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
Hartopp Road CSO Storm discharge at pumping station Company site name HARTOPP ROAD_PSCSOEO_EXMOUTH EA ID / permit SBB00544 · 200122/CS/01 Outlet location SX99968146 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Exmouth Shellfish water Exe Estuary 2024 spills / hours 82 / 660 Long-term average 56.3 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 490 hours spilling →	Exe Estuary	61	490	down 26%	100%
Constantine Bridge Pumping Station Storm discharge at pumping station Company site name CONSTANTINE BRIDGE SPS_PSCSOEO_FALMOUTH EA ID / permit SBB00302 · 302096 Outlet location SW72972900 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Helford River 2024 spills / hours 40 / 381 Long-term average 28.0 spills a year (monitored since 2010) 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 489 hours spilling →	Nanceroy Stream (S)	41	489	up 3%	100%
Hawkchurch STW Inlet overflow at sewage works Sewage works Hawkchurch Company site name HAWKCHURCH STW_SO_HAWKCHURCH EA ID / permit SBB00548 · SWWA 2412 Outlet location ST34060088 (OS grid reference) · View on Apple Maps WFD catchment Blackwater River (GB108045008850) 2024 spills / hours 53 / 421 Long-term average 69.3 spills a year (monitored since 2021) High-spill reason (company) Performance - SW Infiltration Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 488 hours spilling →	Blackwater River/Stream (S)	37	488	down 30%	96%
Bridge House CSO Overflow on sewer network Company site name BRIDGE HOUSE_CSO_COLYFORD EA ID / permit SBB00154 · 201881 Outlet location SY25369266 (OS grid reference) · View on Apple Maps WFD catchment Umborne Brook (GB108045008880) 2024 spills / hours 86 / 945 Long-term average 58.3 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 488 hours spilling →	River Coly (S)	63	488	down 27%	95%
Brownston STW Inlet overflow at sewage works Sewage works Brownston Company site name BROWNSTON STW_SO_LOWER BROWNSTON EA ID / permit SBB00173 · 203603 Outlet location SX69705277 (OS grid reference) · View on Apple Maps WFD catchment Sheepham Bk (GB108046005070) 2024 spills / hours 49 / 590 Long-term average 36.0 spills a year (monitored since 2022) High-spill reason (company) Not Applicable - Ongoing investigation Investigation Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 486 hours spilling →	Shilston Brook(S)	59	486	up 20%	100%
Echo Corner Pscso/EO Storm discharge at pumping station Company site name PORTHTOWAN No2 SPST_PSCSOEO_PORTHTOWAN EA ID / permit SBB00402 · 302099 Outlet location SW69534743 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Porthtowan 2024 spills / hours 44 / 646 Long-term average 46.1 spills a year (monitored since 2010) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 486 hours spilling →	Porthtowan Stream (S)	42	486	down 5%	100%
Diptford Sewage Treatment Works Inlet overflow at sewage works Sewage works Diptford Company site name DIPTFORD STW_SO_DIPTFORD EA ID / permit SBB00364 · 200400 Outlet location SX72425652 (OS grid reference) · View on Apple Maps WFD catchment Avon - Upper (GB108046004940) Shellfish water Bigbury and Avon 2024 spills / hours 143 / 493 Long-term average 115.6 spills a year (monitored since 2021) High-spill reason (company) Not Applicable - Ongoing investigation Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 485 hours spilling →	River Avon	111	485	down 22%	100%
Hayle Sewage Treatment Works Storm tank at sewage works Sewage works Hayle Company site name HAYLE STW_SSO_HAYLE EA ID / permit SBB00553 · NRA-SW-0782 Outlet location SW55934326 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Porthkidney Sands 2024 spills / hours 65 / 818 Long-term average 54.2 spills a year (monitored since 2010) High-spill reason (company) Performance - SW Infiltration Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 475 hours spilling →	Atlantic (C)	49	475	down 25%	100%
East Allington WwTW Storm tank at sewage works Sewage works East Allington Company site name EAST ALLINGTON STW_SSO_EAST ALLINGTON EA ID / permit SBB00389 · SWWA 852 Outlet location SX76544874 (OS grid reference) · View on Apple Maps WFD catchment Small Bk (GB108046004870) 2024 spills / hours 47 / 570 Long-term average 40.0 spills a year (monitored since 2019) High-spill reason (company) Performance - SW Infiltration Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 472 hours spilling →	Small Brook	40	472	down 15%	100%
Uffculme Pumping Station Storm discharge at pumping station Company site name UFFCULME SPS_PSCSOEO_UFFCULME EA ID / permit SBB01292 · 203111 Outlet location ST06321196 (OS grid reference) · View on Apple Maps WFD catchment Lower Culm (GB108045014970) 2024 spills / hours 79 / 658 Long-term average 44.3 spills a year (monitored since 2018) High-spill reason (company) Performance - SW Infiltration Investigation UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 464 hours spilling →	River Culm	64	464	down 19%	100%
Rilla Mill WwTW Inlet overflow at sewage works Sewage works Rilla Mill Company site name RILLA MILL STW_SO_RILLA MILL EA ID / permit SBB01026 · NRA-SW-6622 Outlet location SX29417337 (OS grid reference) · View on Apple Maps WFD catchment Lower River Lynher (GB108047007670) 2024 spills / hours 19 / 152 Long-term average 222.1 spills a year (monitored since 2018) High-spill reason (company) Performance - SW Infiltration Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 464 hours spilling →	(S) River Lynher	38	464	up 100%	98%
Haye Road Combined Sewer Overflow Overflow on sewer network Company site name HAYE ROAD_CSO_CALLINGTON EA ID / permit SBB00550 · 303530 Outlet location SX35016989 (OS grid reference) · View on Apple Maps WFD catchment Lower River Lynher (GB108047007670) 2024 spills / hours 79 / 267 Long-term average 74.2 spills a year (monitored since 2019) 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 462 hours spilling →	Haye Valley Stream	77	462	down 3%	100%
Crockernwell Sewage Treatment Works Inlet overflow at sewage works Sewage works Crockernwell Company site name CROCKERNWELL STW_SO_TEDBURN EA ID / permit SBB00323 · 203889 Outlet location SX75579242 (OS grid reference) · View on Apple Maps WFD catchment Scotley Brook (GB108046008600) 2024 spills / hours 84 / 260 Long-term average 86.5 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 459 hours spilling →	Scotley Brook(S)	104	459	up 24%	100%
Pillaton Wastewater Treatmemt Works Storm tank at sewage works Sewage works Pillaton Wastewater Treatmemt Works Company site name PILLATON STW_SSO_PILLATON EA ID / permit SBB00937 · NRA-SW-6741 Outlet location SX36046400 (OS grid reference) · View on Apple Maps WFD catchment Lower River Lynher (GB108047007670) 2024 spills / hours 12 / 94 Long-term average 46.3 spills a year (monitored since 2019) High-spill reason (company) Performance - SW Infiltration Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 453 hours spilling →	River Lynher	33	453	up 175%	100%
Lee Mill STW Inlet overflow at sewage works Sewage works Lee Mill Company site name LEE MILL STW_SO_PLYMOUTH EA ID / permit SBB00678 · NRA-SW-0237 Outlet location SX59945570 (OS grid reference) · View on Apple Maps WFD catchment Lower River Yealm (GB108047004010) 2024 spills / hours 185 / 770 Long-term average 145.2 spills a year (monitored since 2019) High-spill reason (company) Performance - SW Infiltration Investigation Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 449 hours spilling →	(S) Unnamed Trib River Yealm	116	449	down 37%	100%
Bonhay Road CSO Overflow on sewer network Company site name BONHAY RD_CSO_STARCROSS EA ID / permit SBB00132 · 202625 Outlet location SX97838190 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Exe Estuary 2024 spills / hours 45 / 362 Long-term average 18.0 spills a year (monitored since 2015) 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 443 hours spilling →	Tidal River Exe(E)	32	443	down 29%	100%
Trevone Pumping Station Storm discharge at pumping station Company site name TREVONE SPST_PSCSOEO_PADSTOW EA ID / permit SBB01284 · 300014 Outlet location SW88647605 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Trevone Bay 2024 spills / hours 43 / 863 Long-term average 27.0 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 441 hours spilling →	Trevone Bay	23	441	down 47%	99%
Gunnislake WwTW Inlet overflow at sewage works Sewage works Gunnislake Company site name GUNNISLAKE STW_SO_GUNNISLAKE EA ID / permit SBB00522 · SWWA 2413 Outlet location SX43437067 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 83 / 233 Long-term average 68.0 spills a year (monitored since 2019) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 440 hours spilling →	River Tamar (Estuarine)	72	440	down 13%	100%
Stockland STW Storm tank at sewage works Sewage works Stockland Company site name STOCKLAND STW_SSO_STOCKLAND EA ID / permit SBB01173 · DRA 1435 Outlet location ST24900408 (OS grid reference) · View on Apple Maps WFD catchment Yarty (GB108045015130) 2024 spills / hours 0 / 0.0 Long-term average 10.3 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 439 hours spilling →	Watercourse	41	439	up from 0	100%
Northlew Sewage Treatment Works Storm tank at sewage works Sewage works Northlew Company site name NORTHLEW STW_SSO_HATHERLEIGH EA ID / permit SBB00857 · 200413 Outlet location SX50459894 (OS grid reference) · View on Apple Maps WFD catchment Northlew Stream (GB108050008140) 2024 spills / hours 69 / 519 Long-term average 78.4 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 437 hours spilling →	Northlew Strm and Tributary(S)	76	437	up 10%	93%
Poundwell Meadow CSO Overflow on sewer network Company site name POUNDWELL MEADOW_CSO_MODBURY EA ID / permit SBB00978 · 201962 Outlet location SX65735146 (OS grid reference) · View on Apple Maps WFD catchment Ayleston Brook (GB108046005020) Bathing water Mothecombe; Coastguards Beach, Erme Estuary 2024 spills / hours 38 / 567 Long-term average 37.3 spills a year (monitored since 2015) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 437 hours spilling →	Tributary of Ayleston Brook	33	437	down 13%	99%
Bridgerule WwTW Inlet overflow at sewage works Sewage works Bridgerule Company site name BRIDGERULE STW_SO_BRIDGERULE EA ID / permit SBB00159 · NRA-SW-0406 Outlet location SS27170236 (OS grid reference) · View on Apple Maps WFD catchment Tamar (Small Brook to River Deer) (GB108047008050) 2024 spills / hours 40 / 469 Long-term average 35.0 spills a year (monitored since 2021) High-spill reason (company) Performance - SW Infiltration Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 436 hours spilling →	River Tamar	34	436	down 15%	100%
Clements Farm Pumping Station Storm discharge at pumping station Company site name CLEMENTS FARM SPS_PSCSOEO_TORQUAY EA ID / permit SBB00273 · 201622 Outlet location SX90056620 (OS grid reference) · View on Apple Maps WFD catchment Aller Brook (Teign) - Upper (GB108046005330) 2024 spills / hours 64 / 1,176 Long-term average 32.9 spills a year (monitored since 2016) High-spill reason (company) Not Applicable - Ongoing investigation Investigation Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 434 hours spilling →	Trib of Aller Brook	35	434	down 45%	100%
Strete WwTW Inlet overflow at sewage works Sewage works Strete Company site name STRETE STW_SO_DARTMOUTH EA ID / permit SBB01190 · 203410 Outlet location SX84514667 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 68 / 630 Long-term average 64.7 spills a year (monitored since 2019) High-spill reason (company) Performance - SW Infiltration Investigation Operational investigation completed Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 433 hours spilling →	Start Bay, English Channel	49	433	down 28%	100%
War Memorial Pscso/EO Storm discharge at pumping station Company site name WAR MEMORIAL SPS_PSCSOEO_ALTARNUN EA ID / permit SBB01315 · 301598 Outlet location SX22388133 (OS grid reference) · View on Apple Maps WFD catchment Penpont Water (GB108047007700) 2024 spills / hours 7 / 26 Long-term average 8.8 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 433 hours spilling →	Peneont Water (S)	25	433	up 257%	100%
Harrowbeer CSO Overflow on sewer network Company site name HARROWBEER_CSO_YELVERTON EA ID / permit SBB00541 · 301898 Outlet location SX51896850 (OS grid reference) · View on Apple Maps WFD catchment Walkham (GB108047007870) 2024 spills / hours 89 / 252 Long-term average 71.5 spills a year (monitored since 2022) High-spill reason (company) Not Applicable - Ongoing investigation Investigation Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 431 hours spilling →	River Tavy (S)	83	431	down 7%	100%
Stibb Cross STW Inlet overflow at sewage works Sewage works Stibb Cross Company site name STIBB CROSS STW_SO_TORRINGTON EA ID / permit SBB01169 · NRA-SW-1558 Outlet location SS42851476 (OS grid reference) · View on Apple Maps WFD catchment Combe Lake (GB108050014250) 2024 spills / hours 105 / 1,069 Long-term average 87.3 spills a year (monitored since 2022) High-spill reason (company) Performance - SW Infiltration Investigation Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 429 hours spilling →	Trib. of Combe Lake	58	429	down 45%	100%
Trusham Sewage Treatment Works Inlet overflow at sewage works Sewage works Trusham Company site name TRUSHAM STW_SO_TEIGN VALLEY EA ID / permit SBB01288 · 203566 Outlet location SX85188214 (OS grid reference) · View on Apple Maps WFD catchment Teign (Lower) (GB108046008540) 2024 spills / hours 93 / 984 Long-term average 75.3 spills a year (monitored since 2022) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation UWWTR investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 427 hours spilling →	Trusham Stream(S)	59	427	down 37%	100%
East Prawle STW Inlet overflow at sewage works Sewage works East Prawle Company site name EAST PRAWLE STW_SO_SALCOMBE EA ID / permit SBB00395 · 202193/CS/01 Outlet location SX78353640 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 107 / 1,060 Long-term average 119.0 spills a year (monitored since 2021) 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, Operational improvement ongoing Volume & pollution Estimate from 424 hours spilling →	Unnamed Coastal Stream(S)	60	424	down 44%	100%
Chacewater BROOK_CSO_TRURO Overflow on sewer network EA ID / permit SBB01409 · Unpermitted Outlet location SW75134447 (OS grid reference) · View on Apple Maps WFD catchment Upper Carnon River (GB108048001160) 2024 spills / hours 11 / 62 Long-term average 16.3 spills a year (monitored since 2023) High-spill reason (company) Performance - SW Infiltration Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 423 hours spilling →	Carnon River	38	423	up 245%	98%
Wilmington STW Inlet overflow at sewage works Sewage works Wilmington Company site name WILMINGTON STW_SSO_WILMINGTON EA ID / permit SBB01365 · NRA-SW-2877 Outlet location ST21700010 (OS grid reference) · View on Apple Maps WFD catchment Umborne Brook (GB108045008880) 2024 spills / hours 64 / 667 Long-term average 54.2 spills a year (monitored since 2021) High-spill reason (company) Performance - SW Infiltration Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 419 hours spilling →	(S) Umborne Brook	34	419	down 47%	100%
Feniton Wastewater Treatment Works Storm tank at sewage works Sewage works Feniton Company site name FENITON STW_SSO_FENITON EA ID / permit SBB00444 · NRA-SW-3706 Outlet location SY11579889 (OS grid reference) · View on Apple Maps WFD catchment Lower River Otter (GB108045009170) 2024 spills / hours 114 / 1,886 Long-term average 62.8 spills a year (monitored since 2019) High-spill reason (company) Performance - SW Infiltration Investigation Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 414 hours spilling →	River Otter	33	414	down 71%	99%
Smugglers Lane Pseo Storm discharge at pumping station Company site name SMUGGLERS LANE SPS_PSCSOEO_DAWLISH EA ID / permit SBB01096 · 203688 Outlet location SX95687464 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Teignmouth Holcombe 2024 spills / hours 69 / 217 Long-term average 51.8 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 Volume & pollution Estimate from 412 hours spilling →	Babbacombe Bay(C)	53	412	down 23%	100%
Fluxton Wastewater Treatment Works Storm tank at sewage works Sewage works Fluxton Company site name FLUXTON STW_SSO_OTTERY ST MARY EA ID / permit SBB00461 · SWWA 944 Outlet location SY08909256 (OS grid reference) · View on Apple Maps WFD catchment Lower River Otter (GB108045009170) 2024 spills / hours 44 / 453 Long-term average 29.5 spills a year (monitored since 2019) High-spill reason (company) Performance - SW Infiltration Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 409 hours spilling →	Tributary of the River Otter	35	409	down 20%	100%
Veryan STW Inlet overflow at sewage works Sewage works Veryan Company site name VERYAN STW_SO_VERYAN EA ID / permit SBB01302 · NRA-SW-6742 Outlet location SW90913978 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 4 / 2.0 Long-term average 10.8 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement UWWTR improvement completed Volume & pollution Estimate from 409 hours spilling →	Carne Stream	21	409	up 425%	100%
Talaton Wastewater Treatment Works Inlet overflow at sewage works Sewage works Talaton Company site name TALATON STW_SO_TALATON EA ID / permit SBB01203 · SWWA 2064 Outlet location SY07399878 (OS grid reference) · View on Apple Maps WFD catchment Tale (GB108045009200) 2024 spills / hours 18 / 145 Long-term average 70.8 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 408 hours spilling →	Trib of River Tale	29	408	up 61%	100%
Goonmarris Pscso/EO Overflow on sewer network Company site name GOONAMARRIS_CSO_NANPEAN EA ID / permit SBB00501 · 301582 Outlet location SW95645506 (OS grid reference) · View on Apple Maps WFD catchment Gwindra Stream (GB108048001350) 2024 spills / hours 75 / 404 Long-term average 61.3 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 404 hours spilling →	Gwindra Stream(S)	66	404	down 12%	100%
Yeolmbridge CSO Overflow on sewer network Company site name YEOLMBRIDGE_CSO_YEOLMBRIDGE EA ID / permit SBB01391 · 301899 Outlet location SX31778738 (OS grid reference) · View on Apple Maps WFD catchment Lower River Ottery (GB108047007981) 2024 spills / hours 59 / 456 Long-term average 35.8 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 403 hours spilling →	River Yeolm (S)	47	403	down 20%	98%
Helebridge WwTW Inlet overflow at sewage works Sewage works Helebridge Company site name HELEBRIDGE STW_SO_BUDE EA ID / permit SBB00559 · 301299 Outlet location SS18910639 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 94 / 451 Long-term average 98.5 spills a year (monitored since 2019) High-spill reason (company) Performance - SW Infiltration Investigation Operational investigation completed Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 403 hours spilling →	Bude Bay (Atlantic Ocean)	80	403	down 15%	97%
WwTW at Lapford Inlet overflow at sewage works Sewage works At Lapford Company site name LAPFORD STW_SO_LAPFORD EA ID / permit SBB00670 · NPSWQD008007 Outlet location SS73620762 (OS grid reference) · View on Apple Maps WFD catchment Lower River Yeo (Lapford) (GB108050014640) 2024 spills / hours 111 / 477 Long-term average 103.0 spills a year (monitored since 2021) High-spill reason (company) Performance - SW Infiltration Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 402 hours spilling →	The River Dalch	92	402	down 17%	100%
Fluxton Wastewater Treatment Works Inlet overflow at sewage works Sewage works Fluxton Company site name FLUXTON STW_SO_OTTERY ST MARY EA ID / permit SBB00460 · SWWA 944 Outlet location SY08909256 (OS grid reference) · View on Apple Maps WFD catchment Lower River Otter (GB108045009170) 2024 spills / hours 89 / 522 Long-term average 68.8 spills a year (monitored since 2019) High-spill reason (company) Performance - SW Infiltration Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 400 hours spilling →	Tributary of the River Otter	72	400	down 19%	100%
Bathpool STW Inlet overflow at sewage works Sewage works Bathpool Company site name BATHPOOL STW_SO_BATHPOOL EA ID / permit SBB00079 · 302121 Outlet location SX28407460 (OS grid reference) · View on Apple Maps WFD catchment Withey Brook (GB108047007680) 2024 spills / hours 20 / 297 Long-term average 23.8 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 399 hours spilling →	River Lyner (S)	26	399	up 30%	98%
Sandy Lane Pumping Station Storm discharge at pumping station Company site name SANDY LANE SPST_PSCSOEO_DAWLISH EA ID / permit SBB01052 · 200898 Outlet location SX97427647 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Dawlish Town 2024 spills / hours 48 / 390 Long-term average 36.6 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 396 hours spilling →	Lyme Bay (C)	46	396	down 4%	100%
Ringmore STW Storm tank at sewage works Sewage works Ringmore Company site name RINGMORE STW_SO_RINGMORE EA ID / permit SBB01028 · 203013 Outlet location SX64654578 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 37 / 576 Long-term average 35.3 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 395 hours spilling →	Ringmore Stream(S)	26	395	down 30%	100%
Porthcurno Valley Pumping Station Storm discharge at pumping station Company site name PORTHCURNO SPS_PSCSOEO_PENZANCE EA ID / permit SBB00962 · 303618 Outlet location SW38732208 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Porthcurno 2024 spills / hours 57 / 981 Long-term average 50.1 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 394 hours spilling →	Atlantic Ocean, Off Porthcurno	24	394	down 58%	100%
Mylor Bridge Pscso/EO Storm discharge at pumping station Company site name LEMON ARMS SPST_PSCSOEO_MYLOR BRIDGE EA ID / permit SBB00823 · 301654 Outlet location SW80523604 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Fal Estuary 2024 spills / hours 30 / 295 Long-term average 22.0 spills a year (monitored since 2010) 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 391 hours spilling →	Mylor Creek (E)	38	391	up 27%	100%
West Charleton STW Storm tank at sewage works Sewage works West Charleton Company site name WEST CHARLETON STW_SSO_CHARLETON EA ID / permit SBB01337 · 203206 Outlet location SX75204235 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Salcombe 2024 spills / hours 73 / 1,003 Long-term average 52.5 spills a year (monitored since 2017) High-spill reason (company) Performance - SW Infiltration Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement Env Act (SODRP) improvement ongoing, Bathing Water and/or Shellfish Water improvement ongoing Volume & pollution Estimate from 391 hours spilling →	Charleton Stream(S)	46	391	down 37%	100%
Holbeton Sewage Treatment Works Storm tank at sewage works Sewage works Holbeton Company site name HOLBETON STW_SSO_HOLBETON EA ID / permit SBB00576 · 202413 Outlet location SX62464979 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Mothecombe; Coastguards Beach, Erme Estuary 2024 spills / hours 27 / 98 Long-term average 69.0 spills a year (monitored since 2014) High-spill reason (company) Performance - SW Infiltration Monitor below 90% Sensor failure / issue · Resolved - Dec Investigation Operational investigation completed Improvement Operational improvement ongoing, Bathing Water and/or Shellfish Water improvement ongoing Volume & pollution Estimate from 388 hours spilling →	River Erme(E)	46	388	up 70%	49%
Gorran Haven Pscso/EO Storm discharge at pumping station Company site name GORRAN HAVEN SPST_PSCSOEO_GORRAN HAVEN EA ID / permit SBB00504 · 302104 Outlet location SX01524146 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Gorran Haven Little Perhaver 2024 spills / hours 76 / 488 Long-term average 58.9 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 387 hours spilling →	Atlantic Ocean (C)	50	387	down 34%	96%
Newport Industrial Estate CSO Overflow on sewer network Company site name NEWPORT_CSO_LAUNCESTON EA ID / permit SBB00834 · 301850 Outlet location SX33518492 (OS grid reference) · View on Apple Maps WFD catchment Kensey (GB108047007960) 2024 spills / hours 92 / 274 Long-term average 102.9 spills a year (monitored since 2016) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 387 hours spilling →	River Kensey	118	387	up 28%	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.