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South Dakota · EPA ECHO (national)
Pierre, City of SSCS
Permit SD0020176
—
No waterway impact reported
Reported events
15
Total volume
596K gal
Reached waterways
0 (0%)
Reporting since
2023
What caused the overflows
Equipment Failure
7
Other / Unknown
7
Grease / FOG
1
Reported overflow events (showing 15 of 15)
| Date | Volume | Cause | Reached water | Receiving water |
|---|---|---|---|---|
| Mar 26, 2026 | 495K gal | Equipment Failure | — | — |
| Mar 25, 2026 | 100K gal | Other / Unknown | — | Sanitation system of CIty of Pierre |
| Mar 24, 2026 | 1 gal | Other / Unknown | — | City of Pierre Wastewater Facility |
| Aug 26, 2025 | 50 gal | Other / Unknown | — | — |
| Aug 26, 2025 | 50 gal | Other / Unknown | — | Sanitation system of CIty of Pierre |
| Nov 1, 2024 | 50 gal | Equipment Failure | — | — |
| Jul 23, 2024 | 100 gal | Equipment Failure | — | — |
| May 3, 2024 | 20 gal | Grease / FOG | — | — |
| Jan 14, 2024 | 100 gal | Equipment Failure | — | — |
| Sep 22, 2023 | 50 gal | Equipment Failure | — | — |
| Aug 14, 2023 | 50 gal | Equipment Failure | — | — |
| Jun 16, 2023 | 10 gal | Other / Unknown | — | — |
| Jun 7, 2023 | 0 gal | Other / Unknown | — | — |
| May 1, 2023 | 25 gal | Equipment Failure | — | — |
| Apr 23, 2023 | 100 gal | Other / Unknown | — | — |
Source: EPA ECHO (national). Volumes are utility-reported estimates. Some events lack precise coordinates or volumes.