Water company · 2025
Wessex Water's sewage record
23,012 discharges from 1,305 monitored storm overflows in 2025, for 178,831 hours in total. These are the Environment Agency's published figures.
23,012discharges
178,831hours
38monitors working under 90% of the year
The ten worst overflows
| Overflow | Into | Constituency | Discharges | Hours |
|---|---|---|---|---|
| Hurdcott Wastewater Treatment Works | River Bourne | Salisbury | 167 | 3,119 |
| Chew Stoke WwTW | River Chew | North East Somerset and Hanham | 139 | 2,529 |
| Martinstown Ps | The South Winterbourne(S) | West Dorset | 129 | 2,030 |
| Podimore - Behind Greystones - Sewage Treatment Works | Unnamed Tributary of the River Cary | Glastonbury and Somerton | 124 | 2,198 |
| Shrewton Water Recycling Centre | River Till | East Wiltshire | 116 | 2,679 |
| Chicksbridge Ps | River Bride(S) | West Dorset | 112 | 1,957 |
| Buckland Newton Wrc | River Lydden | West Dorset | 108 | 1,684 |
| Collingbourne Ducis Pumping Station | River Bourne | East Wiltshire | 106 | 730 |
| East Harptree Wrc | Tributary of River Chew | North East Somerset and Hanham | 99 | 1,283 |
| Muller Road CSO | Horfield Brook (S) | Bristol North West | 98 | 375 |
The constituencies it affects most
- West Dorset — 2,185 discharges from 77 overflows
- Glastonbury and Somerton — 2,064 discharges from 84 overflows
- Bath — 1,730 discharges from 103 overflows
- Bristol North West — 1,541 discharges from 88 overflows
- Frome and East Somerset — 1,326 discharges from 75 overflows
- North East Somerset and Hanham — 1,256 discharges from 42 overflows
- Yeovil — 1,117 discharges from 47 overflows
- Melksham and Devizes — 1,076 discharges from 58 overflows
- South Cotswolds — 1,000 discharges from 40 overflows
- North Dorset — 973 discharges from 42 overflows
If you are a Wessex 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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