All rankings
New Hampshire · EPA ECHO (national)
LEBANON-HANOVER SANITARY SEWER SYSTEM
Permit NH0100366
—
No waterway impact reported
Reported events
9
Total volume
39K gal
Reached waterways
0 (0%)
Reporting since
2022
What caused the overflows
Equipment Failure
5
Root Intrusion
2
Rainfall / Flooding
1
Other / Unknown
1
Reported overflow events (showing 9 of 9)
| Date | Volume | Cause | Reached water | Receiving water |
|---|---|---|---|---|
| Apr 1, 2026 | 50 gal | Equipment Failure | — | — |
| Aug 12, 2025 | 2K gal | Equipment Failure | — | — |
| Jul 12, 2025 | 500 gal | Equipment Failure | — | Mascoma Lake |
| Oct 22, 2024 | 400 gal | Equipment Failure | — | — |
| Oct 9, 2024 | 36K gal | Rainfall / Flooding | — | — |
| Jul 18, 2024 | 1 gal | Other / Unknown | — | — |
| Sep 8, 2023 | 10 gal | Root Intrusion | — | — |
| May 30, 2023 | 100 gal | Root Intrusion | — | — |
| Jun 4, 2022 | 10 gal | Equipment Failure | — | — |
Source: EPA ECHO (national). Volumes are utility-reported estimates. Some events lack precise coordinates or volumes.