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

025k50k75k100kJan 2025: 83,826 hours spillingJanFeb 2025: 5,531 hours spillingFebMar 2025: 3,935 hours spillingMarApr 2025: 545 hours spillingAprMay 2025: 1,606 hours spillingMayJun 2025: 1,734 hours spillingJunJul 2025: 7,048 hours spillingJulAug 2025: 729 hours spillingAugSep 2025: 20,226 hours spillingSepOct 2025: 12,651 hours spillingOctNov 2025: 64,756 hours spillingNovDec 2025: 83,310 hours spillingDec
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.

OverflowDischarges toSpills 2025Hours 2025Spills vs 2024Monitor uptime
Watersmeet Road NO1 CSO
Overflow on sewer network
Company site name
WATERSMEET ROAD/NO 1 CSO
EA ID / permit
YWS00676 · 318
Outlet location
SK3266089308 (OS grid reference) · View on Apple Maps
WFD catchment
Loxley from Strines Dyke to River Don (GB104027057370)
2024 spills / hours
53 / 128
Long-term average
48.5 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 104 hours spilling →
River Loxley 47 104 down 11% 100%
Stairfoot Grange CSO
Overflow on sewer network
Company site name
STAIRFOOT GRANGE/CSO
EA ID / permit
YWS02171 · WRA9305
Outlet location
SE3726206236 (OS grid reference) · View on Apple Maps
WFD catchment
River Dearne from Cawthorne Dyke to Lundwood STW (GB104027063171)
2024 spills / hours
58 / 163
Long-term average
48.5 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Resolved - Jun
Investigation
Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 104 hours spilling →
Clvrt Trib River Dearne 30 104 down 48% 74%
Woolley STW
Storm tank at sewage works
Sewage works
Woolley
Company site name
WOOLLEY VILLAGE/STW/3XDWF OVERFLOW
EA ID / permit
YWS00628 · 2776
Outlet location
SE3270013700 (OS grid reference) · View on Apple Maps
WFD catchment
Owler Beck from Source to River Calder (GB104027062530)
2024 spills / hours
88 / 872
Long-term average
96.4 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 104 hours spilling →
Totty Beck 54 104 down 39% 100%
SSO at Junction of Ashgate Road and
Overflow on sewer network
Company site name
ASHGATE ROAD/CSO
EA ID / permit
YWS00684 · 3243
Outlet location
SK3707071490 (OS grid reference) · View on Apple Maps
WFD catchment
Holme Brook/Linacre Beck (GB104027057670)
2024 spills / hours
70 / 158
Long-term average
57.3 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 104 hours spilling →
Holme Brook 45 104 down 36% 100%
Hoyle Mill Lane SPS
Overflow on sewer network
Company site name
HOYLE MILL LANE/CSO
EA ID / permit
YWS01465 · WRA7707
Outlet location
SE4226514425 (OS grid reference) · View on Apple Maps
WFD catchment
Hoyle Mill Stream from Source to River Went (GB104027063320)
2024 spills / hours
28 / 109
Long-term average
27.5 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 104 hours spilling →
Trib of Hoyle Mill Beck 19 104 down 32% 100%
Scalby Ness Outfall
Overflow on sewer network
Company site name
SCALBY MILLS/CSO
EA ID / permit
YWS00513 · 27/27/0055
Outlet location
TA0470091640 (OS grid reference) · View on Apple Maps
WFD catchment
Yorkshire North (GB650401500004)
Bathing water
Scarborough North Bay
2024 spills / hours
54 / 95
Long-term average
52.3 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 103 hours spilling →
North Sea 49 103 down 9% 100%
Poppleton Road South 2 CSO
Overflow on sewer network
Company site name
POPPLETON RD SOUTH/2 CSO
EA ID / permit
YWS00418 · 27/24/0264
Outlet location
SE5871251555 (OS grid reference) · View on Apple Maps
WFD catchment
Holgate Beck to Ouse (GB104027064001)
2024 spills / hours
65 / 516
Long-term average
56.5 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 103 hours spilling →
Holgate Beck 38 103 down 42% 100%
Ravenscar Sewage Treatment Works
Inlet overflow at sewage works
Sewage works
Ravenscar
Company site name
RAVENSCAR/STW
EA ID / permit
YWS00507 · 27/26/0036
Outlet location
NZ9843101770 (OS grid reference) · View on Apple Maps
WFD catchment
Esk & Yorkshire Coast Ravenscar (GB40402G702300)
2024 spills / hours
41 / 269
Long-term average
37.0 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 103 hours spilling →
Land 31 103 down 24% 100%
Montague Street CSO
Overflow on sewer network
Company site name
MONTAGUE STREET/CSO
EA ID / permit
YWS00775 · 3829
Outlet location
SE3475018964 (OS grid reference) · View on Apple Maps
WFD catchment
Oakenshaw Beck from Source to River Calder (GB104027062560)
2024 spills / hours
20 / 60
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 103 hours spilling →
Oakenshaw Beck 19 103 down 5% 100%
Holgate Road No.2 CSO
Overflow on sewer network
Company site name
HOLGATE ROAD/NO 2 CSO
EA ID / permit
YWS00421 · 27/24/0288
Outlet location
SE5880051312 (OS grid reference) · View on Apple Maps
WFD catchment
Holgate Beck to Ouse (GB104027064001)
2024 spills / hours
64 / 522
Long-term average
41.7 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 103 hours spilling →
Holgate Beck 34 103 down 47% 100%
Green Lane 125 CSO
Overflow on sewer network
Company site name
GREEN LANE 125/CSO
EA ID / permit
YWS02133 · WRA9245
Outlet location
SE1446138146 (OS grid reference) · View on Apple Maps
WFD catchment
Aire (R Worth to Gill Beck) (GB104027063034)
2024 spills / hours
69 / 227
Long-term average
68.0 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
Operational improvement completed
Volume & pollution
Estimate from 102 hours spilling →
River Aire 50 102 down 28% 100%
Cobcar Lane CSO
Overflow on sewer network
Company site name
COBCAR LANE/CSO
EA ID / permit
YWS01740 · WRA8385
Outlet location
SE3830100795 (OS grid reference) · View on Apple Maps
WFD catchment
Knoll Beck from Source to River Dearne (GB104027057470)
2024 spills / hours
45 / 101
Long-term average
47.3 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 102 hours spilling →
Jump Valley Stream 34 102 down 24% 100%
Carnaby (Village) SPS
Storm discharge at pumping station
Company site name
CARNABY MOOR LANE/CSO
EA ID / permit
YWS01959 · WRA8753
Outlet location
TA1565364290 (OS grid reference) · View on Apple Maps
WFD catchment
Auburn Beck from Source to North Sea (GB104026066650)
Bathing water
Wilsthorpe
2024 spills / hours
11 / 96
Long-term average
6.8 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 101 hours spilling →
Auburn Beck 12 101 up 9% 100%
Old Earswick SPS
Overflow on sewer network
Company site name
EARSWICK WILLOW GROVE/CSO
EA ID / permit
YWS01237 · WADC325
Outlet location
SE6220057200 (OS grid reference) · View on Apple Maps
WFD catchment
River Foss from the Syke to the River Ouse (GB104027063520)
2024 spills / hours
31 / 222
Long-term average
17.7 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 101 hours spilling →
River Foss 20 101 down 35% 100%
Clock Tower CSO
Overflow on sewer network
Company site name
CLOCK TOWER/CSO
EA ID / permit
YWS00708 · 3368(SS)
Outlet location
SE3196571946 (OS grid reference) · View on Apple Maps
WFD catchment
Ure from Thornton Steward Beck to River Skell (GB104027069461)
2024 spills / hours
35 / 138
Long-term average
64.8 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Monitor below 90%
Sensor failure / issue · Resolved - Apr
Investigation
UWWTR investigation ongoing
Improvement
Operational improvement completed
Volume & pollution
Estimate from 100 hours spilling →
River Ure 43 100 up 23% 75%
Permit applied for
Overflow on sewer network
Company site name
MILTON ROAD/CSO
EA ID / permit
YWS02264 · Permit applied for
Outlet location
SE2139723034 (OS grid reference) · View on Apple Maps
WFD catchment
Spen Beck from Source to River Calder (GB104027062710)
2024 spills / hours
33 / 102
Long-term average
29.0 spills a year (monitored since 2023)
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 100 hours spilling →
Permit applied for 31 100 down 6% 100%
Dawsons Corner CSO
Overflow on sewer network
Company site name
DAWSONS CORNER/CSO
EA ID / permit
YWS00119 · 2314
Outlet location
SE2094334467 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
48 / 129
Long-term average
44.2 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Monitor below 90%
Comms failure / issue · Resolved - Aug
Investigation
Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 100 hours spilling →
Tributary of Bagley Beck 48 100 no change 62%
Paddock Foot CSO
Overflow on sewer network
Company site name
PADDOCK FOOT/CSO
EA ID / permit
YWS00625 · 2773
Outlet location
SE1336516131 (OS grid reference) · View on Apple Maps
WFD catchment
River Colne from Wessenden Brook to R Holme (GB104027063330)
2024 spills / hours
57 / 97
Long-term average
58.5 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 100 hours spilling →
Culverted Trib of River Colne 48 100 down 16% 100%
Moor Lane Moorends SPS
Storm discharge at pumping station
Company site name
MOOR LANE MOORENDS/CSO
EA ID / permit
YWS01080 · T/83/10162/O
Outlet location
SE6963014830 (OS grid reference) · View on Apple Maps
WFD catchment
North Soak Drain Catchment (trib of Torne/Three Rivers) (GB104028064350)
2024 spills / hours
36 / 93
Long-term average
42.2 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 100 hours spilling →
Trib North Soak Drain 32 100 down 11% 100%
Tadcaster West CSO
Overflow on sewer network
Company site name
TADCASTER WEST/CSO
EA ID / permit
YWS00207 · 27/20/0112
Outlet location
SE4874443422 (OS grid reference) · View on Apple Maps
WFD catchment
Wharfe from Collingham Beck to Tadcaster Weir (GB104027064255)
2024 spills / hours
54 / 105
Long-term average
53.2 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 100 hours spilling →
River Wharfe 42 100 down 22% 100%
Newton on Derwent SPS
Storm discharge at pumping station
Company site name
NEWTON DERWENT/SPS
EA ID / permit
YWS00546 · 27/28/0076
Outlet location
SE7184049760 (OS grid reference) · View on Apple Maps
WFD catchment
River Derwent from Kirkham to Elvington Beck (GB104027068312)
2024 spills / hours
22 / 149
Long-term average
20.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 99 hours spilling →
Birker Goit (Un-Named Trib) 23 99 up 5% 100%
Danby Sewage Treatment Works
Inlet overflow at sewage works
Sewage works
Danby
Company site name
DANBY/STW
EA ID / permit
YWS00610 · 27/29/0108
Outlet location
NZ7093008320 (OS grid reference) · View on Apple Maps
WFD catchment
Esk from Sleddale Beck to Ruswarp (GB104027068150)
2024 spills / hours
43 / 170
Long-term average
94.2 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 ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 99 hours spilling →
River Esk 38 99 down 12% 100%
Stalker Walk No 2CSO
Overflow on sewer network
Company site name
STALKER WALK/NO 2 CSO
EA ID / permit
YWS01549 · WRA7998
Outlet location
SK3415085997 (OS grid reference) · View on Apple Maps
WFD catchment
River Porter from Source to River Sheaf (GB104027057760)
2024 spills / hours
7 / 5.8
Long-term average
117.0 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 99 hours spilling →
Porter Brook 42 99 up 500% 100%
Permit applied for
Storm tank at sewage works
Sewage works
Permit Applied For
Company site name
GILLING EAST/STW
EA ID / permit
YWS00792 · Permit applied for
Outlet location
SE6220077300 (OS grid reference) · View on Apple Maps
WFD catchment
Holbeck from Source to Marrs Beck (GB104027068420)
2024 spills / hours
41 / 470
Long-term average
47.3 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 99 hours spilling →
Permit applied for 14 99 down 66% 100%
Pools Lane CSO
Overflow on sewer network
Company site name
POOLS LANE/CSO
EA ID / permit
YWS00857 · C4871
Outlet location
SE3765710923 (OS grid reference) · View on Apple Maps
WFD catchment
Cudworth Dyke from Source to River Dearne (GB104027063230)
2024 spills / hours
18 / 80
Long-term average
22.0 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 99 hours spilling →
Pools Dike 19 99 up 6% 100%
Harehills Avenue No 2 CSO
Overflow on sewer network
Company site name
HAREHILLS AVENUE/NO 2 CSO
EA ID / permit
YWS01638 · WRA8174
Outlet location
SE3206436085 (OS grid reference) · View on Apple Maps
WFD catchment
Meanwood Beck from Source to River Aire (GB104027062900)
2024 spills / hours
61 / 128
Long-term average
59.5 spills a year (monitored since 2020)
High-spill reason (company)
Performance - Other maintenance / capital works (e.g. jetting)
Investigation
Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 99 hours spilling →
Gipton Beck 48 99 down 21% 100%
Kettlewell STW
Inlet overflow at sewage works
Sewage works
Kettlewell
Company site name
KETTLEWELL/STW
EA ID / permit
YWS00187 · 27/19/0078
Outlet location
SD9689072050 (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
77 / 154
Long-term average
61.8 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 99 hours spilling →
River Wharfe 70 99 down 9% 100%
Askwith SPS
Overflow on sewer network
Company site name
ASKWITH/CSO
EA ID / permit
YWS00178 · 27/19/0056
Outlet location
SE1641048060 (OS grid reference) · View on Apple Maps
WFD catchment
Wharfe from Hundwith Beck to River Washburn (GB104027064258)
2024 spills / hours
44 / 189
Long-term average
38.8 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 98 hours spilling →
West Beck 29 98 down 34% 100%
Yws Unknown Sites Default
Storm discharge at pumping station
Company site name
BOWLAMS DYKE/CSO
EA ID / permit
YWS00996 · H140
Outlet location
TA1142045400 (OS grid reference) · View on Apple Maps
WFD catchment
Foredyke Stream Lower to Holderness Dr (GB104026066910)
2024 spills / hours
10 / 42
Long-term average
34.8 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 98 hours spilling →
Leven Drain 10 98 no change 100%
Spring Avenue CSO
Overflow on sewer network
Company site name
SPRING AVENUE/CSO
EA ID / permit
YWS01537 · WRA7984
Outlet location
SE0686041160 (OS grid reference) · View on Apple Maps
WFD catchment
Worth from Bridgehouse Beck to R Aire (GB104027062891)
2024 spills / hours
57 / 105
Long-term average
31.8 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 98 hours spilling →
River Worth (via Public Sewer) 45 98 down 21% 100%
Hall Terrace Clay Cross & High Haze
Overflow on sewer network
Company site name
HIGH HAZEL COURT/CSO
EA ID / permit
YWS01885 · WRA8620
Outlet location
SK4037064190 (OS grid reference) · View on Apple Maps
WFD catchment
Rother from Source to Redleadmill Brook (GB104027052280)
2024 spills / hours
52 / 124
Long-term average
26.8 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 98 hours spilling →
River Rother 42 98 down 19% 96%
Station Road No. 2 CSO
Overflow on sewer network
Company site name
MENSTON CEMETERY/CSO
EA ID / permit
YWS00180 · 27/19/0064
Outlet location
SE1716044880 (OS grid reference) · View on Apple Maps
WFD catchment
Wharfe from Hundwith Beck to River Washburn (GB104027064258)
2024 spills / hours
55 / 159
Long-term average
36.0 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
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 98 hours spilling →
Mickle Ing Beck 41 98 down 25% 97%
Mill Hill Sewage Pumping Station
Storm discharge at pumping station
Company site name
MILL HILL/CSO
EA ID / permit
YWS00477 · 27/24/0464
Outlet location
SE6167055790 (OS grid reference) · View on Apple Maps
WFD catchment
River Foss from the Syke to the River Ouse (GB104027063520)
2024 spills / hours
25 / 122
Long-term average
20.0 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 98 hours spilling →
River Foss 21 98 down 16% 100%
Dean Beck CSO
Overflow on sewer network
Company site name
DEAN BECK/CSO
EA ID / permit
YWS02014 · WRA9108
Outlet location
SE2542530001 (OS grid reference) · View on Apple Maps
WFD catchment
Milshaw Beck from Source to Low/Wortley/Pudsey Bks (GB104027062750)
2024 spills / hours
61 / 153
Long-term average
65.5 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
Operational improvement completed
Volume & pollution
Estimate from 98 hours spilling →
Farnley Wood Beck 38 98 down 38% 100%
Stanley STW
Inlet overflow at sewage works
Sewage works
Stanley
Company site name
STANLEY/STW
EA ID / permit
YWS00926 · E743(SS)
Outlet location
SE3528023900 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Chald to River Aire (GB104027062632)
2024 spills / hours
48 / 134
Long-term average
30.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 97 hours spilling →
River Calder & Bramley'S Beck 27 97 down 44% 100%
Baptists Lane CSO
Overflow on sewer network
Company site name
BAPTIST LANE/CSO
EA ID / permit
YWS02016 · WRA9111
Outlet location
SE2963219839 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Colne to River Chald (GB104027062631)
2024 spills / hours
41 / 63
Long-term average
40.2 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Monitor below 90%
Sensor failure / issue · Resolved - May
Investigation
UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 97 hours spilling →
Spring Mill Beck 34 97 down 17% 88%
Galphay Sewage Pumping Station
Storm discharge at pumping station
Company site name
GALPHAY/CSO
EA ID / permit
YWS01216 · WADC179
Outlet location
SE2540072500 (OS grid reference) · View on Apple Maps
WFD catchment
Kex Beck from Source to River Laver (GB104027069260)
2024 spills / hours
34 / 144
Long-term average
32.8 spills a year (monitored since 2020)
High-spill reason (company)
Performance - SW Infiltration
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 97 hours spilling →
Trib of Laver 35 97 up 3% 100%
Yorkshire Water Frizley Gardens Bra
Overflow on sewer network
Company site name
FRIZLEY GARDENS/CSO
EA ID / permit
YWS00876 · C5060
Outlet location
SE1541035920 (OS grid reference) · View on Apple Maps
WFD catchment
Bradford Beck (Clayton Bk to R Aire) (GB104027062862)
2024 spills / hours
29 / 39
Long-term average
28.8 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 97 hours spilling →
Bradford Beck 36 97 up 24% 100%
Ferryboat Lane Sewage Pumping Stn
Storm discharge at pumping station
Company site name
FERRYBOAT LANE/SPS
EA ID / permit
YWS01474 · WRA7798
Outlet location
SK4814099332 (OS grid reference) · View on Apple Maps
WFD catchment
Don from Greasborough Dyke to River Dearne (GB104027057452)
2024 spills / hours
9 / 58
Long-term average
4.4 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 97 hours spilling →
Unnamed Trib of River Don 13 97 up 44% 100%
Snaith Marsh Sewage Pumping Station
Storm discharge at pumping station
Company site name
SNAITH MARSH/SPS
EA ID / permit
YWS00052 · EPRQB3697RY
Outlet location
SE6432922472 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Fryston Beck to River Ouse (GB104027063037)
2024 spills / hours
51 / 85
Long-term average
18.8 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 96 hours spilling →
Tributary of River Aire 40 96 down 22% 100%
Sharlston (Gin Lane) SPS
Overflow on sewer network
Company site name
SHARLSTON/CSO
EA ID / permit
YWS01485 · WRA7888
Outlet location
SE4000019880 (OS grid reference) · View on Apple Maps
WFD catchment
Went from Source to Hoyle Mill Stream (GB104027063380)
2024 spills / hours
24 / 74
Long-term average
25.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 96 hours spilling →
Went Beck 19 96 down 21% 99%
Wyke Old Lane CSO
Overflow on sewer network
Company site name
WYKE OLD LANE/CSO
EA ID / permit
YWS01756 · WRA8426
Outlet location
SE1485825134 (OS grid reference) · View on Apple Maps
WFD catchment
Clifton Beck from Source to River Calder (GB104027062700)
2024 spills / hours
80 / 272
Long-term average
84.8 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 96 hours spilling →
Clifton Beck 48 96 down 40% 100%
Kearsley Lne/Daylands Ave/Hameline
Overflow on sewer network
Company site name
DAYLANDS AVENUE/NO 2 CSO
EA ID / permit
YWS01383 · WRA7381
Outlet location
SK5097097850 (OS grid reference) · View on Apple Maps
WFD catchment
Kearsley Bk (GB104027064244)
2024 spills / hours
23 / 63
Long-term average
48.4 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 96 hours spilling →
Kearsley Brook 14 96 down 39% 100%
Winkholme Sewage Pumping Station
Overflow on sewer network
Company site name
WINKHOLME/CSO
EA ID / permit
YWS01031 · NPSWQD011176
Outlet location
SD9685043011 (OS grid reference) · View on Apple Maps
WFD catchment
Eastburn Beck from Source to Lothersdale Beck (GB104027062930)
2024 spills / hours
23 / 72
Long-term average
28.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 96 hours spilling →
Ickornshaw Beck 22 96 down 4% 100%
Genn Lane CSO
Overflow on sewer network
Company site name
GENN LANE/CSO
EA ID / permit
YWS00886 · C5710
Outlet location
SE3453004400 (OS grid reference) · View on Apple Maps
WFD catchment
Dove from Source to River Dearne (GB104027057510)
2024 spills / hours
32 / 80
Long-term average
35.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 96 hours spilling →
Trib of Worsborough Reservoir 29 96 down 9% 96%
Main Road SPS
Storm discharge at pumping station
Company site name
WYTON/SPS
EA ID / permit
YWS01262 · WADC477
Outlet location
TA1740033000 (OS grid reference) · View on Apple Maps
WFD catchment
Wyton Drain/Sproatley Dr from Sourse to Humber (GB104026066600)
2024 spills / hours
21 / 153
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
Volume & pollution
Estimate from 95 hours spilling →
Nearby Ditch 11 95 down 48% 100%
Cayton Bay Sewage Pumping Station
Storm discharge at pumping station
Company site name
CAYTON BAY/CSO
EA ID / permit
YWS01303 · WADC84
Outlet location
TA0685084100 (OS grid reference) · View on Apple Maps
WFD catchment
Yorkshire North (GB650401500004)
Bathing water
Cayton Bay
2024 spills / hours
4 / 20
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 95 hours spilling →
North Sea 7 95 up 75% 100%
Millshaw No. 2 CSO
Overflow on sewer network
Company site name
MILLSHAW/NO 2 CSO
EA ID / permit
YWS00732 · 3544
Outlet location
SE2804030022 (OS grid reference) · View on Apple Maps
WFD catchment
Milshaw Beck from Source to Low/Wortley/Pudsey Bks (GB104027062750)
2024 spills / hours
24 / 41
Long-term average
31.7 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 95 hours spilling →
Mill Shaw Beck 37 95 up 54% 99%
Cemetery Lane CSO
Overflow on sewer network
Company site name
CEMETERY LANE/CSO
EA ID / permit
YWS01297 · WADC809
Outlet location
SE0612643100 (OS grid reference) · View on Apple Maps
WFD catchment
Aire (Eshton Beck to R Worth) (GB104027063033)
2024 spills / hours
95 / 323
Long-term average
93.8 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Resolved - Mar
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 94 hours spilling →
River Aire 29 94 down 69% 78%
Flawith Sewage Treatment Works
Inlet overflow at sewage works
Sewage works
Flawith
Company site name
FLAWITH/STW
EA ID / permit
YWS00429 · 27/24/0330
Outlet location
SE4847065420 (OS grid reference) · View on Apple Maps
WFD catchment
Kyle from Derrings Beck to New Parks Beck (GB104027063860)
2024 spills / hours
101 / 363
Long-term average
87.7 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 94 hours spilling →
Unnamed Trib of River Kyle 53 94 down 48% 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.