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
Dogley CSO Overflow on sewer network Company site name DOGLEY/CSO EA ID / permit YWS02126 · WRA9237 Outlet location SE1869113780 (OS grid reference) · View on Apple Maps WFD catchment Fenay beck from Source to River Colne (GB104027063340) 2024 spills / hours 0 / 0.0 Long-term average 12.7 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period	Woodsome Beck	0	0.0	no change	100%
Kippax 80 CSO Overflow on sewer network Company site name KIPPAX 80/CSO EA ID / permit YWS02131 · WRA9243 Outlet location SE4112229937 (OS grid reference) · View on Apple Maps WFD catchment Lin Dike from Source to River Aire (GB104027062810) 2024 spills / hours 0 / 0.0 Long-term average 15.3 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period	Hollins Beck	0	0.0	no change	100%
Dronfield Lea Road CSO Overflow on sewer network Company site name DRONFIELD LEA ROAD/CSO EA ID / permit YWS02137 · WRA9250 Outlet location SK3542078380 (OS grid reference) · View on Apple Maps WFD catchment Drone from Source to River Whitting (GB104027057710) 2024 spills / hours 0 / 0.0 Long-term average 1.6 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period	River Drone	0	0.0	no change	100%
Darfield Doncaster Road CSO Overflow on sewer network Company site name DARFIELD DONCASTER RD/CSO EA ID / permit YWS02142 · WRA9256 Outlet location SE4230804575 (OS grid reference) · View on Apple Maps WFD catchment Dearne from Lundwood to River Dove (GB104027063172) 2024 spills / hours 0 / 0.0 Long-term average 0.0 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period	River Dearne	0	0.0	no change	93%
Mexborough East CSO Overflow on sewer network Company site name MEXBOROUGH EAST/CSO EA ID / permit YWS02145 · WRA9260 Outlet location SE4571002170 (OS grid reference) · View on Apple Maps WFD catchment River Dearne Darfield STW to River Don (GB104027063173) 2024 spills / hours 1 / 0.5 Long-term average 1.5 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period	River Dearne	0	0.0	down 100%	100%
Back Lane CSO Overflow on sewer network Company site name BACK LANE/CSO EA ID / permit YWS02148 · WRA9265 Outlet location SE2616611492 (OS grid reference) · View on Apple Maps WFD catchment Dearne from Source to Bentley Brook (GB104027063220) 2024 spills / hours 0 / 0.0 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	Clvrt Trib of Toad Hole Dike	0	0.0	no change	100%
Kirkbridge Lane CSO Overflow on sewer network Company site name KIRKBRIDGE LANE/CSO EA ID / permit YWS02156 · WRA9274 Outlet location SE1598009220 (OS grid reference) · View on Apple Maps WFD catchment New Mill Dike from Source to River Holme (GB104027057610) 2024 spills / hours 0 / 0.0 Long-term average 1.7 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period	New Mill Dike	0	0.0	no change	100%
Highbury Mount CSO Overflow on sewer network Company site name HIGHBURY MOUNT/CSO EA ID / permit YWS02160 · WRA9292 Outlet location SE2844036830 (OS grid reference) · View on Apple Maps WFD catchment Meanwood Beck from Source to River Aire (GB104027062900) 2024 spills / hours 0 / 0.0 Long-term average 0.0 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period	Meanwood Beck	0	0.0	no change	100%
Canal Street CSO Overflow on sewer network Company site name CANAL STREET ARMLEY/CSO EA ID / permit YWS02161 · WRA9293 Outlet location SE2883533475 (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 0.0 spills a year (monitored since 2020) Monitor below 90% Installation set-up/design issue · Resolved - February after reporting year Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period	River Aire	–	–		0%
Armley Road CSO Overflow on sewer network Company site name ARMLEY ROAD/CSO EA ID / permit YWS02162 · WRA9294 Outlet location SE2883033471 (OS grid reference) · View on Apple Maps WFD catchment Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035) 2024 spills / hours 2 / 0.5 Long-term average 1.3 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period	River Aire	0	0.0	down 100%	100%
Wolseley Road CSO Overflow on sewer network Company site name WOLSELEY ROAD/CSO EA ID / permit YWS02164 · WRA9296 Outlet location SE2775034121 (OS grid reference) · View on Apple Maps WFD catchment Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035) 2024 spills / hours 2 / 1.5 Long-term average 3.5 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period	River Aire	0	0.0	down 100%	100%
Cardigan Lane CSO Overflow on sewer network Company site name CARDIGAN LANE/CSO EA ID / permit YWS02165 · WRA9297 Outlet location SE2775034122 (OS grid reference) · View on Apple Maps WFD catchment Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035) 2024 spills / hours 1 / 0.3 Long-term average 3.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period	River Aire	0	0.0	down 100%	100%
Old George CSO Overflow on sewer network Company site name OLD GEORGE/CSO EA ID / permit YWS02177 · WRA9315 Outlet location SE3934332424 (OS grid reference) · View on Apple Maps WFD catchment Lin Dike from Source to River Aire (GB104027062810) 2024 spills / hours 7 / 6.8 Long-term average 2.2 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period	The Beck	0	0.0	down 100%	100%
Newlay Lane CSO Overflow on sewer network Company site name NEWLAY LANE/CSO EA ID / permit YWS02179 · WRA9317 Outlet location SE2386036941 (OS grid reference) · View on Apple Maps WFD catchment Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035) 2024 spills / hours 1 / 0.3 Long-term average 0.5 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period	River Aire	0	0.0	down 100%	100%
North Cliff Road CSO Overflow on sewer network Company site name NORTH CLIFF ROAD/CSO EA ID / permit YWS02180 · WRA9318 Outlet location SK5130099340 (OS grid reference) · View on Apple Maps WFD catchment Don from River Dearne to Mill Dyke (GB104027064242) 2024 spills / hours 2 / 26 Long-term average 0.5 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period	River Don	0	0.0	down 100%	100%
Rawcliffe SPS Storm discharge at pumping station Company site name CLIFTON HOSPITAL/CSO EA ID / permit YWS02194 · YWUCD1/78 Outlet location SE5821453350 (OS grid reference) · View on Apple Maps WFD catchment Ouse from River Nidd to Stillingfleet Beck (GB104027069593) 2024 spills / hours 1 / 0.8 Long-term average 1.0 spills a year (monitored since 2020) Investigation Operational investigation completed Improvement No improvement action in reporting period	Trib of River Ouse	0	0.0	down 100%	100%
Main Street CSO Overflow on sewer network Company site name DALTON MAIN STREET/CSO EA ID / permit YWS02198 · YWUCD2/105 Outlet location SE9684044986 (OS grid reference) · View on Apple Maps WFD catchment Scorborough Beck (GB104026066901) 2024 spills / hours – / – Long-term average 0.6 spills a year (monitored since 2020) Monitor below 90% Comms failure / issue · Resolved - Oct Investigation Operational investigation completed Improvement No improvement action in reporting period	Becks Drain	0	0.0		22%
Brotherton CSO Overflow on sewer network Company site name BROTHERTON CHURCH RD/CSO EA ID / permit YWS02203 · YWUCD2/12 Outlet location SE4824425309 (OS grid reference) · View on Apple Maps WFD catchment Aire from Wyke Beck to Fryston Beck (GB104027063036) 2024 spills / hours 1 / 0.3 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	River Aire	0	0.0	down 100%	100%
Town Farm 2 CSO Overflow on sewer network Company site name INNFOLD FARM 2/CSO EA ID / permit YWS02204 · YWUCD2/120 Outlet location SE2898513653 (OS grid reference) · View on Apple Maps WFD catchment Dearne from Bentley Brook to Cawthorne Dyke (GB104027063260) 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	Bretton Brook	0	0.0	no change	100%
Town Farm 4 SSO Overflow on sewer network Company site name INNFOLD FARM 4/CSO EA ID / permit YWS02205 · YWUCD2/122 Outlet location SE2894013677 (OS grid reference) · View on Apple Maps WFD catchment Dearne from Bentley Brook to Cawthorne Dyke (GB104027063260) 2024 spills / hours 2 / 3.3 Long-term average 4.5 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period	Tributary of Bretton Brook	0	0.0	down 100%	100%
Swan Inn CSO Overflow on sewer network Company site name SWAN INN RIDGEWAY/CSO EA ID / permit YWS02214 · YWUCD2/35 Outlet location SK4041581664 (OS grid reference) · View on Apple Maps WFD catchment The Moss from Source to River Rother (GB104027057720) 2024 spills / hours 0 / 0.0 Long-term average 0.3 spills a year (monitored since 2020) Investigation Operational investigation completed Improvement No improvement action in reporting period	Trib of the Moss	0	0.0	no change	97%
Kirby Misperton Lane SSO Overflow on sewer network Company site name MISPERTON LANE/CSO EA ID / permit YWS02220 · YWUCD2/47 Outlet location SE7582076190 (OS grid reference) · View on Apple Maps WFD catchment River Rye from River Seven to Costa Beck (GB104027068320) 2024 spills / hours 1 / 1.0 Long-term average 0.3 spills a year (monitored since 2020) Investigation Operational investigation completed Improvement No improvement action in reporting period	Habton Ings Drain	0	0.0	down 100%	99%
Woodhead Road CSO Overflow on sewer network Company site name HOLMBRIDGE MILL/CSO EA ID / permit YWS02223 · YWUCD2/55 Outlet location SE1206106706 (OS grid reference) · View on Apple Maps WFD catchment River Holme from Source to New Mill Dike (GB104027057600) 2024 spills / hours 0 / 0.0 Long-term average 0.0 spills a year (monitored since 2020) Monitor below 90% Comms failure / issue · Resolved - Aug Investigation Operational investigation completed Improvement No improvement action in reporting period	Digley Brook	0	0.0	no change	49%
Longroyd Bridge CSO Overflow on sewer network Company site name LONGROYD BRIDGE/CSO EA ID / permit YWS02226 · YWUCD2/60 Outlet location SE1354616069 (OS grid reference) · View on Apple Maps WFD catchment River Colne from Wessenden Brook to R Holme (GB104027063330) 2024 spills / hours 0 / 0.0 Long-term average 0.0 spills a year (monitored since 2020) Investigation Operational investigation completed Improvement No improvement action in reporting period	River Colne	0	0.0	no change	100%
Fearnville Place CSO Overflow on sewer network Company site name FEARNVILLE PL/NO 1 CSO EA ID / permit YWS02230 · YWUCD2/66 Outlet location SE3427235614 (OS grid reference) · View on Apple Maps WFD catchment Wyke Beck from Source to River Aire (GB104027062880) 2024 spills / hours 3 / 1.0 Long-term average 12.0 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	Wyke Beck	0	0.0	down 100%	100%
Northside CSO Overflow on sewer network Company site name NORTHSIDE BUSN PARK/CSO EA ID / permit YWS02232 · YWUCD2/68 Outlet location SE3062734782 (OS grid reference) · View on Apple Maps WFD catchment Meanwood Beck from Source to River Aire (GB104027062900) 2024 spills / hours 3 / 12 Long-term average 19.3 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	Sheepscar Beck	0	0.0	down 100%	100%
The Drive/Caldene Avenue CSO Overflow on sewer network Company site name THE DRIVE/CSO EA ID / permit YWS02234 · YWUCD2/71 Outlet location SE0112526086 (OS grid reference) · View on Apple Maps WFD catchment Calder from Colden Water to Ryburn Confluence (GB104027062641) 2024 spills / hours 0 / 0.0 Long-term average 1.7 spills a year (monitored since 2020) Investigation Operational investigation completed Improvement No improvement action in reporting period	River Calder	0	0.0	no change	100%
Dalton Lane CSO Overflow on sewer network Company site name DALTON PARVA/CSO EA ID / permit YWS02238 · YWUCD2/88 Outlet location SK4619793673 (OS grid reference) · View on Apple Maps WFD catchment Don from Greasborough Dyke to River Dearne (GB104027057452) 2024 spills / hours 5 / 16 Long-term average 1.0 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period	Dalton Brook	0	0.0	down 100%	93%
Royal Hotel CSO Overflow on sewer network Company site name ROYAL HOTEL/CSO EA ID / permit YWS02242 · EPRBB3996EY Outlet location NZ8986011368 (OS grid reference) · View on Apple Maps WFD catchment ESK (E) (GB510402703400) Bathing water Whitby 2024 spills / hours 4 / 6.0 Long-term average 2.5 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period	River Esk	0	0.0	down 100%	100%
Chapel Land Kilham CSO Overflow on sewer network Company site name CHAPEL LANE KILHAM/CSO EA ID / permit YWS02246 · EPRUP3127XA Outlet location TA0599264313 (OS grid reference) · View on Apple Maps WFD catchment Lowthorpe/Kelk/Foston Bks from Source to Frodingham Beck (GB104026067101) 2024 spills / hours 100 / 2,218 Long-term average 36.5 spills a year (monitored since 2022) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period	Trib of Lowthorpe Beck	0	0.0	down 100%	100%
Permit applied for Overflow on sewer network Company site name BAGLEY LANE 105/CSO EA ID / permit YWS02249 · Permit applied for Outlet location SE2229936309 (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 0.7 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period	Permit applied for	0	0.0	down 100%	99%
Permit applied for Overflow on sewer network Company site name BRACKENDALE/SPS EA ID / permit YWS02251 · Permit applied for Outlet location SE1690738874 (OS grid reference) · View on Apple Maps WFD catchment Aire (R Worth to Gill Beck) (GB104027063034) 2024 spills / hours 0 / 0.0 Long-term average 0.0 spills a year (monitored since 2023) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period	Permit applied for	0	0.0	no change	100%
Not matched in Ea Consents Database Overflow on sewer network Company site name HOLYWELL MANCH ROAD/CSO EA ID / permit YWS02255 · EPR/JB3498VV Outlet location SE0955914336 (OS grid reference) · View on Apple Maps WFD catchment River Colne from Wessenden Brook to R Holme (GB104027063330) 2024 spills / hours 0 / 0.0 Long-term average 0.0 spills a year (monitored since 2023) Monitor below 90% Comms failure / issue · Resolved - Apr Investigation No investigation activity in reporting period Improvement No improvement action in reporting period	Not matched in Ea Consents Database	0	0.0	no change	72%
Permit applied for Overflow on sewer network Company site name RAWMARSH HILL/CSO EA ID / permit YWS02262 · Permit applied for Outlet location SK4351894984 (OS grid reference) · View on Apple Maps WFD catchment Don from Greasborough Dyke to River Dearne (GB104027057452) 2024 spills / hours 0 / 0.0 Long-term average 0.3 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period	Permit applied for	0	0.0	no change	100%
Permit applied for Overflow on sewer network Company site name WESTBURY GROVE/CSO EA ID / permit YWS02269 · Permit applied for Outlet location SE3216131221 (OS grid reference) · View on Apple Maps WFD catchment Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035) 2024 spills / hours 1 / 0.3 Long-term average 0.3 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period	Permit applied for	0	0.0	down 100%	100%
Not matched in Ea Consents Database Overflow on sewer network Company site name WILMINGTON STREET/CSO EA ID / permit YWS02281 · EPR/JB3594WF Outlet location SE3054634994 (OS grid reference) · View on Apple Maps WFD catchment Meanwood Beck from Source to River Aire (GB104027062900) 2024 spills / hours 1 / 0.8 Long-term average 0.3 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period	Not matched in Ea Consents Database	0	0.0	down 100%	95%
Permit applied for Overflow on sewer network Company site name KERESFORTH ROAD 24/CSO EA ID / permit YWS02284 · Permit applied for Outlet location SE3202504832 (OS grid reference) · View on Apple Maps WFD catchment Dodworth Dyke from Source to River Dove (GB104027057520) 2024 spills / hours 2 / 2.5 Long-term average 1.0 spills a year (monitored since 2023) Monitor below 90% Comms failure / issue · Resolved - Mar Investigation No investigation activity in reporting period Improvement No improvement action in reporting period	Permit applied for	0	0.0	down 100%	87%

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.