Storm overflow register · 2025 annual return

Wessex Water storm overflows, 2025

Wessex Water reported 1,346 storm overflows in England for 2025. Together they recorded 24,442 spills over 190,666 hours, an average of 18.2 spills per overflow against 20.4 across England. That ranks 6 of 10 companies, where 1 is the fewest spills per overflow. Counting the same overflows in both years, spills were down 45% on 2024.

220 overflows did not spill · 62 spilled more than 60 times · 1,308 had monitors working for 90% of the year or more · 242 sewage treatment works with overflows

Hours spilling by month, 2025

Hours spilling, all Wessex Water overflows, from the start/stop records. Spills running across a month end are split between the months.

All Wessex Water storm overflows

Sorted by hours spilling. Open an overflow for its permit, location, reasons for high spills and improvement status.

Overflow	Discharges to	Spills 2025	Hours 2025	Spills vs 2024	Monitor uptime
Canal Terrace CSO Overflow on sewer network Company site name BATHAMPTON M H K EA ID / permit WXW00227 · 100510/CS/01 Outlet location ST7723366713 (OS grid reference) · View on Apple Maps WFD catchment Bristol Avon (By Bk to Netham Weir) (GB109053027371) 2024 spills / hours 36 / 31 Long-term average 23.5 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 5.4 hours spilling →	River Avon	15	5.4	down 58%	99%
Roundway Hospital CSO Overflow on sewer network Company site name DEVIZES ROUNDWAY HOSPITAL EA ID / permit WXW00941 · 102809 Outlet location SU0094059670 (OS grid reference) · View on Apple Maps WFD catchment Poulshot Str - source to conf Summerham Bk (GB109053022190) 2024 spills / hours 17 / 27 Long-term average 9.8 spills a year (monitored since 2019) Investigation Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 5.4 hours spilling →	Summerham Brook (S)	6	5.4	down 65%	100%
Wellow Wastewater Treatment Works Inlet overflow at sewage works Sewage works Wellow Company site name WELLOW INLET EA ID / permit WXW01206 · 010092 Outlet location ST7442858143 (OS grid reference) · View on Apple Maps WFD catchment Wellow Bk - Snails Bk to Bristol Avon (GB109053022271) 2024 spills / hours 55 / 209 Long-term average 32.0 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement completed, UWWTR improvement completed Volume & pollution Estimate from 5.3 hours spilling →	Wellow Brook	2	5.3	down 96%	100%
Bude Avenue Football Pitch CSO Overflow on sewer network Company site name BRISTOL BUDE AVENUE FOOTBALL PITCH EA ID / permit WXW00209 · 102877 Outlet location ST5611874456 (OS grid reference) · View on Apple Maps WFD catchment BRISTOL AVON (GB530905415405) 2024 spills / hours 28 / 12 Long-term average 15.2 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 5.3 hours spilling →	River Avon via SWS (Estuarine)	16	5.3	down 43%	100%
Cattle Market Overflow on sewer network Company site name BATH RIVERSIDE WALK OLD CATTLE MARKET WALCOT EA ID / permit WXW00236 · 010873 Outlet location ST7514265194 (OS grid reference) · View on Apple Maps WFD catchment Bristol Avon (By Bk to Netham Weir) (GB109053027371) 2024 spills / hours 25 / 70 Long-term average 12.0 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 5.2 hours spilling →	River Avon	7	5.2	down 72%	95%
Parliament Row CSO Overflow on sewer network Company site name MALMESBURY PARLIAMENT ROW EA ID / permit WXW00843 · EPRJB3797NC Outlet location ST9353486763 (OS grid reference) · View on Apple Maps WFD catchment Sherston Avon (GB109053027690) 2024 spills / hours 20 / 18 Long-term average 13.5 spills a year (monitored since 2024) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 5.1 hours spilling →	River Avon (Sherston Branch)	7	5.1	down 65%	94%
63 Cheap Street CSO Overflow on sewer network Company site name SHERBORNE JUNCTION HOUND STREET AND CHEAP STREET EA ID / permit WXW00047 · EPRJB3790DC Outlet location ST6408216250 (OS grid reference) · View on Apple Maps WFD catchment Yeo (GB108052015630) 2024 spills / hours 22 / 6.6 Long-term average 19.8 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 5.1 hours spilling →	River Yeo via SWS	23	5.1	up 5%	100%
56 Hotwell Road CSO Overflow on sewer network Company site name BRISTOL HOTWELLS ROAD EAST EA ID / permit WXW00044 · 102900 Outlet location ST5769572507 (OS grid reference) · View on Apple Maps WFD catchment BRISTOL AVON (GB530905415405) 2024 spills / hours 15 / 8.0 Long-term average 14.3 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 5.1 hours spilling →	Floating Harbour	7	5.1	down 53%	97%
Wareham North Bridge Storm discharge at pumping station EA ID / permit WXW01307 · Unpermitted Outlet location SY9215387815 (OS grid reference) · View on Apple Maps WFD catchment POOLE HARBOUR (GB520804415800) Shellfish water Poole Bay; Poole Harbour North; Poole Harbour South; Poole Harbour West 2024 spills / hours 10 / 13 Long-term average 6.5 spills a year (monitored since 2024) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 5.1 hours spilling →	River Piddle	3	5.1	down 70%	100%
West Quay PS Storm discharge at pumping station Company site name BRIDGWATER WEST QUAY DRAWBRIDGE EA ID / permit WXW01225 · 102693 Outlet location ST3001037410 (OS grid reference) · View on Apple Maps WFD catchment Not part of a river WB catchment Bathing water Burnham Jetty North 2024 spills / hours 4 / 13 Long-term average 1.6 spills a year (monitored since 2017) Investigation No investigation activity in reporting period Improvement Operational improvement completed Volume & pollution Estimate from 5.0 hours spilling →	River Parrett (E)	1	5.0	down 75%	100%
Broadmead CSO Overflow on sewer network Company site name BRISTOL BROADMEAD / PENN STREET EA ID / permit WXW00192 · 101091 Outlet location ST5938373282 (OS grid reference) · View on Apple Maps WFD catchment Frome (Brist) - Bradley Bk to conf Floating Hbr (GB109053027840) 2024 spills / hours 5 / 8.0 Long-term average 4.3 spills a year (monitored since 2023) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 5.0 hours spilling →	River Frome via SWS	2	5.0	down 60%	97%
Bewdley Road CSO Overflow on sewer network Company site name BATH BEWDLEY ROAD EA ID / permit WXW00130 · NPSWQD002415 Outlet location ST7536064290 (OS grid reference) · View on Apple Maps WFD catchment Bristol Avon (By Bk to Netham Weir) (GB109053027371) 2024 spills / hours 31 / 65 Long-term average 16.9 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 4.9 hours spilling →	River Avon via SWS	15	4.9	down 52%	94%
Alderton STW Inlet overflow at sewage works Sewage works Alderton Company site name ALDERTON INLET EA ID / permit WXW00066 · 103246 Outlet location ST8405083620 (OS grid reference) · View on Apple Maps WFD catchment Luckington Bk (GB109053027665) 2024 spills / hours 4 / 27 Long-term average 3.0 spills a year (monitored since 2024) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.9 hours spilling →	Trib of Luckington Brook(S)	2	4.9	down 50%	100%
Cranford Avenue CSO Overflow on sewer network Company site name WEYMOUTH CRANFORD AVENUE EA ID / permit WXW00339 · 401190 Outlet location SY6859780667 (OS grid reference) · View on Apple Maps WFD catchment Not part of a river WB catchment Bathing water Weymouth Lodmoor 2024 spills / hours 10 / 3.1 Long-term average 8.1 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 4.9 hours spilling →	Trib of Weymouth Bay (via SWS)	17	4.9	up 70%	96%
Foundary Lane CSO Overflow on sewer network Company site name BRISTOL COOMBE BROOK TANK RIDGEWAY PLAYING FIELDS NR VERA ROAD EA ID / permit WXW00442 · 101644 Outlet location ST6233074960 (OS grid reference) · View on Apple Maps WFD catchment Frome (Brist) - Bradley Bk to conf Floating Hbr (GB109053027840) 2024 spills / hours 6 / 4.5 Long-term average 3.6 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.8 hours spilling →	Coombe Brook via SWS	3	4.8	down 50%	97%
Oakdale Road CSO Overflow on sewer network Company site name BRISTOL AMENITY LAND OPP NO.63 QUAKERS ROAD EA ID / permit WXW00817 · 101434 Outlet location ST6495078410 (OS grid reference) · View on Apple Maps WFD catchment Frome (Brist) - conf Laddon Bk to conf Folly Bk (GB109053027820) 2024 spills / hours 2 / 0.4 Long-term average 1.4 spills a year (monitored since 2021) Investigation Operational investigation ongoing Improvement Operational improvement completed Volume & pollution Estimate from 4.8 hours spilling →	Trib of Stockwell via SWS	3	4.8	up 50%	100%
Locksbrook Road CSO Overflow on sewer network Company site name BATH LOCKSBROOK ROAD R/O NO 10 EA ID / permit WXW00633 · EPRJB3798AB Outlet location ST7345964995 (OS grid reference) · View on Apple Maps WFD catchment Bristol Avon (By Bk to Netham Weir) (GB109053027371) 2024 spills / hours 25 / 60 Long-term average 19.8 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 4.7 hours spilling →	River Avon via SWS	16	4.7	down 36%	100%
Derham Road CSO Overflow on sewer network Company site name BRISTOL DERHAM ROAD R/O NO 31 EA ID / permit WXW00362 · 101820 Outlet location ST5729768434 (OS grid reference) · View on Apple Maps WFD catchment The Malago - source to conf R Avon (Brist New Cut) (GB109053021970) 2024 spills / hours 3 / 9.7 Long-term average 1.7 spills a year (monitored since 2023) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.7 hours spilling →	Trib of the Malago	1	4.7	down 67%	100%
192 Cranbrook Road Overflow on sewer network Company site name BRISTOL CRANBROOK ROAD O/S NO 192 EA ID / permit WXW00013 · 011793 Outlet location ST5861075072 (OS grid reference) · View on Apple Maps WFD catchment Frome (Brist) - Bradley Bk to conf Floating Hbr (GB109053027840) 2024 spills / hours 26 / 124 Long-term average 22.0 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement Operational improvement ongoing Volume & pollution Estimate from 4.7 hours spilling →	Cranbrook Brook via SWS	15	4.7	down 42%	96%
Muller Road Allotments CSO Overflow on sewer network Company site name BRISTOL MULLER ROAD ALLOTMENTS EA ID / permit WXW00764 · 101727 Outlet location ST6013875495 (OS grid reference) · View on Apple Maps WFD catchment Frome (Brist) - Bradley Bk to conf Floating Hbr (GB109053027840) 2024 spills / hours 22 / 20 Long-term average 19.5 spills a year (monitored since 2022) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 4.7 hours spilling →	Boiling Wells Lane Stream	11	4.7	down 50%	100%
Lucklands Road Combined Sewer of Overflow on sewer network Company site name BATH LUCKLANDS ROAD O/S LAWN COTTAGE EA ID / permit WXW00660 · 012180 Outlet location ST7345964995 (OS grid reference) · View on Apple Maps WFD catchment Bristol Avon (By Bk to Netham Weir) (GB109053027371) 2024 spills / hours 30 / 24 Long-term average 23.2 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing Improvement Operational improvement completed Volume & pollution Estimate from 4.7 hours spilling →	The River Avon via SWS	14	4.7	down 53%	100%
Charmouth Sewage Disposal Works Storm tank at sewage works Sewage works Charmouth Company site name CHARMOUTH STORM TANKS STORM TANK EA ID / permit WXW00257 · 401625 Outlet location SY3717093740 (OS grid reference) · View on Apple Maps WFD catchment Char (GB108044009790) Bathing water Charmouth West 2024 spills / hours 12 / 148 Long-term average 4.7 spills a year (monitored since 2017) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 4.7 hours spilling →	Lyme Bay(C) & River Char(S)	2	4.7	down 83%	100%
Chickerell Boys Club CSO Overflow on sewer network Company site name WEYMOUTH CHICKERELL ROAD BOYS CLUB EA ID / permit WXW00266 · 400897 Outlet location SY6758078730 (OS grid reference) · View on Apple Maps WFD catchment WEY (GB510804415700) Shellfish water Portland Harbour East; Portland Harbour West 2024 spills / hours 21 / 3.2 Long-term average 15.8 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.6 hours spilling →	Weymouth Harbour(E)	20	4.6	down 5%	95%
Chaffcombe Near War Memorial Inlet Inlet overflow at sewage works Sewage works Chaffcombe Near War Memorial EA ID / permit WXW00244 · Unpermitted Outlet location ST3521010290 (OS grid reference) · View on Apple Maps WFD catchment Isle - Upper (GB108052015160) 2024 spills / hours 26 / 8.4 Long-term average 14.5 spills a year (monitored since 2024) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.6 hours spilling →	Trib of River Isle (S)	3	4.6	down 88%	100%
Warminster - Weymouth Street R/O 23 - Combined Sewer Overflow Overflow on sewer network EA ID / permit WXW01354 · Unpermitted Outlet location ST8734844869 (OS grid reference) · View on Apple Maps WFD catchment Wylye Trib (The Were or Swan) (GB108043022540) 2024 spills / hours – / – Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.5 hours spilling →	River Wyle via the Were (SWS)	14	4.5		100%
East Knighton Pumping Station Storm discharge at pumping station Company site name EAST KNIGHTON EA ID / permit WXW00394 · 401425 Outlet location SY8140085590 (OS grid reference) · View on Apple Maps WFD catchment Frome Dorset Trib (River Win) (GB108044009650) 2024 spills / hours 1 / 4.4 Long-term average 0.6 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.5 hours spilling →	Tributary of River Win	1	4.5	no change	100%
Sea Mills Lane (Portway Bridge) CSO Overflow on sewer network Company site name BRISTOL SEA MILLS LANE NR BRIDGE EA ID / permit WXW00967 · 100840 Outlet location ST5488075830 (OS grid reference) · View on Apple Maps WFD catchment BRISTOL AVON (GB530905415405) 2024 spills / hours 1 / 1.7 Long-term average 1.7 spills a year (monitored since 2020) Investigation Operational investigation ongoing Improvement Operational improvement completed Volume & pollution Estimate from 4.5 hours spilling →	River Avon via SWS (Estuarine)	4	4.5	up 300%	100%
Shroton Pumping Station Storm discharge at pumping station Company site name SHROTON EA ID / permit WXW00994 · 402122 Outlet location ST8611612337 (OS grid reference) · View on Apple Maps WFD catchment Iwerne (GB108043016010) 2024 spills / hours 30 / 486 Long-term average 10.6 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.5 hours spilling →	River Iwerne	1	4.5	down 97%	100%
Rush Hill CSO Overflow on sewer network Company site name BATH RUSH HILL OPP CULVERHAY SCHOOL EA ID / permit WXW00945 · 101925 Outlet location ST7343064930 (OS grid reference) · View on Apple Maps WFD catchment Bristol Avon (By Bk to Netham Weir) (GB109053027371) 2024 spills / hours 31 / 9.3 Long-term average 26.3 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 4.4 hours spilling →	River Avon	20	4.4	down 35%	100%
Avon Street CSO Overflow on sewer network Company site name BRISTOL AVON STREET / OXFORD STREET EA ID / permit WXW00092 · 101095 Outlet location ST5986872604 (OS grid reference) · View on Apple Maps WFD catchment BRISTOL AVON (GB530905415405) 2024 spills / hours 15 / 12 Long-term average 11.4 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.4 hours spilling →	Floating Harbour	6	4.4	down 60%	95%
Fairfield Sewage Pumping Station Storm discharge at pumping station Company site name CHICKERELL LOWER WAY EA ID / permit WXW00415 · EPRCB3990NR Outlet location SY6491080495 (OS grid reference) · View on Apple Maps WFD catchment Wey (GB108044010210) Shellfish water Portland Harbour East; Portland Harbour West 2024 spills / hours 7 / 15 Long-term average 3.8 spills a year (monitored since 2017) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.4 hours spilling →	Trib of the River Wey	4	4.4	down 43%	100%
New Rd PS Formerly Golf Links Rd PS Storm discharge at pumping station Company site name NEW ROAD FERNDOWN EA ID / permit WXW00472 · 401404 Outlet location SZ0838099989 (OS grid reference) · View on Apple Maps WFD catchment Moors (GB108043011050) 2024 spills / hours 3 / 9.3 Long-term average 3.0 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.4 hours spilling →	Tributary of the Moors River	4	4.4	up 33%	100%
Hollyrood Farm CSO Overflow on sewer network Company site name SHAFTESBURY HOLLYROOD FARM EA ID / permit WXW00554 · 401301 Outlet location ST8613622028 (OS grid reference) · View on Apple Maps WFD catchment Stirchell Brook (GB108043016110) 2024 spills / hours 23 / 15 Long-term average 20.8 spills a year (monitored since 2021) Investigation Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 4.4 hours spilling →	Trib of Stirchell Brook	12	4.4	down 48%	95%
Clifton Down Station Overflow on sewer network Company site name BRISTOL CLIFTON DOWN STATION EA ID / permit WXW00303 · 102254 Outlet location ST5612074460 (OS grid reference) · View on Apple Maps WFD catchment BRISTOL AVON (GB530905415405) 2024 spills / hours 20 / 5.6 Long-term average 20.2 spills a year (monitored since 2018) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing Improvement Operational improvement completed Volume & pollution Estimate from 4.4 hours spilling →	River Avon[Black Rocks](E)	16	4.4	down 20%	100%
Merchants Barton CSO Overflow on sewer network Company site name FROME MERCHANTS BARTON EA ID / permit WXW00711 · 100440 Outlet location ST7784448085 (OS grid reference) · View on Apple Maps WFD catchment Frome (Maiden Bradley to Mells) (GB109053022101) 2024 spills / hours 35 / 11 Long-term average 21.5 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.3 hours spilling →	River Frome (via SWS)	17	4.3	down 51%	100%
Stanton Drew Pumping Station Storm discharge at pumping station Company site name LOWER STANTON DREW EA ID / permit WXW01051 · 012370 Outlet location ST5967063430 (OS grid reference) · View on Apple Maps WFD catchment Chew - conf Winford Bk to conf R Avon (Brist) (GB109053021950) 2024 spills / hours 5 / 8.8 Long-term average 4.5 spills a year (monitored since 2024) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.3 hours spilling →	River Chew (S)	4	4.3	down 20%	100%
Old Park Rd Combined Sewer Overflow Overflow on sewer network Company site name BRISTOL OLD PARK ROAD O/S NO 45 EA ID / permit WXW00824 · 102090 Outlet location ST5202277004 (OS grid reference) · View on Apple Maps WFD catchment BRISTOL AVON (GB530905415405) 2024 spills / hours 25 / 4.9 Long-term average 22.7 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 4.3 hours spilling →	River Avon via SWS (Estuarine)	19	4.3	down 24%	100%
The Strand CSO Overflow on sewer network Company site name CALNE STRAND / CHURCH STREET EA ID / permit WXW01128 · 100715 Outlet location ST9970070751 (OS grid reference) · View on Apple Maps WFD catchment Marden - source to conf Cowage Bk (GB109053022050) 2024 spills / hours 24 / 25 Long-term average 17.7 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.3 hours spilling →	River Marden	10	4.3	down 58%	95%
Manor House Combined Sewer Overflow Overflow on sewer network Company site name EASTERTON MANOR HOUSE EA ID / permit WXW00680 · 101816 Outlet location SU0209554817 (OS grid reference) · View on Apple Maps WFD catchment Semington Bk - source to conf Worton Str (GB109053022130) 2024 spills / hours 5 / 11 Long-term average 3.8 spills a year (monitored since 2019) Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 4.3 hours spilling →	Easterton Brook	2	4.3	down 60%	100%
Avonmouth Way Combined Sewer of Overflow on sewer network Company site name BRISTOL AVONMOUTH WAY EA ID / permit WXW00097 · 102068 Outlet location ST5202277004 (OS grid reference) · View on Apple Maps WFD catchment BRISTOL AVON (GB530905415405) 2024 spills / hours 18 / 74 Long-term average 18.0 spills a year (monitored since 2020) Monitor below 90% Telemetry or data archiving failure / issue · Resolved - Dec Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 4.2 hours spilling →	River Avon (E) via SWS	3	4.2	down 83%	77%
Funeral Directors CSO Overflow on sewer network Company site name BATH FERRY LANE O/S FUNERAL DIRECTOR EA ID / permit WXW00456 · 101227 Outlet location ST7541064580 (OS grid reference) · View on Apple Maps WFD catchment Bristol Avon (By Bk to Netham Weir) (GB109053027371) 2024 spills / hours 26 / 13 Long-term average 16.3 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement Operational improvement ongoing Volume & pollution Estimate from 4.2 hours spilling →	River Avon	12	4.2	down 54%	97%
Coombe Pumping Station Storm discharge at pumping station Company site name STUDLAND COOMBE EA ID / permit WXW00321 · 401199 Outlet location SZ0346082780 (OS grid reference) · View on Apple Maps WFD catchment Dorset / Hampshire (GB620705550000) Bathing water Studland Knoll House 2024 spills / hours 3 / 5.4 Long-term average 12.4 spills a year (monitored since 2017) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 4.2 hours spilling →	Studland Bay(C)	5	4.2	up 67%	100%
Victor Street Combined Sewer Overfl Overflow on sewer network Company site name BRISTOL VICTOR STREET EA ID / permit WXW01176 · 101098 Outlet location ST5997771997 (OS grid reference) · View on Apple Maps WFD catchment Not part of a river WB catchment 2024 spills / hours 16 / 18 Long-term average 11.3 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 4.1 hours spilling →	River Avon (Estuarine) via SWS	3	4.1	down 81%	100%
Muller Road Combined Sewer Overflow on sewer network Company site name BRISTOL MULLER ROAD / FROME BRIDGE EA ID / permit WXW00765 · 101746 Outlet location ST6105575260 (OS grid reference) · View on Apple Maps WFD catchment Frome (Brist) - Bradley Bk to conf Floating Hbr (GB109053027840) 2024 spills / hours 23 / 7.7 Long-term average 18.4 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.1 hours spilling →	River Frome	13	4.1	down 43%	100%
Long Street Combined Sewer Overflow Overflow on sewer network Company site name CROSCOMBE FAYRE WAY / LONG EA ID / permit WXW00640 · 102368 Outlet location ST5856944409 (OS grid reference) · View on Apple Maps WFD catchment Sheppey (GB108052021221) 2024 spills / hours 24 / 134 Long-term average 11.7 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.0 hours spilling →	River Sheppey	2	4.0	down 92%	93%
Melcombe Avenue CSO Overflow on sewer network Company site name WEYMOUTH MELCOMBE AVENUE EA ID / permit WXW00706 · 401191 Outlet location SY6859780667 (OS grid reference) · View on Apple Maps WFD catchment Not part of a river WB catchment Bathing water Weymouth Lodmoor 2024 spills / hours 8 / 2.4 Long-term average 11.3 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 4.0 hours spilling →	Trib of Weymouth Bay (via SWS)	13	4.0	up 63%	100%
Yeo Leisure Park Combined Overflow on sewer network Company site name YEOVIL OLD STATION WAY EA ID / permit WXW01303 · EPRTB3590ER Outlet location ST5639515975 (OS grid reference) · View on Apple Maps WFD catchment Dodham Brook (Yeo (Somset)) (GB108052015600) 2024 spills / hours 5 / 3.3 Long-term average 4.3 spills a year (monitored since 2023) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.0 hours spilling →	Dodham Brook via SWS	2	4.0	down 60%	100%
Rear Doncaster Road Overflow on sewer network Company site name WYKE REGIS DONCASTER ROAD EA ID / permit WXW00920 · 401193 Outlet location SY6713077010 (OS grid reference) · View on Apple Maps WFD catchment Portland Harbour (GB680805270000) Bathing water Portland Harbour Castle Cove; Portland Harbour Sandsfoot Castle Shellfish water Portland Harbour East; Portland Harbour West 2024 spills / hours 12 / 5.2 Long-term average 7.3 spills a year (monitored since 2017) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 3.8 hours spilling →	Portland Harbour (C)	11	3.8	down 8%	100%
48 Downend Road CSO Overflow on sewer network Company site name BRISTOL KINGSWOOD DOWNEND ROAD NO 48 EA ID / permit WXW00041 · 100892 Outlet location ST6631974374 (OS grid reference) · View on Apple Maps WFD catchment Siston Bk - source to conf R Avon (Brist) (GB109053027450) 2024 spills / hours 31 / 7.2 Long-term average 30.8 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 3.8 hours spilling →	Warmley Brook via SWS	14	3.8	down 55%	100%
Manor House Road CSO Overflow on sewer network Company site name GLASTONBURY MANOR HOUSE ROAD O/S TELEPHONE EXCHANGE EA ID / permit WXW00682 · 102491 Outlet location ST4944439075 (OS grid reference) · View on Apple Maps WFD catchment Brue - Clyce Hole to conf North Drain (GB108052021190) 2024 spills / hours 22 / 17 Long-term average 17.8 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 3.8 hours spilling →	Trib of Glastonbury Millstream	11	3.8	down 50%	100%

Sewage treatment works

Storm tanks and inlet overflows at each Wessex Water sewage works. The figures are 2025 spills.

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