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South Dakota · EPA ECHO (national)
Mitchell, City of SSCS
Permit SD0023361
—
No waterway impact reported
Reported events
11
Total volume
4.5M gal
Reached waterways
0 (0%)
Reporting since
2024
What caused the overflows
Other / Unknown
5
Grease / FOG
2
Rainfall / Flooding
2
Equipment Failure
2
Reported overflow events (showing 11 of 11)
| Date | Volume | Cause | Reached water | Receiving water |
|---|---|---|---|---|
| Mar 20, 2026 | 1.3M gal | Other / Unknown | — | Cell # 3 |
| Dec 16, 2025 | 1.3M gal | Equipment Failure | — | Cell 4 at the Lagoons |
| Nov 20, 2025 | 1.9M gal | Equipment Failure | — | Cell 4 at the Lagoons |
| Nov 20, 2025 | 22K gal | Other / Unknown | — | Cell # 3 |
| Sep 30, 2025 | 250 gal | Grease / FOG | — | — |
| Jun 25, 2025 | 200 gal | Grease / FOG | — | — |
| Jun 12, 2025 | 167 gal | Other / Unknown | — | — |
| May 15, 2025 | — | Other / Unknown | — | Firesteel Creek |
| Apr 18, 2025 | 330 gal | Other / Unknown | — | Ditch by Lake Mitchell. Water never entered lake |
| Jun 24, 2024 | — | Rainfall / Flooding | — | Dry Run Creek |
| Jun 21, 2024 | — | Rainfall / Flooding | — | Dry Run Creek |
Source: EPA ECHO (national). Volumes are utility-reported estimates. Some events lack precise coordinates or volumes.