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
Sheviock STW SO Inlet overflow at sewage works Sewage works Sheviock Company site name SHEVIOCK S T SEPTNK_SO_SHEVIOCK EA ID / permit SBB01078 · NRA-SW-1518 Outlet location SX37445492 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 11 / 16 Long-term average 5.0 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.6 hours spilling →	River Lynher	1	0.6	down 91%	99%
Kiln Quay Pumping Station Storm discharge at pumping station Company site name KILN QUAY SPS_PSCSOEO_NEWTON FERRERS EA ID / permit SBB00632 · 301629 Outlet location SX54454785 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Yealm 2024 spills / hours 0 / 0.0 Long-term average 1.0 spills a year (monitored since 2017) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.6 hours spilling →	Newton Creek (Estuarine)	2	0.6	up from 0	100%
R/O 615 Wolseley Road Overflow on sewer network Company site name R/O 615 WOLSELEY ROAD_CSO_PLYMOUTH EA ID / permit SBB01006 · 302617 Outlet location SX44595801 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 0 / 0.0 Long-term average 1.0 spills a year (monitored since 2011) Monitor below 90% Sensor failure / issue · Resolved - Jul Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.6 hours spilling →	Kinterbury Creek via W/Crse(S)	3	0.6	up from 0	89%
South Street CSO Overflow on sewer network Company site name SOUTH ST_CSO_SOUTH MOLTON EA ID / permit SBB01105 · 201941 Outlet location SS70832568 (OS grid reference) · View on Apple Maps WFD catchment Nadrid Water (GB108050013950) 2024 spills / hours 7 / 1.3 Long-term average 5.3 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Tributary of Nadrid Water (S)	6	0.5	down 14%	100%
Elm Grove CSO Overflow on sewer network Company site name ELM GROVE ROAD_CSO_DAWLISH EA ID / permit SBB00412 · 200825 Outlet location SX96797705 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Dawlish Town 2024 spills / hours 5 / 1.0 Long-term average 3.1 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 0.5 hours spilling →	Lyme Bay (C)	4	0.5	down 20%	100%
Playing Field CSO Overflow on sewer network Company site name PLAYING FIELD_CSO_ERMINGTON EA ID / permit SBB00942 · 201875 Outlet location SX64065308 (OS grid reference) · View on Apple Maps WFD catchment Erme (GB108046005200) Bathing water Mothecombe; Coastguards Beach, Erme Estuary 2024 spills / hours 0 / 0.0 Long-term average 0.3 spills a year (monitored since 2015) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	River Erme	2	0.5	up from 0	100%
Cheriton Bishop STW Inlet overflow at sewage works Sewage works Cheriton Bishop Company site name CHERITON BISHOP STW_SO_CHERITON BISHOP EA ID / permit SBB00240 · NRA-SW-3560 Outlet location SX77579355 (OS grid reference) · View on Apple Maps WFD catchment Ford Brook (EXE) (GB108045009230) 2024 spills / hours 5 / 3.3 Long-term average 2.4 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Ford Brook(S)	1	0.5	down 80%	100%
Morice Yard CSO Overflow on sewer network Company site name MORICE YARD_CSO_PLYMOUTH EA ID / permit SBB00808 · 301991 Outlet location SX44785497 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 0 / 0.0 Long-term average 0.6 spills a year (monitored since 2017) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Hamoaze (Estuarine)	1	0.5	up from 0	100%
Cooks Cross Combined Sewer Overflow Overflow on sewer network Company site name COOKS CROSS_CSO_SOUTH MOLTON EA ID / permit SBB00304 · 201946 Outlet location SS70832569 (OS grid reference) · View on Apple Maps WFD catchment Nadrid Water (GB108050013950) 2024 spills / hours 11 / 2.2 Long-term average 11.7 spills a year (monitored since 2018) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Trib of Nardridwater via SWS	6	0.5	down 45%	100%
North Lawn Court CSO Overflow on sewer network Company site name NORTH LAWN CT_CSO_EXETER EA ID / permit SBB00841 · 201911 Outlet location SX94799230 (OS grid reference) · View on Apple Maps WFD catchment North Brook (East Devon) (GB108045009050) Shellfish water Exe Estuary 2024 spills / hours 2 / 0.2 Long-term average 5.7 spills a year (monitored since 2018) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	North Brook via SWS	5	0.5	up 150%	97%
Temple Street CSO Overflow on sewer network Company site name TEMPLE ST_CSO_SIDMOUTH EA ID / permit SBB01217 · 201828 Outlet location SY12978858 (OS grid reference) · View on Apple Maps WFD catchment Sid (GB108045009160) 2024 spills / hours 4 / 0.6 Long-term average 4.3 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	River Sid	4	0.5	no change	100%
Vicarge Gardens CSO Milton Abbot Overflow on sewer network Company site name MILTON ABBOT_CSO_MILTON ABBOT EA ID / permit SBB01305 · 301860 Outlet location SX40557914 (OS grid reference) · View on Apple Maps WFD catchment Lower River Tamar (GB108047007860) 2024 spills / hours 0 / 0.0 Long-term average 1.3 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	River Tamar (S)	4	0.5	up from 0	100%
Heavitree Pleasure Ground CSO Overflow on sewer network Company site name HEAVITREE PLEASURE GROUND_CSO_EXETER EA ID / permit SBB00558 · 201908 Outlet location SX94799229 (OS grid reference) · View on Apple Maps WFD catchment North Brook (East Devon) (GB108045009050) Shellfish water Exe Estuary 2024 spills / hours 3 / 0.2 Long-term average 2.9 spills a year (monitored since 2017) Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 0.5 hours spilling →	North Brook via SWS	4	0.5	up 33%	100%
Gold Street CSO Overflow on sewer network Company site name GOLD STREET_CSO_TIVERTON EA ID / permit SBB00496 · 201819 Outlet location SS95761256 (OS grid reference) · View on Apple Maps WFD catchment Lowman (GB108045015030) 2024 spills / hours 4 / 1.4 Long-term average 4.6 spills a year (monitored since 2017) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	River Lowman	3	0.5	down 25%	100%
Church Road CSO Overflow on sewer network Company site name J/O CHURCH RD/WESTWOOD_CSO_COCKWOOD EA ID / permit SBB00262 · 202628 Outlet location SX97188063 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Exe Estuary 2024 spills / hours 0 / 0.0 Long-term average 4.3 spills a year (monitored since 2015) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 0.5 hours spilling →	Cofton Stream(S)	5	0.5	up from 0	100%
Firlands Road 1 CSO Overflow on sewer network Company site name FIRLANDS RD 1_CSO_TORQUAY EA ID / permit SBB00453 · 201937 Outlet location SX91536654 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 0 / 0.0 Long-term average 2.1 spills a year (monitored since 2017) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	Tributary of River Fleet	3	0.4	up from 0	100%
Coach Road CSO Overflow on sewer network Company site name COACH RD GREEN_CSO_SILVERTON EA ID / permit SBB00280 · 201827 Outlet location SS95860291 (OS grid reference) · View on Apple Maps WFD catchment Lower Culm (GB108045014970) 2024 spills / hours 2 / 0.6 Long-term average 4.0 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	Stream (S)	4	0.4	up 100%	100%
Ivy Cottage Pumping Station Overflow on sewer network Company site name NEWTON ROAD_CSO_TORQUAY EA ID / permit SBB00616 · 201623 Outlet location SX88966629 (OS grid reference) · View on Apple Maps WFD catchment Aller Brook (Teign) - Upper (GB108046005330) 2024 spills / hours 0 / 0.0 Long-term average 0.8 spills a year (monitored since 2016) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	Trib of Aller Brook	2	0.4	up from 0	100%
Old Totnes Road CSO Overflow on sewer network Company site name OLD TOTNES RD_CSO_NEWTON ABBOT EA ID / permit SBB00883 · 201737 Outlet location SX85347051 (OS grid reference) · View on Apple Maps WFD catchment Lemon (GB108046008450) Shellfish water Teign Estuary 2024 spills / hours 14 / 75 Long-term average 7.7 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	Trib of River Lemon	4	0.4	down 71%	100%
Falmouth STW Inlet & Storm PS Storm discharge at pumping station Company site name FALMOUTH STW_PSCSOEO_FALMOUTH EA ID / permit SBB00439 · 302999 Outlet location SW82643206 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Fal Estuary 2024 spills / hours 0 / 0.0 Long-term average 0.5 spills a year (monitored since 2023) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	Penryn River(E)	1	0.4	up from 0	100%
Searle Street CSO Overflow on sewer network Company site name SEARLE ST_CSO_CREDITON EA ID / permit SBB01065 · 201878 Outlet location SS84480041 (OS grid reference) · View on Apple Maps WFD catchment Lower Yeo (Creedy) (GB108045009280) 2024 spills / hours 11 / 2.3 Long-term average 4.8 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	Stream (S)	5	0.4	down 55%	100%
Tabernacle Street CSO Overflow on sewer network Company site name TABERNACLE ST_CSO_TRURO EA ID / permit SBB01200 · 301696 Outlet location SW82694471 (OS grid reference) · View on Apple Maps WFD catchment Kenwyn (GB108048002340) Shellfish water Fal Estuary 2024 spills / hours 0 / 0.0 Long-term average 0.9 spills a year (monitored since 2017) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	River Kenwyn via SWS	2	0.4	up from 0	100%
Market Walk CSO Overflow on sewer network Company site name MARKET WALK_CSO_NEWTON ABBOT EA ID / permit SBB00749 · 203339 Outlet location SX86037139 (OS grid reference) · View on Apple Maps WFD catchment Lemon (GB108046008450) Shellfish water Teign Estuary 2024 spills / hours 2 / 0.7 Long-term average 3.4 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	River Lemon(S)	3	0.3	up 50%	100%
Sea Lawns Outfall CSO, Dawlish Overflow on sewer network Company site name TIMARU STW_FEEO_DAWLISH EA ID / permit SBB01062 · 200828 Outlet location SX96797705 (OS grid reference) · View on Apple Maps WFD catchment Lyme Bay West (GB650806420000) Bathing water Dawlish Town 2024 spills / hours 0 / 0.0 Long-term average 15.0 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement Bathing Water and/or Shellfish Water improvement ongoing Volume & pollution Estimate from 0.3 hours spilling →	Lyme Bay(C)	1	0.3	up from 0	100%
Church Lane Combined Sewer Overflow Overflow on sewer network Company site name CHURCH LN_CSO_CREDITON EA ID / permit SBB00259 · 201870 Outlet location SS84480041 (OS grid reference) · View on Apple Maps WFD catchment Middle Creedy (GB108045009090) 2024 spills / hours 3 / 1.1 Long-term average 4.6 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	Trib of River Creedy via SWS	5	0.3	up 67%	99%
Barrington Street CSO Overflow on sewer network Company site name J/O GOLD/BARRINGTON ST_CSO_TIVERTON EA ID / permit SBB00073 · 201820/CS/01 Outlet location SS95771258 (OS grid reference) · View on Apple Maps WFD catchment Lowman (GB108045015030) 2024 spills / hours 5 / 1.0 Long-term average 4.4 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	River Lowman	3	0.3	down 40%	100%
Burnthouse Lane CSO Overflow on sewer network Company site name 127 BURNTHOUSE LANE_CSO_EXETER EA ID / permit SBB00192 · 202223 Outlet location SX94299124 (OS grid reference) · View on Apple Maps WFD catchment North Brook (East Devon) (GB108045009050) Shellfish water Exe Estuary 2024 spills / hours 0 / 0.0 Long-term average 1.5 spills a year (monitored since 2017) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	Northbrook via SWS	2	0.3	up from 0	100%
Shutterton Bridge PS Overflow on sewer network Company site name SHUTTERTON BRIDGE SPS_PSCSOEO_DAWLISH 2 EA ID / permit SBB01394 · 202632 Outlet location SX96587854 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Exe Estuary 2024 spills / hours 16 / 9.0 Long-term average 10.3 spills a year (monitored since 2021) Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	Shutterton Brook(S)	2	0.3	down 88%	100%
Lemon Mews CSO Overflow on sewer network Company site name LEMON MEWS_CSO_TRURO EA ID / permit SBB00680 · 302682 Outlet location SW82564474 (OS grid reference) · View on Apple Maps WFD catchment Kenwyn (GB108048002340) Shellfish water Fal Estuary 2024 spills / hours 2 / 0.2 Long-term average 0.4 spills a year Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	River Kenwyn(S)	2	0.3	no change	100%
Bridge House CSO Overflow on sewer network Company site name BRIDGE HSE_CSO_TIVERTON EA ID / permit SBB00153 · 201823 Outlet location SS95321254 (OS grid reference) · View on Apple Maps WFD catchment Exe (Barle to Culm) (GB108045015050) 2024 spills / hours 32 / 13 Long-term average 17.4 spills a year (monitored since 2017) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	River Exe	3	0.3	down 91%	99%
Vicarage Road CSO Overflow on sewer network Company site name VICARAGE RD_CSO_SIDMOUTH EA ID / permit SBB01304 · 201832 Outlet location SY12778806 (OS grid reference) · View on Apple Maps WFD catchment Sid (GB108045009160) 2024 spills / hours 2 / 0.2 Long-term average 2.8 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	River Sid via SWS	3	0.3	up 50%	100%
Parkland Drive Pumping Station Storm discharge at pumping station Company site name PARKLAND DRIVE SPS_PSCSOEO_EXETER EA ID / permit SBB00909 · 201632 Outlet location SX94309124 (OS grid reference) · View on Apple Maps WFD catchment North Brook (East Devon) (GB108045009050) Shellfish water Exe Estuary 2024 spills / hours 2 / 5.3 Long-term average 1.6 spills a year (monitored since 2016) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	Northbrook via SWS	1	0.3	down 50%	100%
Moorland Road CSO Overflow on sewer network Company site name MOORLAND RD_CSO_PLYMOUTH EA ID / permit SBB00801 · 301703 Outlet location SX54095668 (OS grid reference) · View on Apple Maps WFD catchment Tory Brook (GB108047003640) 2024 spills / hours 0 / 0.0 Long-term average 0.1 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	Tory Brook (via SWS)	1	0.3	up from 0	100%
5A High Street CSO Overflow on sewer network Company site name 5A HIGH STREET_CSO_HATHERLEIGH EA ID / permit SBB00033 · 201776 Outlet location SS54050422 (OS grid reference) · View on Apple Maps WFD catchment Lower River Lew (Torridge) (GB108050008220) 2024 spills / hours 6 / 1.6 Long-term average 5.7 spills a year (monitored since 2016) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	River Lew via SWS	3	0.3	down 50%	100%
Pumping Station at Warren Point Storm discharge at pumping station Company site name WARREN POINT SPS_PSCSOEO_BIGBURY EA ID / permit SBB00993 · 202604 Outlet location SX64904457 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Challaborough 2024 spills / hours 10 / 32 Long-term average 1.9 spills a year (monitored since 2011) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	Bigbury Bay (Coastal)	2	0.3	down 80%	100%
21 Lower Town CSO Overflow on sewer network Company site name 21 LOWER TOWN_CSO_SAMPFORD PEVERELL EA ID / permit SBB00018 · 201838 Outlet location ST03281423 (OS grid reference) · View on Apple Maps WFD catchment Spratford Stream (GB108045015020) 2024 spills / hours 2 / 0.3 Long-term average 7.4 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	Tributary of Spratford Stream	1	0.3	down 50%	92%
21 Wonford Street CSO Overflow on sewer network Company site name 21 WONFORD ST_CSO_EXETER EA ID / permit SBB00019 · 201909 Outlet location SX94299124 (OS grid reference) · View on Apple Maps WFD catchment North Brook (East Devon) (GB108045009050) Shellfish water Exe Estuary 2024 spills / hours 0 / 0.0 Long-term average 1.1 spills a year (monitored since 2018) Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 0.3 hours spilling →	Northbrook via SWS	2	0.3	up from 0	100%
Station Road Pumping Station Storm discharge at pumping station Company site name STATION ROAD SPS_PSCSOEO_PERRANPORTH EA ID / permit SBB01165 · 300038/PC/01 Outlet location SW76095419 (OS grid reference) · View on Apple Maps WFD catchment Bolingey Stream (GB108049000700) Bathing water Perranporth 2024 spills / hours 1 / 0.6 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 0.3 hours spilling →	Bolingey Stream	1	0.3	no change	100%
No 15 Lemon Road CSO Overflow on sewer network Company site name LEMON RD_CSO_NEWTON ABBOT EA ID / permit SBB00837 · 203138 Outlet location SX86367144 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Teign Estuary 2024 spills / hours 3 / 2.2 Long-term average 117.7 spills a year (monitored since 2015) Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	River Lemon (S)	3	0.3	no change	100%
Moon Cove CSO Overflow on sewer network Company site name MOON COVE NORTH YARD_CSO_PLYMOUTH EA ID / permit SBB00799 · 301992 Outlet location SX44745536 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 0 / 0.0 Long-term average 0.9 spills a year (monitored since 2017) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.2 hours spilling →	Hamoaze (Estuarine)	1	0.2	up from 0	100%
Cattle Market CSO Overflow on sewer network Company site name CATTLE MARKET_CSO_SOUTH MOLTON EA ID / permit SBB00217 · 201947 Outlet location SS71752578 (OS grid reference) · View on Apple Maps WFD catchment Mole (Yeo to Burcombe Stream) (GB108050014130) 2024 spills / hours 2 / 0.2 Long-term average 1.5 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.2 hours spilling →	Trib of R. Mole (S)	4	0.2	up 100%	100%
Middle Mill Lane CSO Overflow on sewer network Company site name MIDDLE MILL LN_CSO_CULLOMPTON EA ID / permit SBB00771 · 201859 Outlet location ST02280735 (OS grid reference) · View on Apple Maps WFD catchment Lower Culm (GB108045014970) 2024 spills / hours 2 / 0.4 Long-term average 1.3 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.2 hours spilling →	Mill Leat	2	0.2	no change	98%
Ham Woods Ham Lane CSO Overflow on sewer network Company site name HAM WOODS HAM LANE_CSO_PLYMOUTH EA ID / permit SBB00533 · 301727 Outlet location SX46445784 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 0 / 0.0 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 0.2 hours spilling →	Ham Brook	1	0.2	up from 0	96%
Park Hill CSO Overflow on sewer network Company site name PARK HILL/ALEXANDRA TERR_CSO_TEIGNMOUTH EA ID / permit SBB00906 · 203089 Outlet location SX93557296 (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 2.3 spills a year Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.2 hours spilling →	Surface Water Sewer (S)	2	0.2	up from 0	100%
Lowicke House PS Storm discharge at pumping station Company site name LOWICKE HSE SPS_PSCSOEO_NEWTON ABBOT EA ID / permit SBB00719 · 203102 Outlet location SX84927228 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Teign Estuary 2024 spills / hours 1 / 2.1 Long-term average 1.3 spills a year Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.2 hours spilling →	The Aller Brook (S)	2	0.2	up 100%	100%
Mill Street Combined Sewer Overflow Overflow on sewer network Company site name MILL ST_CSO_CREDITON EA ID / permit SBB00781 · 201865 Outlet location SS84190030 (OS grid reference) · View on Apple Maps WFD catchment Middle Creedy (GB108045009090) 2024 spills / hours 3 / 1.5 Long-term average 4.3 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.2 hours spilling →	Trib of River Creedy via SWS	3	0.2	no change	100%
Chapel HILL_CSO_CAMBORNE Overflow on sewer network EA ID / permit SBB01421 · Permit applied for Outlet location SW66224071 (OS grid reference) · View on Apple Maps WFD catchment Red River (Upper) (GB108049000600) 2024 spills / hours 1 / 0.1 Long-term average 1.0 spills a year (monitored since 2023) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.2 hours spilling →	Red River	2	0.2	up 100%	100%
Columb Major CSO Overflow on sewer network Company site name ST. COLUMB MAJOR_CSO_ST COLUMB EA ID / permit SBB00289 · 301680 Outlet location SW91686400 (OS grid reference) · View on Apple Maps WFD catchment Menalhyl (GB108049000070) 2024 spills / hours 3 / 0.6 Long-term average 2.4 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.2 hours spilling →	River Menathyl	1	0.2	down 67%	100%
Grange Road CSO Overflow on sewer network Company site name GRANGE RD S.A. TANK_CSO_HELSTON EA ID / permit SBB00513 · 033997/CS/01 Outlet location SW65532731 (OS grid reference) · View on Apple Maps WFD catchment Lower River Cober (GB108048001172) 2024 spills / hours 2 / 0.7 Long-term average 4.8 spills a year (monitored since 2016) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.2 hours spilling →	River Cober (via SWS)	2	0.2	no change	100%
Swanpool Pscso/EO Storm discharge at pumping station Company site name SWANPOOL SPS_PSCSOEO_FALMOUTH EA ID / permit SBB01197 · 301668 Outlet location SW80033168 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Swanpool 2024 spills / hours 1 / 0.4 Long-term average 0.6 spills a year (monitored since 2010) Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 0.2 hours spilling →	Swanpool (S)	1	0.2	no change	99%

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.