle Roselle 22,897 Purchased surface water 0 0 185
Villa Park Villa Park and Oakbrook Terrace 22,263 Purchased surface water 0 0 105
Bloomingdale Bloomingdale 22,018 Purchased surface water 0 1 0
Darien Darien 21,751 Purchased surface water 0 0 No inventory
Bensenville Bensenville 18,537 Purchased surface water 0 0 620
Hinsdale Hinsdale 17,900 Purchased surface water 0 0 181
Wood Dale Wood Dale 14,012 Purchased surface water 0 2 0
Warrenville Warrenville 12,350 Groundwater 0 0 0
Burr Ridge Burr Ridge and Willow Springs 11,192 Purchased surface water 0 0 0
Winfield Winfield 9,835 Purchased surface water 0 0 0
Itasca Itasca 9,506 Purchased surface water 0 0 0
Oak Brook Oak Brook 9,400 Purchased surface water 0 0 0
Willowbrook Willowbrook 9,000 Purchased surface water 0 2 0
Clarendon Hills Clarendon Hills 8,702 Purchased surface water 0 0 44
Southeast Regional Water Facility Outside cities and towns 6,940 Purchased surface water 0 0 0
IL American-Valley View Outside cities and towns 6,721 Purchased surface water 0 0 0
IL American-Dupage Utility Lisle and land outside it 6,613 Purchased surface water 0 0 0
Aqua Illinois-Oak Brook Oakbrook Terrace and Oak Brook and land outside them 5,361 Purchased surface water 0 1 No inventory
IL American-Liberty Ridge West Outside cities and towns 3,307 Purchased surface water 0 0 0
Glen Ellyn Heights Subdivision Outside cities and towns 1,931 Purchased surface water 0 1 0
Steeple Run SBDV Outside cities and towns 1,931 Purchased surface water 0 0 0
IL American-Arrowhead Outside cities and towns 1,581 Purchased surface water 0 0 0
Oakbrook Terrace Oakbrook Terrace 1,440 Purchased surface water 0 0 0
York Township Water System Oakbrook Terrace 1,423 Purchased surface water 0 1 0
IL American-Country Club Outside cities and towns 1,014 Purchased surface water 0 0 0
Liberty Park Homeowners Association Outside cities and towns 950 Groundwater 1 1 3
Prairie Path Water Company-Clarendon Outside cities and towns 850 Groundwater 1 0 0
North Regional Water Fac Outside cities and towns 770 Groundwater 0 0 0
IL American-Lombard Heights Lombard 679 Purchased surface water 0 0 0
IL American-Liberty Ridge East Glen Ellyn and Wheaton and land outside them 320 Purchased surface water 0 0 0
Pleasant Ridge MHP Winfield 284 Groundwater 0 1 0

Systems placed by county record in DuPage County

4 systems

EPA has no service area map for some of these systems, and the maps it has for the others do not line up with their own records. 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
Hobson Valley Water System County on record 400 Purchased surface water 0 0 0
Wood Dale Estates County on record 145 Purchased surface water 1 1 0
Polo Dr and Saddle Rd Subdivision County on record 93 Groundwater 0 0 0
Du Page Water Commission County on record 1 Purchased surface water 0 0 0

Cities and towns in DuPage County

30 places

Back to Illinois

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