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
Sewerbridge Lane CSO
Overflow on sewer network
Company site name
SEWERBRIDGE LANE/CSO
EA ID / permit
YWS00862 · C4936
Outlet location
SE4130121355 (OS grid reference) · View on Apple Maps
WFD catchment
Choke Churl Bk from Source to River Calder (GB104027062590)
2024 spills / hours
22 / 112
Long-term average
28.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 41 hours spilling →
Sewerbridge Beck 7 41 down 68% 100%
Pilsey No 2 CSO
Overflow on sewer network
Company site name
PILSLEY/NO 2 CSO
EA ID / permit
YWS01592 · WRA8111
Outlet location
SK4172562194 (OS grid reference) · View on Apple Maps
WFD catchment
Rother from Source to Redleadmill Brook (GB104027052280)
2024 spills / hours
17 / 39
Long-term average
7.8 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 41 hours spilling →
River Rother 17 41 no change 90%
Morley Lane CSO
Overflow on sewer network
Company site name
MORLEY LANE/CSO
EA ID / permit
YWS01873 · WRA8588
Outlet location
SE1152815933 (OS grid reference) · View on Apple Maps
WFD catchment
River Colne from Wessenden Brook to R Holme (GB104027063330)
2024 spills / hours
33 / 44
Long-term average
45.2 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 41 hours spilling →
River Colne 32 41 down 3% 100%
Burn Airfield SPS
Overflow on sewer network
Company site name
BURN AIRFIELD/CSO
EA ID / permit
YWS01944 · WRA8735
Outlet location
SE6078627925 (OS grid reference) · View on Apple Maps
WFD catchment
Ouse from R Wharfe to Upper Humber (GB104027064270)
2024 spills / hours
19 / 43
Long-term average
30.5 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 41 hours spilling →
Hagg Bush Dike 14 41 down 26% 100%
Hawthorne Street SPS
Storm discharge at pumping station
Company site name
HAWTHORNE STREET/CSO
EA ID / permit
YWS01979 · WRA8822
Outlet location
SK3861070050 (OS grid reference) · View on Apple Maps
WFD catchment
Rother from Redleadmill Brook to Spital Brook (GB104027057630)
2024 spills / hours
1 / 0.3
Long-term average
1.5 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 41 hours spilling →
River Rother 5 41 up 400% 100%
Union Street CSO
Overflow on sewer network
Company site name
UNION STREET/CSO
EA ID / permit
YWS00710 · 3374
Outlet location
SK4176092810 (OS grid reference) · View on Apple Maps
WFD catchment
Don from Greasborough Dyke to River Dearne (GB104027057452)
2024 spills / hours
33 / 47
Long-term average
34.5 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 41 hours spilling →
River Mas Culverted 29 41 down 12% 100%
Fryston Sewage Pumping Station
Storm discharge at pumping station
Company site name
FRYSTON/CSO
EA ID / permit
YWS01026 · NPSWQD009929
Outlet location
SE4564727178 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Wyke Beck to Fryston Beck (GB104027063036)
2024 spills / hours
9 / 21
Long-term average
10.0 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 41 hours spilling →
River Aire 10 41 up 11% 100%
Corker Bottoms Lane CSO
Overflow on sewer network
Company site name
CORKER BOTTOMS LANE/CSO
EA ID / permit
YWS01621 · WRA8157
Outlet location
SK3828886959 (OS grid reference) · View on Apple Maps
WFD catchment
Don from River Loxley confl to River Don Works (GB104027057412)
2024 spills / hours
44 / 95
Long-term average
49.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 41 hours spilling →
Kirk Bridge Dike 30 41 down 32% 100%
Wisewood Road CSO
Overflow on sewer network
Company site name
WISEWOOD ROAD/CSO
EA ID / permit
YWS01990 · WRA9024
Outlet location
SK3240589402 (OS grid reference) · View on Apple Maps
WFD catchment
Loxley from Strines Dyke to River Don (GB104027057370)
2024 spills / hours
39 / 64
Long-term average
31.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 41 hours spilling →
River Loxley 26 41 down 33% 94%
Outgang Road SPS
Overflow on sewer network
Company site name
OUTGANG ROAD/CSO
EA ID / permit
YWS00480 · 27/25/0074
Outlet location
SE8056083360 (OS grid reference) · View on Apple Maps
WFD catchment
The Syme form Source to Thornton/Dalby/Staindale (GB104027068460)
2024 spills / hours
26 / 41
Long-term average
34.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 40 hours spilling →
Outgang Drain 27 40 up 4% 100%
Fosters Garage SPS
Storm discharge at pumping station
Company site name
FOSTERS GARAGE/CSO
EA ID / permit
YWS00712 · 3384
Outlet location
SK4645095280 (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
6.0 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 40 hours spilling →
Tributary of the River Don 10 40 up from 0 100%
Folkton Sewage Pumping Station
Storm discharge at pumping station
Company site name
FOLKTON CARR LN/CSO
EA ID / permit
YWS01214 · WADC173
Outlet location
TA0570079900 (OS grid reference) · View on Apple Maps
WFD catchment
Hertford from Source to River Derwent (GB104027067811)
2024 spills / hours
28 / 102
Long-term average
20.5 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 40 hours spilling →
Ditch 22 40 down 21% 100%
Farnley Ring Road CSO
Overflow on sewer network
Company site name
FARNLEY RING ROAD/CSO
EA ID / permit
YWS00871 · C4966
Outlet location
SE2467533549 (OS grid reference) · View on Apple Maps
WFD catchment
Low/Wortley/Pudsey Bks from Source to Milshaw Beck (GB104027062830)
2024 spills / hours
26 / 54
Long-term average
28.5 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 40 hours spilling →
Farnley Beck 22 40 down 15% 100%
Bagley Lane 39 CSO
Overflow on sewer network
Company site name
BAGLEY LANE 39/CSO
EA ID / permit
YWS00641 · 2847
Outlet location
SE2226535662 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
14 / 18
Long-term average
8.2 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 40 hours spilling →
Bagley Beck Culverted 30 40 up 114% 100%
Station Road SSO
Storm discharge at pumping station
Company site name
STATION ROAD WISTOW/CSO
EA ID / permit
YWS01187 · WADC1383
Outlet location
SE5970135400 (OS grid reference) · View on Apple Maps
WFD catchment
Holmes Dike catchment (trib of Ouse) (GB104027063650)
2024 spills / hours
16 / 119
Long-term average
13.5 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Resolved - February after reporting year
Investigation
Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 40 hours spilling →
Trib of River Ouse 5 40 down 69% 37%
Dark Lane No 2 CSO
Overflow on sewer network
Company site name
DARK LANE/NO 2 CSO
EA ID / permit
YWS01773 · WRA8444
Outlet location
SE1198023370 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from Ryburn Confluence to River Colne (GB104027062642)
2024 spills / hours
26 / 30
Long-term average
38.3 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed
Improvement
UWWTR improvement ongoing
Volume & pollution
Estimate from 40 hours spilling →
Tributary of the River Calder 32 40 up 23% 93%
Hipper Hall CSO
Overflow on sewer network
Company site name
HIPPER HALL/CSO
EA ID / permit
YWS02110 · WRA9216
Outlet location
SK3415069490 (OS grid reference) · View on Apple Maps
WFD catchment
Hipper from Source to River Rother (GB104027057660)
2024 spills / hours
42 / 109
Long-term average
28.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 40 hours spilling →
Tributary of the River Hipper 20 40 down 52% 97%
Dowley Gap (Bingley) WwTW
Inlet overflow at sewage works
Sewage works
Dowley Gap
Company site name
DOWLEY GAP/STW
EA ID / permit
YWS00148 · 2502
Outlet location
SE1230338141 (OS grid reference) · View on Apple Maps
WFD catchment
Aire (R Worth to Gill Beck) (GB104027063034)
2024 spills / hours
27 / 56
Long-term average
20.3 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 40 hours spilling →
River Aire 20 40 down 26% 100%
Clayton STW
Storm tank at sewage works
Sewage works
Clayton
Company site name
CLAYTON/STW
EA ID / permit
YWS00126 · 2352
Outlet location
SE4570008000 (OS grid reference) · View on Apple Maps
WFD catchment
Frickley Beck from Source to Ea Beck (GB104027063140)
2024 spills / hours
9 / 34
Long-term average
13.8 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 40 hours spilling →
Frickley Beck 6 40 down 33% 100%
Gargrave Sewage Treatment Works
Inlet overflow at sewage works
Sewage works
Gargrave
Company site name
GARGRAVE/STW
EA ID / permit
YWS00643 · 2855
Outlet location
SD9461853570 (OS grid reference) · View on Apple Maps
WFD catchment
Aire (Eshton Beck to R Worth) (GB104027063033)
2024 spills / hours
64 / 179
Long-term average
59.8 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 40 hours spilling →
River Aire 11 40 down 83% 100%
North Bierley CSO
Overflow on sewer network
Company site name
NORTH BIERLEY/CSO
EA ID / permit
YWS01029 · NPSWQD010861
Outlet location
SE1809027414 (OS grid reference) · View on Apple Maps
WFD catchment
Spen Beck from Source to River Calder (GB104027062710)
2024 spills / hours
28 / 71
Long-term average
16.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 40 hours spilling →
Hunsworth Beck 12 40 down 57% 100%
Memorial Gardens SPS
Storm discharge at pumping station
Company site name
MEMORIAL GDNS/CSO
EA ID / permit
YWS01735 · WRA8365
Outlet location
TA3440027940 (OS grid reference) · View on Apple Maps
WFD catchment
Yorkshire South (GB640402491000)
Bathing water
Withernsea
2024 spills / hours
8 / 36
Long-term average
61.3 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation ongoing
Improvement
Operational improvement ongoing
Volume & pollution
Estimate from 39 hours spilling →
North Sea 8 39 no change 100%
Stapleton Park WwTW
Inlet overflow at sewage works
Sewage works
Stapleton Park
Company site name
STAPLETON PARK/STW
EA ID / permit
YWS00127 · 2363
Outlet location
SE5150018980 (OS grid reference) · View on Apple Maps
WFD catchment
Womersley Beck from Source to Blowell Drain (GB104027063370)
2024 spills / hours
31 / 90
Long-term average
50.8 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 39 hours spilling →
Trib of Womersley Beck 28 39 down 10% 100%
Show Ground CSO
Overflow on sewer network
Company site name
SHOW GROUND/CSO
EA ID / permit
YWS00715 · 3422(SS)
Outlet location
SE1577465498 (OS grid reference) · View on Apple Maps
WFD catchment
Nidd from Ashfoldside Beck to Birstwith (GB104027068295)
2024 spills / hours
22 / 98
Long-term average
17.3 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 39 hours spilling →
River Nidd 8 39 down 64% 100%
Foss Bank CSO
Overflow on sewer network
Company site name
FOSS BANK/CSO
EA ID / permit
YWS01209 · WADC1520
Outlet location
SE6088852490 (OS grid reference) · View on Apple Maps
WFD catchment
River Foss from the Syke to the River Ouse (GB104027063520)
2024 spills / hours
15 / 36
Long-term average
12.5 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 39 hours spilling →
River Foss 14 39 down 7% 100%
Retford Road No 2 CSO
Overflow on sewer network
Company site name
RETFORD ROAD/NO 2 CSO
EA ID / permit
YWS01508 · WRA7952
Outlet location
SK4136785833 (OS grid reference) · View on Apple Maps
WFD catchment
Rother, Doe Lea to Don (GB104027057772)
2024 spills / hours
36 / 53
Long-term average
37.5 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 39 hours spilling →
River Rother 24 39 down 33% 100%
Cudworth SPS
Storm discharge at pumping station
Company site name
CUDWORTH/NO 2 CSO
EA ID / permit
YWS01448 · WRA7592
Outlet location
SE3809708678 (OS grid reference) · View on Apple Maps
WFD catchment
Cudworth Dyke from Source to River Dearne (GB104027063230)
2024 spills / hours
47 / 101
Long-term average
42.5 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 39 hours spilling →
Trib of Small Bridge Dyke 9 39 down 81% 100%
Walmgate CSO
Overflow on sewer network
Company site name
WALMGATE/CSO
EA ID / permit
YWS00460 · 27/24/0436
Outlet location
SE6088551519 (OS grid reference) · View on Apple Maps
WFD catchment
Tang Hall Bk/Old Foss Bk catch, trib of River Foss (GB104027063500)
2024 spills / hours
18 / 26
Long-term average
17.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 39 hours spilling →
Tang Hall Beck 21 39 up 17% 100%
Middlecliffe Sewage Pumping Station
Storm discharge at pumping station
Company site name
MIDDLECLIFFE/CSO
EA ID / permit
YWS01484 · WRA7871
Outlet location
SE4310004710 (OS grid reference) · View on Apple Maps
WFD catchment
Dearne from Lundwood to River Dove (GB104027063172)
2024 spills / hours
7 / 33
Long-term average
9.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 39 hours spilling →
Billingley Dyke 5 39 down 29% 100%
Barlby Road SPS
Storm discharge at pumping station
Company site name
BARLBY ROAD/CSO
EA ID / permit
YWS02196 · YWUCD1/89
Outlet location
SE6281032940 (OS grid reference) · View on Apple Maps
WFD catchment
Ouse from R Wharfe to Upper Humber (GB104027064270)
2024 spills / hours
35 / 64
Long-term average
59.5 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 39 hours spilling →
River Ouse 26 39 down 26% 100%
Burn Road CSO
Overflow on sewer network
Company site name
BURN ROAD/CSO
EA ID / permit
YWS00067 · 1896
Outlet location
SE1203018890 (OS grid reference) · View on Apple Maps
WFD catchment
River Colne from River Holme to River Calder (GB104027062550)
2024 spills / hours
30 / 49
Long-term average
24.8 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 38 hours spilling →
Grimescar Dike 23 38 down 23% 97%
Wath Brook Dike CSO
Overflow on sewer network
Company site name
WATH BROOK DIKE/CSO
EA ID / permit
YWS01273 · WADC660
Outlet location
SE4329401036 (OS grid reference) · View on Apple Maps
WFD catchment
River Dearne Darfield STW to River Don (GB104027063173)
2024 spills / hours
26 / 37
Long-term average
16.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 38 hours spilling →
Brook Dyke 18 38 down 31% 100%
Lower Kipping Lane 2 CSO
Overflow on sewer network
Company site name
LOWER KIPPING LANE/2 CSO
EA ID / permit
YWS01727 · WRA8323
Outlet location
SE0979632499 (OS grid reference) · View on Apple Maps
WFD catchment
Clayton Beck (Source to Bradford Bk) (GB104027062861)
2024 spills / hours
34 / 51
Long-term average
34.3 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 38 hours spilling →
Pinch Beck 24 38 down 29% 100%
Lascelles Lane SPS
Storm discharge at pumping station
Company site name
LASCELLES LANE/CSO
EA ID / permit
YWS00522 · 27/27/0091
Outlet location
SE7992272748 (OS grid reference) · View on Apple Maps
WFD catchment
Derwent from River Rye to Kirkham (GB104027068313)
2024 spills / hours
29 / 55
Long-term average
27.5 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 38 hours spilling →
River Derwent 31 38 up 7% 100%
Burley Lodge CSO
Overflow on sewer network
Company site name
BURLEY LODGE/CSO
EA ID / permit
YWS01338 · WRA6863
Outlet location
SE1739046268 (OS grid reference) · View on Apple Maps
WFD catchment
Wharfe from Hundwith Beck to River Washburn (GB104027064258)
2024 spills / hours
6 / 2.3
Long-term average
7.8 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 38 hours spilling →
River Wharfe 12 38 up 100% 100%
High Street Heckmondwike No 2 CSO
Overflow on sewer network
Company site name
HIGH ST HECKMONDWIK/2 CSO
EA ID / permit
YWS01668 · WRA8209
Outlet location
SE2176923569 (OS grid reference) · View on Apple Maps
WFD catchment
Spen Beck from Source to River Calder (GB104027062710)
2024 spills / hours
32 / 35
Long-term average
39.2 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 38 hours spilling →
Culverted Trib of Spen River 35 38 up 9% 100%
Barrowfield Road CSO
Overflow on sewer network
Company site name
BARROWFIELD ROAD/CSO
EA ID / permit
YWS02176 · WRA9314
Outlet location
SK3827098592 (OS grid reference) · View on Apple Maps
WFD catchment
Knoll Beck from Source to River Dearne (GB104027057470)
2024 spills / hours
16 / 32
Long-term average
31.3 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 38 hours spilling →
Trib of Harley Dike 13 38 down 19% 99%
Lealholm Sewage Pumping Station
Storm discharge at pumping station
Company site name
LEALHOLM SCHOOL/CSO
EA ID / permit
YWS00590 · 27/29/0061
Outlet location
NZ7625007640 (OS grid reference) · View on Apple Maps
WFD catchment
Esk from Sleddale Beck to Ruswarp (GB104027068150)
2024 spills / hours
17 / 147
Long-term average
16.3 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 38 hours spilling →
River Esk 10 38 down 41% 100%
King George CSO
Overflow on sewer network
Company site name
KING GEORGE/CSO
EA ID / permit
YWS01563 · WRA8072
Outlet location
SE0789041920 (OS grid reference) · View on Apple Maps
WFD catchment
Aire (R Worth to Gill Beck) (GB104027063034)
2024 spills / hours
20 / 39
Long-term average
35.2 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 38 hours spilling →
River Aire 20 38 no change 100%
Dene Place No 2 CSO
Overflow on sewer network
Company site name
DENE PLACE/NO 2 CSO
EA ID / permit
YWS01994 · WRA9083
Outlet location
SE0912225732 (OS grid reference) · View on Apple Maps
WFD catchment
Hebble Brook from Source to River Calder (GB104027062780)
2024 spills / hours
18 / 36
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 38 hours spilling →
Hebble Brook 25 38 up 39% 100%
Brandy Mill 34 CSO
Overflow on sewer network
Company site name
BRANDY MILL 34/CSO
EA ID / permit
YWS00621 · 2739
Outlet location
SE0609740305 (OS grid reference) · View on Apple Maps
WFD catchment
Worth from Bridgehouse Beck to R Aire (GB104027062891)
2024 spills / hours
20 / 41
Long-term average
25.0 spills a year (monitored since 2020)
Monitor below 90%
Sensor failure / issue · Resolved - Feb
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 38 hours spilling →
River Worth 19 38 down 5% 87%
Warm Lane, Yeadon CSO
Overflow on sewer network
Company site name
WARM LANE YEADON/CSO
EA ID / permit
YWS00698 · 3326
Outlet location
SE1980040100 (OS grid reference) · View on Apple Maps
WFD catchment
Gill Beck Guisley from Source to River Aire (GB104027062910)
2024 spills / hours
23 / 53
Long-term average
24.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 38 hours spilling →
Yeadon Gill 18 38 down 22% 100%
Carr Lane SPS
Overflow on sewer network
Company site name
GLASS HOUGHTON/CSO
EA ID / permit
YWS01290 · WADC76
Outlet location
SE4340024020 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Chald to River Aire (GB104027062632)
2024 spills / hours
34 / 34
Long-term average
41.5 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 38 hours spilling →
Carr Beck 34 38 no change 100%
Whams Road CSO
Overflow on sewer network
Company site name
WHAMS ROAD/NO 2 CSO
EA ID / permit
YWS01917 · WRA8685
Outlet location
SE1916004120 (OS grid reference) · View on Apple Maps
WFD catchment
Don from Source to Scout Dyke (GB104027057500)
2024 spills / hours
12 / 27
Long-term average
8.7 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 37 hours spilling →
Sledbrook Dyke 6 37 down 50% 100%
Sawmill Lane CSO
Overflow on sewer network
Company site name
SAWMILL LANE/CSO
EA ID / permit
YWS00502 · 27/25/0147
Outlet location
SE6161983501 (OS grid reference) · View on Apple Maps
WFD catchment
River Rye from River Seph to River Riccal (GB104027068200)
2024 spills / hours
24 / 54
Long-term average
49.3 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 37 hours spilling →
River Rye 25 37 up 4% 100%
Porret Lane Combined Sewer Overflow
Overflow on sewer network
Company site name
PORRET LANE/NO 2 CSO
EA ID / permit
YWS00599 · 27/29/0078
Outlet location
NZ7893016920 (OS grid reference) · View on Apple Maps
WFD catchment
Newton Beck from Source to Staithes Beck (GB104027068750)
2024 spills / hours
33 / 119
Long-term average
28.3 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 37 hours spilling →
Trib of Dales Beck 13 37 down 61% 100%
Willow Lane Beck CSO
Overflow on sewer network
Company site name
WILLOW LANE BECK/CSO
EA ID / permit
YWS02170 · WRA9304
Outlet location
SE1520017527 (OS grid reference) · View on Apple Maps
WFD catchment
River Colne from River Holme to River Calder (GB104027062550)
2024 spills / hours
38 / 43
Long-term average
62.8 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 37 hours spilling →
River Colne(via Birkby Relief) 28 37 down 26% 100%
Ravenscliffe Avenue CSO
Overflow on sewer network
Company site name
RAVENSCLIFFE AVENUE/CSO
EA ID / permit
YWS01634 · WRA8170
Outlet location
SE1930035370 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
47 / 155
Long-term average
42.2 spills a year (monitored since 2020)
Monitor below 90%
Sensor failure / issue · Resolved - Oct
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 37 hours spilling →
Fagley Beck 12 37 down 74% 87%
Bilton Lane Beck CSO
Overflow on sewer network
Company site name
BILTON LANE BECK/CSO
EA ID / permit
YWS00222 · 27/21/0043
Outlet location
SE3129057770 (OS grid reference) · View on Apple Maps
WFD catchment
Nidd from Oak Beck to Low Bridge on Briggate (Knaresborough) (GB104027068297)
2024 spills / hours
32 / 68
Long-term average
29.8 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 37 hours spilling →
Bilton Beck 23 37 down 28% 92%
Ingrow Bridge CSO
Overflow on sewer network
Company site name
INGROW BRIDGE/CSO
EA ID / permit
YWS00995 · EPRUP3322GR
Outlet location
SE0562839746 (OS grid reference) · View on Apple Maps
WFD catchment
Worth from Bridgehouse Beck to R Aire (GB104027062891)
2024 spills / hours
4 / 2.0
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 37 hours spilling →
River Worth 17 37 up 325% 99%

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.