Storm overflow register · 2025 annual return

South West Water storm overflows, 2025

South West Water reported 1,365 storm overflows in England for 2025. Together they recorded 46,164 spills over 407,006 hours, an average of 33.8 spills per overflow against 20.4 across England. That ranks 10 of 10 companies, where 1 is the fewest spills per overflow. Counting the same overflows in both years, spills were down 18% on 2024.

178 overflows did not spill · 275 spilled more than 60 times · 1,313 had monitors working for 90% of the year or more · 334 sewage treatment works with overflows

Hours spilling by month, 2025

Hours spilling, all South West Water overflows, from the start/stop records. Spills running across a month end are split between the months.

All South West Water storm overflows

Sorted by hours spilling. Open an overflow for its permit, location, reasons for high spills and improvement status.

Overflow	Discharges to	Spills 2025	Hours 2025	Spills vs 2024	Monitor uptime
Imperial Road Tank CSO Overflow on sewer network Company site name IMPERIAL RD - TANK_CSO_EXMOUTH EA ID / permit SBB00609 · 200123/CS/01 Outlet location SX99868111 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Exmouth Shellfish water Exe Estuary 2024 spills / hours 19 / 124 Long-term average 14.7 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 161 hours spilling →	Exe Estuary	21	161	up 11%	100%
St Giles on the Heath Storm discharge at pumping station Company site name ST GILES O T HEATH SPS_PSCSOEO_ST GILES EA ID / permit SBB01136 · 301650 Outlet location SX36028997 (OS grid reference) · View on Apple Maps WFD catchment Tamar (River Ottery to River Deer) (GB108047008030) 2024 spills / hours 17 / 70 Long-term average 17.5 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 159 hours spilling →	Tributary of the River Tamar	22	159	up 29%	96%
Echo Corner Pscso/EO Storm discharge at pumping station Company site name PORTHTOWAN BEACH No1 SPS_PSCSOEO_PTOWAN EA ID / permit SBB00968 · 301672 Outlet location SW69154802 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Porthtowan 2024 spills / hours 0 / 0.0 Long-term average 11.7 spills a year Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 159 hours spilling →	River Kenwyn	16	159	up from 0	100%
Lipson Vale 1 CSO Overflow on sewer network Company site name LIPSON VALE 1_CSO_PLYMOUTH EA ID / permit SBB00691 · 301774 Outlet location SX49355564 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Plymouth Hoe West 2024 spills / hours 101 / 170 Long-term average 94.8 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 158 hours spilling →	Trib of the River Plym via SWS	95	158	down 6%	100%
North Tawton WwTW Inlet overflow at sewage works Sewage works North Tawton Company site name NORTH TAWTON STW_SO_NORTH TAWTON EA ID / permit SBB00850 · NRA-SW-0005 Outlet location SS65460196 (OS grid reference) · View on Apple Maps WFD catchment Taw (Source to Bullow Brook) (GB108050008250) 2024 spills / hours 48 / 53 Long-term average 64.3 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 158 hours spilling →	River Taw	78	158	up 63%	100%
Lynton/Lynmouth Sewerage Storm discharge at pumping station Company site name BASKET SHOP SPS_PSCSOEO_LYNMOUTH EA ID / permit SBB00733 · 004517/PC/01 Outlet location SS72364984 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Lynmouth 2024 spills / hours 54 / 233 Long-term average 41.5 spills a year (monitored since 2010) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation Operational investigation completed Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 158 hours spilling →	Lynmouth Bay (E)	38	158	down 30%	100%
Pencepool Farm Pumping Station Storm discharge at pumping station Company site name PENSPOOL SPS_PSCSOEO_PLYMTREE EA ID / permit SBB00920 · 201399 Outlet location ST05220309 (OS grid reference) · View on Apple Maps WFD catchment Upper Clyst (GB108045008860) 2024 spills / hours 29 / 206 Long-term average 22.6 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 158 hours spilling →	Tributary of River Clyst (S)	21	158	down 28%	98%
Weston Mill Cemetery Tank CSO Overflow on sewer network Company site name WESTON MILL CEMETERY_CSO_PLYMOUTH EA ID / permit SBB01352 · 302611 Outlet location SX45575773 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 0 / 0.0 Long-term average 2.3 spills a year (monitored since 2015) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 157 hours spilling →	Weston Mill Stream(E)	21	157	up from 0	100%
Hayesend Farm CSO Overflow on sewer network Company site name HAYES END FARM_CSO_PLYMOUTH EA ID / permit SBB00552 · 302930 Outlet location SX47886139 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 3 / 24 Long-term average 8.2 spills a year (monitored since 2015) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 156 hours spilling →	Tributary of Tamerton Stream()	12	156	up 300%	93%
Hatherleigh Bridge CSO Overflow on sewer network Company site name HATHERLEIGH BRIDGE_CSO_HATHERLEIGH EA ID / permit SBB00545 · 201773 Outlet location SS54060421 (OS grid reference) · View on Apple Maps WFD catchment Lower River Lew (Torridge) (GB108050008220) 2024 spills / hours 84 / 435 Long-term average 112.9 spills a year (monitored since 2017) High-spill reason (company) Not asset maintenance - hydraulic capacity Monitor below 90% Comms failure / issue · Not Applicable - Ongoing investigation Investigation Operational investigation ongoing Improvement Env Act (SODRP) improvement ongoing, UWWTR improvement ongoing Volume & pollution Estimate from 154 hours spilling →	River Lew	44	154	down 48%	84%
Perry Street CSO Overflow on sewer network Company site name PERRY ST_CSO_TATWORTH EA ID / permit SBB00930 · 201826 Outlet location ST33600537 (OS grid reference) · View on Apple Maps WFD catchment Forton Brook (GB108045014820) 2024 spills / hours 48 / 305 Long-term average 48.0 spills a year (monitored since 2020) High-spill reason (company) Not Applicable - Ongoing investigation Investigation UWWTR investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 153 hours spilling →	Stream (S)	36	153	down 25%	100%
Pike Road Combined Sewer Overflow Overflow on sewer network Company site name RD OUTSIDE 31A PIKE RD_CSO_PLYMOUTH EA ID / permit SBB00936 · 301708 Outlet location SX50865588 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Plymouth Hoe East; Plymouth Hoe West 2024 spills / hours 83 / 164 Long-term average 101.1 spills a year (monitored since 2016) 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 153 hours spilling →	River Plym via SWS (Estuarine)	87	153	up 5%	99%
Knave-Go-Bye Combined Sewer Overflo Overflow on sewer network Company site name KNAVE-GO-BY_CSO_CAMBORNE EA ID / permit SBB00649 · 300701 Outlet location SW65103880 (OS grid reference) · View on Apple Maps WFD catchment Red River (Upper) (GB108049000600) 2024 spills / hours 47 / 138 Long-term average 34.8 spills a year (monitored since 2019) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 152 hours spilling →	Trib of Roseworthy Stream	40	152	down 15%	100%
Prixford Pumping Station Storm discharge at pumping station Company site name PRIXFORD SPS_PSCSOEO_PRIXFORD EA ID / permit SBB00988 · 201618 Outlet location SS54683665 (OS grid reference) · View on Apple Maps WFD catchment Knowl Water (GB108050020020) 2024 spills / hours 41 / 585 Long-term average 34.2 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 152 hours spilling →	Tributary of Knowle Water	15	152	down 63%	100%
Loddiswell WwTW Inlet overflow at sewage works Sewage works Loddiswell Company site name LODDISWELL STW_SSO_LODDISWELL EA ID / permit SBB00700 · DRA 1349 Outlet location SX72284800 (OS grid reference) · View on Apple Maps WFD catchment Avon - Lower (GB108046004900) Shellfish water Bigbury and Avon 2024 spills / hours 23 / 92 Long-term average 67.0 spills a year (monitored since 2017) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 152 hours spilling →	River Avon	15	152	down 35%	100%
St Leonards WwTW Inlet overflow at sewage works Sewage works St Leonards Company site name ST LEONARDS STW_SO_LAUNCESTON EA ID / permit SBB01143 · NRA-SW-6981 Outlet location SX35108499 (OS grid reference) · View on Apple Maps WFD catchment Tamar (River Ottery to River Lyd) (GB108047007940) 2024 spills / hours 30 / 106 Long-term average 36.1 spills a year (monitored since 2018) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 148 hours spilling →	River Tamar	39	148	up 30%	100%
Silverton WwTW Storm tank at sewage works Sewage works Silverton Company site name SILVERTON STW_SSO_SILVERTON EA ID / permit SBB01090 · SWWA 5 Outlet location SS97120142 (OS grid reference) · View on Apple Maps WFD catchment Lower Culm (GB108045014970) 2024 spills / hours 54 / 908 Long-term average 36.2 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 147 hours spilling →	Heal-Eye Stream	17	147	down 69%	100%
St Mellion Pumping Station Storm discharge at pumping station Company site name ST MELLION_PSCSOEO_ST MELLION EA ID / permit SBB01153 · 302501 Outlet location SX39096536 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 19 / 66 Long-term average 20.5 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 146 hours spilling →	St Mellion Stream(S)	22	146	up 16%	100%
Ugborough STW Inlet overflow at sewage works Sewage works Ugborough Company site name UGBOROUGH STW_SO_UGBOROUGH EA ID / permit SBB01294 · NRA-SW-6965 Outlet location SX67535540 (OS grid reference) · View on Apple Maps WFD catchment Lud Brook (GB108046005110) 2024 spills / hours 68 / 202 Long-term average 52.4 spills a year (monitored since 2021) High-spill reason (company) Performance - SW Infiltration Investigation Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 144 hours spilling →	(S) Trib of Lud Brook	54	144	down 21%	98%
Broadwoodkelly STW Storm tank at sewage works Sewage works Broadwoodkelly Company site name BROADWOODKELLY STW_SSO_BROADWOODKELLY EA ID / permit SBB00169 · 202216 Outlet location SS61210568 (OS grid reference) · View on Apple Maps WFD catchment Hole Brook (GB108050014090) 2024 spills / hours 13 / 140 Long-term average 15.8 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 144 hours spilling →	Tributary of Hole Brook(S)	14	144	up 8%	100%
Ferry Boat Inn Pumping Station Storm discharge at pumping station Company site name FERRY BOAT SPST_PSCSOEO_DITTISHAM EA ID / permit SBB00446 · 202713 Outlet location SX86745482 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Dittisham, Dart Estuary Shellfish water Dart 2024 spills / hours 66 / 157 Long-term average 64.8 spills a year (monitored since 2013) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation Operational investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 143 hours spilling →	River Dart Estuary	73	143	up 11%	100%
St Keverne STW Storm tank at sewage works Sewage works St Keverne Company site name ST KEVERNE STW_SSO_ST KEVERNE EA ID / permit SBB01141 · 15/48/231/P/19 Outlet location SW79002140 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Porthoustock 2024 spills / hours 60 / 888 Long-term average 49.4 spills a year (monitored since 2010) Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 143 hours spilling →	(S) St Keverne Stream	22	143	down 63%	100%
Bridge Street Quay CSO Overflow on sewer network Company site name BRIDGE STREET_CSO_KINGSBRIDGE EA ID / permit SBB00156 · 203436 Outlet location SX73574402 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Salcombe 2024 spills / hours 82 / 476 Long-term average 55.3 spills a year (monitored since 2015) High-spill reason (company) Performance - SW Infiltration Investigation Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 142 hours spilling →	Kingsbridge Estuary(E)	50	142	down 39%	100%
Denbury Wastewater Treatment Works Storm tank at sewage works Sewage works Denbury Company site name DENBURY STW_SSO_DENBURY EA ID / permit SBB00359 · NRA-SW-7808 Outlet location SX82626801 (OS grid reference) · View on Apple Maps WFD catchment Am Brook (GB108046005210) 2024 spills / hours 24 / 189 Long-term average 28.0 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 141 hours spilling →	Halwell Stream	9	141	down 63%	100%
Trehemborne PS Storm discharge at pumping station Company site name TREHEMBOURNE SPS_PSCSOEO_ST MERRYN EA ID / permit SBB01279 · 300016 Outlet location SW87267330 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 14 / 74 Long-term average 13.0 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 140 hours spilling →	Treyarnon Stream	22	140	up 57%	100%
Pathfinder Terminal PS Storm discharge at pumping station Company site name PATHFINDER SPST_PSCSOEO_TEDBURN ST MARY EA ID / permit SBB00913 · 203479 Outlet location SX82489395 (OS grid reference) · View on Apple Maps WFD catchment Culvery River (GB108045009220) 2024 spills / hours 28 / 180 Long-term average 19.2 spills a year (monitored since 2011) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 139 hours spilling →	Lilly Brook(S)	19	139	down 32%	100%
Steward Cottages SSO Overflow on sewer network Company site name STEWARDS COTTAGES_CSO_MORETONHAMPSTEAD EA ID / permit SBB01168 · NRA-SW-5469 Outlet location SX76568523 (OS grid reference) · View on Apple Maps WFD catchment Wray Brook (GB108046008330) 2024 spills / hours 14 / 46 Long-term average 26.5 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 139 hours spilling →	The Wray Brook	55	139	up 293%	100%
Buckleigh Pumping Station Storm discharge at pumping station Company site name BUCKLEIGH SPS_PSCSOEO_NORTHAM EA ID / permit SBB00184 · 200200 Outlet location SS43842823 (OS grid reference) · View on Apple Maps WFD catchment Kenwith Stream (GB108050014500) Shellfish water Taw-Torridge Estuary 2024 spills / hours 32 / 190 Long-term average 18.7 spills a year (monitored since 2016) Investigation No investigation activity in reporting period Improvement Bathing Water and/or Shellfish Water improvement ongoing Volume & pollution Estimate from 138 hours spilling →	Silford Stream	20	138	down 38%	100%
Branscombe WwTW Storm tank at sewage works Sewage works Branscombe Company site name BRANSCOMBE STW_SSO_BRANSCOMBE EA ID / permit SBB00145 · 003101/FN/01 Outlet location SY20598832 (OS grid reference) · View on Apple Maps WFD catchment Branscombe Stream (GB108045008630) 2024 spills / hours 29 / 180 Long-term average 20.6 spills a year (monitored since 2017) Investigation Operational investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 138 hours spilling →	Branscombe Stream	29	138	no change	100%
Sandford Wastewater Treatment Works Inlet overflow at sewage works Sewage works Sandford Company site name SANDFORD STW_SO_SANDFORD EA ID / permit SBB01050 · DRA 262 Outlet location SS83390224 (OS grid reference) · View on Apple Maps WFD catchment Middle Creedy (GB108045009090) 2024 spills / hours 90 / 261 Long-term average 53.2 spills a year (monitored since 2020) 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 138 hours spilling →	Tributary of River Creedy	56	138	down 38%	99%
Heybrook Bay Pumping Station Storm discharge at pumping station Company site name HEYBROOK BAY SPS_PSCSOEO_WEMBURY EA ID / permit SBB00567 · 301618 Outlet location SX49614870 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 51 / 137 Long-term average 58.6 spills a year (monitored since 2018) High-spill reason (company) Not Applicable - Ongoing investigation Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 136 hours spilling →	English Channel- Heybrook Bay	62	136	up 22%	100%
Old Coach Road CSO Overflow on sewer network Company site name OLD COACH RD_CSO_LANIVET EA ID / permit SBB00871 · 301686 Outlet location SX03736473 (OS grid reference) · View on Apple Maps WFD catchment Lanivet Stream (GB108049000030) Shellfish water Camel Estuary 2024 spills / hours 9 / 52 Long-term average 16.3 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 136 hours spilling →	Lanivet Stream	17	136	up 89%	100%
Antony STW (Inlet to Works) SSO Inlet overflow at sewage works Sewage works Antony Company site name ANTONY S T SEPTNK_SO_ANTONY EA ID / permit SBB00045 · NRA-SW-1004 Outlet location SX39845480 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 71 / 304 Long-term average 86.3 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 134 hours spilling →	River Lynher Estuary	64	134	down 10%	98%
Cargreen Pscso/EO Storm discharge at pumping station Company site name CARGREEN SPS_PSCSOEO_CARGREEN EA ID / permit SBB00210 · 302094 Outlet location SX43646257 (OS grid reference) · View on Apple Maps WFD catchment PLYMOUTH TAMAR (GB520804714300) 2024 spills / hours 44 / 68 Long-term average 42.0 spills a year (monitored since 2021) High-spill reason (company) Not Applicable - Ongoing investigation Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 131 hours spilling →	River Tamar (E)	49	131	up 11%	100%
Geevor Mine Pumping Station Storm discharge at pumping station Company site name GEEVOR MINE SPST_PSCSOEO_BOSCASWELL EA ID / permit SBB00487 · 303095 Outlet location SW37163491 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 25 / 97 Long-term average 22.3 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 130 hours spilling →	Atlantic Ocean Coastal	31	130	up 24%	100%
Brent Mill CSO Overflow on sewer network Company site name BRENT MILL_CSO_SOUTH BRENT EA ID / permit SBB00150 · 201720 Outlet location SX69735962 (OS grid reference) · View on Apple Maps WFD catchment Avon - Upper (GB108046004940) Shellfish water Bigbury and Avon 2024 spills / hours 56 / 157 Long-term average 29.0 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 129 hours spilling →	River Avon	36	129	down 36%	97%
Yealmpton WwTW Storm tank at sewage works Sewage works Yealmpton Company site name YEALMPTON STW_SSO_YEALMPTON EA ID / permit SBB01387 · 300436/FN/01 Outlet location SX57685138 (OS grid reference) · View on Apple Maps WFD catchment Lower River Yealm (GB108047004010) Shellfish water Yealm 2024 spills / hours 4 / 25 Long-term average 14.4 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 129 hours spilling →	River Yealm	14	129	up 250%	100%
Macey Steps CSO Overflow on sewer network Company site name MACEY STEPS_CSO_TORPOINT EA ID / permit SBB00734 · 301888 Outlet location SX43995527 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment 2024 spills / hours 61 / 129 Long-term average 49.6 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 128 hours spilling →	Hamoaze (Estuarine)	56	128	down 8%	96%
Keyberry Rd No.5 CSO Overflow on sewer network Company site name ADJ NO 5 KEYBERRY RD_CSO_NEWTON ABBOT EA ID / permit SBB00627 · 203101 Outlet location SX87067050 (OS grid reference) · View on Apple Maps WFD catchment Aller Brook (Teign) - Lower (GB108046005350) Shellfish water Teign Estuary 2024 spills / hours 22 / 102 Long-term average 15.4 spills a year Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 128 hours spilling →	Sewer to Aller Brook (S)	24	128	up 9%	98%
Cattedown Road Pumping Station Storm discharge at pumping station Company site name CATTEDOWN ROAD SPS_PSCSOEO_PLYMOUTH EA ID / permit SBB00216 · 300737 Outlet location SX49245343 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Plymouth Hoe East 2024 spills / hours 31 / 114 Long-term average 29.8 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 128 hours spilling →	Plymouth Sound (Estuarine)	34	128	up 10%	100%
Anchorwood PS Storm discharge at pumping station Company site name ANCHORWOOD SPS_PSCSOEO_BARNSTAPLE EA ID / permit SBB00044 · 203281 Outlet location SS55573301 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Shellfish water Taw-Torridge Estuary 2024 spills / hours 22 / 58 Long-term average 15.5 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 127 hours spilling →	River Taw Estuary(E)	44	127	up 100%	95%
Chulmleigh (Golf Course) Overflow on sewer network Company site name GOLF COURSE_CSO_CHULMLEIGH EA ID / permit SBB00256 · 203146 Outlet location SS68431413 (OS grid reference) · View on Apple Maps WFD catchment Lower Little River Dart (GB108050014340) 2024 spills / hours 71 / 162 Long-term average 59.5 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 127 hours spilling →	Little Dart River (S)	75	127	up 6%	96%
Rackenford WwTW SSO Storm tank at sewage works Sewage works Rackenford Company site name RACKENFORD STW_SSO_RACKENFORD EA ID / permit SBB01010 · NRA-SW-1492 Outlet location SS85061783 (OS grid reference) · View on Apple Maps WFD catchment Upper Little Dart River (GB108050013980) 2024 spills / hours 77 / 321 Long-term average 51.3 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 127 hours spilling →	Trib. of Little Dart River	37	127	down 52%	100%
Gladstone Terrace North Overflow on sewer network Company site name GLADSTONE TERRACE NORTH_CSO_PENZANCE EA ID / permit SBB00491 · 300271 Outlet location SW49953134 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Long Rock 2024 spills / hours 23 / 86 Long-term average 15.9 spills a year (monitored since 2010) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing, Bathing Water and/or Shellfish Water improvement ongoing Volume & pollution Estimate from 125 hours spilling →	Longrock Stream	23	125	no change	100%
Old Mill Road Overflow on sewer network Company site name OLD MILL RD_CSO_TORQUAY EA ID / permit SBB00881 · 200230 Outlet location SX90226316 (OS grid reference) · View on Apple Maps WFD catchment Not part of a WFD catchment Bathing water Torre Abbey 2024 spills / hours 39 / 92 Long-term average 58.0 spills a year (monitored since 2011) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation Operational investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 125 hours spilling →	Cockington Stream to Sea	42	125	up 8%	100%
Queensway Pumping Station Storm discharge at pumping station Company site name QUEENSWAY SPS_PSCSOEO_NEWTON ABBOT EA ID / permit SBB01001 · 203103 Outlet location SX87197071 (OS grid reference) · View on Apple Maps WFD catchment Aller Brook (Teign) - Lower (GB108046005350) Shellfish water Teign Estuary 2024 spills / hours 24 / 119 Long-term average 14.1 spills a year Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 125 hours spilling →	SWS to the Aller Brook (S)	20	125	down 17%	100%
Yeoford Wastewater Treatment Works Storm tank at sewage works Sewage works Yeoford Company site name YEOFORD STW_SSO_CREDITON EA ID / permit SBB01390 · NRA-SW-6626 Outlet location SX78949874 (OS grid reference) · View on Apple Maps WFD catchment Upper Yeo (Creedy) (GB108045009240) 2024 spills / hours 123 / 1,490 Long-term average 90.0 spills a year (monitored since 2018) High-spill reason (company) Performance - SW Infiltration Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 124 hours spilling →	River Yeo	31	124	down 75%	100%
Mill Race Combined Sewer Overflow Overflow on sewer network Company site name MILL RACE/RIVER EXE_CSO_EXETER EA ID / permit SBB00778 · 201896 Outlet location SX93419062 (OS grid reference) · View on Apple Maps WFD catchment North Brook (East Devon) (GB108045009050) Shellfish water Exe Estuary 2024 spills / hours 36 / 144 Long-term average 31.9 spills a year (monitored since 2018) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 124 hours spilling →	Mill Race, River Exe	37	124	up 3%	100%
Crowndale WwTW Storm tank at sewage works Sewage works Crowndale Company site name CROWNDALE STW_SSO_TAVISTOCK EA ID / permit SBB00327 · 301918 Outlet location SX47257213 (OS grid reference) · View on Apple Maps WFD catchment Lower River Tavy (GB108047007840) 2024 spills / hours 91 / 1,428 Long-term average 73.0 spills a year (monitored since 2018) Monitor below 90% Telemetry or data archiving failure / issue · Not Applicable - Ongoing investigation Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 122 hours spilling →	River Tavy	9	122	down 90%	6%
Week St Mary STW Inlet overflow at sewage works Sewage works Week St Mary Company site name WEEK ST MARY STW_SO_WEEK ST MARY EA ID / permit SBB01327 · NRA-SW-6685 Outlet location SX23699808 (OS grid reference) · View on Apple Maps WFD catchment Upper River Neet (GB108049007250) 2024 spills / hours 47 / 216 Long-term average 74.8 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 121 hours spilling →	(S) Week Brook	40	121	down 15%	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.