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
Dunkeswell WwTW
Inlet overflow at sewage works
Sewage works
Dunkeswell
Company site name
DUNKESWELL STW_SO_DUNKESWELL
EA ID / permit
SBB00384 · 203109
Outlet location
ST15190858 (OS grid reference) · View on Apple Maps
WFD catchment
Madford River (GB108045014920)
2024 spills / hours
53 / 303
Long-term average
37.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 121 hours spilling →
River Madford 21 121 down 60% 98%
Towan Head Pumping Station
Storm discharge at pumping station
Company site name
TOWAN HEAD SPS_PSCSOEO_NEWQUAY
EA ID / permit
SBB01266 · 301322
Outlet location
SW80086297 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Fistral North; Fistral South
2024 spills / hours
32 / 116
Long-term average
27.2 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 120 hours spilling →
Atlantic Ocean(T) 33 120 up 3% 100%
Lower Boscaswell CSO
Overflow on sewer network
Company site name
LOWER BOSCASWELL_CSO_ST JUST
EA ID / permit
SBB00709 · 303094
Outlet location
SW37173490 (OS grid reference) · View on Apple Maps
WFD catchment
Lands End to Trevose Head (GB610807680001)
2024 spills / hours
72 / 104
Long-term average
50.0 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 119 hours spilling →
Atantic Ocean(C) 72 119 no change 100%
Elburton South PS
Storm discharge at pumping station
Company site name
ELBURTON SOUTH SPS_PSCSOEO_PLYMOUTH
EA ID / permit
SBB00410 · 303467
Outlet location
SX53775302 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Yealm
2024 spills / hours
0 / 0.0
Long-term average
13.7 spills a year (monitored since 2010)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 119 hours spilling →
Trib of River Yealm Est (S) 46 119 up from 0 100%
Chapel Amble WwTW
Inlet overflow at sewage works
Sewage works
Chapel Amble
Company site name
CHAPEL AMBLE S T SEPTNK_SO_CHAPEL AMBLE
EA ID / permit
SBB00229 · EPRCP3528XH
Outlet location
SW99797526 (OS grid reference) · View on Apple Maps
WFD catchment
Amble (GB108049006910)
2024 spills / hours
28 / 116
Long-term average
24.9 spills a year (monitored since 2017)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 118 hours spilling →
River Amble 20 118 down 29% 100%
Holbeton Sewage Treatment Works
Inlet overflow at sewage works
Sewage works
Holbeton
Company site name
HOLBETON STW_SO_HOLBETON
EA ID / permit
SBB00575 · 202413
Outlet location
SX62005021 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Mothecombe; Coastguards Beach, Erme Estuary
2024 spills / hours
76 / 200
Long-term average
59.0 spills a year (monitored since 2014)
High-spill reason (company)
Performance - SW Infiltration
Investigation
Operational investigation completed
Improvement
Bathing Water and/or Shellfish Water improvement ongoing
Volume & pollution
Estimate from 117 hours spilling →
River Erme(E) 55 117 down 28% 100%
Gorran Churchtown Pumping Station
Storm discharge at pumping station
Company site name
GORRAN CHURCHTOWN SPST_PSCSOEO_GORRAN
EA ID / permit
SBB00502 · 303580
Outlet location
SX00124245 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Gorran Haven Little Perhaver
2024 spills / hours
0 / 0.0
Long-term average
22.0 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 117 hours spilling →
Portmellon Stream(S) 30 117 up from 0 100%
Mayors Avenue Pumping Station
Storm discharge at pumping station
Company site name
MAYORS AVENUE SPST_PSCSO_DARTMOUTH
EA ID / permit
SBB00755 · 202401
Outlet location
SX88015152 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Dartmouth Castle and Sugary Cove; Warfleet Creek, Dart Estuary
2024 spills / hours
74 / 158
Long-term average
63.4 spills a year (monitored since 2010)
High-spill reason (company)
Performance - SW Infiltration
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 117 hours spilling →
Dart River Estuary(E) 46 117 down 38% 100%
Town Park Pumping Station
Storm discharge at pumping station
Company site name
TOWN PARK SPS_PSCSOEO_TORRINGTON
EA ID / permit
SBB01267 · 200083
Outlet location
SS49091959 (OS grid reference) · View on Apple Maps
WFD catchment
Torridge (Lew to Estuary) (GB108050014660)
Shellfish water
Taw-Torridge Estuary
2024 spills / hours
88 / 140
Long-term average
76.7 spills a year (monitored since 2016)
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 117 hours spilling →
Trib. of Common Lake Stream 77 117 down 13% 100%
Hannafore Pumping Station
Storm discharge at pumping station
Company site name
HANNAFORE SPS_PSCSOEO_LOOE
EA ID / permit
SBB00534 · 300970
Outlet location
SX25545212 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
East Looe
2024 spills / hours
59 / 136
Long-term average
68.0 spills a year (monitored since 2018)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
Env Act (SODRP) improvement ongoing, Operational improvement ongoing
Volume & pollution
Estimate from 116 hours spilling →
Looe Bay 61 116 up 3% 100%
Bishop Mead Combined Sewer Overflow
Overflow on sewer network
Company site name
BISHOPS MEAD_CSO_TAVISTOCK
EA ID / permit
SBB00108 · 301883
Outlet location
SX48277289 (OS grid reference) · View on Apple Maps
WFD catchment
Lower River Tavy (GB108047007840)
2024 spills / hours
26 / 29
Long-term average
22.9 spills a year (monitored since 2016)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 115 hours spilling →
Tiddy Brook 29 115 up 12% 100%
Uplowman STW
Inlet overflow at sewage works
Sewage works
Uplowman
Company site name
UPLOWMAN STW_SO_TIVERTON
EA ID / permit
SBB01296 · 203806
Outlet location
ST01321527 (OS grid reference) · View on Apple Maps
WFD catchment
Lowman (GB108045015030)
2024 spills / hours
28 / 311
Long-term average
31.6 spills a year (monitored since 2018)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 115 hours spilling →
Uplowman Stream 11 115 down 61% 99%
Ham Lane CSO
Overflow on sewer network
Company site name
HAM LN_CSO_WOODBURY
EA ID / permit
SBB00531 · 201815
Outlet location
SY00748693 (OS grid reference) · View on Apple Maps
WFD catchment
Polly Brook (GB108045008980)
Shellfish water
Exe Estuary
2024 spills / hours
58 / 138
Long-term average
54.8 spills a year (monitored since 2017)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 114 hours spilling →
Woodbury Brook 52 114 down 10% 98%
Fremington Pill Pumping Station
Overflow on sewer network
Company site name
FREMINGTON BRIDGE SPS_PSCSOEO_FREMINGTON
EA ID / permit
SBB00479 · 203287
Outlet location
SS51363252 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Taw-Torridge Estuary
2024 spills / hours
27 / 296
Long-term average
22.2 spills a year
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 114 hours spilling →
Bickleton Stream(S) 14 114 down 48% 100%
Parkham STW
Storm tank at sewage works
Sewage works
Parkham
Company site name
PARKHAM STW_SSO_PARKHAM
EA ID / permit
SBB00908 · NRA-SW-6627
Outlet location
SS39402146 (OS grid reference) · View on Apple Maps
WFD catchment
Upper River Yeo (Bideford) (GB108050014470)
2024 spills / hours
47 / 279
Long-term average
43.4 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 114 hours spilling →
(S) River Yeo 26 114 down 45% 100%
Lime Kiln Tank CSO
Overflow on sewer network
Company site name
LIME KILN PS_CSO_BUDLEIGH SALTERTON
EA ID / permit
SBB00690 · 200111/CS/01
Outlet location
SY07948192 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Budleigh Salterton
2024 spills / hours
212 / 212
Long-term average
64.8 spills a year
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Operational investigation completed
Improvement
Env Act (SODRP) improvement ongoing, Operational improvement ongoing
Volume & pollution
Estimate from 114 hours spilling →
English Channel 83 114 down 61% 100%
Wembury Beach Pscso/EO
Storm discharge at pumping station
Company site name
WEMBURY BEACH SPST_PSCSOEO_WEMBURY
EA ID / permit
SBB01329 · 301660
Outlet location
SX51744852 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Wembury
2024 spills / hours
29 / 262
Long-term average
11.1 spills a year (monitored since 2010)
Investigation
UWWTR investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 113 hours spilling →
Wembury Bay (C) 13 113 down 55% 99%
Molinnis Combined Sewer Overflow
Overflow on sewer network
Company site name
MOLINNIS_CSO_BUGLE
EA ID / permit
SBB00794 · 301683
Outlet location
SX02645936 (OS grid reference) · View on Apple Maps
WFD catchment
Par River (Upper) (GB108048002310)
2024 spills / hours
45 / 95
Long-term average
34.0 spills a year (monitored since 2019)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 112 hours spilling →
Tributary of River Par 48 112 up 7% 100%
Dunsford Road CSO
Overflow on sewer network
Company site name
DUNSFORD RD_CSO_EXETER
EA ID / permit
SBB00387 · 201932
Outlet location
SX92999067 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Exe Estuary
2024 spills / hours
42 / 100
Long-term average
45.1 spills a year (monitored since 2017)
High-spill reason (company)
Performance - SW Infiltration
Investigation
UWWTR investigation ongoing, Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 112 hours spilling →
River Exe via SWS 47 112 up 12% 100%
Tipton St John Pumping Station
Overflow on sewer network
Company site name
TIPTON ST JOHN SPST_PSCSOEO_SIDMOUTH
EA ID / permit
SBB01246 · 201651
Outlet location
SY08999174 (OS grid reference) · View on Apple Maps
WFD catchment
Lower River Otter (GB108045009170)
2024 spills / hours
30 / 83
Long-term average
17.0 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
Volume & pollution
Estimate from 111 hours spilling →
River Otter 36 111 up 20% 100%
Malborough Ejector PS
Storm discharge at pumping station
Company site name
PINHEY EJECTOR SPS_PSCSOEO_MALBOROUGH
EA ID / permit
SBB00740 · 203408
Outlet location
SX71094011 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Salcombe
2024 spills / hours
45 / 281
Long-term average
30.8 spills a year
Investigation
Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 108 hours spilling →
Trib of Blanksmill Creek (S) 28 108 down 38% 100%
O/S 4 Keyberry Road CSO
Overflow on sewer network
Company site name
KEYBERRY RD NO 4_CSO_NEWTON ABBOT
EA ID / permit
SBB00860 · 203100
Outlet location
SX87037069 (OS grid reference) · View on Apple Maps
WFD catchment
Aller Brook (Teign) - Lower (GB108046005350)
Shellfish water
Teign Estuary
2024 spills / hours
51 / 269
Long-term average
28.9 spills a year (monitored since 2015)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 108 hours spilling →
Surface Water Sewer(S) 23 108 down 55% 91%
Combeinteignhead Pumping Station
Storm discharge at pumping station
Company site name
COOMBETEIGNHEAD SPS_PSCSOEO_COOMBETEIGN
EA ID / permit
SBB00295 · 002659/PC/01
Outlet location
SX90137176 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
22 / 91
Long-term average
14.9 spills a year (monitored since 2016)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 107 hours spilling →
Combe Stream 17 107 down 23% 100%
Pennsylvania Road CSO
Overflow on sewer network
Company site name
PENNSYLVANIA ROAD_CSO_EXETER
EA ID / permit
SBB00922 · 201372
Outlet location
SX91479250 (OS grid reference) · View on Apple Maps
WFD catchment
Exe (Creedy to Estuary) (GB108045009040)
Shellfish water
Exe Estuary
2024 spills / hours
51 / 158
Long-term average
39.7 spills a year (monitored since 2017)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 107 hours spilling →
Higher Least via Sw Sewer 39 107 down 24% 100%
Factory Houses Pumping Station
Storm discharge at pumping station
Company site name
MENHENIOT SPST_PSCSOEO_MENHENIOT
EA ID / permit
SBB00436 · 301539
Outlet location
SX28436203 (OS grid reference) · View on Apple Maps
WFD catchment
Seaton (GB108048002320)
Bathing water
Seaton (Cornwall)
2024 spills / hours
9 / 22
Long-term average
4.9 spills a year (monitored since 2014)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 107 hours spilling →
Tributary of the River Seaton 12 107 up 33% 100%
Wadebridge PS
Storm discharge at pumping station
Company site name
WADEBRIDGE SPST_PSCSOEO_WADEBRIDGE
EA ID / permit
SBB01312 · 302977
Outlet location
SW98857272 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Camel Estuary
2024 spills / hours
22 / 74
Long-term average
23.9 spills a year (monitored since 2017)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 107 hours spilling →
Camel Estuary(E) 18 107 down 18% 100%
Caffa Mill Pumping Station
Storm discharge at pumping station
Company site name
CAFFA MILL SPS_PSCSOEO_FOWEY
EA ID / permit
SBB00199 · 302774
Outlet location
SX12765216 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Readymoney Cove
Shellfish water
Fowey
2024 spills / hours
62 / 195
Long-term average
117.2 spills a year (monitored since 2015)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Operational investigation completed
Improvement
Env Act (SODRP) improvement ongoing, Operational improvement ongoing
Volume & pollution
Estimate from 107 hours spilling →
River Fowey Estuary(E) 38 107 down 39% 100%
Homers Lane CSO
Overflow on sewer network
Company site name
HOMERS LN_CSO_KINGSTEIGNTON
EA ID / permit
SBB00587 · 201765
Outlet location
SX86777285 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
31 / 159
Long-term average
97.4 spills a year (monitored since 2017)
Investigation
UWWTR investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 107 hours spilling →
Trib O Riv.Teign via Sw Sewer 21 107 down 32% 100%
Axmouth Pscso/EO
Storm discharge at pumping station
Company site name
AXMOUTH SPST_PSCSOEO_AXMOUTH
EA ID / permit
SBB00059 · 201605
Outlet location
SY25539107 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Seaton (Devon)
2024 spills / hours
4 / 1.0
Long-term average
16.1 spills a year (monitored since 2010)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 106 hours spilling →
River Axe (S) 36 106 up 800% 100%
St Marychurch Road CSO
Overflow on sewer network
Company site name
ST MARYCHURCH RD_CSO_NEWTON ABBOT
EA ID / permit
SBB01149 · 203342
Outlet location
SX87117081 (OS grid reference) · View on Apple Maps
WFD catchment
Aller Brook (Teign) - Lower (GB108046005350)
Shellfish water
Teign Estuary
2024 spills / hours
49 / 352
Long-term average
26.5 spills a year
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 104 hours spilling →
Aller Brook(S) 32 104 down 35% 100%
St Teath Wastewater Treatment Works
Inlet overflow at sewage works
Sewage works
St Teath
Company site name
ST TEATH STW_SO_ST TEATH
EA ID / permit
SBB01158 · 302142
Outlet location
SX05928059 (OS grid reference) · View on Apple Maps
WFD catchment
Allen (GB108049007050)
2024 spills / hours
119 / 103
Long-term average
114.3 spills a year (monitored since 2017)
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 101 hours spilling →
Trib of River Allen 101 101 down 15% 98%
North Hill WwTW
Inlet overflow at sewage works
Sewage works
North Hill
Company site name
NORTH HILL STW_SO_NORTH HILL
EA ID / permit
SBB00840 · NRA-SW-6621
Outlet location
SX27037631 (OS grid reference) · View on Apple Maps
WFD catchment
Lower River Lynher (GB108047007670)
2024 spills / hours
85 / 340
Long-term average
108.9 spills a year (monitored since 2018)
Investigation
Operational investigation completed
Improvement
Env Act (SODRP) improvement ongoing, UWWTR improvement ongoing
Volume & pollution
Estimate from 99 hours spilling →
River Lynher 19 99 down 78% 98%
Coverack Mill PS
Storm discharge at pumping station
Company site name
COVERACK MILL SPST_PSCSOEO_THE LIZARD
EA ID / permit
SBB00317 · 301388
Outlet location
SW78231839 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Coverack
2024 spills / hours
25 / 96
Long-term average
26.6 spills a year (monitored since 2010)
Investigation
No investigation activity in reporting period
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 99 hours spilling →
Coverack Cove(C) 24 99 down 4% 99%
Ottery St Mary Attenuation Tank
Overflow on sewer network
Company site name
OTTERY ST MARY ATTEN TANK_SO_OTTERY
EA ID / permit
SBB00890 · DRA 96
Outlet location
SY09479510 (OS grid reference) · View on Apple Maps
WFD catchment
Lower River Otter (GB108045009170)
2024 spills / hours
13 / 67
Long-term average
13.0 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 99 hours spilling →
The River Otter 30 99 up 131% 100%
Padstow Foreshore Pumping Station
Storm discharge at pumping station
Company site name
PADSTOW FORESHORE SPST_PSCSOEO_PADSTOW
EA ID / permit
SBB00898 · 302974
Outlet location
SW92247492 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Camel Estuary
2024 spills / hours
33 / 156
Long-term average
24.2 spills a year (monitored since 2010)
Investigation
No investigation activity in reporting period
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 99 hours spilling →
River Camel Estuary (E) 26 99 down 21% 100%
Old Mill PS
Storm discharge at pumping station
Company site name
OLD MILL SPST_PSCSOEO_STOKE CLIMSLAND
EA ID / permit
SBB00880 · 302112
Outlet location
SX36987385 (OS grid reference) · View on Apple Maps
WFD catchment
Lower River Tamar (GB108047007860)
2024 spills / hours
7 / 5.7
Long-term average
11.7 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 98 hours spilling →
Alren Stream 25 98 up 257% 91%
Tamerton Foliot Pumping Station
Storm discharge at pumping station
Company site name
STATION ROAD SPS_PSCSOEO_PLYMOUTH
EA ID / permit
SBB01206 · 302657
Outlet location
SX46676089 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
5 / 3.7
Long-term average
9.3 spills a year
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 98 hours spilling →
Tamerton Lake(E) 25 98 up 400% 95%
Finns CSO
Overflow on sewer network
Company site name
FINNS_CSO_PENZANCE
EA ID / permit
SBB00450 · 301818
Outlet location
SW48103117 (OS grid reference) · View on Apple Maps
WFD catchment
Trevaylor Stream (GB108048002100)
Bathing water
Long Rock
2024 spills / hours
66 / 127
Long-term average
52.4 spills a year (monitored since 2010)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Operational investigation completed
Improvement
Bathing Water and/or Shellfish Water improvement ongoing
Volume & pollution
Estimate from 97 hours spilling →
Local Stream (S) 52 97 down 21% 100%
Pixon Lane Combined Sewer Overflow
Overflow on sewer network
Company site name
PIXON LN_CSO_TAVISTOCK
EA ID / permit
SBB00940 · 300525/CS/01
Outlet location
SX47917400 (OS grid reference) · View on Apple Maps
WFD catchment
Lower River Tavy (GB108047007840)
2024 spills / hours
59 / 42
Long-term average
96.0 spills a year (monitored since 2019)
High-spill reason (company)
Data collection - EDM non-representative location
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 96 hours spilling →
River Tavy 67 96 up 14% 97%
Bosvigo Lane CSO
Overflow on sewer network
Company site name
BOSVIGO LN_CSO_TRURO
EA ID / permit
SBB00138 · 302673
Outlet location
SW81614525 (OS grid reference) · View on Apple Maps
WFD catchment
Kenwyn (GB108048002340)
Shellfish water
Fal Estuary
2024 spills / hours
2 / 26
Long-term average
1.5 spills a year (monitored since 2015)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 96 hours spilling →
Freshwater(S) 8 96 up 300% 100%
Exeter (Countess Wear) STW
Inlet overflow at sewage works
Sewage works
Exeter
Company site name
COUNTESS WEAR STW_PSCSOEO_EXETER
EA ID / permit
SBB00425 · 202475
Outlet location
SX94798924 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Exe Estuary
2024 spills / hours
34 / 138
Long-term average
20.9 spills a year (monitored since 2012)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 96 hours spilling →
River Exe Estuary(E) 25 96 down 26% 100%
Corner Lane Pumping Station
Storm discharge at pumping station
Company site name
CORNER LANE SPS_PSCSOEO_HALBERTON
EA ID / permit
SBB00306 · 201648
Outlet location
ST00741282 (OS grid reference) · View on Apple Maps
WFD catchment
Halberton Stream (GB108045014960)
2024 spills / hours
55 / 133
Long-term average
57.6 spills a year (monitored since 2018)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 95 hours spilling →
Tributary of Spratford Stream 51 95 down 7% 100%
St Newlyn East WwTW
Inlet overflow at sewage works
Sewage works
St Newlyn East
Company site name
NEWLYN EAST STW_SO_NEWLYN EAST
EA ID / permit
SBB01156 · NRA-SW-6625
Outlet location
SW82935688 (OS grid reference) · View on Apple Maps
WFD catchment
Gannel (Lower) (GB108049000220)
2024 spills / hours
90 / 103
Long-term average
67.0 spills a year (monitored since 2020)
High-spill reason (company)
Performance - SW Infiltration
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 92 hours spilling →
River Gannel 74 92 down 18% 100%
Church Cove Road PS
Storm discharge at pumping station
Company site name
CHURCH COVE RD SPS_PSCSOEO_CHURCH COVE
EA ID / permit
SBB00258 · 302945
Outlet location
SW71461275 (OS grid reference) · View on Apple Maps
WFD catchment
Fal / Helford (GB650806330000)
2024 spills / hours
4 / 22
Long-term average
4.8 spills a year (monitored since 2022)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 92 hours spilling →
Church Cove (C) 13 92 up 225% 100%
Metherell WwTW
Inlet overflow at sewage works
Sewage works
Metherell
Company site name
METHERELL STW_SO_METHERELL
EA ID / permit
SBB00763 · NRA-SW-4999
Outlet location
SX41066927 (OS grid reference) · View on Apple Maps
WFD catchment
Cotehele Stream (GB108047004070)
2024 spills / hours
42 / 703
Long-term average
30.8 spills a year (monitored since 2019)
Investigation
UWWTR investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 92 hours spilling →
Tributary of River Tamar 19 92 down 55% 100%
Steamer Quay Bridgetown CSO
Overflow on sewer network
Company site name
BRIDGETOWN STEAMER QUAY_CSO_TOTNES
EA ID / permit
SBB01167 · 201695
Outlet location
SX80686020 (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
43 / 115
Long-term average
44.4 spills a year (monitored since 2018)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Operational investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 91 hours spilling →
River Dart Estuary 39 91 down 9% 100%
Sungirt Lane CSO
Overflow on sewer network
Company site name
SUNGIRT LANE_CSO_LISKEARD
EA ID / permit
SBB01193 · 303471
Outlet location
SX25286414 (OS grid reference) · View on Apple Maps
WFD catchment
East Looe River (GB108048001440)
Bathing water
East Looe
2024 spills / hours
21 / 61
Long-term average
27.6 spills a year (monitored since 2015)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 91 hours spilling →
Tributary of East Looe River 29 91 up 38% 100%
Bosorne Road Sewer Overflow
Overflow on sewer network
Company site name
BOSORNE RD 1_CSOEO_ST JUST
EA ID / permit
SBB00135 · 303091
Outlet location
SW35503100 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
10 / 3.1
Long-term average
18.6 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 91 hours spilling →
Atlantic / Porth Nanven Stream 43 91 up 330% 98%
Adit Lane CSO
Overflow on sewer network
Company site name
ADIT LANE_CSO_SALTASH
EA ID / permit
SBB00038 · 302582
Outlet location
SX42565941 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
57 / 57
Long-term average
38.3 spills a year (monitored since 2015)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 90 hours spilling →
Tributary of Saltmill Creek(S) 60 90 up 5% 97%
Grampound Playing Field CSO
Overflow on sewer network
Company site name
Grampound No1_CSO_Grampound
EA ID / permit
SBB00508 · NRA-SW-6729
Outlet location
SW93294837 (OS grid reference) · View on Apple Maps
WFD catchment
Lower River Fal (GB108048001270)
2024 spills / hours
64 / 105
Long-term average
45.8 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 89 hours spilling →
River Fal 54 89 down 16% 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.