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
Pottington Pumping Station
Storm discharge at pumping station
Company site name
POTTINGTON EST SPS_PSCSOEO_BARNSTAPLE
EA ID / permit
SBB00976 · 203284
Outlet location
SS54853332 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Taw-Torridge Estuary
2024 spills / hours
38 / 110
Long-term average
57.5 spills a year
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 89 hours spilling →
Taw Estuary & Tributary(E) 32 89 down 16% 100%
Duloe STW
Inlet overflow at sewage works
Sewage works
Duloe
Company site name
DULOE STW_SO_DULOE
EA ID / permit
SBB00380 · 15/48/173/P/2
Outlet location
SX23055823 (OS grid reference) · View on Apple Maps
WFD catchment
West Looe River (GB108048002000)
2024 spills / hours
118 / 343
Long-term average
138.1 spills a year (monitored since 2022)
High-spill reason (company)
Performance - SW Infiltration
Investigation
UWWTR investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 88 hours spilling →
Trib of West Looe River 41 88 down 65% 100%
Hms Cambridge Pumping Station
Storm discharge at pumping station
Company site name
HMS CAMBRIDGE SPS_PSCSOEO_WEMBURY
EA ID / permit
SBB00574 · 301619
Outlet location
SX50474835 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
0 / 0.0
Long-term average
19.7 spills a year (monitored since 2018)
Investigation
No investigation activity in reporting period
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 88 hours spilling →
English Channelat Wembury Bay 15 88 up from 0 100%
Honicknowle CSO
Overflow on sewer network
Company site name
R/O QUARRY COTTAGES_CSO_HONICKNOWLE LN
EA ID / permit
SBB00589 · 303435
Outlet location
SX46795865 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
11 / 54
Long-term average
16.5 spills a year (monitored since 2016)
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 88 hours spilling →
Honicknowle Stream (S) 32 88 up 191% 99%
CSO Adj Glenview
Overflow on sewer network
Company site name
GLENVIEW_CSO_YELVERTON
EA ID / permit
SBB00333 · 300963
Outlet location
SX52616598 (OS grid reference) · View on Apple Maps
WFD catchment
Meavy (GB108047003660)
2024 spills / hours
30 / 88
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 88 hours spilling →
River Meavy (S) 26 88 down 13% 100%
Northam Waste Water Pumping Station
Storm discharge at pumping station
Company site name
NORTHAM FSCN SPST_PSCSOEO_WESTWARD HO 1
EA ID / permit
SBB00853 · 2878
Outlet location
SS41932919 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Taw-Torridge Estuary
2024 spills / hours
65 / 109
Long-term average
60.6 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
Volume & pollution
Estimate from 87 hours spilling →
Bideford Bay & the Pill 49 87 down 25% 100%
Chard Road Combined Sewer Overflow
Overflow on sewer network
Company site name
CHARD ROAD_CSO_AXMINSTER
EA ID / permit
SBB00235 · DRA 1560
Outlet location
SY29899949 (OS grid reference) · View on Apple Maps
WFD catchment
Lower Axe (GB108045008870)
2024 spills / hours
31 / 90
Long-term average
29.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 87 hours spilling →
River Axe 29 87 down 6% 99%
Yellowsands Pumping Station
Storm discharge at pumping station
Company site name
YELLOW SANDS SPS_PSCSOEO_NEWQUAY
EA ID / permit
SBB01389 · 301323
Outlet location
SW79036174 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Fistral North; Fistral South
2024 spills / hours
41 / 89
Long-term average
32.6 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 86 hours spilling →
Atlantic Ocean (C) 37 86 down 10% 100%
CSO at Dunstanville Terrace
Overflow on sewer network
Company site name
GREENBANK GARDENS_CSO_FALMOUTH
EA ID / permit
SBB00335 · 303013
Outlet location
SW80543343 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Fal Estuary
2024 spills / hours
41 / 36
Long-term average
25.5 spills a year (monitored since 2011)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Operational investigation completed
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 85 hours spilling →
Penryn River(E) 47 85 up 15% 100%
Kingsand Sewage Pumping Station
Storm discharge at pumping station
Company site name
MARKET STREET SPS_PSCSOEO_KINGSAND
EA ID / permit
SBB00641 · 301903
Outlet location
SX43515044 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Kingsand
2024 spills / hours
21 / 34
Long-term average
16.0 spills a year (monitored since 2010)
Investigation
No investigation activity in reporting period
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 85 hours spilling →
Cawsand Bay (C) 21 85 no change 96%
Mutton Cove Pumping Station
Storm discharge at pumping station
Company site name
MUTTON COVE SPS_PSCSOEO_PLYMOUTH
EA ID / permit
SBB00821 · 300824
Outlet location
SX45295395 (OS grid reference) · View on Apple Maps
WFD catchment
PLYMOUTH TAMAR (GB520804714300)
2024 spills / hours
39 / 63
Long-term average
51.3 spills a year (monitored since 2016)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 84 hours spilling →
River Tamar (Estuarine) 41 84 up 5% 100%
Hartland Pscso/EO
Storm discharge at pumping station
Company site name
HARTLAND SPS_PSCSOEO_HARTLAND
EA ID / permit
SBB00542 · 201647
Outlet location
SS25802440 (OS grid reference) · View on Apple Maps
WFD catchment
Abbey River (GB108050014050)
2024 spills / hours
32 / 75
Long-term average
22.5 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 83 hours spilling →
River Abby (S) 31 83 down 3% 100%
Kings Nympton (South) WwTW SSO
Storm tank at sewage works
Sewage works
Kings Nympton
Company site name
KINGS NYMPTON SOUTH STW_SSO_KINGS NYMPTON
EA ID / permit
SBB00638 · NRA-SW-1317
Outlet location
SS68491900 (OS grid reference) · View on Apple Maps
WFD catchment
Mole (Taw to Bray) (GB108050014380)
2024 spills / hours
26 / 196
Long-term average
39.0 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 82 hours spilling →
Trib of River Taw 21 82 down 19% 97%
Ocean Court Pumping Station
Storm discharge at pumping station
Company site name
OCEAN COURT SPS_PSCSOEO_PLYMOUTH
EA ID / permit
SBB00865 · 300823
Outlet location
SX45835385 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
12 / 20
Long-term average
33.6 spills a year (monitored since 2016)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
No investigation activity in reporting period
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 80 hours spilling →
Plymouth Sound (Estuarine) 35 80 up 192% 100%
Lynmouth (Manor Gardens) STW
Storm tank at sewage works
Sewage works
Lynmouth
Company site name
LYNMOUTH STW_SSO_LYNMOUTH
EA ID / permit
SBB00729 · 202404
Outlet location
SS72385023 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Lynmouth
2024 spills / hours
6 / 25
Long-term average
19.9 spills a year (monitored since 2010)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Monitor below 90%
Telemetry or data archiving failure / issue · Resolved - Sep
Investigation
No investigation activity in reporting period
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 80 hours spilling →
Lynmouth Bay(C) 31 80 up 417% 78%
Glebe Farm Pumping Station
Storm discharge at pumping station
Company site name
GLEBE FARM SPS_PSCSOEO_BUCKERELL
EA ID / permit
SBB00492 · 201641
Outlet location
ST12720040 (OS grid reference) · View on Apple Maps
WFD catchment
Lower River Otter (GB108045009170)
2024 spills / hours
53 / 90
Long-term average
42.5 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 80 hours spilling →
Trib of the River Otter 34 80 down 36% 99%
Stockmeadow House CSO
Overflow on sewer network
Company site name
CHURCH ROAD_CSO_BISHOPSTEIGNTON
EA ID / permit
SBB01174 · 203350
Outlet location
SX91077348 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Teign Estuary
2024 spills / hours
66 / 195
Long-term average
49.1 spills a year (monitored since 2012)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 79 hours spilling →
Tributary O Teign Estuary(S) 47 79 down 29% 100%
Bolton Street CSO
Overflow on sewer network
Company site name
BOLTON STREET_CSO_BRIXHAM
EA ID / permit
SBB00130 · 201010
Outlet location
SX93975458 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
St Mary's Bay (Devon)
2024 spills / hours
59 / 114
Long-term average
58.7 spills a year
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Operational investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 79 hours spilling →
English Channel(C) 64 79 up 8% 100%
Talaton Pumping Station
Storm discharge at pumping station
Company site name
TALATON SPS_PSCSOEO_TALATON
EA ID / permit
SBB01202 · 201650
Outlet location
SY06869982 (OS grid reference) · View on Apple Maps
WFD catchment
Upper Clyst (GB108045008860)
2024 spills / hours
36 / 143
Long-term average
23.2 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 77 hours spilling →
Tributary of River Clyst 23 77 down 36% 100%
Molland ( West ) STW
Inlet overflow at sewage works
Sewage works
Molland
Company site name
MOLLAND WEST STW_SO_MOLLAND
EA ID / permit
SBB00795 · 202201/CS/01
Outlet location
SS80402830 (OS grid reference) · View on Apple Maps
WFD catchment
Yeo (Molland) (GB108050014140)
2024 spills / hours
53 / 51
Long-term average
40.3 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 77 hours spilling →
Unnamed Watercourse (S) 38 77 down 28% 100%
Lower Ferry Pumping Station
Storm discharge at pumping station
Company site name
LOWER FERRY SPS_PSCSOEO_KINGSWEAR
EA ID / permit
SBB00712 · 200160/PC/01
Outlet location
SX88125103 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Warfleet Creek, Dart Estuary
2024 spills / hours
52 / 84
Long-term average
53.6 spills a year (monitored since 2017)
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 77 hours spilling →
River Dart (Estuarine) 44 77 down 15% 100%
Eden Park CSO
Overflow on sewer network
Company site name
EDEN PARK_CSO_BRIXHAM
EA ID / permit
SBB00403 · 202704
Outlet location
SX92175532 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Brixham
2024 spills / hours
34 / 129
Long-term average
19.5 spills a year (monitored since 2011)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 76 hours spilling →
Higher Brixham Stream(S) 23 76 down 32% 100%
Oxen Cove Pumping Station
Storm discharge at pumping station
Company site name
OXEN COVE SPST_PSCSOEO_BRIXHAM
EA ID / permit
SBB00896 · 200524
Outlet location
SX92505658 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Shellfish water
Brixham
2024 spills / hours
34 / 69
Long-term average
34.4 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 76 hours spilling →
Brixham Outer Harbour(C) 39 76 up 15% 100%
Barn Park Road CSO
Overflow on sewer network
Company site name
BARN PARK ROAD_CSO_PLYMOUTH
EA ID / permit
SBB00071 · 301755
Outlet location
SX46645492 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
70 / 59
Long-term average
36.4 spills a year (monitored since 2017)
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 75 hours spilling →
Pennycomequick Stream via SWS 69 75 down 1% 100%
Railway Pscso/EO
Storm discharge at pumping station
Company site name
RAILWAY SPS_PSCSOEO_LAPFORD
EA ID / permit
SBB01013 · 202173
Outlet location
SS72910750 (OS grid reference) · View on Apple Maps
WFD catchment
Lower River Yeo (Lapford) (GB108050014640)
2024 spills / hours
18 / 52
Long-term average
9.8 spills a year (monitored since 2022)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 75 hours spilling →
Trib of River Yeo (S) 21 75 up 17% 100%
Rolle Road Combined Sewer Overflow
Overflow on sewer network
Company site name
ROLLE RD_CSO_TORRINGTON
EA ID / permit
SBB01038 · 200076/CS/01
Outlet location
SS49901871 (OS grid reference) · View on Apple Maps
WFD catchment
Torridge (Lew to Estuary) (GB108050014660)
Shellfish water
Taw-Torridge Estuary
2024 spills / hours
72 / 130
Long-term average
78.7 spills a year (monitored since 2018)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation completed, Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 75 hours spilling →
Castle Hill Stream 58 75 down 19% 98%
St Columb STW
Storm tank at sewage works
Sewage works
St Columb
Company site name
ST COLUMB STW_SSO_ST COLUMB
EA ID / permit
SBB01126 · 303683
Outlet location
SW90816397 (OS grid reference) · View on Apple Maps
WFD catchment
Menalhyl (GB108049000070)
Bathing water
Mawgan Porth
2024 spills / hours
48 / 332
Long-term average
35.1 spills a year (monitored since 2010)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 75 hours spilling →
River Menahyl 16 75 down 67% 100%
Lipson Vale 2 CSO
Overflow on sewer network
Company site name
LIPSON VALE 2_CSO_PLYMOUTH
EA ID / permit
SBB00692 · 301775
Outlet location
SX49355564 (OS grid reference) · View on Apple Maps
WFD catchment
PLYMOUTH TAMAR (GB520804714300)
Bathing water
Plymouth Hoe West
2024 spills / hours
59 / 67
Long-term average
44.8 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 74 hours spilling →
Trib of the River Plym via SWS 52 74 down 12% 100%
Sandy Lane Pumping Station
Storm discharge at pumping station
Company site name
SANDY LANE LF SPST_PSCSOEO_DAWLISH
EA ID / permit
SBB01053 · 201966
Outlet location
SX97367649 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
47 / 80
Long-term average
44.9 spills a year
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Operational investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing, Bathing Water and/or Shellfish Water improvement ongoing
Volume & pollution
Estimate from 74 hours spilling →
Lyme Bay (Coastal) 49 74 up 4% 100%
Il'Cmbe Resewerage- Hele Beach Tank
Storm discharge at pumping station
Company site name
HELE BAY SPS_PSCSOEO_ILFRACOMBE
EA ID / permit
SBB00602 · 004365/PC/01
Outlet location
SS53704809 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Ilfracombe Hele
2024 spills / hours
60 / 432
Long-term average
49.8 spills a year (monitored since 2011)
Investigation
No investigation activity in reporting period
Improvement
Env Act (SODRP) improvement ongoing, Bathing Water and/or Shellfish Water improvement ongoing
Volume & pollution
Estimate from 74 hours spilling →
Hele Bay - Bristol Channel 28 74 down 53% 100%
Kings Bridge CSO
Overflow on sewer network
Company site name
KINGS BRIDGE_CSO_MORETONHAMPSTEAD
EA ID / permit
SBB00636 · 201691
Outlet location
SX76008571 (OS grid reference) · View on Apple Maps
WFD catchment
Wray Brook (GB108046008330)
2024 spills / hours
62 / 118
Long-term average
47.5 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 74 hours spilling →
Wray Brook (S) 49 74 down 21% 100%
Grampound Pumping Station
Storm discharge at pumping station
Company site name
GRAMPOUND SPS_PSCSOEO_GRAMPOUND
EA ID / permit
SBB00509 · 301609
Outlet location
SW93294838 (OS grid reference) · View on Apple Maps
WFD catchment
Lower River Fal (GB108048001270)
2024 spills / hours
32 / 55
Long-term average
27.1 spills a year (monitored since 2018)
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 73 hours spilling →
River Fal 35 73 up 9% 100%
Central Park CSO
Overflow on sewer network
Company site name
CENTRAL PARK_CSO_PLYMOUTH
EA ID / permit
SBB00221 · 301744
Outlet location
SX46225441 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
18 / 20
Long-term average
24.7 spills a year (monitored since 2016)
Investigation
UWWTR investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 72 hours spilling →
Stonehouse Creek via SWS (Est) 28 72 up 56% 99%
Broadwindsor WwTW
Inlet overflow at sewage works
Sewage works
Broadwindsor
Company site name
BROADWINDSOR STW_SO_BROADWINDSOR
EA ID / permit
SBB00167 · NRA-SW-4946
Outlet location
ST43280325 (OS grid reference) · View on Apple Maps
WFD catchment
Upper Axe (GB108045014840)
2024 spills / hours
61 / 134
Long-term average
76.2 spills a year (monitored since 2019)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 71 hours spilling →
Tributary of Drimpton Stream 55 71 down 10% 100%
Larkstone Lane Storm Tank CSO
Overflow on sewer network
Company site name
HARBOUR LARKSTONE LN_CSO_ILFRACOMBE
EA ID / permit
SBB00672 · 203644
Outlet location
SS52574769 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
20 / 53
Long-term average
50.0 spills a year (monitored since 2010)
Investigation
UWWTR investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 71 hours spilling →
Ilfracombe Harbour(C) 29 71 up 45% 100%
King George'S Field PS
Storm discharge at pumping station
Company site name
SHALDON SPST_PSCSOEO_TEIGNMOUTH
EA ID / permit
SBB00634 · 203348
Outlet location
SX93017246 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Shaldon
Shellfish water
Teign Estuary
2024 spills / hours
28 / 76
Long-term average
20.0 spills a year (monitored since 2011)
Investigation
No investigation activity in reporting period
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 71 hours spilling →
Teign Estuary(E) 24 71 down 14% 100%
Drewsteignton STW
Inlet overflow at sewage works
Sewage works
Drewsteignton
Company site name
DREWSTEIGNTON STW_SO_CHAGFORD
EA ID / permit
SBB00376 · NRA-SW-6987
Outlet location
SX73799148 (OS grid reference) · View on Apple Maps
WFD catchment
Fingle Brook (GB108046008570)
2024 spills / hours
126 / 535
Long-term average
93.8 spills a year (monitored since 2021)
Monitor below 90%
Power failure / issue · Resolved - Oct
Investigation
UWWTR investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 70 hours spilling →
Fingle Brook 26 70 down 79% 85%
Blundells ROAD_CSO_TIVERTON
Overflow on sewer network
EA ID / permit
SBB01418 · Permit applied for
Outlet location
SS97341270 (OS grid reference) · View on Apple Maps
WFD catchment
Lowman (GB108045015030)
2024 spills / hours
56 / 33
Long-term average
43.0 spills a year (monitored since 2023)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 68 hours spilling →
River Lowman 73 68 up 30% 100%
Woodland Ave CSO
Overflow on sewer network
Company site name
WOODLAND AV_CSO_HOLCOMBE
EA ID / permit
SBB01375 · 202488
Outlet location
SX95097428 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Teignmouth Holcombe
2024 spills / hours
46 / 83
Long-term average
33.9 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 68 hours spilling →
Stream Dis to Lyme Bay (S) 46 68 no change 100%
Kimberley Nurseries CSO
Overflow on sewer network
Company site name
SLAPTON_CSO_SLAPTON
EA ID / permit
SBB00633 · 201721
Outlet location
SX82144478 (OS grid reference) · View on Apple Maps
WFD catchment
Avon (Devon Tidal) and Sth Hams - Slapton (GB108046004810)
2024 spills / hours
87 / 157
Long-term average
65.5 spills a year (monitored since 2022)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Operational investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 68 hours spilling →
Stream (S) 68 68 down 22% 100%
Monkleigh Sewage Treatment Works
Inlet overflow at sewage works
Sewage works
Monkleigh
Company site name
MONKLEIGH STW_SO_MONKLEIGH
EA ID / permit
SBB00797 · DRA 1149
Outlet location
SS45822045 (OS grid reference) · View on Apple Maps
WFD catchment
Torridge (Lew to Estuary) (GB108050014660)
2024 spills / hours
72 / 89
Long-term average
59.6 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 68 hours spilling →
River Torridge 62 68 down 14% 100%
WwTW at Alswear No. 1
Inlet overflow at sewage works
Sewage works
At Alswear
Company site name
ALSWEAR NO 1 STW_SO_ALSWEAR
EA ID / permit
SBB01434 · SWWA 533
Outlet location
SS72312222 (OS grid reference) · View on Apple Maps
WFD catchment
MOLE (GB108050014110)
2024 spills / hours
31 / 59
Long-term average
32.8 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 67 hours spilling →
River Mole 42 67 up 35% 100%
Grampound Playing Field CSO
Overflow on sewer network
Company site name
GRAMPOUND NO 2_CSO_GRAMPOUND
EA ID / permit
SBB00507 · NRA-SW-6729
Outlet location
SW93294837 (OS grid reference) · View on Apple Maps
WFD catchment
Lower River Fal (GB108048001270)
2024 spills / hours
46 / 63
Long-term average
38.8 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 67 hours spilling →
River Fal 48 67 up 4% 100%
Coinagehall Street CSO
Overflow on sewer network
Company site name
COINAGEHALL ST_CSO_HELSTON
EA ID / permit
SBB00286 · 034260/CS/01
Outlet location
SW65532731 (OS grid reference) · View on Apple Maps
WFD catchment
Lower River Cober (GB108048001172)
2024 spills / hours
79 / 103
Long-term average
73.4 spills a year (monitored since 2020)
High-spill reason (company)
Not Applicable - Ongoing investigation
Monitor below 90%
Capital / maintenance works affect EDM operation · Resolved - Jun
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 67 hours spilling →
River Cober via SWS 61 67 down 23% 82%
Cadgwith New Road Pscso/EO
Storm discharge at pumping station
Company site name
CADGWITH SPS_PSCSOEO_CADGWITH
EA ID / permit
SBB00198 · 301589
Outlet location
SW72151458 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
9 / 60
Long-term average
7.0 spills a year (monitored since 2022)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 67 hours spilling →
English Channel (C) 10 67 up 11% 100%
Troon Farm CSO
Overflow on sewer network
Company site name
TROON 1&2_CSO_TROON
EA ID / permit
SBB01286 · 301810
Outlet location
SW65843815 (OS grid reference) · View on Apple Maps
WFD catchment
Roseworthy Stream (GB108049000560)
2024 spills / hours
84 / 125
Long-term average
49.8 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 66 hours spilling →
Red River (S) 71 66 down 15% 100%
Millbay Tanks
Overflow on sewer network
Company site name
MILBAY STORAGE TANK_CSOEO_PLYMOUTH
EA ID / permit
SBB00783 · 300820
Outlet location
SX47185357 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Plymouth Firestone Bay
2024 spills / hours
10 / 41
Long-term average
8.7 spills a year (monitored since 2010)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 65 hours spilling →
Plymouth Sound(E) 12 65 up 20% 100%
Tregony Bridge Pumping Station
Storm discharge at pumping station
Company site name
TREGONY SPST_PSCSOEO_TREGONY
EA ID / permit
SBB01278 · 301657
Outlet location
SW92074473 (OS grid reference) · View on Apple Maps
WFD catchment
Lower River Fal (GB108048001270)
Shellfish water
Fal Estuary
2024 spills / hours
6 / 41
Long-term average
19.0 spills a year (monitored since 2016)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 64 hours spilling →
River Fal 10 64 up 67% 100%
Langtree STW Septic Tank
Inlet overflow at sewage works
Sewage works
Langtree Septic
Company site name
LANGTREE STW_SO_LANGTREE
EA ID / permit
SBB00664 · 202198/CS/01
Outlet location
SS44991532 (OS grid reference) · View on Apple Maps
WFD catchment
Langtree Lake (GB108050014330)
2024 spills / hours
117 / 1,123
Long-term average
103.5 spills a year (monitored since 2022)
High-spill reason (company)
Performance - SW Infiltration
Investigation
Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 64 hours spilling →
Tributary of River Torridge(S) 65 64 down 44% 100%
Brixton Wastewater Treatment Works
Storm tank at sewage works
Sewage works
Brixton
Company site name
BRIXTON STW_SSO_BRIXTON
EA ID / permit
SBB00162 · 302993
Outlet location
SX55445115 (OS grid reference) · View on Apple Maps
WFD catchment
Silverbridge Lake (GB108047004000)
Shellfish water
Yealm
2024 spills / hours
60 / 399
Long-term average
40.8 spills a year (monitored since 2010)
Investigation
Operational investigation completed
Improvement
Env Act (SODRP) improvement ongoing, Operational improvement ongoing
Volume & pollution
Estimate from 64 hours spilling →
Broad Ooze, Yealm Estuary(E) 22 64 down 63% 99%

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.