Storm overflow register · 2025 annual return

Yorkshire Water storm overflows, 2025

Yorkshire Water reported 2,187 storm overflows in England for 2025. Together they recorded 51,431 spills over 285,931 hours, an average of 23.5 spills per overflow against 20.4 across England. That ranks 8 of 10 companies, where 1 is the fewest spills per overflow. Counting the same overflows in both years, spills were down 25% on 2024.

291 overflows did not spill · 196 spilled more than 60 times · 1,981 had monitors working for 90% of the year or more · 283 sewage treatment works with overflows

Hours spilling by month, 2025

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

All Yorkshire 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
Accommodation Road CSO Overflow on sewer network Company site name ACCOMMODATION ROAD/CSO EA ID / permit YWS01107 · WA6350 Outlet location SE3105234218 (OS grid reference) · View on Apple Maps WFD catchment Meanwood Beck from Source to River Aire (GB104027062900) 2024 spills / hours 58 / 110 Long-term average 50.8 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 76 hours spilling →	Stoney Rock Beck	39	76	down 33%	100%
Harehills Lane No 2 CSO Overflow on sewer network Company site name HAREHILLS LANE/NO 2 CSO EA ID / permit YWS01613 · WRA8142 Outlet location SE3191435890 (OS grid reference) · View on Apple Maps WFD catchment Meanwood Beck from Source to River Aire (GB104027062900) 2024 spills / hours 51 / 57 Long-term average 71.8 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 76 hours spilling →	Gipton Beck	49	76	down 4%	100%
Little Barugh Sewage Treatment Work Inlet overflow at sewage works Sewage works Little Barugh Sewage Treatment Work Company site name LITTLE BARUGH/STW EA ID / permit YWS00492 · 27/25/0111 Outlet location SE7600079380 (OS grid reference) · View on Apple Maps WFD catchment Costa Beck from Pickering Beck to R Rye/Ackland Beck (GB104027068401) 2024 spills / hours 26 / 126 Long-term average 35.0 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 76 hours spilling →	Unnamed Trib of Costa Beck	18	76	down 31%	100%
Reeth/Fremington/Grinton STW Inlet overflow at sewage works Sewage works Reeth Fremington Grinton Company site name REETH/STW EA ID / permit YWS01117 · WA6395 Outlet location SE0416098990 (OS grid reference) · View on Apple Maps WFD catchment Arkle Beck from Source to River Swale (GB104027069170) 2024 spills / hours 135 / 500 Long-term average 68.8 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation UWWTR investigation ongoing, Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 76 hours spilling →	Arkle Beck	43	76	down 68%	100%
Preston Street CSO Overflow on sewer network Company site name PRESTON STREET/CSO EA ID / permit YWS01351 · WRA6948 Outlet location SE1520033370 (OS grid reference) · View on Apple Maps WFD catchment Bradford Beck (Clayton Bk to R Aire) (GB104027062862) 2024 spills / hours 33 / 62 Long-term average 43.7 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 76 hours spilling →	Bradford Beck	40	76	up 21%	97%
Brimington Common Westwood Lane SPS Overflow on sewer network Company site name WESTWOOD LANE/CSO EA ID / permit YWS01466 · WRA7709 Outlet location SK4125071910 (OS grid reference) · View on Apple Maps WFD catchment Rother, Spittal Brook to Doe Lea (GB104027057771) 2024 spills / hours 30 / 62 Long-term average 24.3 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 76 hours spilling →	Trib of Trough Beck	28	76	down 7%	100%
Swinton Road CSO Overflow on sewer network Company site name SWINTON ROAD/CSO EA ID / permit YWS01877 · WRA8600 Outlet location SK4753799599 (OS grid reference) · View on Apple Maps WFD catchment Don from Greasborough Dyke to River Dearne (GB104027057452) 2024 spills / hours 39 / 84 Long-term average 33.0 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 76 hours spilling →	River Don via Pubic Sewer	25	76	down 36%	100%
Willow Road CSO Overflow on sewer network Company site name BURLEY LODGE ROAD/CSO EA ID / permit YWS01850 · WRA8555 Outlet location SE2793034100 (OS grid reference) · View on Apple Maps WFD catchment Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035) 2024 spills / hours 27 / 63 Long-term average 25.5 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 75 hours spilling →	River Aire	25	75	down 7%	100%
Yws Unknown Sites Default Overflow on sewer network Company site name LEA ROAD MANSE/CSO EA ID / permit YWS00058 · 1828 Outlet location SE3537078360 (OS grid reference) · View on Apple Maps WFD catchment Drone from Source to River Whitting (GB104027057710) 2024 spills / hours 64 / 291 Long-term average 25.8 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 75 hours spilling →	River Rother	11	75	down 83%	97%
Ferrybridge SPS & Storm Tank Site Storm discharge at pumping station Company site name FERRYBRIDGE/CSO EA ID / permit YWS01439 · WRA7552 Outlet location SE4800624869 (OS grid reference) · View on Apple Maps WFD catchment Aire from Wyke Beck to Fryston Beck (GB104027063036) 2024 spills / hours 10 / 30 Long-term average 28.8 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 75 hours spilling →	Fryston Beck	18	75	up 80%	100%
Featherstone No 2 CSO Overflow on sewer network Company site name FEATHERSTONE/NO 2 CSO EA ID / permit YWS01635 · WRA8171 Outlet location SE4224520005 (OS grid reference) · View on Apple Maps WFD catchment Went from Source to Hoyle Mill Stream (GB104027063380) 2024 spills / hours 24 / 39 Long-term average 29.3 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 75 hours spilling →	Trib of Went Beck	25	75	up 4%	100%
St George'S Road CSO Overflow on sewer network Company site name ST GEORGES ROAD/NO 2 CSO EA ID / permit YWS01760 · WRA8432 Outlet location SE1605007560 (OS grid reference) · View on Apple Maps WFD catchment New Mill Dike from Source to River Holme (GB104027057610) 2024 spills / hours 17 / 21 Long-term average 14.8 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 75 hours spilling →	Trib of Jackson Bridge Dike	23	75	up 35%	100%
Allerston Sewage Pumping Station Storm discharge at pumping station Company site name ALLERSTON/CSO EA ID / permit YWS00524 · 27/27/0093 Outlet location SE8790181980 (OS grid reference) · View on Apple Maps WFD catchment River Derwent from Troutsdale Beck to River Rye (GB104027067930) 2024 spills / hours 15 / 67 Long-term average 4.3 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 75 hours spilling →	Allerston Beck	5	75	down 67%	100%
Micklefield STW Storm tank at sewage works Sewage works Micklefield Company site name MICKLEFIELD/NO 2 STW EA ID / permit YWS00393 · 27/24/0179 Outlet location SE4487033240 (OS grid reference) · View on Apple Maps WFD catchment Carr Dike from Source to Green Dike (GB104027063640) 2024 spills / hours 19 / 135 Long-term average 10.5 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 74 hours spilling →	Sheep Dike	10	74	down 47%	100%
Sheriff Hutton STW Inlet overflow at sewage works Sewage works Sheriff Hutton Company site name SHERIFF HUTTON/STW EA ID / permit YWS00436 · 27/24/0363 Outlet location SE6439065580 (OS grid reference) · View on Apple Maps WFD catchment Foss from Farlington Beck to the Syke (GB104027063540) 2024 spills / hours 12 / 29 Long-term average 15.7 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 74 hours spilling →	Howl Beck	17	74	up 42%	100%
Prince of Wales Public Sewer Overflow on sewer network Company site name HALSALL AVENUE/CSO EA ID / permit YWS01685 · WRA8224 Outlet location SK3931087310 (OS grid reference) · View on Apple Maps WFD catchment Car Brook from Source to River Don (GB104027057360) 2024 spills / hours 44 / 89 Long-term average 52.2 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 74 hours spilling →	Car Brook (via Public Sewer)	36	74	down 18%	100%
Croft Mills CSO Overflow on sewer network Company site name CROFT MILLS/CSO EA ID / permit YWS01946 · WRA8738 Outlet location SD9743043540 (OS grid reference) · View on Apple Maps WFD catchment Eastburn Beck from Source to Lothersdale Beck (GB104027062930) 2024 spills / hours 15 / 39 Long-term average 63.3 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 74 hours spilling →	Ickornshaw Beck	45	74	up 200%	100%
Kirk Hammerton STW Inlet overflow at sewage works Sewage works Kirk Hammerton Company site name KIRK HAMMERTON/STW EA ID / permit YWS00235 · 27/21/0139 Outlet location SE4759055460 (OS grid reference) · View on Apple Maps WFD catchment River Nidd from Crimple Beck to River Ouse (GB104027068292) 2024 spills / hours 32 / 113 Long-term average 47.7 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 74 hours spilling →	River Nidd	21	74	down 34%	100%
Sheaf Bank Combined Sewer Overflow Overflow on sewer network Company site name SHEAF BANK/CSO EA ID / permit YWS00692 · 3285 Outlet location SK3527085190 (OS grid reference) · View on Apple Maps WFD catchment River Sheaf from Source to River Porter (GB104027057750) 2024 spills / hours 40 / 83 Long-term average 35.2 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 74 hours spilling →	River Sheaf	33	74	down 18%	99%
Sleights SPS Overflow on sewer network Company site name SLEIGHTS/CSO EA ID / permit YWS01245 · WADC385 Outlet location NZ5750008300 (OS grid reference) · View on Apple Maps WFD catchment Esk from Sleddale Beck to Ruswarp (GB104027068150) 2024 spills / hours 0 / 0.0 Long-term average 13.5 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 74 hours spilling →	River Esk	46	74	up from 0	100%
Sowerby New Road CSO Overflow on sewer network Company site name SOWERBY NEW ROAD/CSO EA ID / permit YWS00005 · 1061 Outlet location SE0548723826 (OS grid reference) · View on Apple Maps WFD catchment Calder from Colden Water to Ryburn Confluence (GB104027062641) 2024 spills / hours 74 / 96 Long-term average 72.7 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 73 hours spilling →	River Calder	66	73	down 11%	100%
Claremont Crescent No.2 CSO Overflow on sewer network Company site name CLAREMONT CRES/NO 2 CSO EA ID / permit YWS00810 · EPRHB3894NX Outlet location SE2897036403 (OS grid reference) · View on Apple Maps WFD catchment Meanwood Beck from Source to River Aire (GB104027062900) 2024 spills / hours 56 / 85 Long-term average 49.7 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 73 hours spilling →	Meanwood Beck & Stain Beck	41	73	down 27%	98%
Rotherham (Effingham Square) SPS Overflow on sewer network Company site name CRINOLENE HOUSE/CSO EA ID / permit YWS01460 · WRA7695 Outlet location SK4290093250 (OS grid reference) · View on Apple Maps WFD catchment Don from Greasborough Dyke to River Dearne (GB104027057452) 2024 spills / hours 7 / 52 Long-term average 12.7 spills a year (monitored since 2020) Monitor below 90% Sensor failure / issue · Resolved - Jul Investigation Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 73 hours spilling →	Don via Surface Water Sewer	11	73	up 57%	89%
Woodlands Doncaster Road CSO Overflow on sewer network Company site name WOODLANDS DONC ROAD/CSO EA ID / permit YWS01645 · WRA8183 Outlet location SE5469408050 (OS grid reference) · View on Apple Maps WFD catchment Ea Beck from the Skell to River Don (GB104027057591) 2024 spills / hours 44 / 64 Long-term average 80.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 73 hours spilling →	Mill Dike	26	73	down 41%	100%
Beckfoot Lane CSO Overflow on sewer network Company site name BECKFOOT LANE/CSO EA ID / permit YWS01614 · WRA8143 Outlet location SE1121638004 (OS grid reference) · View on Apple Maps WFD catchment Aire (R Worth to Gill Beck) (GB104027063034) 2024 spills / hours 36 / 129 Long-term average 50.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 73 hours spilling →	River Aire	23	73	down 36%	100%
Fulford Main CSO Overflow on sewer network Company site name FULFORD MAIN STREET/CSO EA ID / permit YWS00814 · 952 Outlet location SE6109248703 (OS grid reference) · View on Apple Maps WFD catchment Ouse from River Nidd to Stillingfleet Beck (GB104027069593) 2024 spills / hours 56 / 76 Long-term average 51.0 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 72 hours spilling →	Germany Beck	46	72	down 18%	98%
The Mill No 2 CSO Overflow on sewer network Company site name THE MILL/NO 2 CSO EA ID / permit YWS00657 · 3006 Outlet location SK4354381608 (OS grid reference) · View on Apple Maps WFD catchment Rother, Doe Lea to Don (GB104027057772) 2024 spills / hours 29 / 55 Long-term average 32.2 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 72 hours spilling →	Trib of Short Brook	31	72	up 7%	100%
Stocksbridge CSO Overflow on sewer network Company site name STOCKSBRIDGE/CSO EA ID / permit YWS00695 · 3300(SS) Outlet location SK2905097790 (OS grid reference) · View on Apple Maps WFD catchment Don from Little Don to River Loxley confluence (GB104027057411) 2024 spills / hours 28 / 81 Long-term average 32.7 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 72 hours spilling →	River Don	19	72	down 32%	99%
Ellen House Road Overflow on sewer network Company site name ELLEN HOLME ROAD/CSO EA ID / permit YWS01308 · WADC906 Outlet location SE0397024400 (OS grid reference) · View on Apple Maps WFD catchment Calder from Colden Water to Ryburn Confluence (GB104027062641) 2024 spills / hours 28 / 200 Long-term average 43.0 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 72 hours spilling →	River Calder	7	72	down 75%	100%
Castleford STW Storm tank at sewage works Sewage works Castleford Company site name CASTLEFORD/STW EA ID / permit YWS01326 · WRA6659 Outlet location SE4464026680 (OS grid reference) · View on Apple Maps WFD catchment Aire from Wyke Beck to Fryston Beck (GB104027063036) 2024 spills / hours 19 / 42 Long-term average 58.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 72 hours spilling →	River Aire	23	72	up 21%	100%
Longbottom Bridge CSO Overflow on sewer network Company site name LONGBOTTOM BRIDGE/CSO EA ID / permit YWS02233 · YWUCD2/69 Outlet location SE0404024010 (OS grid reference) · View on Apple Maps WFD catchment Calder from Colden Water to Ryburn Confluence (GB104027062641) 2024 spills / hours 16 / 88 Long-term average 8.3 spills a year (monitored since 2023) Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 72 hours spilling →	River Calder	9	72	down 44%	100%
Church Lane Sewage Pumping Station Overflow on sewer network Company site name LINTON/CSO EA ID / permit YWS01311 · WADC92 Outlet location SE0030063200 (OS grid reference) · View on Apple Maps WFD catchment Wharfe from Park Gill Bk to Barben Beck/River Dibb (GB104027064253) Bathing water Wharfe at Cromwheel, Ilkley 2024 spills / hours 41 / 210 Long-term average 30.7 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed, Bathing Water and/or Shellfish Water investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 72 hours spilling →	River Wharfe	19	72	down 54%	97%
Applegarth Bridge CSO Overflow on sewer network Company site name APPLEGARTH BRIDGE/CSO EA ID / permit YWS00963 · EPRTP3825XL Outlet location SE3671594014 (OS grid reference) · View on Apple Maps WFD catchment Willow Beck Catchment (trib of Wiske) (GB104027069540) 2024 spills / hours 29 / 58 Long-term average 28.7 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 71 hours spilling →	Sun Beck	39	71	up 34%	100%
Yws Unknown Sites Default Storm discharge at pumping station Company site name TREETON/CSO EA ID / permit YWS00106 · 2250 Outlet location SK3889092820 (OS grid reference) · View on Apple Maps WFD catchment Rother, Doe Lea to Don (GB104027057772) 2024 spills / hours 19 / 57 Long-term average 22.7 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 71 hours spilling →	Tributary of the River Rother	17	71	down 11%	100%
Yorkshire Water Horsforth Transfer Overflow on sewer network Company site name HORSFORTH AGY/CSO EA ID / permit YWS00883 · C5440 Outlet location SE2456036980 (OS grid reference) · View on Apple Maps WFD catchment Carlton Beck from Source to River Aire (GB104027062920) 2024 spills / hours 47 / 77 Long-term average 47.2 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 71 hours spilling →	Cow Beck	37	71	down 21%	100%
Storforth Lane CSO Overflow on sewer network Company site name STORFORTH LANE/CSO EA ID / permit YWS01189 · WADC1396 Outlet location SK3876169284 (OS grid reference) · View on Apple Maps WFD catchment Rother from Redleadmill Brook to Spital Brook (GB104027057630) 2024 spills / hours 32 / 78 Long-term average 50.8 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 71 hours spilling →	River Rother	25	71	down 22%	99%
Bower Grn/Chestnut St/Myrtle St/ Overflow on sewer network Company site name MYRTLE STREET/CSO EA ID / permit YWS01699 · WRA8241 Outlet location SE1734032810 (OS grid reference) · View on Apple Maps WFD catchment Bradford Beck (Clayton Bk to R Aire) (GB104027062862) 2024 spills / hours 75 / 143 Long-term average 107.3 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 71 hours spilling →	East Brook (Culverted)	60	71	down 20%	100%
Rawcliffe Park NO3 SPS Overflow on sewer network Company site name RAWCLIFFE PARK/NO 3 CSO EA ID / permit YWS01945 · WRA8737 Outlet location SE6884022603 (OS grid reference) · View on Apple Maps WFD catchment Aire from River Calder to River Ouse (GB104027062760) 2024 spills / hours 15 / 53 Long-term average 18.3 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 71 hours spilling →	Dobeller Drain	20	71	up 33%	100%
Wigton Moor Sewage Pumping Station Overflow on sewer network Company site name ALWOODLEY/CSO EA ID / permit YWS00197 · 27/20/0066 Outlet location SE3180041350 (OS grid reference) · View on Apple Maps WFD catchment Stank Beck catchment (trib of Wharfe) (GB104027063960) 2024 spills / hours 37 / 120 Long-term average 34.3 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation ongoing, Bathing Water and/or Shellfish Water investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 71 hours spilling →	Sturdy Beck	24	71	down 35%	100%
Carr Vale No 2 SPS Storm discharge at pumping station Company site name CARR VALE/NO 2 CSO EA ID / permit YWS01456 · WRA7665 Outlet location SK4599069680 (OS grid reference) · View on Apple Maps WFD catchment Doe Lea from Source to Hawke Brook (GB104027057290) 2024 spills / hours 39 / 106 Long-term average 33.3 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 71 hours spilling →	River Doe Lea	25	71	down 36%	100%
Hornsea SPS Storm discharge at pumping station Company site name HORNSEA/CSO EA ID / permit YWS01482 · WRA7863 Outlet location TA2163047450 (OS grid reference) · View on Apple Maps WFD catchment Yorkshire South (GB640402491000) Bathing water Hornsea 2024 spills / hours 101 / 68 Long-term average 37.7 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 70 hours spilling →	North Sea	63	70	down 38%	100%
Southfield Avenue SPS Overflow on sewer network Company site name SOUTHFIELD AVENUE/CSO EA ID / permit YWS01470 · WRA7754 Outlet location SE4220419124 (OS grid reference) · View on Apple Maps WFD catchment Went from Source to Hoyle Mill Stream (GB104027063380) 2024 spills / hours 24 / 65 Long-term average 24.2 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 70 hours spilling →	Went Beck	20	70	down 17%	100%
Ebor Way CSO Overflow on sewer network Company site name EBOR WAY/CSO EA ID / permit YWS01086 · WA 5855 Outlet location SE4407345293 (OS grid reference) · View on Apple Maps WFD catchment Wharfe from Collingham Beck to Tadcaster Weir (GB104027064255) 2024 spills / hours 43 / 151 Long-term average 44.8 spills a year (monitored since 2020) Investigation UWWTR investigation completed, Operational investigation completed, Bathing Water and/or Shellfish Water investigation ongoing Improvement UWWTR improvement ongoing Volume & pollution Estimate from 70 hours spilling →	River Wharfe	26	70	down 40%	100%
Nesfield Close CSO Overflow on sewer network Company site name NESFIELD CLOSE/CSO EA ID / permit YWS01012 · NPSWQD005849 Outlet location TA0561783054 (OS grid reference) · View on Apple Maps WFD catchment Eastfield Drain Lower to River Hertford (GB104027073281) 2024 spills / hours 17 / 107 Long-term average 12.5 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 70 hours spilling →	Unnamed Drain Trib R.Hertford	13	70	down 24%	100%
Yws Unknown Sites Default Overflow on sewer network Company site name YEW TREE ESTATE/NO 1 CSO EA ID / permit YWS01066 · S/RD/132 Outlet location SK3454469679 (OS grid reference) · View on Apple Maps WFD catchment Hipper from Source to River Rother (GB104027057660) 2024 spills / hours 29 / 57 Long-term average 18.0 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 70 hours spilling →	River Hipper	25	70	down 14%	100%
Allerton Park CSO Overflow on sewer network Company site name ALLERTON PARK/CSO EA ID / permit YWS01529 · WRA7974 Outlet location SE3117337299 (OS grid reference) · View on Apple Maps WFD catchment Meanwood Beck from Source to River Aire (GB104027062900) 2024 spills / hours 47 / 79 Long-term average 40.8 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 69 hours spilling →	Gledhow Beck	39	69	down 17%	100%
Fir Cottage CSO Overflow on sewer network Company site name FIR COTTAGE/CSO EA ID / permit YWS01314 · WADC929 Outlet location SE2227319777 (OS grid reference) · View on Apple Maps WFD catchment Calder from River Colne to River Chald (GB104027062631) 2024 spills / hours 11 / 45 Long-term average 8.0 spills a year (monitored since 2020) Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 69 hours spilling →	River Calder	7	69	down 36%	100%
Wakefield Road 90 CSO Overflow on sewer network Company site name WAKEFIELD ROAD 90/CSO EA ID / permit YWS02183 · WRA9321 Outlet location SE0747723586 (OS grid reference) · View on Apple Maps WFD catchment Calder from Ryburn Confluence to River Colne (GB104027062642) 2024 spills / hours 64 / 108 Long-term average 56.8 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 69 hours spilling →	Calder+Hebble Navigation Canal	39	69	down 39%	95%
Slayleigh Lane CSO Overflow on sewer network Company site name SLAYLEIGH LANE/CSO EA ID / permit YWS00065 · 1885 Outlet location SK3083285104 (OS grid reference) · View on Apple Maps WFD catchment River Porter from Source to River Sheaf (GB104027057760) 2024 spills / hours 31 / 53 Long-term average 34.2 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - hydraulic capacity Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 69 hours spilling →	Porter Brook	32	69	up 3%	100%
Bridge Inn CSO Overflow on sewer network Company site name BRIDGE INN/CSO EA ID / permit YWS00617 · 27/29/0125 Outlet location NZ8898809113 (OS grid reference) · View on Apple Maps WFD catchment Esk from Sleddale Beck to Ruswarp (GB104027068150) 2024 spills / hours 41 / 189 Long-term average 39.8 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 69 hours spilling →	River Esk (Tidal)	29	69	down 29%	100%

Sewage treatment works

Storm tanks and inlet overflows at each Yorkshire 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.