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Massachusetts · EPA ECHO (national)
MWRA - Deer Island Sewer Collection System
Permit MA0103284
—
No waterway impact reported
Reported events
2
Total volume
16.1M gal
Reached waterways
0 (0%)
Reporting since
2026
What caused the overflows
Other / Unknown
2
Reported overflow events (showing 2 of 2)
| Date | Volume | Cause | Reached water | Receiving water |
|---|---|---|---|---|
| Mar 16, 2026 | 6.0M gal | Other / Unknown | — | Massachusetts Bay |
| Mar 16, 2026 | 10.1M gal | Other / Unknown | — | Massachusetts Bay |
Source: EPA ECHO (national). Volumes are utility-reported estimates. Some events lack precise coordinates or volumes.