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
Darthaven Marina Pumping Station Overflow on sewer network Company site name DARTHAVEN MARINA SPS_PSCSOEO_KINGSWEAR EA ID / permit SBB00348 · 202398 Outlet location SX88175141 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 49 / 13 Long-term average 53.6 spills a year (monitored since 2016) 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 11 hours spilling →	River Dart (Estuarine)	33	11	down 33%	100%
Southville Embankment PS Storm discharge at pumping station Company site name SOUTHVILLE SPST_PSCSOEO_KINGSBRIDGE EA ID / permit SBB01109 · 203618 Outlet location SX73964303 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Salcombe 2024 spills / hours 9 / 14 Long-term average 9.1 spills a year Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 11 hours spilling →	Kingsbridge Estuary(E)	8	11	down 11%	100%
Cobb Gate Pumping Station Storm discharge at pumping station Company site name THE COBB SPS_PSCSOEO_LYME REGIS EA ID / permit SBB00282 · 3965 Outlet location SY33849143 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Lyme Regis Front Beach 2024 spills / hours 13 / 32 Long-term average 10.3 spills a year (monitored since 2010) Investigation UWWTR investigation completed Improvement Env Act (SODRP) improvement ongoing, Bathing Water and/or Shellfish Water improvement ongoing Volume & pollution Estimate from 11 hours spilling →	Lyme Bay (C)	8	11	down 38%	100%
Preston Green Attenuation Tank Storm discharge at pumping station Company site name PRESTON GREEN TANK_CSO_PAIGNTON EA ID / permit SBB00982 · 200239 Outlet location SX89876185 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Paignton Preston Sands 2024 spills / hours 7 / 3.3 Long-term average 15.6 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 10 hours spilling →	Preston Sands (C)	11	10	up 57%	100%
Magdalen Road CSO Overflow on sewer network Company site name MAGDALEN RD_CSO_EXETER EA ID / permit SBB00738 · 201923 Outlet location SX92239188 (OS grid reference) · View on Apple Maps WFD catchment Exe (Creedy to Estuary) (GB108045009040) Shellfish water Exe Estuary 2024 spills / hours 19 / 18 Long-term average 12.3 spills a year (monitored since 2018) Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 10 hours spilling →	River Exe via SWS	13	10	down 32%	99%
Waterside Pumping Station Storm discharge at pumping station Company site name WATERSIDE No1 SPST_PSCSOEO_SALTASH EA ID / permit SBB01320 · 301482 Outlet location SX43255853 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 4 / 2.1 Long-term average 14.4 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 10 hours spilling →	River Tamar Estuary(E)	8	10	up 100%	100%
Chacewater STW Inlet overflow at sewage works Sewage works Chacewater Company site name CHACEWATER STW_SO_CHACEWATER EA ID / permit SBB00223 · NRA-SW-6619 Outlet location SW75274409 (OS grid reference) · View on Apple Maps WFD catchment Upper Carnon River (GB108048001160) Shellfish water Fal Estuary 2024 spills / hours 31 / 223 Long-term average 25.2 spills a year (monitored since 2020) Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 10 hours spilling →	(S) River Carnon	11	10	down 65%	96%
Malborough Village Pumping Station Inlet overflow at sewage works Sewage works Malborough Village Pumping Station Company site name MALBOROUGH STW_SO_SALCOMBE EA ID / permit SBB00741 · 001685/PC/01 Outlet location SX71183882 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Salcombe South Sands 2024 spills / hours 4 / 5.3 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 10 hours spilling →	Combe Stream (S)	6	10	up 50%	100%
Newnham Road CSO Overflow on sewer network Company site name NEWNHAM ROAD_CSO_COLEBROOK EA ID / permit SBB00833 · 301756 Outlet location SX54235683 (OS grid reference) · View on Apple Maps WFD catchment Tory Brook (GB108047003640) 2024 spills / hours 33 / 22 Long-term average 48.4 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 10 hours spilling →	Tory Brook via SWS	22	10	down 33%	100%
Bosorne Road Sewer Overflow Overflow on sewer network Company site name BOSORNE RD 2_CSOEO_ST JUST EA ID / permit SBB00136 · 303091 Outlet location SW35633086 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 48 / 129 Long-term average 26.8 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 10 hours spilling →	Atlantic / Porth Nanven Stream	13	10	down 73%	100%
Ilsham Marine Drive CSO Overflow on sewer network Company site name ILSHAM MARINE DRIVE_CSO_TORQUAY EA ID / permit SBB00604 · 200227/CS/01 Outlet location SX94936358 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 0 / 0.0 Long-term average 4.7 spills a year (monitored since 2017) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 10.0 hours spilling →	Tor Bay (Coastal)	21	10.0	up from 0	91%
Bridford WwTW Inlet overflow at sewage works Sewage works Bridford Company site name BRIDFORD STW_SO_TEIGN VALLEY EA ID / permit SBB00152 · NRA-SW-6988 Outlet location SX81768610 (OS grid reference) · View on Apple Maps WFD catchment Teign (Lower) (GB108046008540) 2024 spills / hours 27 / 9.8 Long-term average 22.0 spills a year (monitored since 2019) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 9.9 hours spilling →	Rookery Brook	31	9.9	up 15%	97%
Barris CSO Overflow on sewer network Company site name BARRIS VIEW_CSO_LAPFORD EA ID / permit SBB00074 · 201847 Outlet location SS72690804 (OS grid reference) · View on Apple Maps WFD catchment Lower River Yeo (Lapford) (GB108050014640) 2024 spills / hours 6 / 41 Long-term average 3.0 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 9.9 hours spilling →	River Yeo (S)	6	9.9	no change	94%
Overseas Estate West PS Storm discharge at pumping station Company site name O/SEAS EST W SPS_PSCSOEO_STOKE FLEMING EA ID / permit SBB00895 · 203452 Outlet location SX86204784 (OS grid reference) · View on Apple Maps WFD catchment Devon South (GB620806110002) Shellfish water Dart 2024 spills / hours 18 / 17 Long-term average 42.5 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 9.6 hours spilling →	English Channel (Coastal)	24	9.6	up 33%	100%
Padstow Harbour Pumping Station Storm discharge at pumping station Company site name PADSTOW HARBOUR SPS_PSCSOEO_PADSTOW EA ID / permit SBB00899 · 302973 Outlet location SW92017545 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Camel Estuary 2024 spills / hours 3 / 28 Long-term average 4.0 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 9.6 hours spilling →	River Camel Estuary	3	9.6	no change	100%
Laflouder Lane Pumping Station Storm discharge at pumping station Company site name LAFLOUDER LANE SPS_PSCSOEO_MULLION EA ID / permit SBB00653 · 302948 Outlet location SW66511902 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 4 / 10 Long-term average 3.7 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 9.5 hours spilling →	English Channel (Coastal)	1	9.5	down 75%	100%
Hawkings Way Credition CSO Overflow on sewer network Company site name HAWKINS WAY CREDITON_CSO_CREDITON EA ID / permit SBB00549 · 201867 Outlet location SS84480041 (OS grid reference) · View on Apple Maps WFD catchment Middle Creedy (GB108045009090) 2024 spills / hours 18 / 10 Long-term average 18.7 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 9.4 hours spilling →	Trib of River Creedy via SWS	21	9.4	up 17%	98%
78 Beaumont Road CSO Overflow on sewer network Company site name 78 BEAUMONT ROAD_CSO_PLYMOUTH EA ID / permit SBB00034 · 301782 Outlet location SX50155478 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 23 / 9.6 Long-term average 23.0 spills a year (monitored since 2017) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 9.4 hours spilling →	River Plym via SWS (Estuarine)	30	9.4	up 30%	99%
Larkbeare House CSO Overflow on sewer network Company site name LARKBEARE HSE_CSO_EXETER EA ID / permit SBB00671 · 201928 Outlet location SX92239189 (OS grid reference) · View on Apple Maps WFD catchment Exe (Creedy to Estuary) (GB108045009040) Shellfish water Exe Estuary 2024 spills / hours 6 / 4.8 Long-term average 6.0 spills a year (monitored since 2018) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 9.4 hours spilling →	River Exe via SWS	13	9.4	up 117%	100%
Seymour Avenue/Beaumont Rd CSO Overflow on sewer network Company site name SEYMOUR AVENUE/BEAUMONT RD_CSO_PLYMOUTH EA ID / permit SBB01069 · 301735 Outlet location SX50155478 (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 16 / 8.2 Long-term average 19.5 spills a year (monitored since 2017) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 9.2 hours spilling →	River Plym via SWS (Estuarine)	28	9.2	up 75%	99%
Fraddon Junction CSO Overflow on sewer network Company site name JUNCTION A39 FRADDON_CSO_FRADDON EA ID / permit SBB00476 · 301843 Outlet location SW91265832 (OS grid reference) · View on Apple Maps WFD catchment Gannel (Upper) (GB108049000230) 2024 spills / hours 7 / 7.0 Long-term average 9.5 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 9.1 hours spilling →	River Gannel(S)	23	9.1	up 229%	100%
Clennon Valley Pumping Station Overflow on sewer network Company site name CLENNON VALLEY SPS_PSCSOEO_PAIGNTON 2 EA ID / permit SBB00274 · 201396 Outlet location SX89846036 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Paignton Paignton Sands 2024 spills / hours 2 / 4.5 Long-term average 6.3 spills a year (monitored since 2011) 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 8.9 hours spilling →	English Channel	7	8.9	up 250%	100%
Hackney PS Storm discharge at pumping station Company site name HACKNEY LANE SPST_PSCSOEO_KINGSTEIGNTON EA ID / permit SBB00529 · 203337 Outlet location SX87447223 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Teign Estuary 2024 spills / hours 5 / 24 Long-term average 5.2 spills a year Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 8.8 hours spilling →	Trib of R.Teign(S)	6	8.8	up 20%	100%
Porthilly Cove Pumping Station Storm discharge at pumping station Company site name PORTHILLY COVE SPST_PSCSOEO_PORTHILLY 2 EA ID / permit SBB00963 · 302972 Outlet location SW93737545 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Camel Estuary 2024 spills / hours 16 / 26 Long-term average 7.8 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 8.7 hours spilling →	River Camel Estuary via SWS	5	8.7	down 69%	100%
Newham Road Pumping Station Storm discharge at pumping station Company site name NEWHAM ROAD SPST_PSCSOEO_TRURO EA ID / permit SBB00992 · 303468 Outlet location SW82974416 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Fal Estuary 2024 spills / hours 13 / 11 Long-term average 24.6 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 8.6 hours spilling →	Truro River (Estuarine)	5	8.6	down 62%	100%
Goldsithney Pscso/EO Storm discharge at pumping station Company site name GOLDSITHNEY SPS_PSCSOEO_GOLDSITHNEY EA ID / permit SBB00497 · 301606 Outlet location SW54173084 (OS grid reference) · View on Apple Maps WFD catchment Marazion River (GB108048002110) 2024 spills / hours 1 / 0.6 Long-term average 1.3 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 8.6 hours spilling →	Stream (S)	4	8.6	up 300%	100%
Shobrooke PS Storm discharge at pumping station Company site name SHOBROOKE SPST_PSCSOEO_SHOBROOKE EA ID / permit SBB01086 · NRA-SW-4101 Outlet location SS87120132 (OS grid reference) · View on Apple Maps WFD catchment Shobrooke Lake (GB108045009100) 2024 spills / hours 4 / 12 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 8.6 hours spilling →	Shobrooke Lake	3	8.6	down 25%	100%
Millmoor CSO Overflow on sewer network Company site name MILLMOOR_CSO_CULMSTOCK EA ID / permit SBB00786 · 202236 Outlet location ST10071376 (OS grid reference) · View on Apple Maps WFD catchment Middle Culm (GB108045014980) 2024 spills / hours 33 / 96 Long-term average 19.5 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 8.5 hours spilling →	River Culm(S)	8	8.5	down 76%	100%
Thorncombe WwTW Inlet overflow at sewage works Sewage works Thorncombe Company site name THORNCOMBE STW_SO_THORNCOMBE EA ID / permit SBB01240 · NRA-SW-3897 Outlet location ST38200376 (OS grid reference) · View on Apple Maps WFD catchment Upper Axe (GB108045014840) 2024 spills / hours 12 / 35 Long-term average 11.3 spills a year (monitored since 2019) Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 8.3 hours spilling →	River Synderford	8	8.3	down 33%	100%
Chapel Lane Combined Sewer Overflow Overflow on sewer network Company site name CHAPEL LANE_CSO_OTTERY ST MARY EA ID / permit SBB00231 · 201382 Outlet location SY10149551 (OS grid reference) · View on Apple Maps WFD catchment Lower River Otter (GB108045009170) 2024 spills / hours 22 / 8.0 Long-term average 18.7 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 8.1 hours spilling →	Tributary of the River Otter	28	8.1	up 27%	100%
The Ham PS Tank & CSO - Sidmouth Storm discharge at pumping station Company site name THE HAM SPST_PSCSOEO_SIDMOUTH SD1 EA ID / permit SBB01227 · 200835 Outlet location SY12888733 (OS grid reference) · View on Apple Maps WFD catchment (S) RIVER SID AND (C) LYME BAY (GB108045009160) Bathing water Sidmouth Town 2024 spills / hours 16 / 17 Long-term average 6.7 spills a year Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 8.1 hours spilling →	(S) River Sid and (C) Lyme Bay	9	8.1	down 44%	100%
St Lukes Church CSO Overflow on sewer network Company site name ST LUKES CHURCH_CSO_BUCKFASTLEIGH EA ID / permit SBB01145 · 201802 Outlet location SX73936600 (OS grid reference) · View on Apple Maps WFD catchment Dean Burn (GB108046005190) 2024 spills / hours 26 / 7.2 Long-term average 22.6 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 8.1 hours spilling →	Dean Burn	23	8.1	down 12%	100%
Clawton STW Inlet overflow at sewage works Sewage works Clawton Company site name CLAWTON STW_SO_CLAWTON EA ID / permit SBB00271 · 303598 Outlet location SX35349910 (OS grid reference) · View on Apple Maps WFD catchment Claw (GB108047008060) 2024 spills / hours 11 / 3.0 Long-term average 29.0 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 8.1 hours spilling →	Trib of River Claw(S)	12	8.1	up 9%	100%
Shorton Valley ROAD_CSO_PAIGNTON Overflow on sewer network EA ID / permit SBB01416 · Permit applied for Outlet location SX88816218 (OS grid reference) · View on Apple Maps WFD catchment Tor Bay (GB680806320000) 2024 spills / hours 30 / 7.0 Long-term average 16.7 spills a year (monitored since 2023) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 8.0 hours spilling →	Preston Sands (C)	20	8.0	down 33%	100%
Forder No 2 Pscso/EO Storm discharge at pumping station Company site name FORDER No2 SPS_PSCSOEO_SALTASH EA ID / permit SBB00470 · 302103 Outlet location SX41285811 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 6 / 8.6 Long-term average 9.2 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 8.0 hours spilling →	River Lyner (E)	5	8.0	down 17%	99%
Old Ferry Road CSO Overflow on sewer network Company site name OLD FERRY ROAD_CSO_SALTASH EA ID / permit SBB00872 · 302587 Outlet location SX43295912 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 5 / 1.4 Long-term average 7.4 spills a year (monitored since 2016) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 7.9 hours spilling →	Tamar Estuary(E)	11	7.9	up 120%	100%
Frithelstock STW Inlet overflow at sewage works Sewage works Frithelstock Company site name FRITHELSTOCK STONE STW_SO_FRITHELSTOCK EA ID / permit SBB01395 · NRA-SW-6991 Outlet location SS45221844 (OS grid reference) · View on Apple Maps WFD catchment TIDAL TORRIDGE (GB108050014330) 2024 spills / hours 7 / 7.0 Long-term average 12.8 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 7.9 hours spilling →	Frithelstockstone Stream	24	7.9	up 243%	100%
St Katherine'S Way CSO Overflow on sewer network Company site name ST KATHERINES WAY_ CSO_TOTNES EA ID / permit SBB01140 · EPRDB3893NP Outlet location SX80576019 (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 21 / 11 Long-term average 17.7 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 7.8 hours spilling →	River Dart Estuary via SWS	17	7.8	down 19%	100%
Delabole Wastewater Treatment Works Inlet overflow at sewage works Sewage works Delabole Company site name DELABOLE STW_SO_DELABOLE EA ID / permit SBB00356 · NRA-SW-4934 Outlet location SX07298294 (OS grid reference) · View on Apple Maps WFD catchment Allen (GB108049007050) 2024 spills / hours 74 / 794 Long-term average 158.4 spills a year (monitored since 2016) Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing, UWWTR improvement ongoing Volume & pollution Estimate from 7.7 hours spilling →	River Allen	11	7.7	down 85%	99%
Kings Nympton North STW Inlet overflow at sewage works Sewage works Kings Nympton North Company site name KINGS NYMPTON NORTH STW_SO_KINGS NYMPTON EA ID / permit SBB00640 · 204041 Outlet location SS67871950 (OS grid reference) · View on Apple Maps WFD catchment Mole (Taw to Bray) (GB108050014380) 2024 spills / hours 13 / 18 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 7.7 hours spilling →	Tributary of River Mole	11	7.7	down 15%	100%
Milbury Lane Pumping Station Storm discharge at pumping station Company site name EXMINSTER SPST_PSCSOEO_EXMINSTER 2 EA ID / permit SBB00773 · 201580 Outlet location SX95008834 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Exe Estuary 2024 spills / hours 46 / 107 Long-term average 24.2 spills a year (monitored since 2016) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 7.6 hours spilling →	Trib of the Berry Brook	11	7.6	down 76%	100%
Porthminster Point 1 EO Storm discharge at pumping station Company site name PORTHMINSTER SPS_PSCSOEO_PORTHMINSTER EA ID / permit SBB00966 · 2894/87 Outlet location SW52583957 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Carbis Bay 2024 spills / hours 3 / 12 Long-term average 7.7 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 7.5 hours spilling →	St Ives Bay Atlantic Ocean	6	7.5	up 100%	100%
The Quay Combined Sewer Overflow Overflow on sewer network Company site name THE QUAY_CSO_CALSTOCK EA ID / permit SBB01235 · 301834 Outlet location SX43566855 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 10 / 2.0 Long-term average 23.7 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 7.4 hours spilling →	River Tamar (Estuarine)	19	7.4	up 90%	100%
Cornwall Beach (PS3) Overflow on sewer network Company site name CORNWALL BEACH SPS_PSCSOEO_PLYMOUTH EA ID / permit SBB00307 · 301987 Outlet location SX44755469 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 0 / 0.0 Long-term average 5.0 spills a year (monitored since 2017) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 7.2 hours spilling →	River Tamar (Estuarine)	2	7.2	up from 0	100%
Mousehole Harbour (South Slip) CSO Overflow on sewer network Company site name SOUTH SLIP_CSO_MOUSEHOLE EA ID / permit SBB00812 · 2894/103 Outlet location SW47012617 (OS grid reference) · View on Apple Maps WFD catchment Penzance (GB650806340000) 2024 spills / hours 20 / 7.9 Long-term average 16.8 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 7.1 hours spilling →	Mounts Bay English Channel	17	7.1	down 15%	100%
Ernesettle Lane Sportsground CSO Overflow on sewer network Company site name ERNESETTLE LANE_CSO_PLYMOUTH EA ID / permit SBB00418 · 301770 Outlet location SX44246023 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 64 / 18 Long-term average 49.4 spills a year (monitored since 2018) High-spill reason (company) Not Applicable - Ongoing investigation Monitor below 90% Sensor failure / issue · Resolved - Dec Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 7.0 hours spilling →	River Tamar via SWS (E)	35	7.0	down 45%	89%
Laurel Avenue CSO Overflow on sewer network Company site name LAUREL AVE_CSO_BIDEFORD EA ID / permit SBB00674 · 201945 Outlet location SS43852605 (OS grid reference) · View on Apple Maps WFD catchment Kenwith Stream (GB108050014500) Shellfish water Taw-Torridge Estuary 2024 spills / hours 6 / 1.7 Long-term average 5.2 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 7.0 hours spilling →	Kenwith Stream	11	7.0	up 83%	98%
Manstone Lane CSO Overflow on sewer network Company site name MANSTONE LN_CSO_SIDMOUTH EA ID / permit SBB00743 · 201835 Outlet location SY12628895 (OS grid reference) · View on Apple Maps WFD catchment Sid (GB108045009160) 2024 spills / hours 34 / 8.6 Long-term average 23.5 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 7.0 hours spilling →	Woolbrook	19	7.0	down 44%	99%
St Mellion Pumping Station Overflow on sewer network Company site name ST MELLION COTTS_CSO_SALTASH EA ID / permit SBB01152 · 301878 Outlet location SX39016538 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 0 / 0.0 Long-term average 7.3 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 7.0 hours spilling →	Stream (S)	2	7.0	up from 0	100%
Lower Park Road Pumping Station Storm discharge at pumping station Company site name LOWER PARK ROAD SPS_PSCSOEO_BRAUNTON EA ID / permit SBB00716 · 200211 Outlet location SS49353574 (OS grid reference) · View on Apple Maps WFD catchment Knowl Water (GB108050020020) 2024 spills / hours 12 / 36 Long-term average 10.7 spills a year (monitored since 2018) Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 6.9 hours spilling →	Knowl Water	6	6.9	down 50%	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.