Water company · 2025
South West Water's sewage record
41,351 discharges from 1,297 monitored storm overflows in 2025, for 351,182 hours in total. These are the Environment Agency's published figures.
41,351discharges
351,182hours
49monitors working under 90% of the year
The ten worst overflows
| Overflow | Into | Constituency | Discharges | Hours |
|---|---|---|---|---|
| Shop Stw_so_shop | Tributary of Coombe Valley Stream | North Cornwall | 243 | 4,967 |
| Salcombe Regis WwTW CSO | Salcombe Regis Stream | Honiton and Sidmouth | 235 | 5,446 |
| Horns Cross Sewage Treatment Works | Tributary of River Yeo | Torridge and Tavistock | 230 | 2,035 |
| Town Quay Pumping Station | River Fowey Estuary (E) | St Austell and Newquay | 198 | 635 |
| Abbotsham WwTW | Kenwith Stream | Torridge and Tavistock | 196 | 205 |
| Rewe Wastewater Treatment Works | River Culm | Exmouth and Exeter East | 175 | 2,568 |
| High Bickington STW | Tributary of Langham Lake(S) | Torridge and Tavistock | 173 | 1,912 |
| Brayford STW | River Bray(S) | North Devon | 172 | 3,763 |
| Ashreigny WwTW CSO | Tributary of Mully Brook | Torridge and Tavistock | 167 | 1,511 |
| St Neot STW | St Neot River | South East Cornwall | 167 | 2,031 |
The constituencies it affects most
- Torridge and Tavistock — 5,444 discharges from 101 overflows
- Central Devon — 4,640 discharges from 137 overflows
- South Devon — 3,631 discharges from 104 overflows
- South East Cornwall — 3,565 discharges from 100 overflows
- North Cornwall — 2,998 discharges from 84 overflows
- North Devon — 2,811 discharges from 80 overflows
- Honiton and Sidmouth — 2,542 discharges from 75 overflows
- South West Devon — 2,461 discharges from 63 overflows
- Truro and Falmouth — 1,804 discharges from 72 overflows
- Plymouth Sutton and Devonport — 1,622 discharges from 66 overflows
If you are a South West Water customer, you cannot switch supplier, but you can claim compensation when they miss a legal standard. What you are owed →
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