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
Adwick Road CSO Overflow on sewer network Company site name ADWICK ROAD/CSO EA ID / permit YWS01071 · EPRYB3292RF Outlet location SE4908401345 (OS grid reference) · View on Apple Maps WFD catchment River Dearne Darfield STW to River Don (GB104027063173) 2024 spills / hours 6 / 2.0 Long-term average 7.2 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 1.0 hours spilling →	River Dearne	3	1.0	down 50%	100%
Spring Bank Road CSO Overflow on sewer network Company site name SPRING BANK ROAD/CSO EA ID / permit YWS01269 · WADC635 Outlet location SK3758971356 (OS grid reference) · View on Apple Maps WFD catchment Holme Brook/Linacre Beck (GB104027057670) 2024 spills / hours 1 / 0.3 Long-term average 4.5 spills a year (monitored since 2020) Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 1.0 hours spilling →	Holme Brook	4	1.0	up 300%	100%
Hird Street No 2 CSO Overflow on sewer network Company site name HIRD STREET/NO 2 CSO EA ID / permit YWS01802 · WRA8483 Outlet location SE1468737916 (OS grid reference) · View on Apple Maps WFD catchment Aire (R Worth to Gill Beck) (GB104027063034) 2024 spills / hours 1 / 1.3 Long-term average 2.5 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 1.0 hours spilling →	Tributary of the River Aire	4	1.0	up 300%	92%
Gawthorpe Main Street CSO Overflow on sewer network Company site name GAWTHORPE MAIN ST/CSO EA ID / permit YWS01865 · WRA8578 Outlet location SE2766222211 (OS grid reference) · View on Apple Maps WFD catchment River Chald from Source to River Calder (GB104027062620) 2024 spills / hours 3 / 0.8 Long-term average 3.0 spills a year (monitored since 2020) Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 1.0 hours spilling →	Tributary of Bushy Beck	3	1.0	no change	100%
Delves Road No 2 CSO Overflow on sewer network Company site name DELVES ROAD/NO 2 CSO EA ID / permit YWS01940 · WRA8729 Outlet location SK4238883965 (OS grid reference) · View on Apple Maps WFD catchment Shire Brook (GB104027057773) 2024 spills / hours 3 / 1.8 Long-term average 7.5 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 1.0 hours spilling →	Shire Brook	4	1.0	up 33%	100%
Flanshaw Lane CSO Overflow on sewer network Company site name FLANSHAW LANE/CSO EA ID / permit YWS02097 · WRA9203 Outlet location SE3100021350 (OS grid reference) · View on Apple Maps WFD catchment River Chald from Source to River Calder (GB104027062620) 2024 spills / hours 8 / 4.3 Long-term average 6.7 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 1.0 hours spilling →	Alverthorpe Beck	4	1.0	down 50%	100%
Crow Lane Memorial CSO Overflow on sewer network Company site name CROW LANE MEMORIAL/CSO EA ID / permit YWS02107 · WRA9213 Outlet location SK3743877262 (OS grid reference) · View on Apple Maps WFD catchment Drone from Source to River Whitting (GB104027057710) 2024 spills / hours 4 / 3.3 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 1.0 hours spilling →	River Drone	4	1.0	no change	100%
Barnsley Road CSO Overflow on sewer network Company site name BARNSLEY ROAD 248/CSO EA ID / permit YWS02240 · YWUCD2/97 Outlet location SK3612392668 (OS grid reference) · View on Apple Maps WFD catchment Blackburn Brook from Source to River Don (GB104027057440) 2024 spills / hours 5 / 2.0 Long-term average 7.0 spills a year (monitored since 2020) Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 1.0 hours spilling →	Sheffield Lane Dike	3	1.0	down 40%	100%
Broadlea Hill CSO Overflow on sewer network Company site name BROADLEA HILL/CSO EA ID / permit YWS01870 · WRA8584 Outlet location SE2533035968 (OS grid reference) · View on Apple Maps WFD catchment Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035) 2024 spills / hours 0 / 0.0 Long-term average 0.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	Tributary of the River Aire	1	0.8	up from 0	93%
Saddleworth Road CSO Overflow on sewer network Company site name SADDLEWORTH ROAD/CSO EA ID / permit YWS00151 · EPRSB3590RG Outlet location SE0857420785 (OS grid reference) · View on Apple Maps WFD catchment Black Brook from Source to River Calder (GB104027062570) 2024 spills / hours 37 / 130 Long-term average 20.7 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	Black Brook	1	0.8	down 97%	99%
Permit applied for Inlet overflow at sewage works Sewage works Permit Applied For Company site name APPLETON LE MOOR/STW EA ID / permit YWS00167 · Permit applied for Outlet location SE7350087400 (OS grid reference) · View on Apple Maps WFD catchment Catter Beck/Hutton Beck from source to River Seven (GB104027068550) 2024 spills / hours 4 / 3.5 Long-term average 8.3 spills a year (monitored since 2020) Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	Permit applied for	3	0.8	down 25%	100%
Harrogate Hydro Csos Overflow on sewer network Company site name KINGS ROAD/CSO EA ID / permit YWS00263 · 27/21/0216 Outlet location SE2995055220 (OS grid reference) · View on Apple Maps WFD catchment Oak Beck Catchment (Trib of Nidd) (GB104027063760) 2024 spills / hours 3 / 0.8 Long-term average 1.5 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed, Bathing Water and/or Shellfish Water investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	Oak Beck and Coppice Beck	1	0.8	down 67%	100%
Harrogate Hydro Csos Overflow on sewer network Company site name CHUDLEIGH ROAD/CSO EA ID / permit YWS00265 · 27/21/0216 Outlet location SE3039055650 (OS grid reference) · View on Apple Maps WFD catchment Oak Beck Catchment (Trib of Nidd) (GB104027063760) 2024 spills / hours 13 / 5.3 Long-term average 6.0 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed, Bathing Water and/or Shellfish Water investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	Oak Beck and Coppice Beck	2	0.8	down 85%	95%
Pocklington Airfield SPS Storm discharge at pumping station Company site name POCKLINGTON AIRFIELD/CSO EA ID / permit YWS00554 · 27/28/0114 Outlet location SE7855048170 (OS grid reference) · View on Apple Maps WFD catchment Pocklington Beck from Bielby Bk to River Derwent (GB104027063440) 2024 spills / hours 1 / 0.8 Long-term average 6.0 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	Trib of Stone Beck	1	0.8	no change	100%
Boulby Bank CSO Overflow on sewer network Company site name BOULBY BANK/CSO EA ID / permit YWS00596 · 27/29/0075 Outlet location NZ9012410808 (OS grid reference) · View on Apple Maps WFD catchment ESK (E) (GB510402703400) 2024 spills / hours 1 / 0.3 Long-term average 0.5 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	River Esk Tidal	1	0.8	no change	99%
Packhorse Lane CSO Overflow on sewer network Company site name PACKHORSE LANE/CSO EA ID / permit YWS01020 · NPSWQD008685 Outlet location SK3466197826 (OS grid reference) · View on Apple Maps WFD catchment Blackburn Brook from Source to River Don (GB104027057440) 2024 spills / hours 2 / 1.5 Long-term average 8.5 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	Blackburn Brook	1	0.8	down 50%	100%
Yws Unknown Sites Default Overflow on sewer network Company site name BECKETT NOOK/NO 2 CSO EA ID / permit YWS01061 · S/CB/48 Outlet location SE2280021380 (OS grid reference) · View on Apple Maps WFD catchment Spen Beck from Source to River Calder (GB104027062710) 2024 spills / hours 3 / 1.3 Long-term average 3.8 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	Varies With Outlet	2	0.8	down 33%	100%
Not matched in Ea Consents Database Overflow on sewer network Company site name RUSKIN AVENUE/CSO EA ID / permit YWS01072 · S/UD/121 Outlet location SE4908401345 (OS grid reference) · View on Apple Maps WFD catchment River Dearne Darfield STW to River Don (GB104027063173) 2024 spills / hours 6 / 1.8 Long-term average 9.0 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	Not matched in Ea Consents Database	3	0.8	down 50%	100%
Whitehall Road CSO Overflow on sewer network Company site name WHITEHALL ROAD/CSO EA ID / permit YWS01108 · WA6376 Outlet location SE1869526331 (OS grid reference) · View on Apple Maps WFD catchment Spen Beck from Source to River Calder (GB104027062710) 2024 spills / hours 1 / 0.5 Long-term average 1.5 spills a year (monitored since 2020) Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	River Spen	3	0.8	up 200%	100%
Midgeley Road CSO Overflow on sewer network Company site name MIDGELEY ROAD/CSO EA ID / permit YWS01150 · WADC1136 Outlet location SE0140926075 (OS grid reference) · View on Apple Maps WFD catchment Calder from Colden Water to Ryburn Confluence (GB104027062641) 2024 spills / hours 3 / 1.3 Long-term average 3.3 spills a year (monitored since 2020) Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	Culverted White Lee Clough	3	0.8	no change	100%
Mill Hill Lane SSO Storm discharge at pumping station Company site name MILL HILL LANE/CSO EA ID / permit YWS01151 · WADC1137 Outlet location SE3731093080 (OS grid reference) · View on Apple Maps WFD catchment Otterington Beck catchment (trib of Wiske) (GB104027069450) 2024 spills / hours 0 / 0.0 Long-term average 1.2 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	Trib of River Wiske	1	0.8	up from 0	100%
Stairfoot SPS Storm discharge at pumping station Company site name STAIRFOOT/SPS EA ID / permit YWS01253 · WADC417 Outlet location SE3783004800 (OS grid reference) · View on Apple Maps WFD catchment Dove from Source to River Dearne (GB104027057510) 2024 spills / hours 2 / 2.5 Long-term average 8.3 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	River Dove	2	0.8	no change	100%
Aberford Road SSO Overflow on sewer network Company site name ABERFORD ROAD 87/CSO EA ID / permit YWS01271 · WADC658 Outlet location SE4025837362 (OS grid reference) · View on Apple Maps WFD catchment Cock Beck Catchment (trib of Wharfe) (GB104027063940) 2024 spills / hours 6 / 2.0 Long-term average 2.2 spills a year (monitored since 2020) Monitor below 90% Comms failure / issue · Resolved - Apr Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	Trib of Cock Beck	3	0.8	down 50%	79%
Briggate No 2 CSO Overflow on sewer network Company site name BRIGGATE/NO 2 CSO EA ID / permit YWS01574 · WRA8090 Outlet location SE3028333192 (OS grid reference) · View on Apple Maps WFD catchment Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035) 2024 spills / hours 2 / 0.8 Long-term average 2.8 spills a year (monitored since 2020) Monitor below 90% Comms failure / issue · Resolved - Jul Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	River Aire	3	0.8	up 50%	89%
Hammerton Street 256 No 2 CSO Overflow on sewer network Company site name HAMMERTON ST 256/2 CSO EA ID / permit YWS01678 · WRA8217 Outlet location SE1719332828 (OS grid reference) · View on Apple Maps WFD catchment Bradford Beck (Clayton Bk to R Aire) (GB104027062862) 2024 spills / hours 6 / 5.5 Long-term average 5.6 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	East Brook (Culverted)	2	0.8	down 67%	100%
Derwent Road No 2 CSO Overflow on sewer network Company site name DERWENT ROAD/NO 2 CSO EA ID / permit YWS01868 · WRA8582 Outlet location SE3150020900 (OS grid reference) · View on Apple Maps WFD catchment River Chald from Source to River Calder (GB104027062620) 2024 spills / hours 6 / 3.5 Long-term average 6.7 spills a year (monitored since 2020) Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	Alverthorpe Beck	3	0.8	down 50%	100%
Lambert Road, Kendray CSO Overflow on sewer network Company site name LAMBERT ROAD/CSO EA ID / permit YWS01920 · WRA8688 Outlet location SE3726006320 (OS grid reference) · View on Apple Maps WFD catchment River Dearne from Cawthorne Dyke to Lundwood STW (GB104027063171) 2024 spills / hours 1 / 0.3 Long-term average 4.2 spills a year (monitored since 2020) Monitor below 90% Comms failure / issue · Resolved - Jul Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	Tributary of the River Dearne	2	0.8	up 100%	87%
Leeds West Park CSO Overflow on sewer network Company site name LEEDS WEST PARK/NO 2 CSO EA ID / permit YWS01987 · WRA8896 Outlet location SE2593038110 (OS grid reference) · View on Apple Maps WFD catchment Carlton Beck from Source to River Aire (GB104027062920) 2024 spills / hours 5 / 3.5 Long-term average 16.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	Culverted Trib of Oil Mill Bck	2	0.8	down 60%	100%
Rudyard Road CSO Overflow on sewer network Company site name RUDYARD ROAD/CSO EA ID / permit YWS02031 · WRA9134 Outlet location SK3331089618 (OS grid reference) · View on Apple Maps WFD catchment Loxley from Strines Dyke to River Don (GB104027057370) 2024 spills / hours 2 / 0.5 Long-term average 2.8 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	River Loxley	3	0.8	up 50%	100%
Foundry Mill CSO Overflow on sewer network Company site name FOUNDRY MILL STREET/CSO EA ID / permit YWS02039 · WRA9143 Outlet location SE3422035220 (OS grid reference) · View on Apple Maps WFD catchment Wyke Beck from Source to River Aire (GB104027062880) 2024 spills / hours 4 / 2.0 Long-term average 2.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	Wyke Beck	2	0.8	down 50%	100%
Oak Road CSO Overflow on sewer network Company site name OAK ROAD/CSO EA ID / permit YWS02182 · WRA9320 Outlet location SE1717820400 (OS grid reference) · View on Apple Maps WFD catchment Calder from Ryburn Confluence to River Colne (GB104027062642) 2024 spills / hours 57 / 206 Long-term average 79.3 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	Trib of Huddersfield Broad Can	2	0.8	down 96%	100%
Thornhill Park Avenue CSO Overflow on sewer network Company site name LOCK STREET/CSO EA ID / permit YWS02212 · YWUCD2/30 Outlet location SE2508719787 (OS grid reference) · View on Apple Maps WFD catchment Calder from River Colne to River Chald (GB104027062631) 2024 spills / hours 2 / 3.5 Long-term average 1.3 spills a year (monitored since 2020) Monitor below 90% Sensor failure / issue · Resolved - May Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	River Calder	1	0.8	down 50%	89%
Regent Street Overflow on sewer network Company site name REGENT ST BARNSLEY/CSO EA ID / permit YWS02217 · YWUCD2/4 Outlet location SE3483206906 (OS grid reference) · View on Apple Maps WFD catchment River Dearne from Cawthorne Dyke to Lundwood STW (GB104027063171) 2024 spills / hours 1 / 0.3 Long-term average 2.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	Trib of River Dearne	3	0.8	up 200%	100%
Permit applied for Overflow on sewer network Company site name PEASHOLME GREEN/CSO EA ID / permit YWS02260 · Permit applied for Outlet location SE6084452079 (OS grid reference) · View on Apple Maps WFD catchment River Foss from the Syke to the River Ouse (GB104027063520) 2024 spills / hours 1 / 0.5 Long-term average 0.7 spills a year (monitored since 2023) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	Permit applied for	1	0.8	no change	100%
Not matched in Ea Consents Database Overflow on sewer network Company site name SENIOR ROAD/CSO EA ID / permit YWS02271 · EPR/JB3498WW Outlet location SK3944587846 (OS grid reference) · View on Apple Maps WFD catchment Car Brook from Source to River Don (GB104027057360) 2024 spills / hours 2 / 0.5 Long-term average 2.3 spills a year (monitored since 2023) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.8 hours spilling →	Not matched in Ea Consents Database	3	0.8	up 50%	100%
Welham Road South CSO Overflow on sewer network Company site name WELHAM ROAD SOUTH/CSO EA ID / permit YWS00535 · 27/27/0132 Outlet location SE7905771103 (OS grid reference) · View on Apple Maps WFD catchment Derwent from River Rye to Kirkham (GB104027068313) 2024 spills / hours 8 / 4.0 Long-term average 3.8 spills a year (monitored since 2020) Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.7 hours spilling →	Mill Beck	2	0.7	down 75%	100%
Cleveland Avenue SSO Overflow on sewer network Company site name CLEVELAND AVENUE/CSO EA ID / permit YWS01302 · WADC835 Outlet location TA0295089850 (OS grid reference) · View on Apple Maps WFD catchment Burniston Beck/Sea Cut/Scalby Beck Catch to N Sea (GB104027067980) Bathing water Scarborough North Bay 2024 spills / hours 3 / 1.0 Long-term average 4.7 spills a year (monitored since 2020) Monitor below 90% Comms failure / issue · Resolved - Mar Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.6 hours spilling →	Trib to Foul Sewer	3	0.6	no change	76%
Yws Unknown Sites Default Overflow on sewer network Company site name WADLANDS CLOSE/CSO EA ID / permit YWS00154 · 2516 Outlet location SE2155035560 (OS grid reference) · View on Apple Maps WFD catchment Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035) 2024 spills / hours 3 / 1.3 Long-term average 1.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Trib of Bagley Beck	2	0.5	down 33%	100%
Harrogate Hydro Csos Overflow on sewer network Company site name WEST PARK/CSO EA ID / permit YWS00267 · 27/21/0216 Outlet location SE2995055240 (OS grid reference) · View on Apple Maps WFD catchment Oak Beck Catchment (Trib of Nidd) (GB104027063760) 2024 spills / hours 6 / 2.5 Long-term average 4.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed, Bathing Water and/or Shellfish Water investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Oak Beck and Coppice Beck	2	0.5	down 67%	100%
Gale Lane CSO Overflow on sewer network Company site name GALE LANE/NO 1 CSO EA ID / permit YWS00494 · 27/25/0121 Outlet location SE6570084010 (OS grid reference) · View on Apple Maps WFD catchment Walmouth Beck from Source to River Riccal (GB104027068210) 2024 spills / hours 18 / 80 Long-term average 6.7 spills a year (monitored since 2023) Monitor below 90% Sensor failure / issue · Resolved - Jan Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Syke Cut via A Public Sewer	1	0.5	down 94%	84%
Stone Bridge No 2 CSO Overflow on sewer network Company site name STONE BRIDGE/NO 2 CSO EA ID / permit YWS00541 · 27/27/0143 Outlet location SE8362083082 (OS grid reference) · View on Apple Maps WFD catchment Thornton/Dalby/Staindale from Source to the Syme (GB104027067950) 2024 spills / hours 27 / 98 Long-term average 9.5 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Thornton Beck	2	0.5	down 93%	100%
Batley Grange Road CSO Overflow on sewer network Company site name BATLEY GRANGE ROAD/CSO EA ID / permit YWS00638 · 2844 Outlet location SE2500923615 (OS grid reference) · View on Apple Maps WFD catchment Batley Beck from Source to River Calder (GB104027062670) 2024 spills / hours 1 / 0.3 Long-term average 0.7 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Greenhill Dike Culverted	2	0.5	up 100%	96%
Wheel Lane CSO Overflow on sewer network Company site name WHEEL LANE/CSO EA ID / permit YWS00663 · 3096 Outlet location SK3437893971 (OS grid reference) · View on Apple Maps WFD catchment Blackburn Brook from Source to River Don (GB104027057440) 2024 spills / hours 16 / 13 Long-term average 12.3 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Trib Blackburn Brook	2	0.5	down 88%	100%
Finch Park CSO Overflow on sewer network Company site name FINCH PARK/CSO EA ID / permit YWS00664 · 3105 Outlet location TA0273041260 (OS grid reference) · View on Apple Maps WFD catchment Beverley and Barmston Drain (GB104026067211) 2024 spills / hours 5 / 1.3 Long-term average 4.0 spills a year (monitored since 2023) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Pighill Lane Sewer (Drain)	2	0.5	down 60%	100%
Sedburgh Road CSO Overflow on sewer network Company site name SEDBURGH ROAD/CSO EA ID / permit YWS00761 · 3779 Outlet location SE0974024240 (OS grid reference) · View on Apple Maps WFD catchment Hebble Brook from Source to River Calder (GB104027062780) 2024 spills / hours 2 / 0.8 Long-term average 22.5 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Hebble Brook	2	0.5	no change	100%
Gleadless Road Heeley Overflow on sewer network Company site name GLEADLESS ROAD HEELEY/CSO EA ID / permit YWS00934 · EPRCB3597RU Outlet location SK3527085193 (OS grid reference) · View on Apple Maps WFD catchment River Sheaf from Source to River Porter (GB104027057750) 2024 spills / hours 2 / 0.5 Long-term average 2.0 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	River Sheaf	2	0.5	no change	100%
Broadway Station CSO Storm discharge at pumping station Company site name BROADWAY 374/CSO EA ID / permit YWS00949 · EPREP3225GG Outlet location SE6499012610 (OS grid reference) · View on Apple Maps WFD catchment Don from Mill Dyke to River Ouse (GB104027064243) 2024 spills / hours 1 / 0.5 Long-term average 40.0 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	River Don	1	0.5	no change	100%
Alandale Road Bradley CSO Overflow on sewer network Company site name ALANDALE ROAD BRADLEY/CSO EA ID / permit YWS00958 · EPRTP3823KH Outlet location SE1638420521 (OS grid reference) · View on Apple Maps WFD catchment River Colne from River Holme to River Calder (GB104027062550) 2024 spills / hours 0 / 0.0 Long-term average 2.7 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Tributary of the River Colne	2	0.5	up from 0	100%
Station Rd Baildon No.2 CSO Overflow on sewer network Company site name STATION RD BAILDON/2 CSO EA ID / permit YWS01007 · NPSWQD005364 Outlet location SE1556039230 (OS grid reference) · View on Apple Maps WFD catchment Aire (R Worth to Gill Beck) (GB104027063034) 2024 spills / hours 6 / 3.0 Long-term average 6.3 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Barnsley Beck (Culverted)	2	0.5	down 67%	100%
Woodhouse Sewer Network - 3 Csos Overflow on sewer network Company site name BADGER DRIVE/CSO EA ID / permit YWS01058 · S/CB/132 Outlet location SK4244985424 (OS grid reference) · View on Apple Maps WFD catchment Rother, Doe Lea to Don (GB104027057772) 2024 spills / hours 4 / 1.5 Long-term average 4.8 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Shirtcliff Brook	1	0.5	down 75%	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.