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

050k100k150k200kJan 2025: 84,216 hours spillingJanFeb 2025: 45,207 hours spillingFebMar 2025: 9,740 hours spillingMarApr 2025: 21,006 hours spillingAprMay 2025: 2,363 hours spillingMayJun 2025: 8,257 hours spillingJunJul 2025: 1,289 hours spillingJulAug 2025: 2,570 hours spillingAugSep 2025: 11,756 hours spillingSepOct 2025: 9,772 hours spillingOctNov 2025: 60,065 hours spillingNovDec 2025: 150,480 hours spillingDec
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.

OverflowDischarges toSpills 2025Hours 2025Spills vs 2024Monitor uptime
North Fal STW (St Stephens Coombe)
Inlet overflow at sewage works
Sewage works
North Fal
Company site name
NORTH FAL STW_SO_ST STEVENS
EA ID / permit
SBB00838 · 302298
Outlet location
SW94125092 (OS grid reference) · View on Apple Maps
WFD catchment
Gwindra Stream (GB108048001350)
2024 spills / hours
12 / 36
Long-term average
12.0 spills a year (monitored since 2018)
High-spill reason (company)
Performance - SW Infiltration
Investigation
Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 293 hours spilling →
Gwindra Stream (S) 72 293 up 500% 100%
Relistian Pumping Station
Storm discharge at pumping station
Company site name
RELISTIAN SPS_PSCSOEO_RELISTIAN
EA ID / permit
SBB01021 · 301607
Outlet location
SW60393662 (OS grid reference) · View on Apple Maps
WFD catchment
Angarrack Stream (GB108049000520)
2024 spills / hours
73 / 252
Long-term average
54.3 spills a year (monitored since 2019)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 293 hours spilling →
Trib of Angarrack Strean 76 293 up 4% 100%
Siphon Telephone Box CSO
Overflow on sewer network
Company site name
WESTBRIDGE COTTS_CSO_TAVISTOCK
EA ID / permit
SBB01091 · 202240/CS/01
Outlet location
SX47697337 (OS grid reference) · View on Apple Maps
WFD catchment
Lower River Tavy (GB108047007840)
2024 spills / hours
58 / 106
Long-term average
62.7 spills a year (monitored since 2016)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Operational investigation completed
Improvement
Env Act (SODRP) improvement ongoing, UWWTR improvement ongoing
Volume & pollution
Estimate from 292 hours spilling →
River Tavy 64 292 up 10% 100%
Forde Road Pscso/EO
Storm discharge at pumping station
Company site name
FORDE ROAD SPS_PSCSOEO_NEWTON ABBOT
EA ID / permit
SBB00468 · 203336
Outlet location
SX87257170 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Teign Estuary
2024 spills / hours
32 / 227
Long-term average
22.7 spills a year (monitored since 2010)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 292 hours spilling →
River Teign via S/W Sewer(S) 31 292 down 3% 100%
Golant Pumping Station
Storm discharge at pumping station
Company site name
GOLANT SPST_PSCSOEO_GOLANT
EA ID / permit
SBB00494 · 303327
Outlet location
SX12405469 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Fowey
2024 spills / hours
109 / 63
Long-term average
114.7 spills a year (monitored since 2010)
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 289 hours spilling →
River Fowey Estuary (E) 93 289 down 15% 100%
Galmpton (Hope Cove) STW
Storm tank at sewage works
Sewage works
Galmpton
Company site name
GALMPTON HOPE COVE STW_SSO_SALCOMBE
EA ID / permit
SBB00484 · 202733
Outlet location
SX68294024 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Hope Cove
2024 spills / hours
72 / 1,582
Long-term average
20.1 spills a year (monitored since 2010)
Investigation
No investigation activity in reporting period
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 288 hours spilling →
Galmpton Stream(S) 16 288 down 78% 93%
Chillington & Frogmore STW
Storm tank at sewage works
Sewage works
Chillington And Frogmore
Company site name
CHILLINGTON STW_SSO_CHILLINGTON
EA ID / permit
SBB00244 · 203442
Outlet location
SX78364263 (OS grid reference) · View on Apple Maps
WFD catchment
Avon (DevonTidal) and Sth Hams - Frogmore (GB108046004760)
Shellfish water
Salcombe
2024 spills / hours
44 / 420
Long-term average
11.4 spills a year (monitored since 2015)
Investigation
UWWTR investigation completed
Improvement
Bathing Water and/or Shellfish Water improvement ongoing
Volume & pollution
Estimate from 284 hours spilling →
Chillington Stream(S) 28 284 down 36% 100%
Eastern Kings Pumping Station
Overflow on sewer network
Company site name
EASTERN KINGS SPS_PSCSOEO_PLYMOUTH
EA ID / permit
SBB00400 · 300738
Outlet location
SX46685348 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Plymouth Firestone Bay
2024 spills / hours
42 / 202
Long-term average
44.7 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 284 hours spilling →
Plymouth Sound (E) 47 284 up 12% 100%
Mill Road Pscso/EO
Storm discharge at pumping station
Company site name
PENPONDS SPS_PSCSOEO_CAMBORNE
EA ID / permit
SBB00779 · 301602
Outlet location
SW63043906 (OS grid reference) · View on Apple Maps
WFD catchment
Roseworthy Stream (GB108049000560)
2024 spills / hours
52 / 243
Long-term average
47.0 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 283 hours spilling →
Red River (S) 62 283 up 19% 100%
Sherford Wastewater Treatment Works
Inlet overflow at sewage works
Sewage works
Sherford
Company site name
SHERFORD STW_SO_SHERFORD
EA ID / permit
SBB01077 · NRA-SW-6171
Outlet location
SX77844429 (OS grid reference) · View on Apple Maps
WFD catchment
Avon (DevonTidal) and Sth Hams - Frogmore (GB108046004760)
Shellfish water
Salcombe
2024 spills / hours
96 / 1,195
Long-term average
168.7 spills a year (monitored since 2019)
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 283 hours spilling →
Sherford Stream 50 283 down 48% 100%
Musbury & Whitford STW
Inlet overflow at sewage works
Sewage works
Musbury And Whitford
Company site name
MUSBURY & WHITFORD STW_PSCSOEO_WHITFORD
EA ID / permit
SBB00820 · NRA-SW-6684
Outlet location
SY26249507 (OS grid reference) · View on Apple Maps
WFD catchment
Lower Axe (GB108045008870)
2024 spills / hours
68 / 329
Long-term average
71.0 spills a year (monitored since 2020)
High-spill reason (company)
Performance - SW Infiltration
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 281 hours spilling →
(S) River Axe 61 281 down 10% 100%
Pear Tree Cross CSO
Overflow on sewer network
Company site name
PEAR TREE CROSS_CSO_ASHBURTON
EA ID / permit
SBB00917 · 201952
Outlet location
SX75086928 (OS grid reference) · View on Apple Maps
WFD catchment
Ashburn (GB108046005270)
2024 spills / hours
64 / 189
Long-term average
49.5 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 281 hours spilling →
River Ashburton (S) 57 281 down 11% 100%
Health Centre Car Park Pseo/CSO
Storm discharge at pumping station
Company site name
BONE MILL SPS_PSCSOEO_LOOE
EA ID / permit
SBB00554 · 300975
Outlet location
SX25435366 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
East Looe
2024 spills / hours
75 / 247
Long-term average
102.2 spills a year (monitored since 2010)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 279 hours spilling →
Looe River (Harbour) (E) 67 279 down 11% 100%
Lake Lane CSO
Overflow on sewer network
Company site name
LAKE LN_CSO_DOUSLAND
EA ID / permit
SBB00656 · 301840
Outlet location
SX53136804 (OS grid reference) · View on Apple Maps
WFD catchment
Meavy (GB108047003660)
2024 spills / hours
28 / 126
Long-term average
28.8 spills a year (monitored since 2022)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 276 hours spilling →
River Meavy (S) 46 276 up 64% 98%
St Just (Tregeseal 1)
Inlet overflow at sewage works
Sewage works
St Just
Company site name
TREGESEAL STW_SO_ST JUST
EA ID / permit
SBB01139 · 302141
Outlet location
SW36753195 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
41 / 205
Long-term average
42.5 spills a year (monitored since 2022)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 274 hours spilling →
Tregaseal Stream (S) 18 274 down 56% 100%
Yarnscombe Sewage Treatment Works
Storm tank at sewage works
Sewage works
Yarnscombe
Company site name
YARNSCOMBE STW_SSO_YARNSCOMBE
EA ID / permit
SBB01383 · 200402
Outlet location
SS55782367 (OS grid reference) · View on Apple Maps
WFD catchment
Langham Lake (GB108050014460)
2024 spills / hours
3 / 4.6
Long-term average
24.0 spills a year (monitored since 2022)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 274 hours spilling →
Tributary of Langham Lake(S) 29 274 up 867% 100%
Dobwalls SPS
Storm discharge at pumping station
Company site name
DOBWALLS SPS_PSCSOEO_DOBWALLS
EA ID / permit
SBB00368 · NRA-SW-3206
Outlet location
SX21346387 (OS grid reference) · View on Apple Maps
WFD catchment
West Looe River (GB108048002000)
2024 spills / hours
21 / 180
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 272 hours spilling →
Unnamed Trib to West Looe Rivr 27 272 up 29% 100%
West Bridge CSO
Overflow on sewer network
Company site name
CLINIC_CSO_TAVISTOCK
EA ID / permit
SBB01335 · 300078/CS/01
Outlet location
SX47657373 (OS grid reference) · View on Apple Maps
WFD catchment
Lower River Tavy (GB108047007840)
2024 spills / hours
81 / 207
Long-term average
73.5 spills a year (monitored since 2017)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 272 hours spilling →
River Tavy 79 272 down 2% 100%
Plymouth Road CSO
Overflow on sewer network
Company site name
PLYMOUTH RD OPP DINGLE RD_CSO_PLYMPTON
EA ID / permit
SBB00946 · 301763
Outlet location
SX53265645 (OS grid reference) · View on Apple Maps
WFD catchment
Tory Brook (GB108047003640)
Bathing water
Plymouth Hoe East
2024 spills / hours
84 / 108
Long-term average
78.8 spills a year (monitored since 2016)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 272 hours spilling →
Tory Brook 88 272 up 5% 100%
Torrington WwTW
Storm tank at sewage works
Sewage works
Torrington
Company site name
TORRINGTON STW_SSO_TORRINGTON
EA ID / permit
SBB01263 · 203792
Outlet location
SS48181922 (OS grid reference) · View on Apple Maps
WFD catchment
Torridge (Lew to Estuary) (GB108050014660)
Shellfish water
Taw-Torridge Estuary
2024 spills / hours
39 / 489
Long-term average
41.8 spills a year (monitored since 2016)
High-spill reason (company)
Performance - SW Infiltration
Investigation
UWWTR investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 271 hours spilling →
River Torridge 31 271 down 21% 100%
Dartington C CSO
Overflow on sewer network
Company site name
DARTINGTON C_CSO_DARTINGTON
EA ID / permit
SBB00350 · 202968
Outlet location
SX79196193 (OS grid reference) · View on Apple Maps
WFD catchment
Bidwell Brook (GB108046005160)
Bathing water
Steamer Quay, Dart Estuary
Shellfish water
Dart
2024 spills / hours
39 / 321
Long-term average
42.7 spills a year (monitored since 2019)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation completed
Improvement
Env Act (SODRP) improvement ongoing, Bathing Water and/or Shellfish Water improvement ongoing
Volume & pollution
Estimate from 271 hours spilling →
Bidwell Brook 33 271 down 15% 99%
Drimpton Pumping Station
Storm discharge at pumping station
Company site name
DRIMPTON SPST_PSCSOEO_DRIMPTON
EA ID / permit
SBB00377 · 201669
Outlet location
ST41640516 (OS grid reference) · View on Apple Maps
WFD catchment
Upper Axe (GB108045014840)
2024 spills / hours
40 / 415
Long-term average
25.8 spills a year (monitored since 2017)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 270 hours spilling →
Temple Brook 27 270 down 33% 100%
Clyst Honiton Pumping Station
Overflow on sewer network
Company site name
CLYST HONITON SPS_PSCSO_EXETER
EA ID / permit
SBB00279 · 201611
Outlet location
SX98659369 (OS grid reference) · View on Apple Maps
WFD catchment
Upper Clyst (GB108045008860)
Shellfish water
Exe Estuary
2024 spills / hours
34 / 355
Long-term average
18.1 spills a year (monitored since 2016)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 269 hours spilling →
River Clyst 23 269 down 32% 100%
Bere Ferrers Pumping Station
Storm discharge at pumping station
Company site name
BERE FERRERS SPST_PSCSOEO_BERE FERRERS
EA ID / permit
SBB00100 · NRA-SW-3786
Outlet location
SX46116332 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
77 / 274
Long-term average
80.7 spills a year (monitored since 2018)
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 269 hours spilling →
River Tavy (Estuarine) 66 269 down 14% 100%
South Milton STW
Storm tank at sewage works
Sewage works
South Milton
Company site name
SOUTH MILTON STW_SSO_SOUTH MILTON
EA ID / permit
SBB01099 · NRA-SW-3548
Outlet location
SX68684232 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment (GB620806110003)
Bathing water
Thurlestone South
2024 spills / hours
50 / 820
Long-term average
58.5 spills a year (monitored since 2010)
High-spill reason (company)
Performance - SW Infiltration
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 269 hours spilling →
South Milton Stream 37 269 down 26% 98%
Laira Park CSO
Overflow on sewer network
Company site name
FIELD O/S 32 LAIRA PARK GDN_CSO_PLYMOUTH
EA ID / permit
SBB00655 · 301776
Outlet location
SX50415531 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Plymouth Hoe East
2024 spills / hours
103 / 424
Long-term average
86.3 spills a year (monitored since 2018)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 268 hours spilling →
River Plym via SWS (Estuarine) 87 268 down 16% 100%
Landkey Pumping Station
Storm discharge at pumping station
Company site name
LANDKEY SPS_PSCSOEO_LANDKEY
EA ID / permit
SBB00659 · 200195/PC/01
Outlet location
SS59093103 (OS grid reference) · View on Apple Maps
WFD catchment
Venn (GB108050014620)
Shellfish water
Taw-Torridge Estuary
2024 spills / hours
67 / 485
Long-term average
39.8 spills a year (monitored since 2016)
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 266 hours spilling →
River Venn 46 266 down 31% 100%
West Croft Road
Overflow on sewer network
Company site name
WESTCROFT_CSO_HOLSWORTHY
EA ID / permit
SBB01340 · SWWA 2228
Outlet location
SS33880367 (OS grid reference) · View on Apple Maps
WFD catchment
Deer (GB108047013880)
2024 spills / hours
82 / 396
Long-term average
59.0 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 257 hours spilling →
River Deer 72 257 down 12% 100%
Cambridge Lane Combined Sewer of
Overflow on sewer network
Company site name
CAMBRIDGE LANE_CSO_PLYMOUTH
EA ID / permit
SBB00203 · 301740
Outlet location
SX46975400 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Plymouth Hoe West
2024 spills / hours
91 / 465
Long-term average
73.4 spills a year (monitored since 2016)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 252 hours spilling →
Plymouth Sound via SWS (Estu.) 76 252 down 16% 100%
Textile Mill
Overflow on sewer network
Company site name
TEXTILE MILL_CSO_DARTINGTON
EA ID / permit
SBB01219 · 202967
Outlet location
SX79086202 (OS grid reference) · View on Apple Maps
WFD catchment
Bidwell Brook (GB108046005160)
Bathing water
Steamer Quay, Dart Estuary
Shellfish water
Dart
2024 spills / hours
77 / 573
Long-term average
36.6 spills a year (monitored since 2017)
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 252 hours spilling →
Bidwell Brook 52 252 down 32% 97%
Chilsworthy WwTW
Inlet overflow at sewage works
Sewage works
Chilsworthy
Company site name
CHILSWORTHY STW_SO_GUNNISLAKE
EA ID / permit
SBB00247 · SWWA 569
Outlet location
SX41757260 (OS grid reference) · View on Apple Maps
WFD catchment
Lower River Tamar (GB108047007860)
2024 spills / hours
174 / 1,157
Long-term average
184.2 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 251 hours spilling →
River Tamar 41 251 down 76% 96%
Morebath STW
Inlet overflow at sewage works
Sewage works
Morebath
Company site name
MOREBATH STW_SO_BAMPTON
EA ID / permit
SBB00803 · 202202/CS/01
Outlet location
SS95352477 (OS grid reference) · View on Apple Maps
WFD catchment
Lower Batherm (GB108045015070)
2024 spills / hours
98 / 294
Long-term average
86.0 spills a year (monitored since 2022)
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 249 hours spilling →
Shuttern Brook (S) 91 249 down 7% 100%
Cornwood Pumping Station
Storm discharge at pumping station
Company site name
CORNWOOD SPST_PSCSOEO_LUTTON
EA ID / permit
SBB00308 · 300617
Outlet location
SX60805940 (OS grid reference) · View on Apple Maps
WFD catchment
Upper River Yealm (GB108047004050)
2024 spills / hours
39 / 245
Long-term average
26.3 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 248 hours spilling →
River Yealm (S) 34 248 down 13% 100%
Kinterbury Creek Pumping Station
Storm discharge at pumping station
Company site name
KINTERBURY CREEK_PSCSOEO_PLYMOUTH
EA ID / permit
SBB00647 · 301593
Outlet location
SX43565815 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
28 / 281
Long-term average
16.6 spills a year (monitored since 2016)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 247 hours spilling →
River Tamar Viasws (Estuarine) 20 247 down 29% 100%
Hellarcher Pumping Station
Storm discharge at pumping station
Company site name
HELLARCHER SPS_PSCSOEO_THE LIZARD
EA ID / permit
SBB00561 · 301599
Outlet location
SW69441244 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
36 / 61
Long-term average
61.0 spills a year (monitored since 2018)
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 245 hours spilling →
English Channel (Coastal) 74 245 up 106% 100%
Totnes Town Pumping Station
Storm discharge at pumping station
Company site name
TOTNES TOWN SPST_PSCSOEO_TOTNES
EA ID / permit
SBB01265 · 201662
Outlet location
SX80676056 (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
105 / 219
Long-term average
92.1 spills a year (monitored since 2010)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 245 hours spilling →
River Dart (Estuarine) 90 245 down 14% 100%
Cofton Pscso/EO
Storm discharge at pumping station
Company site name
COFTON SPS_PSCSOEO_DAWLISH
EA ID / permit
SBB00285 · 202627
Outlet location
SX97128061 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Exe Estuary
2024 spills / hours
11 / 49
Long-term average
21.4 spills a year (monitored since 2016)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 244 hours spilling →
Cofton Stream(S) 28 244 up 155% 100%
Reskadinnick Pumping Station
Storm discharge at pumping station
Company site name
RESKADINNICK SPST_PSCSOEO_CAMBORNE
EA ID / permit
SBB01023 · 301916
Outlet location
SW63414203 (OS grid reference) · View on Apple Maps
WFD catchment
Red River (Upper) (GB108049000600)
Bathing water
Gwithian Towans; Godrevy Towans
2024 spills / hours
48 / 350
Long-term average
35.1 spills a year (monitored since 2010)
High-spill reason (company)
Performance - SW Infiltration
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 244 hours spilling →
Red River (S) 42 244 down 13% 100%
Madeira Drive Pscso/EO
Storm discharge at pumping station
Company site name
MADEIRA DRIVE SPS_PSCSOEO_BUDE
EA ID / permit
SBB00735 · 301648
Outlet location
SS20080252 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Widemouth Sand
2024 spills / hours
52 / 369
Long-term average
52.1 spills a year (monitored since 2010)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Operational investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 244 hours spilling →
Widemouth Bay (C) 41 244 down 21% 100%
Ipplepen Wastewater Treatment Works
Inlet overflow at sewage works
Sewage works
Ipplepen
Company site name
IPPLEPEN STW_SO_IPPLEPEN
EA ID / permit
SBB00614 · 203406
Outlet location
SX82816676 (OS grid reference) · View on Apple Maps
WFD catchment
Am Brook (GB108046005210)
2024 spills / hours
81 / 363
Long-term average
66.2 spills a year (monitored since 2019)
High-spill reason (company)
Performance - SW Infiltration
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 239 hours spilling →
Halwell Stream 55 239 down 32% 95%
Awliscombe Pumping Station
Storm discharge at pumping station
Company site name
AWLISCOMBE SPST_PSCSOEO_AWLISCOMBE
EA ID / permit
SBB00058 · 201638
Outlet location
ST13640112 (OS grid reference) · View on Apple Maps
WFD catchment
Wolf (Otter) (GB108045009190)
2024 spills / hours
37 / 302
Long-term average
29.4 spills a year (monitored since 2017)
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 239 hours spilling →
Trib of River Wolf 32 239 down 14% 100%
Egloskerry Pumping Station
Storm discharge at pumping station
Company site name
EGLOSKERRY SPS_PSCSOEO_LAUNCESTON
EA ID / permit
SBB00408 · 302100
Outlet location
SX27758650 (OS grid reference) · View on Apple Maps
WFD catchment
Lower River Ottery (GB108047007981)
2024 spills / hours
15 / 96
Long-term average
21.0 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 237 hours spilling →
Tributary of the River Ottery 22 237 up 47% 100%
Exeter (Countess Wear) STW
Storm tank at sewage works (with treatment)
Sewage works
Exeter
Company site name
COUNTESS WEAR STW_SSO_EXETER
EA ID / permit
SBB00426 · 202475
Outlet location
SX94978905 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Exe Estuary
Treatment
UV (Ultraviolet)
2024 spills / hours
103 / 321
Long-term average
51.7 spills a year
High-spill reason (company)
Performance - SW Infiltration
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 234 hours spilling →
River Exe Estuary(E) 42 234 down 59% 100%
Dulverton WwTW
Inlet overflow at sewage works
Sewage works
Dulverton
Company site name
DULVERTON STW_SO_DULVERTON
EA ID / permit
SBB00381 · 203027
Outlet location
SS91582728 (OS grid reference) · View on Apple Maps
WFD catchment
Lower Barle (GB108045015100)
2024 spills / hours
136 / 446
Long-term average
144.0 spills a year (monitored since 2018)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 233 hours spilling →
River Barle 102 233 down 25% 100%
Denbury Wastewater Treatment Works
Inlet overflow at sewage works
Sewage works
Denbury
Company site name
DENBURY STW_SO_DENBURY
EA ID / permit
SBB00358 · NRA-SW-7808
Outlet location
SX82626801 (OS grid reference) · View on Apple Maps
WFD catchment
Am Brook (GB108046005210)
2024 spills / hours
48 / 129
Long-term average
60.2 spills a year (monitored since 2020)
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 232 hours spilling →
Halwell Stream 50 232 up 4% 100%
Gunnislake No.2 CSO
Overflow on sewer network
Company site name
GUNNISLAKE NO. 2_CSO_GUNNISLAKE
EA ID / permit
SBB00521 · 301845
Outlet location
SX43357185 (OS grid reference) · View on Apple Maps
WFD catchment
Lower River Tamar (GB108047007860)
2024 spills / hours
70 / 82
Long-term average
82.6 spills a year (monitored since 2020)
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 231 hours spilling →
River Tamar via SWS 82 231 up 17% 98%
Chudleigh Knighton WwTW
Inlet overflow at sewage works
Sewage works
Chudleigh Knighton
Company site name
CHUDLEIGH KNIGHTON STW_SO_CHUDLEIGH K
EA ID / permit
SBB00252 · 203388
Outlet location
SX84657716 (OS grid reference) · View on Apple Maps
WFD catchment
Teign (Lower) (GB108046008540)
Shellfish water
Teign Estuary
2024 spills / hours
78 / 410
Long-term average
61.8 spills a year (monitored since 2017)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
Operational improvement ongoing
Volume & pollution
Estimate from 230 hours spilling →
River Teign 59 230 down 24% 100%
Holcombe Rogus WwTW
Inlet overflow at sewage works
Sewage works
Holcombe Rogus
Company site name
HOLCOMBE ROGUS STW_SO_HOLCOMBE ROGUS
EA ID / permit
SBB00578 · SWWA 2475
Outlet location
ST05801824 (OS grid reference) · View on Apple Maps
WFD catchment
Spratford Stream (GB108045015020)
2024 spills / hours
90 / 549
Long-term average
84.3 spills a year (monitored since 2019)
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 230 hours spilling →
Trib of River Lyner 67 230 down 26% 100%
Muddlebridge CSO
Overflow on sewer network
Company site name
MUDDLEBRIDGE_CSO_FREMINGTON
EA ID / permit
SBB00818 · 203288
Outlet location
SS52253249 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Taw-Torridge Estuary
2024 spills / hours
35 / 448
Long-term average
26.9 spills a year
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 229 hours spilling →
Bryn Brook(S) 21 229 down 40% 100%
Townstal Tank CSO
Overflow on sewer network
Company site name
TOWNSTAL TANK_CSO_DARTMOUTH
EA ID / permit
SBB01269 · 202395
Outlet location
SX86545177 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Dart
2024 spills / hours
36 / 249
Long-term average
25.0 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 229 hours spilling →
Trib of Old Mill Creek via SWS 25 229 down 31% 95%

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.