Tap Truth EPA drinking water records, in plain English

County drinking water records

Hancock County, IL drinking water systems

11 community water systems serve Hancock County, IL, reporting 11,851 people served in all. A system that also serves other counties counts all of its customers here.

3 of them (27%) had at least one health-based violation in the last 10 years. 3 systems still have one unresolved.

7 rely mainly on groundwater and 4 on surface water, counting water bought from other systems.

Their lead service line inventories list 82 lead lines, 242 galvanized lines that must be replaced and 1,018 lines of unknown material.

Community water systems
11
People served, sum of each system's own figure
11,851
Systems with a health-based violation, last 10 years
3
Systems with one unresolved
3
Lead service lines in inventories
82

Water systems serving Hancock County

11 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
Hamilton Hamilton 2,753 Surface water 0 0 51
Carthage Carthage 2,510 Groundwater 1 0 4
Warsaw Warsaw 1,480 Surface water 0 0 0
Laharpe La Harpe 1,200 Groundwater 5 1 3
Nauvoo Nauvoo 1,200 Surface water 0 0 0
Dallas City Dallas City 788 Purchased groundwater 0 1 1
Augusta Augusta 553 Purchased groundwater 0 0 0
Bowen Bowen 494 Purchased groundwater 3 0 0
Plymouth Plymouth 460 Groundwater 0 1 23
West Point West Point 248 Purchased groundwater 0 0 0
Elvaston Elvaston 165 Purchased surface water 0 0 0

Cities and towns in Hancock County

11 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