Storm overflow register · 2025 annual return

South West Water storm overflows, 2025

South West Water reported 1,365 storm overflows in England for 2025. Together they recorded 46,164 spills over 407,006 hours, an average of 33.8 spills per overflow against 20.4 across England. That ranks 10 of 10 companies, where 1 is the fewest spills per overflow. Counting the same overflows in both years, spills were down 18% on 2024.

178 overflows did not spill · 275 spilled more than 60 times · 1,313 had monitors working for 90% of the year or more · 334 sewage treatment works with overflows

Hours spilling by month, 2025

050k100k150k200kJan 2025: 84,216 hours spillingJanFeb 2025: 45,207 hours spillingFebMar 2025: 9,740 hours spillingMarApr 2025: 21,006 hours spillingAprMay 2025: 2,363 hours spillingMayJun 2025: 8,257 hours spillingJunJul 2025: 1,289 hours spillingJulAug 2025: 2,570 hours spillingAugSep 2025: 11,756 hours spillingSepOct 2025: 9,772 hours spillingOctNov 2025: 60,065 hours spillingNovDec 2025: 150,480 hours spillingDec
Hours spilling, all South West Water overflows, from the start/stop records. Spills running across a month end are split between the months.

All South West 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
Winsham Wastewater Treatment Works
Inlet overflow at sewage works
Sewage works
Winsham
Company site name
WINSHAM STW_PSCSOEO_WINSHAM
EA ID / permit
SBB01370 · DRA 1539
Outlet location
ST37520599 (OS grid reference) · View on Apple Maps
WFD catchment
Upper Axe (GB108045014840)
2024 spills / hours
77 / 75
Long-term average
53.7 spills a year (monitored since 2017)
High-spill reason (company)
Performance - SW Infiltration
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 48 hours spilling →
River Axe 94 48 up 22% 99%
Holloway Street CSO
Overflow on sewer network
Company site name
HOLLOWAY ST_CSO_EXETER
EA ID / permit
SBB00580 · 201925
Outlet location
SX92239188 (OS grid reference) · View on Apple Maps
WFD catchment
Exe (Creedy to Estuary) (GB108045009040)
Shellfish water
Exe Estuary
2024 spills / hours
29 / 63
Long-term average
35.7 spills a year (monitored since 2018)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 48 hours spilling →
River Exe via SWS 28 48 down 3% 100%
High Marsh Pseo (Half Moon Village)
Storm discharge at pumping station
Company site name
HIGHER MARSH SPST_PSCSOEO_NEWTON ST CYRE
EA ID / permit
SBB00569 · 202748
Outlet location
SX89679746 (OS grid reference) · View on Apple Maps
WFD catchment
Lower Creedy (GB108045009070)
2024 spills / hours
54 / 46
Long-term average
42.0 spills a year (monitored since 2022)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 46 hours spilling →
River Creedy(S) 44 46 down 19% 100%
Seymour Place CSO
Overflow on sewer network
Company site name
SEYMOUR PLACE_CSO_PLYMOUTH
EA ID / permit
SBB01071 · 301749
Outlet location
SX46225441 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
18 / 9.4
Long-term average
20.8 spills a year (monitored since 2022)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 46 hours spilling →
Stonehouse Creek (E) 32 46 up 78% 100%
Croyde Wastewater Treatment Works
Storm discharge at pumping station
Company site name
CROYDE STW_PSCSOEO_CROYDE
EA ID / permit
SBB00331 · 201127
Outlet location
SS43343956 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Croyde Bay
2024 spills / hours
23 / 134
Long-term average
14.3 spills a year (monitored since 2010)
Investigation
UWWTR investigation completed
Improvement
Env Act (SODRP) improvement ongoing, Bathing Water and/or Shellfish Water improvement ongoing
Volume & pollution
Estimate from 46 hours spilling →
Croyde Bay (Coastal) 9 46 down 61% 100%
Brightley Woods CSO
Overflow on sewer network
Company site name
BRIGHTLEY WOODS_CSO_OKEHAMPTON
EA ID / permit
SBB00161 · 201731
Outlet location
SX59429687 (OS grid reference) · View on Apple Maps
WFD catchment
Middle River Okement (GB108050008110)
2024 spills / hours
38 / 71
Long-term average
25.9 spills a year (monitored since 2018)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 46 hours spilling →
River Okement 32 46 down 16% 98%
Bishopsteignton PS
Storm discharge at pumping station
Company site name
BISHOPSTEIGNTON SPS_PSCSOEO_BISHOPSTEIG
EA ID / permit
SBB00111 · NRA-SW-2866
Outlet location
SX91177303 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Teign Estuary
2024 spills / hours
12 / 81
Long-term average
8.5 spills a year (monitored since 2010)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 44 hours spilling →
Teign Estuary 7 44 down 42% 100%
Horns Close CSO
Overflow on sewer network
Company site name
HORNS PARK_CSO_BISHOPSTEIGNTON
EA ID / permit
SBB00596 · 203090
Outlet location
SX90447360 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Teign Estuary
2024 spills / hours
0 / 0.0
Long-term average
3.3 spills a year (monitored since 2015)
Monitor below 90%
Sensor failure / issue · Resolved - Aug
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 44 hours spilling →
Surface Water Sewer (S) 24 44 up from 0 40%
Barton Drive CSO
Overflow on sewer network
Company site name
59 BARTON DRIVE_CSO_NEWTON ABBOT
EA ID / permit
SBB00076 · 203381
Outlet location
SX84947126 (OS grid reference) · View on Apple Maps
WFD catchment
Lemon (GB108046008450)
Shellfish water
Teign Estuary
2024 spills / hours
49 / 414
Long-term average
40.2 spills a year
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 44 hours spilling →
Tributary of River Lemon(S) 19 44 down 61% 100%
Rose Cottage CSO
Overflow on sewer network
Company site name
ROSE COTTAGE_CSO_TEDBURN ST. MARY
EA ID / permit
SBB01039 · 201705
Outlet location
SX82289412 (OS grid reference) · View on Apple Maps
WFD catchment
Culvery River (GB108045009220)
2024 spills / hours
37 / 44
Long-term average
29.8 spills a year (monitored since 2022)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 44 hours spilling →
Lilly Brook (S) 34 44 down 8% 99%
Gusti Veor Combined Sewer Overflow
Overflow on sewer network
Company site name
GUSTI VEOR_CSO_NEWQUAY
EA ID / permit
SBB00524 · 301321
Outlet location
SW83356153 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Crantock
2024 spills / hours
59 / 43
Long-term average
37.8 spills a year (monitored since 2010)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Operational investigation completed
Improvement
Env Act (SODRP) improvement ongoing, Bathing Water and/or Shellfish Water improvement ongoing
Volume & pollution
Estimate from 43 hours spilling →
Unnamed Ditch,Trenance Lake(S) 60 43 up 2% 99%
Quarry Close CSO
Overflow on sewer network
Company site name
QUARRY CLOSE_CSO_TOTNES
EA ID / permit
SBB00995 · 202965
Outlet location
SX79046054 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Steamer Quay, Dart Estuary
Shellfish water
Dart
2024 spills / hours
11 / 22
Long-term average
14.0 spills a year (monitored since 2018)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 43 hours spilling →
Tributary of Malt Mill Lake 23 43 up 109% 96%
Thanckes Park Pumping Station
Storm discharge at pumping station
Company site name
THANKES PARK SPST_PSCSOEO_TORPOINT
EA ID / permit
SBB01220 · 301643
Outlet location
SX43535555 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
52 / 52
Long-term average
50.1 spills a year (monitored since 2016)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Monitor below 90%
Capital / maintenance works affect EDM operation · Resolved - Nov
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 43 hours spilling →
River Tamar (Estuarine) 32 43 down 38% 76%
Clapton Pumping Station
Storm discharge at pumping station
Company site name
CLAPTON SPS_PSCSOEO_CREWKERNE
EA ID / permit
SBB00270 · 203475
Outlet location
ST41310639 (OS grid reference) · View on Apple Maps
WFD catchment
Upper Axe (GB108045014840)
2024 spills / hours
9 / 41
Long-term average
7.8 spills a year (monitored since 2017)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 43 hours spilling →
Clapton Stream 12 43 up 33% 100%
Lower Sticker Pumping Station
Storm discharge at pumping station
Company site name
LOWER STICKER SPS_PSCSOEO_ST AUSTELL
EA ID / permit
SBB00717 · 301610
Outlet location
SW97824973 (OS grid reference) · View on Apple Maps
WFD catchment
Caerhays Stream (GB108048002250)
2024 spills / hours
16 / 38
Long-term average
8.5 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 43 hours spilling →
Caerhays Stream 13 43 down 19% 100%
Bunkers Bridge CSO
Overflow on sewer network
Company site name
BUNKERS BRIDGE_CSO_CHUDLEIGH KNIGHTON
EA ID / permit
SBB00190 · 201796
Outlet location
SX84597722 (OS grid reference) · View on Apple Maps
WFD catchment
Teign (Lower) (GB108046008540)
Shellfish water
Teign Estuary
2024 spills / hours
40 / 75
Long-term average
29.9 spills a year (monitored since 2018)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 42 hours spilling →
Trib of the River Teign 27 42 down 33% 98%
Instow A Pumping Station
Storm discharge at pumping station
Company site name
INSTOW A SPS_PSCSOEO_INSTOW
EA ID / permit
SBB00613 · 203125
Outlet location
SS47193020 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Taw-Torridge Estuary
2024 spills / hours
10 / 62
Long-term average
8.7 spills a year (monitored since 2011)
Investigation
No investigation activity in reporting period
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 42 hours spilling →
River Torridge Estuary (E) 10 42 no change 100%
Bishops Nympton STW
Inlet overflow at sewage works
Sewage works
Bishops Nympton
Company site name
BISHOPS NYMPTON STW_SO_BISHOPS NYMPTON
EA ID / permit
SBB00109 · NRA-SW-6747
Outlet location
SS75882317 (OS grid reference) · View on Apple Maps
WFD catchment
Crooked Oak (GB108050014120)
2024 spills / hours
47 / 17
Long-term average
65.6 spills a year (monitored since 2021)
High-spill reason (company)
Performance - SW Infiltration
Investigation
Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 42 hours spilling →
(S) Crooked Oak Stream 53 42 up 13% 100%
Old Woollen Mill CSO
Overflow on sewer network
Company site name
OLD WOOLLEN MILL_CSO_BUCKFASTLEIGH
EA ID / permit
SBB00885 · 201803
Outlet location
SX74216715 (OS grid reference) · View on Apple Maps
WFD catchment
Dart (GB108046008350)
2024 spills / hours
11 / 23
Long-term average
10.3 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 42 hours spilling →
River Dart 17 42 up 55% 99%
Dark Street Lane CSO
Overflow on sewer network
Company site name
DARK STREET LANE TANK_CSO_PLYMPTON
EA ID / permit
SBB00347 · 301704
Outlet location
SX54155596 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Plymouth Hoe East; Plymouth Hoe West
2024 spills / hours
30 / 25
Long-term average
24.5 spills a year (monitored since 2016)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 42 hours spilling →
Longbrook Stream 29 42 down 3% 100%
Forde Park/Torquay Road CSO
Overflow on sewer network
Company site name
FORDE PARK/TORQUAY RD_CSO_NEWTON ABBOT
EA ID / permit
SBB00467 · 203098
Outlet location
SX87037069 (OS grid reference) · View on Apple Maps
WFD catchment
Aller Brook (Teign) - Lower (GB108046005350)
Shellfish water
Teign Estuary
2024 spills / hours
42 / 40
Long-term average
44.9 spills a year (monitored since 2015)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
UWWTR investigation ongoing, Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 42 hours spilling →
S/W Sewer to Aller Brook(S) 36 42 down 14% 96%
Ash Grove CSO
Overflow on sewer network
Company site name
ASH GROVE_CSO_EXMOUTH
EA ID / permit
SBB00051 · 200127/CS/01
Outlet location
SY00038307 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Exe Estuary
2024 spills / hours
28 / 58
Long-term average
20.6 spills a year (monitored since 2010)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 41 hours spilling →
A Tributary of the Exe Estuary 30 41 up 7% 100%
Northbrook Park Golf Crse Upper CSO
Overflow on sewer network
Company site name
NORTHBROOK GOLF COURSE UPPER_CSO_EXETER
EA ID / permit
SBB00855 · 201914
Outlet location
SX93839040 (OS grid reference) · View on Apple Maps
WFD catchment
North Brook (East Devon) (GB108045009050)
Shellfish water
Exe Estuary
2024 spills / hours
23 / 53
Long-term average
18.5 spills a year (monitored since 2017)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 41 hours spilling →
Northbrook 24 41 up 4% 100%
CSO at Killigrew Street
Overflow on sewer network
Company site name
KILLIGREW ST_CSO_FALMOUTH
EA ID / permit
SBB00336 · 303015
Outlet location
SW80833302 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Fal Estuary
2024 spills / hours
51 / 57
Long-term average
21.8 spills a year
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Operational investigation completed
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 41 hours spilling →
Penryn River(E) 37 41 down 27% 100%
West Street Pumping Station
Storm discharge at pumping station
Company site name
WEST STREET SPS_PSCSOEO_SOUTH MOLTON
EA ID / permit
SBB01347 · 201619
Outlet location
SS70932567 (OS grid reference) · View on Apple Maps
WFD catchment
Nadrid Water (GB108050013950)
2024 spills / hours
10 / 41
Long-term average
16.3 spills a year (monitored since 2018)
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 41 hours spilling →
Tributary of Nadrid Water 19 41 up 90% 100%
The College Ide CSO
Overflow on sewer network
Company site name
2 THE COLLEGE_CSO_IDE
EA ID / permit
SBB01223 · 203624
Outlet location
SX90019060 (OS grid reference) · View on Apple Maps
WFD catchment
Alphin Brook (GB108045009020)
Shellfish water
Exe Estuary
2024 spills / hours
30 / 43
Long-term average
21.4 spills a year (monitored since 2018)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 41 hours spilling →
Fordland Brook 29 41 down 3% 98%
Shillingford St George WwTW CSO
Inlet overflow at sewage works
Sewage works
Shillingford St George
Company site name
SHILLINGFORD ST GEORGE STW_SO_SHILLINGFD
EA ID / permit
SBB01081 · NRA-SW-1521
Outlet location
SX90738798 (OS grid reference) · View on Apple Maps
WFD catchment
Matford Brook (GB108045009000)
2024 spills / hours
3 / 1.2
Long-term average
5.3 spills a year (monitored since 2022)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 41 hours spilling →
Alphin Brook 13 41 up 333% 100%
Temple Road CSO
Overflow on sewer network
Company site name
TEMPLE RD_CSO_EXETER
EA ID / permit
SBB01216 · 201924
Outlet location
SX92239188 (OS grid reference) · View on Apple Maps
WFD catchment
Exe (Creedy to Estuary) (GB108045009040)
Shellfish water
Exe Estuary
2024 spills / hours
30 / 51
Long-term average
27.7 spills a year (monitored since 2018)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 40 hours spilling →
River Exe via SWS 29 40 down 3% 100%
Turnchapel Barracks Pumping Station
Storm discharge at pumping station
Company site name
TURNCHAPEL BARRACKS SPS_PSCSOEO_PLYMOUTH
EA ID / permit
SBB01290 · 032895/PC/01
Outlet location
SX49455322 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Plymouth Hoe East
2024 spills / hours
37 / 72
Long-term average
31.3 spills a year (monitored since 2016)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 39 hours spilling →
Cattewater (Estuarine) 25 39 down 32% 100%
Sparry Lane CSO
Overflow on sewer network
Company site name
SPARRY LN_CSO_CARHARRICK
EA ID / permit
SBB01113 · 301813
Outlet location
SW73574140 (OS grid reference) · View on Apple Maps
WFD catchment
Hicks Mill Stream (GB108048001150)
2024 spills / hours
50 / 29
Long-term average
44.3 spills a year (monitored since 2022)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 39 hours spilling →
Carnon River (S) 64 39 up 28% 100%
Blackwater STW
Inlet overflow at sewage works
Sewage works
Blackwater
Company site name
BLACKWATER STW_SO_BLACKWATER
EA ID / permit
SBB00120 · NRA-SW-7828
Outlet location
SW74004561 (OS grid reference) · View on Apple Maps
WFD catchment
Upper Carnon River (GB108048001160)
Shellfish water
Fal Estuary
2024 spills / hours
33 / 27
Long-term average
39.6 spills a year (monitored since 2020)
High-spill reason (company)
Performance - SW Infiltration
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 38 hours spilling →
(S) River Carnon 41 38 up 24% 100%
Fortescue Combined Sewer Overflow
Overflow on sewer network
Company site name
FORTESCUE_CSO_SIDMOUTH
EA ID / permit
SBB00474 · 201185
Outlet location
SY13318903 (OS grid reference) · View on Apple Maps
WFD catchment
Sid (GB108045009160)
2024 spills / hours
27 / 71
Long-term average
23.5 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 38 hours spilling →
The River Sid via SWS 26 38 down 4% 97%
Kingsand Sewage Pumping Station
Storm discharge at pumping station
Company site name
MARKET STREET SPS_PSCSO_KINGSAND
EA ID / permit
SBB00642 · 301903
Outlet location
SX43485048 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Kingsand
2024 spills / hours
44 / 25
Long-term average
20.1 spills a year (monitored since 2010)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Operational investigation completed
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 38 hours spilling →
Cawsand Bay (C) 44 38 no change 96%
Cowdry Close CSO
Overflow on sewer network
Company site name
COWDRAY CLOSE_CSO_SALTASH
EA ID / permit
SBB00318 · 302590
Outlet location
SX42325866 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
20 / 12
Long-term average
7.9 spills a year (monitored since 2015)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 37 hours spilling →
River Tamar Estuary (E) 17 37 down 15% 92%
West Anstey STW
Inlet overflow at sewage works
Sewage works
West Anstey
Company site name
YEO MILL STW_SO_WEST ANSTEY
EA ID / permit
SBB01333 · 202999
Outlet location
SS84162639 (OS grid reference) · View on Apple Maps
WFD catchment
Yeo (Molland) (GB108050014140)
2024 spills / hours
3 / 1.1
Long-term average
11.8 spills a year (monitored since 2022)
Monitor below 90%
Power failure / issue · Resolved - Dec
Investigation
UWWTR investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 37 hours spilling →
River Yeo 12 37 up 300% 85%
Victoria Square CSO
Overflow on sewer network
Company site name
VICTORIA SQUARE_CSO_TRURO
EA ID / permit
SBB01310 · 2894/5
Outlet location
SW82504481 (OS grid reference) · View on Apple Maps
WFD catchment
Kenwyn (GB108048002340)
Shellfish water
Fal Estuary
2024 spills / hours
33 / 23
Long-term average
35.6 spills a year (monitored since 2015)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed
Improvement
Env Act (SODRP) improvement ongoing, Bathing Water and/or Shellfish Water improvement ongoing
Volume & pollution
Estimate from 36 hours spilling →
River Kenwyn 41 36 up 24% 98%
Watery Lane CSO
Overflow on sewer network
Company site name
CASTLE HILL GARDENS_CSO_TORRINGTON
EA ID / permit
SBB01321 · 200077/CS/01
Outlet location
SS49921886 (OS grid reference) · View on Apple Maps
WFD catchment
Torridge (Lew to Estuary) (GB108050014660)
Shellfish water
Taw-Torridge Estuary
2024 spills / hours
83 / 41
Long-term average
87.4 spills a year (monitored since 2017)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 36 hours spilling →
Castle Hill Stream 72 36 down 13% 100%
Old Gateway 1 Combined Sewer of
Overflow on sewer network
Company site name
OLD GATEWAY 1_CSO_OKEHAMPTON
EA ID / permit
SBB00873 · 201727
Outlet location
SX58839528 (OS grid reference) · View on Apple Maps
WFD catchment
East Okemont River (GB108050008100)
2024 spills / hours
39 / 33
Long-term average
34.7 spills a year (monitored since 2016)
High-spill reason (company)
Performance - SW Infiltration
Investigation
UWWTR investigation completed, Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 36 hours spilling →
East Okement River 43 36 up 10% 100%
Mill Lane CSO
Overflow on sewer network
Company site name
MILL LN_CSO_UPLYME
EA ID / permit
SBB00777 · 201817
Outlet location
SY33129331 (OS grid reference) · View on Apple Maps
WFD catchment
Lim (GB108044009760)
Bathing water
Lyme Regis Church Cliff Beach
2024 spills / hours
2 / 1.4
Long-term average
4.2 spills a year (monitored since 2010)
Monitor below 90%
Installation set-up/design issue · Resolved - Dec
Investigation
Env Act (SODRP) investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing, Bathing Water and/or Shellfish Water improvement ongoing
Volume & pollution
Estimate from 36 hours spilling →
River Lim (S) 10 36 up 400% 8%
31 Fore Street CSO
Overflow on sewer network
Company site name
31 FORE STREET_CSO_TOTNES
EA ID / permit
SBB00025 · 201955
Outlet location
SX80576024 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Steamer Quay, Dart Estuary
Shellfish water
Dart
2024 spills / hours
46 / 38
Long-term average
41.5 spills a year (monitored since 2019)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Operational investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 36 hours spilling →
Trib of R.Dart(E) via Sw Sewer 46 36 no change 99%
Buckland ROAD_CSO_NEWTON Abbot
Overflow on sewer network
EA ID / permit
SBB01417 · Permit applied for
Outlet location
SX87207113 (OS grid reference) · View on Apple Maps
WFD catchment
Aller Brook (Teign) - Lower (GB108046005350)
2024 spills / hours
39 / 12
Long-term average
34.7 spills a year (monitored since 2023)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 35 hours spilling →
Aller Brook(S) 65 35 up 67% 99%
Bishops Tawton Pumping Station
Storm discharge at pumping station
Company site name
BISHOPS TAWTON SPS_PSCSOEO_BARNSTAPLE
EA ID / permit
SBB00110 · 200204/PC/01
Outlet location
SS56473020 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Taw-Torridge Estuary
2024 spills / hours
32 / 53
Long-term average
24.1 spills a year (monitored since 2016)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 35 hours spilling →
River Venn (Estuarine) 20 35 down 38% 99%
Torrington WwTW
Inlet overflow at sewage works
Sewage works
Torrington
Company site name
TORRINGTON STW_PSCSOEO_TORRINGTON
EA ID / permit
SBB01262 · 203792
Outlet location
SS48191917 (OS grid reference) · View on Apple Maps
WFD catchment
Torridge (Lew to Estuary) (GB108050014660)
Shellfish water
Taw-Torridge Estuary
2024 spills / hours
5 / 10
Long-term average
4.7 spills a year (monitored since 2016)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 35 hours spilling →
River Torridge 11 35 up 120% 100%
Wilton Road CSO
Overflow on sewer network
Company site name
WILTON RD/ VALLETORT RD_CSO_PLYMOUTH
EA ID / permit
SBB01366 · 301750
Outlet location
SX46225441 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
48 / 40
Long-term average
18.4 spills a year (monitored since 2017)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 35 hours spilling →
Stonehouse Creek via SWS (Est) 39 35 down 19% 100%
Brook Cottage Pumping Station
Storm discharge at pumping station
Company site name
NADDERWATER SPS_PSCSOEO_WHITESTONE
EA ID / permit
SBB00171 · 301667
Outlet location
SX89119344 (OS grid reference) · View on Apple Maps
WFD catchment
Alphin Brook (GB108045009020)
Shellfish water
Exe Estuary
2024 spills / hours
13 / 56
Long-term average
44.9 spills a year (monitored since 2016)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 34 hours spilling →
Nadder Brook 15 34 up 15% 100%
Elm Road Combined Sewer Overflow
Overflow on sewer network
Company site name
ELM ROAD_CSO_NEWTON ABBOT
EA ID / permit
SBB00413 · 201682
Outlet location
SX86107147 (OS grid reference) · View on Apple Maps
WFD catchment
Lemon (GB108046008450)
Shellfish water
Teign Estuary
2024 spills / hours
17 / 33
Long-term average
15.0 spills a year (monitored since 2018)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 34 hours spilling →
Trib of River Teign 15 34 down 12% 100%
St Gennys STW
Storm tank at sewage works
Sewage works
St Gennys
Company site name
ST GENNYS STW_SSO_ST GENNYS
EA ID / permit
SBB01132 · SWWA 200
Outlet location
SX15749596 (OS grid reference) · View on Apple Maps
WFD catchment
Crackington Stream (GB108049007190)
Bathing water
Crackington Haven
2024 spills / hours
19 / 38
Long-term average
19.4 spills a year (monitored since 2011)
Investigation
UWWTR investigation ongoing
Improvement
UWWTR improvement completed
Volume & pollution
Estimate from 34 hours spilling →
(S) Trib of Crackington Stream 19 34 no change 100%
Beer Car Park Pumping Station
Storm discharge at pumping station
Company site name
DOLPHIN ROAD CAR PARK SPS_PSCSOEO_BEER
EA ID / permit
SBB00094 · 202698
Outlet location
SY22688783 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Beer
2024 spills / hours
46 / 143
Long-term average
26.5 spills a year (monitored since 2010)
Investigation
No investigation activity in reporting period
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 34 hours spilling →
Lyme Bay/Seaton Bay(C) 27 34 down 41% 100%
Widegates WwTW
Inlet overflow at sewage works
Sewage works
Widegates
Company site name
WIDEGATES STW_SO_LOOE
EA ID / permit
SBB01360 · SWWA 1003
Outlet location
SX28605736 (OS grid reference) · View on Apple Maps
WFD catchment
Seaton (GB108048002320)
2024 spills / hours
31 / 17
Long-term average
29.4 spills a year (monitored since 2020)
High-spill reason (company)
Performance - SW Infiltration
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 34 hours spilling →
Tributary of River Seaton 39 34 up 26% 100%
Turnchapel Slipway Pumping Station
Storm discharge at pumping station
Company site name
TURNCHAPEL SLIPWAY SPS_PSCSOEO_PLYMOUTH
EA ID / permit
SBB01291 · 032896/PC/01
Outlet location
SX49335309 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Plymouth Hoe East
2024 spills / hours
42 / 63
Long-term average
25.1 spills a year (monitored since 2016)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 34 hours spilling →
Cattewater (Estuarine) 30 34 down 29% 100%

Sewage treatment works

Storm tanks and inlet overflows at each South West 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.