Water quality in Mascoutah, Illinois
Mascoutah is in St. Clair County. 54 active public water systems serve the county; 23 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in St. Clair County
27 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| American Water Oper and Maintenance, LLC |
6,779 | 0 | 4.9 mi | |
| S L M Water Commission |
385 | 1 | 5.4 mi | |
| Valley View Estates O Fallon |
580 | 2 | 6.5 mi | |
| Fsh Water Commission Smithton |
313 | 2 | 6.8 mi | |
| Lake Suzanne MHP Shiloh |
108 | 0 | 6.9 mi | |
| Lebanon Lebanon |
4,714 | 2 | 7.2 mi | |
| Summerfield Summerfield |
347 | 0 | 7.2 mi | |
| Freeburg Freeburg |
4,707 | 0 | 7.6 mi | |
| Meadowbrook MH Community, LLC Belleville |
463 | 4 | 8.0 mi | |
| Fayetteville Fayetteville |
490 | 0 | 8.6 mi | |
| O Fallon O Fallon |
46,603 | 1 | 9.6 mi | |
| Arapaho Village MHP Belleville |
368 | 0 | 10.8 mi | |
| ST Libory St Libory |
628 | 1 | 10.8 mi | |
| IL American-East ST Louis East St Louis |
131,368 | 0 | 12.2 mi | |
| Smithton Smithton |
4,381 | 1 | 12.9 mi | |
| New Athens New Athens |
1,970 | 1 | 13.1 mi | |
| Kaskaskia Water District New Athens |
0 | 1 | 13.1 mi | |
| Lenzburg Lenzburg |
616 | 1 | 14.9 mi | |
| Caseyville Caseyville |
13,798 | 1 | 15.2 mi | |
| Millstadt Millstadt |
4,071 | 0 | 15.8 mi | |
| Mound Pwd |
1,243 | 4 | 16.8 mi | |
| Marissa Marissa |
1,921 | 2 | 18.0 mi | |
| Southwestern IL Correctional Center East St Louis |
563 | 0 | 19.3 mi | |
| Cahokia Heights Cahokia |
12,528 | 0 | 19.4 mi | |
| Prairie Dupont Pwd |
1,863 | 0 | 21.4 mi |
Non-community systems in St. Clair County (26: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
New Baden Market Center |
25 | 0 | 0 | |
|
Walmart Supercenter 201 |
30 | 0 | 0 | |
|
Schnucks 205 Belleville |
25 | 0 | 0 | |
|
ST Clair County Foley Park |
200 | 0 | 0 | |
|
Millstadt Sportsmans Club |
25 | 1 | 0 | |
|
Quail Restoration Association |
25 | 0 | 0 | |
|
Karbans Knotty Pines |
200 | 1 | 0 | |
|
ST Michaels Church |
50 | 1 | 0 | |
|
Children of Promise |
50 | 5 | 2 | |
|
Walmart Supercenter 1418 |
25 | 0 | 0 | |
|
Twice the Ice Freeburg |
50 | 0 | 0 | |
|
New Athens Hanft PK Larry Webe |
30 | 0 | 0 | |
|
Schnucks (138297) |
30 | 0 | 0 | |
|
Schnucks (138313) |
30 | 0 | 0 | |
|
Schnucks (138321) |
30 | 0 | 0 | |
|
Twice the Ice Smithton |
30 | 0 | 0 | |
|
BK Ice Cahokia |
25 | 0 | 0 | |
|
Dierbergs |
25 | 0 | 0 | |
|
Freeburg Ice Man |
25 | 0 | 0 | |
|
Fresh Thyme Farmers Market Fairview Hgts |
25 | 0 | 0 | |
|
Scarlett's Cabaret |
25 | 3 | 1 | |
|
Schnucks #148 |
25 | 0 | 0 | |
|
Schnucks 177 O Fallon |
25 | 0 | 0 | |
|
Twice the Ice Lebanon |
25 | 0 | 0 | |
|
Twice the Ice Mascoutah |
25 | 0 | 0 | |
|
Twice the Ice ST Libory |
25 | 2 | 0 |
About this data
Water systems are matched to St. Clair County, nearest to Mascoutah first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Illinois records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.