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

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.

Overflow	Discharges to	Spills 2025	Hours 2025	Spills vs 2024	Monitor uptime
St Martins Crescent CSO Overflow on sewer network Company site name ST MARTINS CRESCENT_CSO_CAMBORNE EA ID / permit SBB01147 · 301812 Outlet location SW63894081 (OS grid reference) · View on Apple Maps WFD catchment Red River (Upper) (GB108049000600) 2024 spills / hours 18 / 87 Long-term average 15.2 spills a year (monitored since 2020) Monitor below 90% Power failure / issue · Resolved - Oct Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 6.9 hours spilling →	Trib of the Red River via SWS	19	6.9	up 6%	82%
Aveton Gifford WwTW Storm tank at sewage works Sewage works Aveton Gifford Company site name AVETON GIFFORD STW_SSO_AVETON GIFFORD EA ID / permit SBB00057 · 201967 Outlet location SX69104729 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Bantham Shellfish water Bigbury and Avon 2024 spills / hours 12 / 151 Long-term average 7.1 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 6.9 hours spilling →	River Avon Estuary(E)	4	6.9	down 67%	95%
Port Gaverne CSO Overflow on sewer network Company site name PORT GAVERNE_CSO_PORT GAVERNE EA ID / permit SBB00958 · 301688 Outlet location SX00318080 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 8 / 8.4 Long-term average 7.0 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 6.9 hours spilling →	Coastal Stream (S)	9	6.9	up 13%	100%
Marine Parade CSO Overflow on sewer network Company site name MARINE PARADE_CSO_BUDLEIGH SALTERTON EA ID / permit SBB00745 · 200114/CS/01 Outlet location SY06648186 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Budleigh Salterton 2024 spills / hours 9 / 22 Long-term average 6.4 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 6.8 hours spilling →	Knowle Stream	5	6.8	down 44%	100%
Parracombe STW Inlet overflow at sewage works Sewage works Parracombe Company site name PARRACOMBE STW_SSO_PARRACOMBE EA ID / permit SBB00910 · NRA-SW-0411 Outlet location SS66484498 (OS grid reference) · View on Apple Maps WFD catchment Heddon (GB108051020500) 2024 spills / hours 9 / 93 Long-term average 65.2 spills a year (monitored since 2021) Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 6.8 hours spilling →	(S) River Heddon	5	6.8	down 44%	100%
Westcombe Lane CSO Overflow on sewer network Company site name WESTCOMBE LN_CSO_BIDEFORD EA ID / permit SBB01349 · 203291 Outlet location SS45282702 (OS grid reference) · View on Apple Maps WFD catchment Kenwith Stream (GB108050014500) Shellfish water Taw-Torridge Estuary 2024 spills / hours 14 / 2.9 Long-term average 4.3 spills a year (monitored since 2016) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 6.8 hours spilling →	Kenwith Stream(S)	23	6.8	up 64%	100%
Weaver Crescent CSO Overflow on sewer network Company site name WEAVER CRESCENT_CSO_TIVERTON EA ID / permit SBB01325 · 201961 Outlet location SS94811341 (OS grid reference) · View on Apple Maps WFD catchment Exe (Barle to Culm) (GB108045015050) 2024 spills / hours 6 / 2.6 Long-term average 34.6 spills a year (monitored since 2017) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 6.7 hours spilling →	River Exe	14	6.7	up 133%	100%
Millmoor Lane CSO Overflow on sewer network Company site name MILLMOOR LN_CSO_NEWTON POPPLEFORD EA ID / permit SBB00787 · 201844 Outlet location SY08968961 (OS grid reference) · View on Apple Maps WFD catchment Lower River Otter (GB108045009170) 2024 spills / hours 12 / 5.0 Long-term average 11.2 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 6.7 hours spilling →	Trib of River Otter via SWS	15	6.7	up 25%	100%
Stratton PS Storm discharge at pumping station Company site name STRATTON SPS_PSCSOEO_BUDE EA ID / permit SBB01189 · 301150 Outlet location SS22900549 (OS grid reference) · View on Apple Maps WFD catchment Upper River Strat (GB108049013730) Bathing water Summerleaze 2024 spills / hours 1 / 0.8 Long-term average 21.5 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 6.7 hours spilling →	River Neet(S)	3	6.7	up 200%	100%
Causeway Close CSO Overflow on sewer network Company site name CAUSEWAY CLOSE_CSO_NORTHAM EA ID / permit SBB00218 · 302146 Outlet location SS44822980 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Taw-Torridge Estuary 2024 spills / hours 16 / 4.2 Long-term average 15.6 spills a year (monitored since 2017) Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing, Bathing Water and/or Shellfish Water improvement ongoing Volume & pollution Estimate from 6.5 hours spilling →	Tributary of the Pill via SWS	10	6.5	down 38%	100%
Brunel Bridge CSO Overflow on sewer network Company site name BRUNEL BRIDGE_CSO_SALTASH EA ID / permit SBB00174 · 302583 Outlet location SX43385875 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 21 / 3.9 Long-term average 15.0 spills a year (monitored since 2015) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 6.2 hours spilling →	River Tamar (E)	29	6.2	up 38%	95%
Fern Pit Pumping Station Storm discharge at pumping station Company site name FERNPIT SPS_PSCSOEO_NEWQUAY EA ID / permit SBB00445 · 301325 Outlet location SW78936119 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Crantock 2024 spills / hours 48 / 67 Long-term average 47.7 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing, Bathing Water and/or Shellfish Water improvement ongoing Volume & pollution Estimate from 6.2 hours spilling →	River Gannel (S)	7	6.2	down 85%	98%
Colyton Chantry CSO Overflow on sewer network Company site name COLYTON_CSO_COLYTON EA ID / permit SBB00293 · NRA-SW-1138 Outlet location SY24589423 (OS grid reference) · View on Apple Maps WFD catchment Lower Coly (GB108045008790) 2024 spills / hours 14 / 15 Long-term average 11.0 spills a year (monitored since 2022) Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 6.1 hours spilling →	River Coly	13	6.1	down 7%	100%
Landrake Pumping Station Storm discharge at pumping station Company site name LANDRAKE SPS_PSCSOEO_LANDRAKE EA ID / permit SBB00660 · 301621 Outlet location SX37836073 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 8 / 6.4 Long-term average 4.4 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 6.1 hours spilling →	Tributary of the River Lyner	3	6.1	down 63%	100%
Appledore Pumping Station Storm discharge at pumping station Company site name APPLEDORE SPS_PSCSOEO_APPLEDORE EA ID / permit SBB00047 · 203123 Outlet location SS46493077 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Taw-Torridge Estuary 2024 spills / hours 1 / 2.1 Long-term average 3.6 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 6.0 hours spilling →	River Torridge Estuary (E)	3	6.0	up 200%	95%
War Memorial CSO Overflow on sewer network Company site name WAR MEMORIAL_CSO_CULMSTOCK EA ID / permit SBB01314 · 201853 Outlet location ST09731369 (OS grid reference) · View on Apple Maps WFD catchment Middle Culm (GB108045014980) 2024 spills / hours 15 / 9.7 Long-term average 11.3 spills a year (monitored since 2022) Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 5.9 hours spilling →	River Culm (S)	10	5.9	down 33%	100%
Sandringham Park CSO Overflow on sewer network Company site name 51 SANDRINGHAM RD_CSO_NEWTON ABBOT EA ID / permit SBB01051 · 203340 Outlet location SX87207114 (OS grid reference) · View on Apple Maps WFD catchment Aller Brook (Teign) - Lower (GB108046005350) Shellfish water Teign Estuary 2024 spills / hours 5 / 3.7 Long-term average 17.0 spills a year (monitored since 2015) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 5.9 hours spilling →	Aller Brook(S)	7	5.9	up 40%	100%
Church Road Jct of Cecil Road CSO Overflow on sewer network Company site name CHURCH RD/CECIL RD_CSO_EXETER EA ID / permit SBB00264 · 201915 Outlet location SX92999067 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Exe Estuary 2024 spills / hours 19 / 134 Long-term average 15.1 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 5.8 hours spilling →	River Exe via SWS	9	5.8	down 53%	100%
Polson Hill Pscso/EO Storm discharge at pumping station Company site name POLSON HILL SPS_PSCSOEO_MORCHARD BISHOP EA ID / permit SBB00955 · 201676 Outlet location SS76980697 (OS grid reference) · View on Apple Maps WFD catchment Knighty Brook (GB108050008290) 2024 spills / hours 5 / 24 Long-term average 2.3 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 5.8 hours spilling →	Stream (S)	2	5.8	down 60%	100%
Boscastle Harbour Pumping Station Storm discharge at pumping station Company site name BOSCASTLE SPS_PSCSOEO_BOSCASTLE EA ID / permit SBB00134 · 303079 Outlet location SX09409162 (OS grid reference) · View on Apple Maps WFD catchment Cornwall North (GB610807680002) 2024 spills / hours 0 / 0.0 Long-term average 2.3 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 5.7 hours spilling →	Atlantic Ocean(C)	5	5.7	up from 0	100%
Polbathic Village PS Storm discharge at pumping station Company site name POLBATHIC VILLAGE SPS_PSCSOEO_SALTASH EA ID / permit SBB00950 · 303504 Outlet location SX34805693 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 16 / 29 Long-term average 9.8 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 5.7 hours spilling →	Polbathic Stream(S)	16	5.7	no change	100%
27 Oaklea Combined Sewer Oveflow Overflow on sewer network Company site name 27 OAKLEA_CSO_HONITON EA ID / permit SBB00021 · 201850 Outlet location ST15770070 (OS grid reference) · View on Apple Maps WFD catchment Middle River Otter (GB108045009180) 2024 spills / hours 11 / 11 Long-term average 10.4 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 5.7 hours spilling →	The Gissage	12	5.7	up 9%	100%
Ethelwynne Brown Close PS Storm discharge at pumping station Company site name ETHELWYN BROWN ROAD SPS_PSCSOEO_BIDEFORD EA ID / permit SBB00421 · 203292 Outlet location SS45342665 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Taw-Torridge Estuary 2024 spills / hours 6 / 3.8 Long-term average 4.4 spills a year Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 5.7 hours spilling →	River Torridge Estuary(E)	3	5.7	down 50%	100%
Beacon Hill Overflow on sewer network Company site name BEACON HILL_CSO_TORQUAY EA ID / permit SBB00086 · 200222 Outlet location SX91836322 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Beacon Cove 2024 spills / hours 9 / 1.1 Long-term average 13.7 spills a year (monitored since 2015) Monitor below 90% Installation set-up/design issue · Resolved - Feb Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 5.7 hours spilling →	New Harbour Torquay	14	5.7	up 56%	89%
Rock Park CSO Storm discharge at pumping station Company site name ROCK PARK SPS_PSCSOEO_BARNSTAPLE EA ID / permit SBB01036 · 203285 Outlet location SS56153252 (OS grid reference) · View on Apple Maps WFD catchment Coney Gut (GB108050019980) Shellfish water Taw-Torridge Estuary 2024 spills / hours 23 / 7.9 Long-term average 38.7 spills a year Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 5.6 hours spilling →	Taw Estuary(E) & Coney Gut(S)	18	5.6	down 22%	100%
Rock Pumping Station Storm discharge at pumping station Company site name ROCK SPS_PSCSOEO_ST MINVER EA ID / permit SBB01037 · 302971 Outlet location SW93077560 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Camel Estuary 2024 spills / hours 2 / 2.6 Long-term average 1.3 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 5.6 hours spilling →	River Camel Estuary	3	5.6	up 50%	100%
Crantock (Beach Road) SPS Storm discharge at pumping station Company site name CRANTOCK BEACH SPS_PSCSOEO_CRANTOCK EA ID / permit SBB00320 · 301324 Outlet location SW78906079 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Crantock 2024 spills / hours 7 / 8.8 Long-term average 4.0 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement Bathing Water and/or Shellfish Water improvement ongoing Volume & pollution Estimate from 5.4 hours spilling →	Crantock Beach (C)	5	5.4	down 29%	100%
Ruzza Pumping Station Storm discharge at pumping station Company site name RUZZA SPS_PSCSOEO_NEWQUAY EA ID / permit SBB01042 · 15/49/26/P/66 Outlet location SW78325915 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 2 / 1.2 Long-term average 9.8 spills a year (monitored since 2016) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 5.3 hours spilling →	Trib of Porth Joke	7	5.3	up 250%	100%
Seymour Avenue/Salisbury Rd CSO Overflow on sewer network Company site name SEYMOUR AVENUE/SALISBURY RD_CSO_PLYMOUTH EA ID / permit SBB01070 · 301734 Outlet location SX50155478 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Plymouth Hoe East 2024 spills / hours 16 / 4.1 Long-term average 20.0 spills a year (monitored since 2017) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 5.2 hours spilling →	River Plym via SWS (Estuarine)	24	5.2	up 50%	100%
St Johns Terrace CSO Overflow on sewer network Company site name ST JOHNS TERRACE_CSO_TOTNES EA ID / permit SBB01138 · 202242 Outlet location SX80056071 (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 18 / 5.6 Long-term average 16.3 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 5.2 hours spilling →	Malt Mill Lake via Sw Sewer	20	5.2	up 11%	99%
Spencer Gardens CSO Overflow on sewer network Company site name CHICHESTER CRESCENT_CSO_SALTASH EA ID / permit SBB01114 · EPRYB3893NY Outlet location SX42495860 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 0 / 0.0 Long-term average 3.0 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 5.2 hours spilling →	Trib of R. Tamar Estuary (SWS)	12	5.2	up from 0	99%
Chichester SCREENS_CSO_NEWTON Abbot Overflow on sewer network EA ID / permit SBB00001 · Permit applied for Outlet location SX87377154 (OS grid reference) · View on Apple Maps WFD catchment TEIGN (GB510804605800) 2024 spills / hours 19 / 19 Long-term average 17.5 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 5.1 hours spilling →	Aller Brook (Teign)	11	5.1	down 42%	100%
Bamaluz Point Storm Water & EO Storm discharge at pumping station Company site name PORTHGWIDDEN SPST_PSCSOEO_ST IVES EA ID / permit SBB00062 · NRA-SW-2266 Outlet location SW52284102 (OS grid reference) · View on Apple Maps WFD catchment Lands End to Trevose Head (GB610807680001) Bathing water Porthgwidden 2024 spills / hours 1 / 0.6 Long-term average 5.3 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 5.0 hours spilling →	St Ives Bay	3	5.0	up 200%	100%
New STREET_CSO_TORRINGTON Overflow on sewer network EA ID / permit SBB01414 · Permit applied for Outlet location SS48791949 (OS grid reference) · View on Apple Maps WFD catchment Upper River Mere (GB108050014260) 2024 spills / hours 13 / 2.3 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 5.0 hours spilling →	Tributary of River Mere	17	5.0	up 31%	100%
19 Heavitree Road CSO Overflow on sewer network Company site name R/O 19 HEAVITREE RD_CSO_EXETER EA ID / permit SBB00012 · 201921 Outlet location SX92239188 (OS grid reference) · View on Apple Maps WFD catchment Exe (Creedy to Estuary) (GB108045009040) Shellfish water Exe Estuary 2024 spills / hours 21 / 11 Long-term average 15.6 spills a year (monitored since 2018) Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 4.9 hours spilling →	River Exe via SWS	8	4.9	down 62%	94%
Bitton Park Rugby Club CSO Overflow on sewer network Company site name R/O 137 BITTON PARK ROAD_CSO_TEIGNMOUTH EA ID / permit SBB00116 · 203346 Outlet location SX93287296 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Teign Estuary 2024 spills / hours 6 / 11 Long-term average 9.2 spills a year (monitored since 2016) Monitor below 90% Comms failure / issue · Resolved - Dec Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 4.9 hours spilling →	Teign Estuary (E)	4	4.9	down 33%	84%
West Hoe Tunnel Shaft 5B.2 Storm discharge at pumping station Company site name WEST HOE TANKS_CSOEO_PLYMOUTH EA ID / permit SBB01344 · 300453/PC/01 Outlet location SX47185357 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Plymouth Firestone Bay 2024 spills / hours 4 / 1.7 Long-term average 9.5 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 4.9 hours spilling →	Plymouth Sound (E)	4	4.9	no change	100%
Ham Lane Storm Tank CSO Overflow on sewer network Company site name OFF HAM LN, HAM WOOD_CSO_PLYMOUTH EA ID / permit SBB00532 · 302612 Outlet location SX46095797 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 5 / 1.2 Long-term average 4.3 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.8 hours spilling →	Ham Brook(S)	7	4.8	up 40%	92%
Queen Street CSO Overflow on sewer network Company site name QUEEN ST/COURTNEY ST_CSO_NEWTON ABBOT EA ID / permit SBB01000 · 203573 Outlet location SX86037138 (OS grid reference) · View on Apple Maps WFD catchment Lemon (GB108046008450) Shellfish water Teign Estuary 2024 spills / hours 0 / 0.0 Long-term average 0.7 spills a year (monitored since 2016) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.8 hours spilling →	River Lemon via SWS(S)	1	4.8	up from 0	100%
Hooe Road CSO Overflow on sewer network Company site name HOOE ROAD_CSO_PLYMOUTH EA ID / permit SBB00594 · 301811 Outlet location SX49815261 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Plymouth Hoe East 2024 spills / hours 19 / 4.5 Long-term average 18.0 spills a year (monitored since 2017) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.7 hours spilling →	Hooe Lake via SWS (Estuarine)	18	4.7	down 5%	100%
Fire Station CSO Overflow on sewer network Company site name COLYTON FIRE STATION_CSO_COLYTON EA ID / permit SBB00451 · 201879 Outlet location SY24789378 (OS grid reference) · View on Apple Maps WFD catchment Umborne Brook (GB108045008880) 2024 spills / hours 19 / 6.8 Long-term average 15.3 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.7 hours spilling →	River Coly (S)	25	4.7	up 32%	100%
Gwindra Road CSO Overflow on sewer network Company site name GWINDRA_CSO_ST STEPHEN EA ID / permit SBB00527 · 301882 Outlet location SW94885313 (OS grid reference) · View on Apple Maps WFD catchment Gwindra Stream (GB108048001350) 2024 spills / hours 9 / 3.6 Long-term average 5.5 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.7 hours spilling →	Lappa Valley (S)	11	4.7	up 22%	100%
West Looe Square CSO Overflow on sewer network Company site name WEST LOOE QUAY_CSO_LOOE EA ID / permit SBB01346 · 300974 Outlet location SX25405323 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water East Looe 2024 spills / hours 29 / 92 Long-term average 75.2 spills a year (monitored since 2010) Investigation UWWTR investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 4.6 hours spilling →	Looe River (Harbour) (E)	4	4.6	down 86%	100%
Cavendish Road CSO Overflow on sewer network Company site name CAVENDISH RD_CSO_PLYMOUTH EA ID / permit SBB00219 · 301764 Outlet location SX50035438 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 13 / 4.0 Long-term average 12.9 spills a year (monitored since 2017) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.6 hours spilling →	River Plym via SWS (Estuarine)	13	4.6	no change	100%
Batts Lane Combined Sewer Overflow Overflow on sewer network Company site name BATTS LANE_CSO_OTTERY ST. MARY EA ID / permit SBB00081 · 201383 Outlet location SY09969545 (OS grid reference) · View on Apple Maps WFD catchment Lower River Otter (GB108045009170) 2024 spills / hours 5 / 1.5 Long-term average 9.7 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.5 hours spilling →	Tributary of River Otter	13	4.5	up 160%	100%
Castle Hospital CSO Overflow on sewer network Company site name CASTLE HOSPITAL_CSO_OKEHAMPTON EA ID / permit SBB00213 · 201730 Outlet location SX58619464 (OS grid reference) · View on Apple Maps WFD catchment West Okement (GB108050008080) 2024 spills / hours 1 / 6.7 Long-term average 0.8 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.5 hours spilling →	West Okement (S)	2	4.5	up 100%	97%
The Green Tank CSO Overflow on sewer network Company site name THE GREEN TANK_CSO_BUDLEIGH SALTERTON EA ID / permit SBB01225 · 200113/CS/01 Outlet location SY06178199 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Budleigh Salterton 2024 spills / hours 10 / 22 Long-term average 5.5 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.5 hours spilling →	Knowle Stream	4	4.5	down 60%	93%
Keyberry Road No.18 CSO Overflow on sewer network Company site name KEYBERRY RD ADJ NO 18_CSO_NEWTON ABBOT EA ID / permit SBB00629 · 203200 Outlet location SX87037065 (OS grid reference) · View on Apple Maps WFD catchment Aller Brook (Teign) - Lower (GB108046005350) Shellfish water Teign Estuary 2024 spills / hours 3 / 9.4 Long-term average 50.9 spills a year (monitored since 2015) Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 4.4 hours spilling →	Aller Brook(S)	6	4.4	up 100%	91%
Mowhay Road No.2 CSO Overflow on sewer network Company site name MOWHAY ROAD_CSO_PLYMOUTH EA ID / permit SBB00814 · 302616 Outlet location SX46095846 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 2 / 0.4 Long-term average 1.7 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.4 hours spilling →	Honicknowle Stream	4	4.4	up 100%	100%
Buddle Lane CSO Overflow on sewer network Company site name BUDDLE LN_CSO_EXETER EA ID / permit SBB00186 · 201931 Outlet location SX93009067 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Exe Estuary 2024 spills / hours 7 / 2.4 Long-term average 14.3 spills a year (monitored since 2017) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 4.4 hours spilling →	River Exe via SWS	20	4.4	up 186%	93%

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.