Tap Truth EPA drinking water records, in plain English

County drinking water records

St. Clair County, IL drinking water systems

26 community water systems serve St. Clair County, IL, reporting 260,741 people served in all. A system that also serves other counties counts all of its customers here.

7 of them (27%) had at least one health-based violation in the last 10 years. 8 systems still have one unresolved.

3 rely mainly on groundwater and 23 on surface water, counting water bought from other systems.

25 systems filed a lead service line inventory listing 789 lead lines, 366 galvanized lines that must be replaced and 71,095 lines of unknown material.

3 more systems are placed in St. Clair 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
26
People served, sum of each system's own figure
260,741
Systems with a health-based violation, last 10 years
7
Systems with one unresolved
8
Lead service lines in inventories
789

Water systems serving St. Clair County

26 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
IL American-East St Louis Belleville, East St. Louis and 10 more 131,368 Surface water 0 0 784
O Fallon O'Fallon and Fairview Heights 46,603 Purchased surface water 0 0 0
Cahokia Heights Cahokia Heights and Sauget 15,250 Purchased surface water 0 0 0
Caseyville Caseyville 13,798 Purchased surface water 0 1 0
Mascoutah Mascoutah 8,759 Purchased surface water 0 1 5
American Water Oper and Maintenance, LLC Scott AFB and Belleville 6,779 Purchased surface water 0 0 0
Lebanon Lebanon 4,714 Purchased surface water 0 0 0
Freeburg Freeburg 4,707 Purchased surface water 0 0 0
Dupo Dupo 4,684 Groundwater 0 0 0
New Baden New Baden 4,178 Purchased surface water 0 0 0
Millstadt Millstadt 4,071 Purchased surface water 0 0 0
Smithton Smithton 4,006 Purchased surface water 0 0 0
New Athens New Athens 1,970 Purchased surface water 1 0 0
Marissa Marissa 1,921 Purchased surface water 1 1 0
Prairie Dupont PWD Outside cities and towns 1,863 Purchased surface water 0 0 0
Mound PWD Outside cities and towns 1,500 Groundwater 1 8 No inventory
St Libory St. Libory 628 Groundwater 0 1 0
Lenzburg Lenzburg 616 Purchased surface water 1 0 0
Valley View Estates Shiloh and O'Fallon 580 Purchased surface water 0 0 0
Meadowbrook MH Community, LLC Belleville and land outside it 463 Purchased surface water 3 3 0
Fayetteville Fayetteville 441 Purchased surface water 0 0 0
Hecker Hecker and land outside it 429 Purchased surface water 1 4 0
S L M Water Commission Outside cities and towns 385 Surface water 0 0 0
Arapaho Village MHP Belleville 368 Purchased surface water 0 0 0
Summerfield Summerfield 347 Purchased surface water 0 0 0
FSH Water Commission Smithton and land outside it 313 Purchased surface water 1 1 0

Systems placed by county record in St. Clair County

3 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
Southwestern IL Correctional Center County on record 563 Purchased surface water 0 0 0
Ildu Lepere MHP, LLC County on record 250 Purchased surface water 0 2 0
Kaskaskia Water District County on record Not reported Surface water 1 0 0

Cities and towns in St. Clair County

25 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