Monthly watchdog
Cornwall sewage report card
August 2026 — recorded storm-overflow activity across Cornwall.
2160
Spill events
352
Outfalls that spilled
+237%
vs previous month
641
Previous month's events
In August 2026, Glanmor recorded 2160 storm-overflow spill events across Cornwall from 352 separate outfalls. That's 237% more than the previous month. Figures are from South West Water's near-real-time monitoring and may be revised.
Worst offenders in August 2026
| # | Outfall / receiving water | Spill events |
|---|---|---|
| 1 | RIVER KENSEY (S) | 64 |
| 2 | RIVER TORRIDGE | 37 |
| 3 | LOOE RIVER (HARBOUR) (E) | 36 |
| 4 | RIVER FOWEY ESTUARY (E) | 33 |
| 5 | RIVER FOWEY ESTUARY(E) | 31 |
| 6 | FOWEY ESTUARY (E) | 31 |
| 7 | PENRYN RIVER(E) | 26 |
| 8 | TRIB OF LITTLE MERE RIVER | 26 |
| 9 | RIVER KENSEY | 24 |
| 10 | TRIB OF RIVER TORRIDGE | 22 |
See the worst-polluters leaderboard for annual totals, or download the data.
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