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

020k40k60k80kJan 2025: 60,197 hours spillingJanFeb 2025: 30,296 hours spillingFebMar 2025: 7,928 hours spillingMarApr 2025: 1,385 hours spillingAprMay 2025: 762 hours spillingMayJun 2025: 472 hours spillingJunJul 2025: 218 hours spillingJulAug 2025: 452 hours spillingAugSep 2025: 2,922 hours spillingSepOct 2025: 1,454 hours spillingOctNov 2025: 18,116 hours spillingNovDec 2025: 66,686 hours spillingDec
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.

OverflowDischarges toSpills 2025Hours 2025Spills vs 2024Monitor uptime
Burton Hill PS
Storm discharge at pumping station
Company site name
MALMESBURY BURTON HILL
EA ID / permit
WXW00214 · 103660
Outlet location
ST9323086500 (OS grid reference) · View on Apple Maps
WFD catchment
Sherston Avon (GB109053027690)
2024 spills / hours
4 / 14
Long-term average
2.7 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 7.5 hours spilling →
Trib of River Avon(S) 2 7.5 down 50% 100%
Stoke Hill Pumping Station
Storm discharge at pumping station
Company site name
STOKE ST MICHAEL STOKE HILL
EA ID / permit
WXW01068 · 102699
Outlet location
ST6665747152 (OS grid reference) · View on Apple Maps
WFD catchment
Mells source to conf with Somerset Frome (GB109053022020)
2024 spills / hours
11 / 82
Long-term average
7.8 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 7.4 hours spilling →
Trib of Mells Stream 1 7.4 down 91% 99%
Taunton Trull East Brook CSO
Overflow on sewer network
Company site name
TRULL EASTBROOK ROAD
EA ID / permit
WXW01106 · 100522/CS/01
Outlet location
ST2178922073 (OS grid reference) · View on Apple Maps
WFD catchment
Sherford Stream (GB108052015410)
2024 spills / hours
15 / 62
Long-term average
11.9 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed
Improvement
Env Act (SODRP) improvement ongoing, Operational improvement completed
Volume & pollution
Estimate from 7.3 hours spilling →
Sherford Stream 2 7.3 down 87% 100%
Sandford Orcas Pumping Station
Storm discharge at pumping station
Company site name
SANDFORD ORCAS SPS
EA ID / permit
WXW00958 · 102522
Outlet location
ST6218421095 (OS grid reference) · View on Apple Maps
WFD catchment
Corton Denham Stream (GB108052015620)
2024 spills / hours
3 / 17
Long-term average
1.7 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 7.3 hours spilling →
Corton Denham Stream 2 7.3 down 33% 100%
Tuckton High Street CSO
Overflow on sewer network
Company site name
BOURNEMOUTH TUCKTON ROAD O/S 156
EA ID / permit
WXW01158 · 401566
Outlet location
SZ1477092290 (OS grid reference) · View on Apple Maps
WFD catchment
CHRISTCHURCH HARBOUR (GB520804315900)
Bathing water
Christchurch Avon Beach; Christchurch Friar`s Cliff
2024 spills / hours
13 / 8.4
Long-term average
11.8 spills a year (monitored since 2017)
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing
Improvement
Operational improvement completed
Volume & pollution
Estimate from 7.1 hours spilling →
Tidal River Stour(E) 15 7.1 up 15% 100%
Rode Combined Sewer Overflow
Overflow on sewer network
Company site name
RODE BARROW FARM TANK
EA ID / permit
WXW00935 · 100190
Outlet location
ST8026554191 (OS grid reference) · View on Apple Maps
WFD catchment
Somerset Frome conf with Mells to conf B. Avo (GB109053021840)
2024 spills / hours
5 / 30
Long-term average
4.0 spills a year (monitored since 2019)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 7.1 hours spilling →
Trib of the River Frome 3 7.1 down 40% 97%
5 Springfield Avenue CSO
Overflow on sewer network
Company site name
BRISTOL SPRINGFIELD AVENUE O/S NO 5
EA ID / permit
WXW00042 · 102092
Outlet location
ST5263276269 (OS grid reference) · View on Apple Maps
WFD catchment
BRISTOL AVON (GB530905415405)
2024 spills / hours
32 / 7.9
Long-term average
30.2 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 7.0 hours spilling →
River Avon via SWS (Estuarine) 24 7.0 down 25% 98%
North Street CSO
Overflow on sewer network
Company site name
STOKE SUB HAMDON NORTH STREET O/S NO 50
EA ID / permit
WXW00809 · 100711
Outlet location
ST4737717602 (OS grid reference) · View on Apple Maps
WFD catchment
Wellhams Brook (GB108052015350)
2024 spills / hours
23 / 11
Long-term average
26.2 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 7.0 hours spilling →
Trib of the Wellhams Brook 21 7.0 down 9% 100%
Church Street CSO
Overflow on sewer network
Company site name
STOGURSEY CHURCH ST NR 5-7
EA ID / permit
WXW00289 · EPRAP3829XV
Outlet location
ST2044442881 (OS grid reference) · View on Apple Maps
WFD catchment
Stogursey BK (GB108052021340)
2024 spills / hours
13 / 9.3
Long-term average
9.7 spills a year (monitored since 2019)
Investigation
Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 7.0 hours spilling →
Stogursey Brook 8 7.0 down 38% 98%
Croscombe Water Recycing Centre
Storm tank at sewage works
Sewage works
Croscombe Water Recycing Centre
Company site name
CROSCOMBE STORM TANK
EA ID / permit
WXW00345 · 071798
Outlet location
ST5831444455 (OS grid reference) · View on Apple Maps
WFD catchment
Sheppey (GB108052021221)
2024 spills / hours
0 / 0.0
Long-term average
0.7 spills a year (monitored since 2023)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 7.0 hours spilling →
River Sheppey 2 7.0 up from 0 100%
Britannia Road CSO
Overflow on sewer network
Company site name
BRISTOL HANHAM BRITANNIA ROAD TANK
EA ID / permit
WXW00188 · 101761
Outlet location
ST6403073340 (OS grid reference) · View on Apple Maps
WFD catchment
Bristol Avon (By Bk to Netham Weir) (GB109053027371)
2024 spills / hours
33 / 55
Long-term average
15.0 spills a year (monitored since 2021)
Monitor below 90%
Sensor failure / issue · Scheduled
Investigation
No investigation activity in reporting period
Improvement
Operational improvement completed
Volume & pollution
Estimate from 7.0 hours spilling →
Strad Brook (S) 5 7.0 down 85% 77%
Greenbank View CSO
Overflow on sewer network
Company site name
BRISTOL GREENBANK VIEW
EA ID / permit
WXW00486 · 101242
Outlet location
ST6093874927 (OS grid reference) · View on Apple Maps
WFD catchment
Frome (Brist) - Bradley Bk to conf Floating Hbr (GB109053027840)
2024 spills / hours
16 / 21
Long-term average
13.7 spills a year (monitored since 2023)
Investigation
No investigation activity in reporting period
Improvement
Operational improvement completed
Volume & pollution
Estimate from 6.9 hours spilling →
River Frome via SWS 9 6.9 down 44% 98%
Parbrook WRC
Inlet overflow at sewage works
Sewage works
Parbrook
Company site name
PARBROOK INLET
EA ID / permit
WXW00839 · 070086
Outlet location
ST5665936603 (OS grid reference) · View on Apple Maps
WFD catchment
Coxbridge Brook( Brue) (GB108052021130)
2024 spills / hours
5 / 19
Long-term average
2.7 spills a year (monitored since 2019)
Monitor below 90%
Telemetry or data archiving failure / issue · Resolved - Jul
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 6.9 hours spilling →
Trib of Coxbridge Brook 2 6.9 down 60% 86%
Henhayes Field CSO
Overflow on sewer network
Company site name
CREWKERNE HENHAYES
EA ID / permit
WXW00522 · 101657
Outlet location
ST4507009660 (OS grid reference) · View on Apple Maps
WFD catchment
Parrett - headwaters to Broad River (GB108052015260)
2024 spills / hours
11 / 4.5
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 6.9 hours spilling →
Crewkerne Stream(S) 25 6.9 up 127% 100%
Youth Centre CSO
Overflow on sewer network
Company site name
FROME FARRANT ROAD NEAR YOUTH CENTRE
EA ID / permit
WXW01297 · 100438
Outlet location
ST7714448726 (OS grid reference) · View on Apple Maps
WFD catchment
Frome (Maiden Bradley to Mells) (GB109053022101)
2024 spills / hours
40 / 16
Long-term average
36.6 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 6.8 hours spilling →
River Frome 21 6.8 down 48% 97%
Mill Lane No. 2 CSO
Overflow on sewer network
Company site name
TAUNTON MILL LANE CORFE NO 2
EA ID / permit
WXW00734 · 103193
Outlet location
ST2344819649 (OS grid reference) · View on Apple Maps
WFD catchment
Broughton Brook (South and West Somerset) (GB108052015420)
2024 spills / hours
10 / 25
Long-term average
8.7 spills a year (monitored since 2023)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 6.8 hours spilling →
Trib of Broughton Brook 7 6.8 down 30% 100%
Briantspuddle Sewage
Storm discharge at pumping station
Company site name
BRIANTSPUDDLE
EA ID / permit
WXW00171 · 041980
Outlet location
SY8207093220 (OS grid reference) · View on Apple Maps
WFD catchment
Piddle (Lower) (GB108044010080)
2024 spills / hours
3 / 22
Long-term average
6.7 spills a year (monitored since 2019)
Investigation
Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 6.8 hours spilling →
Tributary of River Piddle (S) 1 6.8 down 67% 100%
West Bridge CSO
Overflow on sewer network
Company site name
BRIDPORT WEST BRIDGE
EA ID / permit
WXW01219 · 402082
Outlet location
SY4627093030 (OS grid reference) · View on Apple Maps
WFD catchment
Brit (Upper) (GB108044009600)
2024 spills / hours
13 / 18
Long-term average
11.0 spills a year (monitored since 2018)
Investigation
Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 6.8 hours spilling →
River Brit 11 6.8 down 15% 99%
Erlestoke Water Recycling Centre
Storm tank at sewage works
Sewage works
Erlestoke
Company site name
ERLESTOKE PARK STORM TANK
EA ID / permit
WXW00409 · 103629
Outlet location
ST9692054360 (OS grid reference) · View on Apple Maps
WFD catchment
Bulkington Drove w/c source to conf Semington Bk (GB109053022140)
2024 spills / hours
20 / 109
Long-term average
10.0 spills a year (monitored since 2023)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 6.8 hours spilling →
Erlestoke Stream(S) 2 6.8 down 90% 99%
Weston Street Combined Sewer of
Overflow on sewer network
Company site name
PORTLAND WESTON STREET NEW
EA ID / permit
WXW01241 · 401192
Outlet location
SY6851470883 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a river WB catchment
2024 spills / hours
11 / 14
Long-term average
8.8 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 6.7 hours spilling →
Groundwater via Infilt System 8 6.7 down 27% 100%
Green Farm Combined Sewer Overflow
Overflow on sewer network
Company site name
OLVESTON GREEN FARM OPP LOWER LEAZE
EA ID / permit
WXW00482 · 101836
Outlet location
ST6003886841 (OS grid reference) · View on Apple Maps
WFD catchment
Chestle Pill (GB109054026650)
2024 spills / hours
4 / 11
Long-term average
2.0 spills a year (monitored since 2023)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 6.6 hours spilling →
Trib. of Olveston Mill Rhine 1 6.6 down 75% 100%
Chippenham - Long Close - Sewage Pumping Station - Storm Tank
Storm discharge at pumping station
EA ID / permit
WXW01327 · Unpermitted
Outlet location
ST9278072877 (OS grid reference) · View on Apple Maps
WFD catchment
Avon (Brist) conf R Marden to conf Semington Bk (GB109053027440)
2024 spills / hours
– / –
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 6.5 hours spilling →
River Avon via SWS 2 6.5 100%
New Buildings PS
Storm discharge at pumping station
Company site name
PEASEDOWN ST JOHN NEW BUILDINGS / WHITEBROOK LANE
EA ID / permit
WXW00785 · 103600
Outlet location
ST6944057350 (OS grid reference) · View on Apple Maps
WFD catchment
Cam Bk - source to conf Wellow Bk (GB109053022290)
2024 spills / hours
47 / 59
Long-term average
33.3 spills a year (monitored since 2023)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 6.5 hours spilling →
Unnamed Ditch(S) 27 6.5 down 43% 100%
Brook Road Pumping Station
Storm discharge at pumping station
Company site name
WIMBORNE BROOK ROAD NO 1
EA ID / permit
WXW00201 · 401779
Outlet location
SZ0232699908 (OS grid reference) · View on Apple Maps
WFD catchment
Stour (Lower) (GB108043011040)
2024 spills / hours
4 / 11
Long-term average
2.3 spills a year (monitored since 2019)
Investigation
Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 6.5 hours spilling →
Tributary of the River Stour 2 6.5 down 50% 100%
Churchill Bridge Island CSO
Overflow on sewer network
Company site name
BATH CHURCHILL BRIDGE ISLAND OPP WELLS ROAD
EA ID / permit
WXW00292 · 101228
Outlet location
ST7496764338 (OS grid reference) · View on Apple Maps
WFD catchment
Bristol Avon (By Bk to Netham Weir) (GB109053027371)
2024 spills / hours
38 / 21
Long-term average
30.4 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 6.4 hours spilling →
River Avon via SWS 20 6.4 down 47% 100%
Houndswood Drive PS
Storm discharge at pumping station
Company site name
STREET HOUNDWOOD DROVE
EA ID / permit
WXW00565 · 103572
Outlet location
ST4718036840 (OS grid reference) · View on Apple Maps
WFD catchment
South Drain (GB108052021181)
2024 spills / hours
7 / 37
Long-term average
4.4 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 6.4 hours spilling →
Trib of the Bullmead Ditch 3 6.4 down 57% 100%
Bristol Road CSO
Overflow on sewer network
Company site name
KEYNSHAM ST LADOC / BRISTOL ROAD
EA ID / permit
WXW00185 · 102128
Outlet location
ST6477069000 (OS grid reference) · View on Apple Maps
WFD catchment
Bristol Avon (By Bk to Netham Weir) (GB109053027371)
2024 spills / hours
30 / 14
Long-term average
25.6 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
Operational improvement ongoing
Volume & pollution
Estimate from 6.3 hours spilling →
Charlton Bottom via SWS 24 6.3 down 20% 100%
Boscombe No.1 Pumping Station
Storm discharge at pumping station
Company site name
BOSCOMBE NO 1
EA ID / permit
WXW00153 · 400551
Outlet location
SZ1143090450 SZ1137090560 SZ1118091060 (OS grid reference) · View on Apple Maps
WFD catchment
Dorset / Hampshire (GB620705550000)
Bathing water
Bournemouth Boscombe Pier
2024 spills / hours
14 / 6.2
Long-term average
14.2 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 6.3 hours spilling →
Poole Bay (C) 14 6.3 no change 100%
Harpers Lane CSO
Overflow on sewer network
Company site name
MALMESBURY HARPERS LANE
EA ID / permit
WXW00508 · 012854
Outlet location
ST9294287274 (OS grid reference) · View on Apple Maps
WFD catchment
Sherston Avon (GB109053027690)
2024 spills / hours
16 / 66
Long-term average
6.4 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
Operational improvement ongoing
Volume & pollution
Estimate from 6.3 hours spilling →
River Avon (Sherston Branch) 3 6.3 down 81% 100%
Westmoreland Road CSO
Overflow on sewer network
Company site name
BATH WESTMORELAND ROAD / CHELTENHAM STREET JUNCTION
EA ID / permit
WXW01238 · 102779
Outlet location
ST7443564584 (OS grid reference) · View on Apple Maps
WFD catchment
Bristol Avon (By Bk to Netham Weir) (GB109053027371)
2024 spills / hours
24 / 30
Long-term average
12.0 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing
Improvement
Operational improvement ongoing
Volume & pollution
Estimate from 6.2 hours spilling →
River Avon via SWS 8 6.2 down 67% 98%
85 Rose Green Road CSO
Overflow on sewer network
Company site name
BRISTOL ROSE GREEN ROAD
EA ID / permit
WXW00055 · 102145
Outlet location
ST6177074840 (OS grid reference) · View on Apple Maps
WFD catchment
Frome (Brist) - Bradley Bk to conf Floating Hbr (GB109053027840)
2024 spills / hours
25 / 12
Long-term average
36.3 spills a year (monitored since 2018)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 6.2 hours spilling →
Coombe Brook via SWS 19 6.2 down 24% 100%
Wembdon Common Pumping Station
Storm discharge at pumping station
Company site name
WEMBDON COMMON
EA ID / permit
WXW01214 · 102688
Outlet location
ST2875237845 ST2875037845 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a river WB catchment
2024 spills / hours
5 / 13
Long-term average
6.2 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
Operational improvement completed
Volume & pollution
Estimate from 6.2 hours spilling →
Crowpill Rhyne(S) 2 6.2 down 60% 100%
Unit 4 Yeo Leisure Park Combined
Overflow on sewer network
Company site name
YEOVIL UNIT 4 YEO LEISURE PARK
EA ID / permit
WXW01167 · EPRTB3591EY
Outlet location
ST5639515975 (OS grid reference) · View on Apple Maps
WFD catchment
Dodham Brook (Yeo (Somset)) (GB108052015600)
2024 spills / hours
7 / 6.8
Long-term average
5.3 spills a year (monitored since 2023)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 6.2 hours spilling →
Dodham Brook via SWS 2 6.2 down 71% 100%
The Manse CSO
Overflow on sewer network
Company site name
BRISTOL THE MANSE SUMMERS LANE
EA ID / permit
WXW01123 · 101726
Outlet location
ST6011674254 (OS grid reference) · View on Apple Maps
WFD catchment
Frome (Brist) - Bradley Bk to conf Floating Hbr (GB109053027840)
2024 spills / hours
12 / 27
Long-term average
7.0 spills a year (monitored since 2024)
Investigation
Operational investigation ongoing
Improvement
Operational improvement completed
Volume & pollution
Estimate from 6.0 hours spilling →
River Frome (S) 2 6.0 down 83% 100%
CSO O/S 23/25 New Cheltenham Road
Overflow on sewer network
Company site name
BRISTOL KINGSWOOD NEW CHELTENHAM ROAD O/S 23 / 25
EA ID / permit
WXW00354 · 100894
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 / 11
Long-term average
23.5 spills a year (monitored since 2024)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 6.0 hours spilling →
Warmley Brook(S) 16 6.0 down 48% 92%
Ringstead STW
Storm tank at sewage works
Sewage works
Ringstead
Company site name
RINGSTEAD BAY STORM TANK
EA ID / permit
WXW00928 · 401738
Outlet location
SY7516781575 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a river WB catchment
Bathing water
Ringstead Bay
2024 spills / hours
8 / 40
Long-term average
2.9 spills a year (monitored since 2017)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 6.0 hours spilling →
Unnamed Stream(S) 1 6.0 down 88% 100%
Foxley Road Combined Sewer Overflow
Overflow on sewer network
Company site name
MALMESBURY DARK LANE / 8 FOXLEY LANE
EA ID / permit
WXW00445 · 012852
Outlet location
ST9285287256 (OS grid reference) · View on Apple Maps
WFD catchment
Sherston Avon (GB109053027690)
2024 spills / hours
40 / 18
Long-term average
34.4 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 5.9 hours spilling →
Sherston Avon 21 5.9 down 48% 97%
Pumping Station at 82 Main Street
Storm discharge at pumping station
Company site name
KEEVIL THE STREET
EA ID / permit
WXW00585 · 011447
Outlet location
ST9235358211 (OS grid reference) · View on Apple Maps
WFD catchment
MIlebourne Str - source to conf Semington Bk (GB109053022150)
2024 spills / hours
10 / 72
Long-term average
5.0 spills a year (monitored since 2022)
Investigation
No investigation activity in reporting period
Improvement
Operational improvement completed
Volume & pollution
Estimate from 5.9 hours spilling →
Tributary of Semington Brook 1 5.9 down 90% 100%
Puriton SPS
Storm discharge at pumping station
Company site name
PURITON DOWNEND TERRACE
EA ID / permit
WXW00899 · 102773
Outlet location
ST3116041430 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a river WB catchment
2024 spills / hours
4 / 11
Long-term average
1.4 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 5.9 hours spilling →
Un-Named Ditch (S) 2 5.9 down 50% 100%
Towerview Pumping Station
Storm discharge at pumping station
Company site name
ROWDE TOWER VIEW
EA ID / permit
WXW01148 · 103621
Outlet location
ST9753862920 (OS grid reference) · View on Apple Maps
WFD catchment
Summerham Brook (GB109053022220)
2024 spills / hours
62 / 324
Long-term average
30.8 spills a year (monitored since 2018)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 5.9 hours spilling →
Tributary of Summerham Brook 6 5.9 down 90% 100%
Sandy Lane PS
Storm discharge at pumping station
Company site name
UPTON SANDY LANE
EA ID / permit
WXW00962 · 402036
Outlet location
SY9836092200 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a river WB catchment
2024 spills / hours
26 / 67
Long-term average
28.3 spills a year (monitored since 2018)
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing
Improvement
Operational improvement completed
Volume & pollution
Estimate from 5.8 hours spilling →
Lytchett Bay(E) 6 5.8 down 77% 100%
424 Wells Road CSO
Overflow on sewer network
Company site name
BRISTOL WELLS ROAD O/S NO 424
EA ID / permit
WXW00036 · 013222
Outlet location
ST6090369971 (OS grid reference) · View on Apple Maps
WFD catchment
Brislington Bk - source to conf R Avon (Brist) (GB109053021980)
2024 spills / hours
37 / 19
Long-term average
28.5 spills a year (monitored since 2024)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 5.8 hours spilling →
Brislington Brook 20 5.8 down 46% 95%
175 Wellington Hill West CSO
Overflow on sewer network
Company site name
BRISTOL WELLINGTON HILL WEST NO 175
EA ID / permit
WXW00012 · 100472
Outlet location
ST5815577315 (OS grid reference) · View on Apple Maps
WFD catchment
Trym - source to conf R Avon (Brist) (GB109053027530)
2024 spills / hours
6 / 1.3
Long-term average
8.4 spills a year (monitored since 2021)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 5.7 hours spilling →
River Trym via SWS 11 5.7 up 83% 100%
Eastfield Road CSO
Overflow on sewer network
Company site name
BRISTOL EAST HILL / CHOCK LANE
EA ID / permit
WXW00398 · EPRSB3393AV
Outlet location
ST5740677433 (OS grid reference) · View on Apple Maps
WFD catchment
Trym - source to conf R Avon (Brist) (GB109053027530)
2024 spills / hours
22 / 3.6
Long-term average
23.0 spills a year (monitored since 2024)
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing
Improvement
Operational improvement completed
Volume & pollution
Estimate from 5.6 hours spilling →
River Trym via SWS 24 5.6 up 9% 100%
Devonshire Road CSO
Overflow on sewer network
Company site name
BRISTOL DEVONSHIRE ROAD O/S 75
EA ID / permit
WXW00364 · NPSWQD010514
Outlet location
ST5861075072 (OS grid reference) · View on Apple Maps
WFD catchment
Frome (Brist) - Bradley Bk to conf Floating Hbr (GB109053027840)
2024 spills / hours
30 / 5.4
Long-term average
28.0 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 5.6 hours spilling →
Cranbrook via SWS 23 5.6 down 23% 100%
Court House Combined Sewer Overflow
Overflow on sewer network
Company site name
FROME COURT HOUSE KING STREET
EA ID / permit
WXW00333 · 100443
Outlet location
ST7784448085 (OS grid reference) · View on Apple Maps
WFD catchment
Frome (Maiden Bradley to Mells) (GB109053022101)
2024 spills / hours
35 / 13
Long-term average
28.1 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 5.6 hours spilling →
River Frome 19 5.6 down 46% 100%
Lyncombe Vale CSO
Overflow on sewer network
Company site name
BATH LYNCOMBE VALE O/S 3 NEW VILLAS
EA ID / permit
WXW00665 · 010935
Outlet location
ST7538464296 (OS grid reference) · View on Apple Maps
WFD catchment
Bristol Avon (By Bk to Netham Weir) (GB109053027371)
2024 spills / hours
27 / 12
Long-term average
10.4 spills a year (monitored since 2018)
Investigation
No investigation activity in reporting period
Improvement
Operational improvement completed
Volume & pollution
Estimate from 5.5 hours spilling →
River Avon via SWS 15 5.5 down 44% 91%
Long Close CSO
Overflow on sewer network
Company site name
CHIPPENHAM 16 LONG CLOSE
EA ID / permit
WXW00637 · 100081
Outlet location
ST9277872873 (OS grid reference) · View on Apple Maps
WFD catchment
Avon (Brist) conf R Marden to conf Semington Bk (GB109053027440)
2024 spills / hours
44 / 76
Long-term average
29.5 spills a year (monitored since 2022)
Investigation
Env Act (SODRP) investigation completed
Improvement
UWWTR improvement ongoing
Volume & pollution
Estimate from 5.4 hours spilling →
River Avon via SWS 6 5.4 down 86% 100%
Bifield Road CSO
Overflow on sewer network
Company site name
BRISTOL 74 BIFIELD ROAD SURFACE WATER
EA ID / permit
WXW00132 · 011325
Outlet location
ST6275968223 (OS grid reference) · View on Apple Maps
WFD catchment
Bristol Avon (By Bk to Netham Weir) (GB109053027371)
2024 spills / hours
10 / 22
Long-term average
7.0 spills a year (monitored since 2024)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 5.4 hours spilling →
Trib of River Avon via SWS 4 5.4 down 60% 98%
Actis Pumping Station
Storm discharge at pumping station
Company site name
GLASTONBURY ACTIS
EA ID / permit
WXW00061 · 102497
Outlet location
ST5045037840 (OS grid reference) · View on Apple Maps
WFD catchment
Coxbridge Brook( Brue) (GB108052021130)
2024 spills / hours
15 / 51
Long-term average
8.7 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 5.4 hours spilling →
Tributary of River Brue (S) 2 5.4 down 87% 95%

Sewage treatment works

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

← All water companies · Contains Environment Agency data licensed under the Open Government Licence v3.0. How to read the data.