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
Weston Pumping Station Storm discharge at pumping station Company site name WESTON SPS_PSCSOEO_HONITON EA ID / permit SBB01353 · 202181 Outlet location ST14220006 (OS grid reference) · View on Apple Maps WFD catchment Lower River Otter (GB108045009170) 2024 spills / hours 16 / 109 Long-term average 15.4 spills a year (monitored since 2017) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 63 hours spilling →	River Otter	12	63	down 25%	100%
Saunton Road Pumping Station Storm discharge at pumping station Company site name SAUNTON RD SPS_PSCSOEO_BRAUNTON EA ID / permit SBB01054 · 200214/PC/01 Outlet location SS47393690 (OS grid reference) · View on Apple Maps WFD catchment Taw Estuary (GB108050020000) 2024 spills / hours 48 / 124 Long-term average 33.9 spills a year (monitored since 2017) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 63 hours spilling →	Tributary of Sir Arthur'S Pill	25	63	down 48%	100%
Botallack Pumping Station Storm discharge at pumping station Company site name BOTALLACK_PSCSOEO_TREGESEAL EA ID / permit SBB00140 · 303093 Outlet location SW36153312 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 34 / 64 Long-term average 29.9 spills a year (monitored since 2018) High-spill reason (company) Not Applicable - Ongoing investigation Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 63 hours spilling →	Atlantic Ocean (C)	37	63	up 9%	100%
Howell Road CSO Overflow on sewer network Company site name HOWELL ROAD_CSO_EXETER EA ID / permit SBB00600 · 201376 Outlet location SX91469250 (OS grid reference) · View on Apple Maps WFD catchment Exe (Creedy to Estuary) (GB108045009040) Shellfish water Exe Estuary 2024 spills / hours 3 / 37 Long-term average 5.0 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 62 hours spilling →	Higher Leat via SWS	7	62	up 133%	100%
Plaidy Pump Station Overflow on sewer network Company site name PLAIDY SPS_PSCSOEO_LOOE EA ID / permit SBB00941 · 300971 Outlet location SX26495384 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Millendreath 2024 spills / hours 72 / 97 Long-term average 69.5 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 62 hours spilling →	Looe Bay (C)	58	62	down 19%	98%
St Mawgan Pscso/EO Overflow on sewer network Company site name VILLAGE SPS_PSCSOEO_ST MAWGAN EA ID / permit SBB01151 · 301611 Outlet location SW87256600 (OS grid reference) · View on Apple Maps WFD catchment Menalhyl (GB108049000070) Bathing water Mawgan Porth 2024 spills / hours 14 / 70 Long-term average 9.2 spills a year (monitored since 2012) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 62 hours spilling →	River Menalhyl (S)	10	62	down 29%	100%
Tor Park Road Pumping Station Storm discharge at pumping station Company site name TOR PARK SPS_PSCSOEO_PAIGNTON EA ID / permit SBB01251 · 201625 Outlet location SX86565928 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Dart 2024 spills / hours 30 / 200 Long-term average 18.8 spills a year (monitored since 2016) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 61 hours spilling →	Yalberton Stream via SWS	14	61	down 53%	100%
Torridge Vale Dairies CSO Overflow on sewer network Company site name TORRIDGE VALE DAIRIES_CSO_TORRINGTON EA ID / permit SBB01260 · EPRYB3093NU Outlet location SS48571872 (OS grid reference) · View on Apple Maps WFD catchment Torridge (Lew to Estuary) (GB108050014660) Shellfish water Taw-Torridge Estuary 2024 spills / hours 56 / 115 Long-term average 56.9 spills a year (monitored since 2018) 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 61 hours spilling →	River Torridge	46	61	down 18%	98%
Daniels Lane CSO Overflow on sewer network Company site name DANIELS LN_CSO_ST AUSTELL EA ID / permit SBB00346 · 032052/SF/01 Outlet location SX03555253 (OS grid reference) · View on Apple Maps WFD catchment Crinnis River (GB108048001330) Bathing water Shorthorn Beach Shellfish water St Austell Bay 2024 spills / hours 28 / 52 Long-term average 18.4 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 61 hours spilling →	Sandy River	24	61	down 14%	97%
Swallowfields CSO Overflow on sewer network Company site name SWALLOWFIELDS_CSO_TOTNES EA ID / permit SBB01196 · 202964 Outlet location SX80106123 (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 30 / 70 Long-term average 25.8 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 60 hours spilling →	River Dart Estuary (E)	28	60	down 7%	99%
Prince of Wales Road CSO Overflow on sewer network Company site name PRINCE OF WALES RD_CSO_KINGSBRIDGE EA ID / permit SBB00984 · 203437 Outlet location SX73554401 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Salcombe 2024 spills / hours 68 / 615 Long-term average 47.6 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 60 hours spilling →	Kingsbridge Estuary(E)	35	60	down 49%	100%
The Ham PS Tank & CSO - Sidmouth Storm discharge at pumping station Company site name THE HAM SPST_PSCSOEO_SIDMOUTH 2 EA ID / permit SBB01226 · 200835 Outlet location SY12888732 (OS grid reference) · View on Apple Maps WFD catchment Sid (GB108045009160) Bathing water Sidmouth Town 2024 spills / hours 41 / 110 Long-term average 22.8 spills a year Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 60 hours spilling →	(S) River Sid and (C) Lyme Bay	28	60	down 32%	100%
Bideford Fine Screening Storm discharge at pumping station Company site name BIDEFORD FSCN SPST_PSCSOEO_BIDEFORD EA ID / permit SBB00105 · 203116 Outlet location SS45662737 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Taw-Torridge Estuary 2024 spills / hours 38 / 40 Long-term average 38.1 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 59 hours spilling →	River Torridge (E)	31	59	down 18%	100%
Constantine STW Inlet overflow at sewage works Sewage works Constantine Company site name CONSTANTINE STW_SO_CONSTANTINE EA ID / permit SBB00303 · 302487 Outlet location SW73682886 (OS grid reference) · View on Apple Maps WFD catchment Lestraines River (GB108048001870) Shellfish water Helford River 2024 spills / hours 37 / 42 Long-term average 46.2 spills a year (monitored since 2012) High-spill reason (company) Performance - SW Infiltration Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 59 hours spilling →	Lestraines River(S)	41	59	up 11%	100%
Opp 65 Highweek Road CSO Overflow on sewer network Company site name HIGHWEEK RD_CSO_NEWTON ABBOT EA ID / permit SBB00887 · 203338 Outlet location SX85747132 (OS grid reference) · View on Apple Maps WFD catchment Lemon (GB108046008450) Shellfish water Teign Estuary 2024 spills / hours 3 / 31 Long-term average 5.4 spills a year (monitored since 2015) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 59 hours spilling →	River Lemon(S)	8	59	up 167%	99%
20 Commercial Road Overflow on sewer network Company site name COMMERCIAL RD_CSO_PLYMOUTH EA ID / permit SBB00017 · 302147 Outlet location SX48835381 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Plymouth Hoe East 2024 spills / hours 8 / 17 Long-term average 3.6 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 58 hours spilling →	Plymouth Sound (C)	24	58	up 200%	100%
Charlestown Harbour Pscso/EO Storm discharge at pumping station Company site name CHARLESTN REMOTE SPS_PSCSOEO_ST AUSTELL EA ID / permit SBB00236 · 301635 Outlet location SX03925124 (OS grid reference) · View on Apple Maps WFD catchment Crinnis River (GB108048001330) Bathing water Charlestown 2024 spills / hours 21 / 25 Long-term average 27.4 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 58 hours spilling →	St Austell Bay (C)	30	58	up 43%	100%
East Street Pscso/EO Storm discharge at pumping station Company site name EAST STREET A SPS_PSCSOEO_CHULMLEIGH2 EA ID / permit SBB00397 · 201615 Outlet location SS69331433 (OS grid reference) · View on Apple Maps WFD catchment Huntacott Water (GB108050013960) 2024 spills / hours 36 / 64 Long-term average 27.0 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 57 hours spilling →	Trib Little Dart River (S)	34	57	down 6%	100%
Church Square CSO Overflow on sewer network Company site name CHURCH SQUARE_CSO_MENHENIOT EA ID / permit SBB00265 · 301858 Outlet location SX28456235 (OS grid reference) · View on Apple Maps WFD catchment Seaton (GB108048002320) Bathing water Seaton (Cornwall) 2024 spills / hours 6 / 4.4 Long-term average 6.4 spills a year (monitored since 2014) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 57 hours spilling →	Tributary of the River Seaton	12	57	up 100%	100%
Throwleigh STW Inlet overflow at sewage works Sewage works Throwleigh Company site name THROWLEIGH STW_SO_THROWLEIGH EA ID / permit SBB01243 · 202211 Outlet location SX67609055 (OS grid reference) · View on Apple Maps WFD catchment Blackaton Brook (GB108046008580) 2024 spills / hours 42 / 226 Long-term average 24.8 spills a year (monitored since 2022) Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 57 hours spilling →	Unnamed Watercourse(S)	19	57	down 55%	100%
Roberts Ope CSO Overflow on sewer network Company site name ROBERTS OPE_CSO_TRURO EA ID / permit SBB01033 · 302669 Outlet location SW82614475 (OS grid reference) · View on Apple Maps WFD catchment Kenwyn (GB108048002340) Shellfish water Fal Estuary 2024 spills / hours 51 / 72 Long-term average 51.8 spills a year (monitored since 2016) 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 56 hours spilling →	River Kenwyn[S]	38	56	down 25%	100%
Paradise Road (Graveyard) CSO Overflow on sewer network Company site name PARADISE RD GRAVEYARD_CSO_PLYMOUTH EA ID / permit SBB00904 · 301758 Outlet location SX46225441 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 1 / 0.9 Long-term average 48.1 spills a year (monitored since 2016) High-spill reason (company) Not Applicable - Ongoing investigation Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 56 hours spilling →	Stonehouse Creek via SWS (Est)	39	56	up 3800%	99%
Devoran Pumping Station Storm discharge at pumping station Company site name DEVORAN SPS_PSCSOEO_DEVORAN EA ID / permit SBB00363 · 302071 Outlet location SW79133927 (OS grid reference) · View on Apple Maps WFD catchment Lower River Carnon (GB108048001231) Shellfish water Fal Estuary 2024 spills / hours 3 / 5.3 Long-term average 5.0 spills a year Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 56 hours spilling →	River Carnon Estuary(E)	9	56	up 200%	100%
Par Sewage Treatment Works Storm tank at sewage works Sewage works Par Company site name PAR STW_SSO_ST AUSTELL EA ID / permit SBB00902 · 031299/SS/01 Outlet location SX06625088 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Shorthorn Beach 2024 spills / hours 13 / 27 Long-term average 10.9 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 55 hours spilling →	(C) St Austell Bay	11	55	down 15%	100%
Thorverton WwTW Storm tank at sewage works Sewage works Thorverton Company site name THORVERTON STW_SSO_THORVERTON EA ID / permit SBB01242 · DRA 1355 Outlet location SS93590168 (OS grid reference) · View on Apple Maps WFD catchment Exe (Barle to Culm) (GB108045015050) 2024 spills / hours 31 / 121 Long-term average 12.3 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 54 hours spilling →	(S) River Exe	14	54	down 55%	100%
Slittercombe Lane Pscso/EO Storm discharge at pumping station Company site name SLITTERCOMBE SPST_PSCSOEO_KENTON EA ID / permit SBB01094 · 202626 Outlet location SX96138347 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Exe Estuary 2024 spills / hours 34 / 122 Long-term average 10.5 spills a year Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 54 hours spilling →	River Kenn(S)	16	54	down 53%	100%
Porthleven Harbour Attenuation Storm discharge at pumping station Company site name HARBOUR SPS_PSCSOEO_PORTHLEVEN EA ID / permit SBB00965 · 033473/PC/01 Outlet location SW62722539 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Porthleven Sands 2024 spills / hours 6 / 11 Long-term average 10.4 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 53 hours spilling →	Mounts Bay	13	53	up 117%	100%
Dunkeswell PS Overflow on sewer network Company site name DUNKESWELL SPS_PSCSOEO_DUNKESWELL EA ID / permit SBB00383 · 203692 Outlet location ST14260770 (OS grid reference) · View on Apple Maps WFD catchment Madford River (GB108045014920) 2024 spills / hours 18 / 49 Long-term average 11.0 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 53 hours spilling →	Dunkeswell Stream(S)	19	53	up 6%	100%
CSO at Atlantic Hotel Overflow on sewer network Company site name ATLANTIC HOTEL_CSO_ST MARYS EA ID / permit SBB00334 · EPRBB3394VJ Outlet location SV90221065 (OS grid reference) · View on Apple Maps WFD catchment Scilly Isles (GB620807080000) 2024 spills / hours 43 / 179 Long-term average 58.8 spills a year (monitored since 2021) High-spill reason (company) Not Applicable - Ongoing investigation Investigation Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 52 hours spilling →	Atlantic Ocean	60	52	up 40%	100%
Taddiport Bridge Pumping Station Storm discharge at pumping station Company site name TADDIPORT SPS_PSCSOEO_TORRINGTON EA ID / permit SBB01201 · 200075 Outlet location SS48781870 (OS grid reference) · View on Apple Maps WFD catchment Torridge (Lew to Estuary) (GB108050014660) Shellfish water Taw-Torridge Estuary 2024 spills / hours 18 / 66 Long-term average 10.1 spills a year (monitored since 2016) Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 52 hours spilling →	River Torridge	13	52	down 28%	100%
Radford STW Inlet overflow at sewage works Sewage works Radford Company site name RADFORD STW_SO_PLYMOUTH EA ID / permit SBB01011 · 301935 Outlet location SX50195283 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Plymouth Hoe East 2024 spills / hours 47 / 76 Long-term average 54.0 spills a year (monitored since 2010) 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 52 hours spilling →	Hooe Lake	33	52	down 30%	100%
Dunkeswell WwTW Storm tank at sewage works Sewage works Dunkeswell Company site name DUNKESWELL STW_SSO_DUNKESWELL EA ID / permit SBB00385 · 203109 Outlet location ST15190858 (OS grid reference) · View on Apple Maps WFD catchment Madford River (GB108045014920) 2024 spills / hours 6 / 67 Long-term average 15.6 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 52 hours spilling →	River Madford	5	52	down 17%	98%
Bere Alston Combined Sewer Overflow Overflow on sewer network Company site name BERE ALSTON_CSO_BERE ALSTON EA ID / permit SBB00097 · 301824 Outlet location SX44636681 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 40 / 21 Long-term average 42.5 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 52 hours spilling →	Trib of River Tamar via SWS	45	52	up 13%	100%
West Bank Pumping Station Storm discharge at pumping station Company site name WEST BANK SPS_PSCSOEO_OTTERY ST MARY EA ID / permit SBB01334 · 201380 Outlet location SY09299508 (OS grid reference) · View on Apple Maps WFD catchment Lower River Otter (GB108045009170) 2024 spills / hours 8 / 27 Long-term average 5.3 spills a year (monitored since 2016) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 52 hours spilling →	Trib of River Otter	7	52	down 13%	100%
Opp 26 Market STREET_CSO_BUCKFASTLEIGH Overflow on sewer network EA ID / permit SBB01408 · Permit applied for Outlet location SX73596624 (OS grid reference) · View on Apple Maps WFD catchment Mardle (GB108046005220) 2024 spills / hours 18 / 29 Long-term average 25.0 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 51 hours spilling →	River Mardle	32	51	up 78%	100%
Charlestown Pumping Station Storm discharge at pumping station Company site name CHARLESTOWN SPS_PSCSOEO_CHARLESTOWN EA ID / permit SBB00237 · 032051/PC/01 Outlet location SX03875120 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Charlestown Shellfish water St Austell Bay 2024 spills / hours 19 / 38 Long-term average 21.1 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 51 hours spilling →	St Austell Bay, English Chanel	18	51	down 5%	100%
Paignton (Cockington Lane) PS Storm discharge at pumping station Company site name COCKINGTON LANE SPS_PSCSOEO_TORQUAY 1 EA ID / permit SBB00606 · 200223 Outlet location SX90396304 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Torre Abbey 2024 spills / hours 7 / 30 Long-term average 18.6 spills a year (monitored since 2015) Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 51 hours spilling →	Cockington Stream	8	51	up 14%	100%
Northbrook Golf Course Lower CSO Overflow on sewer network Company site name NORTHBROOK GOLF COURSE (LOWER_CSO_EXETER EA ID / permit SBB00854 · 201897 Outlet location SX93829039 (OS grid reference) · View on Apple Maps WFD catchment North Brook (East Devon) (GB108045009050) Shellfish water Exe Estuary 2024 spills / hours 21 / 64 Long-term average 13.1 spills a year (monitored since 2017) Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 51 hours spilling →	Northbrook	19	51	down 10%	100%
Gabber Injector Pumping Station Storm discharge at pumping station Company site name GABBER INJECTOR SPS_PSCSOEO_WEMBURY EA ID / permit SBB00482 · 301615 Outlet location SX50654977 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 10 / 11 Long-term average 9.9 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 50 hours spilling →	Hey Brook	15	50	up 50%	96%
CSO Off Pendarves Road Overflow on sewer network Company site name NORTH PARADE_CSO_FALMOUTH EA ID / permit SBB00341 · 303010 Outlet location SW79893392 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Fal Estuary 2024 spills / hours 60 / 94 Long-term average 54.0 spills a year High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation Operational investigation completed Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 50 hours spilling →	Penryn River	32	50	down 47%	100%
Shand Park CSO Overflow on sewer network Company site name SHAND PARK_CSO_AXMINSTER EA ID / permit SBB01074 · 203642 Outlet location SY29389843 (OS grid reference) · View on Apple Maps WFD catchment Lower Axe (GB108045008870) 2024 spills / hours 20 / 80 Long-term average 18.0 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 50 hours spilling →	Trib of the River Axe	18	50	down 10%	100%
Garrick Close CSO Overflow on sewer network Company site name GARRICK CLOSE_CSO_PLYMOUTH EA ID / permit SBB00486 · 301705 Outlet location SX47265875 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Plymouth Hoe East 2024 spills / hours 24 / 17 Long-term average 29.3 spills a year (monitored since 2017) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 50 hours spilling →	Honicknowle Stream	39	50	up 63%	97%
Jacobstow STW Inlet overflow at sewage works Sewage works Jacobstow Company site name JACOBSTOW STW_SO_JACOBSTOW EA ID / permit SBB00619 · 302127 Outlet location SX20249582 (OS grid reference) · View on Apple Maps WFD catchment Jacob Stream (GB108049007240) 2024 spills / hours 19 / 173 Long-term average 16.0 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 50 hours spilling →	Trib of River Need (S)	13	50	down 32%	99%
Roche Combined Sewer Overflow Overflow on sewer network Company site name ROCHE_CSO_ROCHE EA ID / permit SBB01035 · 301682 Outlet location SW99296034 (OS grid reference) · View on Apple Maps WFD catchment Par River (Upper) (GB108048002310) 2024 spills / hours 58 / 50 Long-term average 48.4 spills a year (monitored since 2020) High-spill reason (company) Not Applicable - Ongoing investigation Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 50 hours spilling →	Par River	57	50	down 2%	100%
Nancherrow Hill CSO Overflow on sewer network Company site name NANCHERROW HILL_CSO_ST JUST EA ID / permit SBB00826 · 301815 Outlet location SW36933191 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 43 / 84 Long-term average 33.8 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 50 hours spilling →	Local Stream (S)	30	50	down 30%	94%
Lympstone Outfall Pumping Station Overflow on sewer network Company site name LYMPSTONE OUTFALL SPS_PSCSOEO_LYMPSTONE EA ID / permit SBB00727 · 202165 Outlet location SX98748386 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Exe Estuary 2024 spills / hours 31 / 28 Long-term average 28.4 spills a year (monitored since 2016) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation Operational investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 49 hours spilling →	River Exe Estuary	36	49	up 16%	100%
Riddlecombe Waste Water Treatment Inlet overflow at sewage works Sewage works Riddlecombe Waste Water Treatment Company site name RIDDLECOMBE S T STW_SO_RIDDLECOMBE EA ID / permit SBB01025 · 200417 Outlet location SS60841380 (OS grid reference) · View on Apple Maps WFD catchment Mully Brook (GB108050014310) 2024 spills / hours 43 / 151 Long-term average 23.5 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 49 hours spilling →	Tributary of Mully Brook(S)	11	49	down 74%	100%
Portwrinkle Pscso/EO Storm discharge at pumping station Company site name PORTWRINKLE SPST_PSCSOEO_PORTWRINKLE EA ID / permit SBB00973 · 302116 Outlet location SX36205370 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Portwrinkle 2024 spills / hours 66 / 1,229 Long-term average 38.8 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 49 hours spilling →	Whitsand Bay (C)	17	49	down 74%	100%
Gratton STW_SO_YELVERTON Inlet overflow at sewage works Sewage works Gratton Yelverton EA ID / permit SBB01433 · Unpermitted Outlet location SX52346670 (OS grid reference) · View on Apple Maps WFD catchment Meavy (GB108047003660) 2024 spills / hours 84 / 245 Long-term average 49.5 spills a year (monitored since 2023) Monitor below 90% No longer operational as an overflow - permit revoked or to be revoked · Overflow no longer spilling to environment - from Jul Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 49 hours spilling →	River Meavy	15	49	down 82%	100%
Dulverton WwTW Storm tank at sewage works Sewage works Dulverton Company site name DULVERTON STW_SSO_DULVERTON EA ID / permit SBB00382 · 203027 Outlet location SS91582728 (OS grid reference) · View on Apple Maps WFD catchment Lower Barle (GB108045015100) 2024 spills / hours 31 / 207 Long-term average 84.6 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 48 hours spilling →	River Barle	14	48	down 55%	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.