All rankings
Illinois · EPA ECHO (national)
MASCOUTAH STP, CITY OF SSCS
Permit IL0025291
—
No waterway impact reported
Reported events
10
Total volume
1.9M gal
Reached waterways
0 (0%)
Reporting since
2025
What caused the overflows
Rainfall / Flooding
9
Equipment Failure
1
Reported overflow events (showing 10 of 10)
| Date | Volume | Cause | Reached water | Receiving water |
|---|---|---|---|---|
| Mar 5, 2026 | 520 gal | Equipment Failure | — | — |
| Jul 17, 2025 | — | Rainfall / Flooding | — | Mascoutah surface water ditch |
| Apr 5, 2025 | 312K gal | Rainfall / Flooding | — | Mascoutah surface water Ditch |
| Apr 5, 2025 | 252K gal | Rainfall / Flooding | — | Mascoutah surface water Ditch |
| Apr 5, 2025 | 252K gal | Rainfall / Flooding | — | Mascoutah surface water Ditch |
| Apr 5, 2025 | 288K gal | Rainfall / Flooding | — | Mascoutah surface water Ditch |
| Apr 5, 2025 | 288K gal | Rainfall / Flooding | — | Mascoutah surface water Ditch |
| Apr 5, 2025 | 252K gal | Rainfall / Flooding | — | Mascoutah surface water Ditch |
| Apr 5, 2025 | 90K gal | Rainfall / Flooding | — | Mascoutah surface water Ditch |
| Apr 5, 2025 | 189K gal | Rainfall / Flooding | — | Mascoutah surface water Ditch |
Source: EPA ECHO (national). Volumes are utility-reported estimates. Some events lack precise coordinates or volumes.