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
Maceys TERRACE_CSO_OKEHAMPTON Overflow on sewer network EA ID / permit SBB01427 · Permit applied for Outlet location SX58969569 (OS grid reference) · View on Apple Maps WFD catchment Middle River Okement (GB108050008110) 2024 spills / hours 27 / 35 Long-term average 31.0 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 25 hours spilling →	River Okement	35	25	up 30%	100%
Honicknowle Lane CSO Overflow on sewer network Company site name HONICKNOWLE LANE_CSO_PLYMOUTH EA ID / permit SBB00590 · 301712 Outlet location SX47045795 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Plymouth Hoe East 2024 spills / hours 11 / 3.9 Long-term average 55.8 spills a year (monitored since 2017) High-spill reason (company) Performance - SW Infiltration Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 25 hours spilling →	Ham Brook	31	25	up 182%	93%
Follet Road CSO Overflow on sewer network Company site name FOLLET RD_CSO_EXETER EA ID / permit SBB00463 · 201636 Outlet location SX96228814 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Exe Estuary 2024 spills / hours 37 / 27 Long-term average 28.4 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 25 hours spilling →	River Exe (E)	30	25	down 19%	100%
Barn Orchard Cottages PS Storm discharge at pumping station Company site name MARHAMCHURCH SPS_PSCSOEO_BUDE EA ID / permit SBB00070 · 302092 Outlet location SS21820376 (OS grid reference) · View on Apple Maps WFD catchment Upper River Strat (GB108049013730) Bathing water Summerleaze 2024 spills / hours 3 / 22 Long-term average 58.3 spills a year (monitored since 2016) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 24 hours spilling →	River Strat	4	24	up 33%	98%
139 Outland Road CSO Overflow on sewer network Company site name 111 OUTLAND ROAD_CSO_PLYMOUTH EA ID / permit SBB00007 · 301761 Outlet location SX46225441 (OS grid reference) · View on Apple Maps WFD catchment PLYMOUTH TAMAR (GB520804714300) 2024 spills / hours 27 / 12 Long-term average 34.3 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 24 hours spilling →	Stonehouse Creek (E)	28	24	up 4%	94%
Warfleet Creek Pumping Station Storm discharge at pumping station Company site name WARFLEET CREEK SPS_PSCSOEO_DARTMOUTH EA ID / permit SBB01316 · 202402 Outlet location SX88285053 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Warfleet Creek, Dart Estuary Shellfish water Dart 2024 spills / hours 7 / 51 Long-term average 84.8 spills a year (monitored since 2016) Investigation UWWTR investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 24 hours spilling →	River Dart Estuary	6	24	down 14%	99%
Edinburgh Street (PS5) PS Storm discharge at pumping station Company site name EDINBURGH STREET SPS_PSCSOEO_PLYMOUTH EA ID / permit SBB00404 · 301989 Outlet location SX44685420 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 9 / 5.3 Long-term average 40.7 spills a year (monitored since 2016) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 23 hours spilling →	River Tamar (Estuarine)	18	23	up 100%	100%
Memorial Gardens PS Storm discharge at pumping station Company site name SEA HILL SPS_PSCSOEO_BEER EA ID / permit SBB00760 · 202679 Outlet location SY22688783 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Beer 2024 spills / hours 30 / 23 Long-term average 28.9 spills a year (monitored since 2010) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 23 hours spilling →	Lyme Bay and Seaton Bay (C)	31	23	up 3%	100%
Chittlehampton CSO Overflow on sewer network Company site name CHITTLEHAMPTON_CSO_UMBERLEIGH EA ID / permit SBB00249 · 201951 Outlet location SS63612537 (OS grid reference) · View on Apple Maps WFD catchment Hawkridge Brook (GB108050014520) 2024 spills / hours 37 / 18 Long-term average 29.3 spills a year (monitored since 2022) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 23 hours spilling →	Trib of Hawkridge Brook (S)	52	23	up 41%	100%
Flushing Pumping Station Storm discharge at pumping station Company site name FLUSHING SPST_PSCSOEO_FALMOUTH EA ID / permit SBB00459 · 301915 Outlet location SW80933355 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Fal Estuary 2024 spills / hours 53 / 347 Long-term average 84.8 spills a year (monitored since 2011) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 23 hours spilling →	Penryn River (E)	12	23	down 77%	100%
Shutterton Bridge PS Overflow on sewer network Company site name SHUTTERTON BRIDGE SPS_PSCSOEO_DAWLISH 1 EA ID / permit SBB01088 · 202632 Outlet location SX96577854 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Exe Estuary 2024 spills / hours 17 / 19 Long-term average 8.1 spills a year (monitored since 2015) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 23 hours spilling →	Shutterton Brook(S)	23	23	up 35%	100%
Jephson Road CSO Overflow on sewer network Company site name 1A JEPHSON RD_CSO_PLYMOUTH EA ID / permit SBB00620 · 301739 Outlet location SX50155478 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 18 / 16 Long-term average 16.0 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 23 hours spilling →	River Plym via SWS (Estuarine)	24	23	up 33%	99%
Stibb Sewage Treatment Works Inlet overflow at sewage works Sewage works Stibb Company site name STIBB STW_SO_STIBB EA ID / permit SBB01170 · 300394 Outlet location SS22381091 (OS grid reference) · View on Apple Maps WFD catchment Coombe Valley Stream (GB108049013760) 2024 spills / hours 7 / 11 Long-term average 13.8 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 23 hours spilling →	Trib of Coombe Valley Str (S)	14	23	up 100%	100%
Whitford Road Combined Sewer O/F Overflow on sewer network Company site name WHITFORD ROAD_CSO_MUSBURY EA ID / permit SBB01357 · SWWA 115 Outlet location SY26259506 (OS grid reference) · View on Apple Maps WFD catchment Lower Axe (GB108045008870) 2024 spills / hours 12 / 52 Long-term average 5.9 spills a year (monitored since 2018) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 23 hours spilling →	River Axe	5	23	down 58%	100%
Bitton Park Road Jct 2ND Avenue CSO Overflow on sewer network Company site name 155 BITTON PARK ROAD_CSO_TEIGNMOUTH EA ID / permit SBB00115 · 203205 Outlet location SX93287295 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Teign Estuary 2024 spills / hours 32 / 156 Long-term average 18.1 spills a year (monitored since 2015) Monitor below 90% Sensor failure / issue · Resolved - Nov Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 23 hours spilling →	Teign Estuary(E)	8	23	down 75%	85%
23 King Edward Street CSO Overflow on sewer network Company site name 23 KING EDWARD ST_CSO_EXETER EA ID / permit SBB00020 · 201930 Outlet location SX91099380 (OS grid reference) · View on Apple Maps WFD catchment Exe (Creedy to Estuary) (GB108045009040) Shellfish water Exe Estuary 2024 spills / hours 11 / 6.8 Long-term average 6.7 spills a year (monitored since 2018) Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 23 hours spilling →	River Exe via SWS	6	23	down 45%	98%
Boswedden Pumping Station Storm discharge at pumping station Company site name BOSWEDDEN SPS_PSCSOEO_CAPE CORNWALL EA ID / permit SBB00139 · EPRZP3626GN Outlet location SW35413196 (OS grid reference) · View on Apple Maps WFD catchment Lands End to Trevose Head (GB610807680001) 2024 spills / hours 11 / 21 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 23 hours spilling →	Atlantic Ocean	8	23	down 27%	100%
Barbican (Sutton Harbour) Tanks Overflow on sewer network Company site name BARBICAN TANKS_CSOEO_PLYMOUTH EA ID / permit SBB00069 · 300821 Outlet location SX48345367 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Plymouth Hoe East 2024 spills / hours 3 / 5.4 Long-term average 8.2 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 23 hours spilling →	Plymouth Sound (E)	7	23	up 133%	100%
Combrew Lane CSO Overflow on sewer network Company site name COMBREW LANE_CSO_BARNSTAPLE EA ID / permit SBB00296 · 203290 Outlet location SS52663238 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Taw-Torridge Estuary 2024 spills / hours 13 / 39 Long-term average 11.6 spills a year (monitored since 2015) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 23 hours spilling →	Bryn Brook(S)	10	23	down 23%	100%
Trewidland STW Inlet overflow at sewage works Sewage works Trewidland Company site name TREWIDLAND STW_SO_TREWIDLAND EA ID / permit SBB01285 · 302140 Outlet location SX25105982 (OS grid reference) · View on Apple Maps WFD catchment East Looe River (GB108048001440) 2024 spills / hours 18 / 39 Long-term average 21.8 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 23 hours spilling →	East Looe River (S)	32	23	up 78%	100%
Mousehole Pumping Station Storm discharge at pumping station Company site name MOUSEHOLE SPS_PSCSOEO_MOUSEHOLE EA ID / permit SBB00813 · 301588 Outlet location SW47012617 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 43 / 44 Long-term average 33.7 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 22 hours spilling →	Mounts Bay (Coastal)	31	22	down 28%	100%
St Mawes No.1 PS Storm discharge at pumping station Company site name ST MAWES No1 SPS_PSCSOEO_ST MAWES EA ID / permit SBB01150 · 302830 Outlet location SW84673292 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Fal Estuary 2024 spills / hours 51 / 43 Long-term average 38.4 spills a year High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 22 hours spilling →	Carrick Roads(E)	34	22	down 33%	100%
Farringdon Road CSO Overflow on sewer network Company site name 5 FARINGDON ROAD_CSO_PLYMOUTH EA ID / permit SBB00442 · 301732 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 / 15 Long-term average 13.8 spills a year (monitored since 2016) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 22 hours spilling →	River Plym via SWS (Estuarine)	19	22	up 19%	100%
North Street CSO Overflow on sewer network Company site name NORTH ST_CSO_OKEHAMPTON EA ID / permit SBB00848 · 201729 Outlet location SX58839542 (OS grid reference) · View on Apple Maps WFD catchment East Okemont River (GB108050008100) 2024 spills / hours 92 / 218 Long-term average 52.7 spills a year (monitored since 2018) High-spill reason (company) Performance - SW Infiltration Investigation Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 22 hours spilling →	Trib of East Okement River	35	22	down 62%	100%
Chapeldown Pumping Station Storm discharge at pumping station Company site name CHAPELDOWN SPST_PSCSOEO_TORPOINT EA ID / permit SBB00234 · 15/48/16/P/13 Outlet location SX43725458 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 40 / 82 Long-term average 36.6 spills a year (monitored since 2016) Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 22 hours spilling →	Plymouth Sound (Estuarine)	27	22	down 33%	100%
Church Road CSO Overflow on sewer network Company site name CHURCH ROAD SSO_CSO_WHIMPLE EA ID / permit SBB00263 · 203623 Outlet location SY04169713 (OS grid reference) · View on Apple Maps WFD catchment Upper Cranny Brook (GB108045008810) Shellfish water Exe Estuary 2024 spills / hours 8 / 36 Long-term average 6.0 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 22 hours spilling →	Cranny Brook	5	22	down 38%	100%
Looe Buller Quay Overflow on sewer network Company site name BULLER QUAY_CSO_LOOE EA ID / permit SBB00702 · 300973 Outlet location SX25455338 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water East Looe 2024 spills / hours 10 / 46 Long-term average 82.1 spills a year (monitored since 2010) Investigation UWWTR investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 21 hours spilling →	Looe River (Harbour) (E)	12	21	up 20%	100%
Furzegood Pumping Station Storm discharge at pumping station Company site name FURZEGOOD SPS_PSCSOEO_MARLDON EA ID / permit SBB00481 · 201665 Outlet location SX86456299 (OS grid reference) · View on Apple Maps WFD catchment Hems - Lower (GB108046005430) Shellfish water Dart 2024 spills / hours 27 / 22 Long-term average 36.0 spills a year (monitored since 2016) Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	Trib of Gatcombe Brook	26	21	down 4%	100%
Cove Pumping Station Storm discharge at pumping station Company site name COVE BOAT POUND SPS_PSCSOEO_ST AGNES EA ID / permit SBB00315 · 303457 Outlet location SW72175154 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Trevaunance Cove 2024 spills / hours 20 / 39 Long-term average 16.7 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	Trevaunance Stream(S)	23	21	up 15%	100%
Saltash Road SPS Plymouth Storm discharge at pumping station Company site name SALTASH ROAD SPS_PSCSOEO_PLYMOUTH SD EA ID / permit SBB01044 · 301983 Outlet location SX44565590 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 22 / 12 Long-term average 13.8 spills a year (monitored since 2016) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	River Tamar (Estuarine)	23	21	up 5%	100%
Quethiock WwTW Inlet overflow at sewage works Sewage works Quethiock Company site name QUETHIOCK STW_SO_QUETHIOCK EA ID / permit SBB01003 · SWWA 1148 Outlet location SX31296461 (OS grid reference) · View on Apple Maps WFD catchment Tiddy (GB108047003890) 2024 spills / hours 7 / 11 Long-term average 121.3 spills a year (monitored since 2018) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	Tributary of the River Tiddy	34	21	up 386%	100%
Widecombe STW Inlet overflow at sewage works Sewage works Widecombe Company site name WIDECOMBE STW_SO_WIDECOMBE IN THE MOOR EA ID / permit SBB01359 · 203911 Outlet location SX71907648 (OS grid reference) · View on Apple Maps WFD catchment East Webburn River (GB108046008390) 2024 spills / hours 1 / 2.6 Long-term average 7.0 spills a year (monitored since 2022) Monitor below 90% Sensor failure / issue · Resolved - May Investigation Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	East Webburn River(S)	14	21	up 1300%	89%
Yealmpton WwTW Inlet overflow at sewage works Sewage works Yealmpton Company site name YEALMPTON SPST_PSCSOEO_YEALMPTON EA ID / permit SBB01386 · 300436/FN/01 Outlet location SX57725148 (OS grid reference) · View on Apple Maps WFD catchment Lower River Yealm (GB108047004010) Shellfish water Yealm 2024 spills / hours 1 / 1.0 Long-term average 12.3 spills a year Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	River Yealm	4	21	up 300%	100%
Outside 5 Trevarrack Lane CSO Overflow on sewer network Company site name GULVAL TREVARRACK LANE_CSO_PENZANCE EA ID / permit SBB00893 · 301820 Outlet location SW47923151 (OS grid reference) · View on Apple Maps WFD catchment Trevaylor Stream (GB108048002100) Bathing water Long Rock 2024 spills / hours 53 / 26 Long-term average 97.0 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 21 hours spilling →	Local Stream (S)	48	21	down 9%	100%
Parkham STW Inlet overflow at sewage works Sewage works Parkham Company site name PARKHAM STW_SO_PARKHAM EA ID / permit SBB00907 · NRA-SW-6627 Outlet location SS39402146 (OS grid reference) · View on Apple Maps WFD catchment Upper River Yeo (Bideford) (GB108050014470) 2024 spills / hours 13 / 12 Long-term average 14.2 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	(S) River Yeo	17	21	up 31%	100%
Butts Hill Pumping Station Storm discharge at pumping station Company site name BUTTS HILL SPS_PSCSOEO_OTTERY ST MARY EA ID / permit SBB00195 · 201378 Outlet location SY10059599 (OS grid reference) · View on Apple Maps WFD catchment Lower River Otter (GB108045009170) 2024 spills / hours 18 / 27 Long-term average 20.0 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	Groundwater via Infilt System	17	21	down 6%	100%
Torbridge South CSO Overflow on sewer network Company site name TORBRIDGE SOUTH_CSO_YEALMPTON EA ID / permit SBB01254 · 301896 Outlet location SX57925156 (OS grid reference) · View on Apple Maps WFD catchment Lower River Yealm (GB108047004010) Shellfish water Yealm 2024 spills / hours 12 / 4.3 Long-term average 9.6 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	River Yealm	16	20	up 33%	100%
Langaton Lane CSO Overflow on sewer network Company site name LANGATON LN_CSO_EXETER EA ID / permit SBB00662 · 201852 Outlet location SX97319413 (OS grid reference) · View on Apple Maps WFD catchment Upper Clyst (GB108045008860) Shellfish water Exe Estuary 2024 spills / hours 20 / 15 Long-term average 16.9 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	Pin Brook	25	20	up 25%	100%
Cowleymoor Estate CSO Overflow on sewer network Company site name J/O COWLEY MOOR/CHAPLE ST_CSO_TIVERTON EA ID / permit SBB00319 · 201960 Outlet location SS96101299 (OS grid reference) · View on Apple Maps WFD catchment Lowman (GB108045015030) 2024 spills / hours 3 / 1.4 Long-term average 7.2 spills a year (monitored since 2016) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	Trib of River Lowman via SWS	13	20	up 333%	100%
Exeter Road CSO - Exmouth Overflow on sewer network Company site name EXETER RD_CSO_EXMOUTH EA ID / permit SBB00430 · 200128/CS/01 Outlet location SX99978201 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Exe Estuary 2024 spills / hours 25 / 26 Long-term average 38.2 spills a year (monitored since 2010) Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 20 hours spilling →	Withycombe Brook	29	20	up 16%	100%
Hooe Lake Pumping Station Storm discharge at pumping station Company site name HOOE LAKE SPST_PSCSOEO_PLYMSTOCK EA ID / permit SBB00593 · 032894/PC/01 Outlet location SX49815261 (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 2 / 2.2 Long-term average 4.8 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	Hooe Lake, Plym Estuary	6	20	up 200%	100%
Bovey Bridge CSO Overflow on sewer network Company site name BOVEY BRIDGE_CSO_BOVEY TRACEY EA ID / permit SBB00141 · 201805 Outlet location SX81487826 (OS grid reference) · View on Apple Maps WFD catchment Lower Bovey (GB108046008470) Shellfish water Teign Estuary 2024 spills / hours 2 / 17 Long-term average 3.8 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	River Bovey	5	20	up 150%	99%
Blowing House Lane CSO Overflow on sewer network Company site name BLOWING HSE LN_CSO_BODMIN EA ID / permit SBB00121 · 301825 Outlet location SX05576570 (OS grid reference) · View on Apple Maps WFD catchment St Lawrence Stream (GB108049000040) Shellfish water Camel Estuary 2024 spills / hours 55 / 65 Long-term average 55.3 spills a year (monitored since 2019) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 19 hours spilling →	St Lawrence Stream	23	19	down 58%	99%
Langore Pumping Station Storm discharge at pumping station Company site name LANGORE SPS_PSCSOEO_LAUNCESTON EA ID / permit SBB00663 · 301581 Outlet location SX29668658 (OS grid reference) · View on Apple Maps WFD catchment Lower River Ottery (GB108047007981) 2024 spills / hours 16 / 31 Long-term average 21.6 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 19 hours spilling →	Tributary of the River Otter	21	19	up 31%	100%
Queen Mary Gardens Pumping Station Storm discharge at pumping station Company site name QUEEN MARY GARDENS SPS_PSCSOEO_FALMOUTH EA ID / permit SBB00999 · 300227 Outlet location SW80743131 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Swanpool; Gyllyngvase 2024 spills / hours 12 / 4.7 Long-term average 33.9 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 19 hours spilling →	Falmouth Bay (E)	26	19	up 117%	100%
Hemyock Pscso/EO Storm discharge at pumping station Company site name HEMYOCK SPST_PSCSOEO_HEMYOCK EA ID / permit SBB00564 · 201633 Outlet location ST13841393 (OS grid reference) · View on Apple Maps WFD catchment Middle Culm (GB108045014980) 2024 spills / hours 20 / 79 Long-term average 11.5 spills a year (monitored since 2022) Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 19 hours spilling →	River Culm (S)	5	19	down 75%	100%
The Olde Smithy CSO Overflow on sewer network Company site name OLD SMITHY NORTH ROAD_CSO_OKEHAMPTON EA ID / permit SBB00429 · 201725 Outlet location SX58869559 (OS grid reference) · View on Apple Maps WFD catchment Middle River Okement (GB108050008110) 2024 spills / hours 31 / 26 Long-term average 11.0 spills a year (monitored since 2017) High-spill reason (company) Not Applicable - Ongoing investigation Investigation Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 19 hours spilling →	River Okement	34	19	up 10%	100%
Barton Hill/Brunswick CSO Overflow on sewer network Company site name BARTON HILL/BRUNSWICK PL_CSO_DAWLISH EA ID / permit SBB00078 · 200823 Outlet location SX95927667 (OS grid reference) · View on Apple Maps WFD catchment Dawlish Water (GB108045008910) Bathing water Dawlish Town 2024 spills / hours 35 / 17 Long-term average 22.4 spills a year High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation Operational investigation ongoing Improvement Env Act (SODRP) improvement ongoing, Bathing Water and/or Shellfish Water improvement ongoing Volume & pollution Estimate from 19 hours spilling →	Dawlish Water (S)	32	19	down 9%	100%
Shadycombe Lower Tunnel Overflow on sewer network Company site name SHADYCOMBE TANK_CSOEO_SALCOMBE EA ID / permit SBB01072 · 003224/PC/01 Outlet location SX74173934 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Mill Bay 2024 spills / hours 23 / 171 Long-term average 11.4 spills a year Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 19 hours spilling →	Shadycombe Creek	4	19	down 83%	99%
Lanreath Pumping Station Storm discharge at pumping station Company site name LANREATH SPS_PSCSO_LANREATH EA ID / permit SBB00667 · NRA-SW-3210 Outlet location SX18085677 (OS grid reference) · View on Apple Maps WFD catchment Pont Pill (GB108048001340) 2024 spills / hours 56 / 669 Long-term average 71.0 spills a year (monitored since 2018) Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 19 hours spilling →	Tributary of Pont Pill	23	19	down 59%	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.