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New Hampshire · EPA ECHO (national)
NASHUA SANITARY SEWER SYSTEM
Permit NH0100170
—
No waterway impact reported
Reported events
7
Total volume
5.2M gal
Reached waterways
0 (0%)
Reporting since
2025
What caused the overflows
Equipment Failure
5
Root Intrusion
1
Other / Unknown
1
Reported overflow events (showing 7 of 7)
| Date | Volume | Cause | Reached water | Receiving water |
|---|---|---|---|---|
| Dec 28, 2025 | 22K gal | Equipment Failure | — | Nashua River |
| Nov 25, 2025 | 100 gal | Other / Unknown | — | — |
| Nov 24, 2025 | 50 gal | Equipment Failure | — | — |
| Nov 17, 2025 | 500 gal | Equipment Failure | — | — |
| Oct 27, 2025 | 1K gal | Equipment Failure | — | — |
| Sep 10, 2025 | 100 gal | Equipment Failure | — | — |
| Aug 19, 2025 | 5.2M gal | Root Intrusion | — | Cold Brook |
Source: EPA ECHO (national). Volumes are utility-reported estimates. Some events lack precise coordinates or volumes.