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
Hull Road York CSO
Overflow on sewer network
Company site name
HULL ROAD YORK/CSO
EA ID / permit
YWS00459 · 27/24/0435
Outlet location
SE6205651426 (OS grid reference) · View on Apple Maps
WFD catchment
Tang Hall Bk/Old Foss Bk catch, trib of River Foss (GB104027063500)
2024 spills / hours
5 / 0.9
Long-term average
8.2 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.7 hours spilling →
Osbaldwick Beck 6 2.7 up 20% 100%
Town Hall Street CSO
Overflow on sewer network
Company site name
TOWN HALL STREET/CSO
EA ID / permit
YWS02120 · WRA9231
Outlet location
SE0590023530 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from Ryburn Confluence to River Colne (GB104027062642)
2024 spills / hours
17 / 3.0
Long-term average
18.5 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.5 hours spilling →
River Calder 18 2.5 up 6% 100%
Ingleby Arncliffe STW
Inlet overflow at sewage works
Sewage works
Ingleby Arncliffe
Company site name
INGLEBY ARNCLIFFE/STW/3XDWF OVERFLOW
EA ID / permit
YWS00015 · COPA/1207
Outlet location
NZ4510000900 (OS grid reference) · View on Apple Maps
WFD catchment
River Wiske from Source to Trenholme Stell (GB104027069550)
2024 spills / hours
86 / 195
Long-term average
34.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.5 hours spilling →
Carr Beck 3 2.5 down 97% 100%
Thorpe Road CSO
Overflow on sewer network
Company site name
THORPE ROAD/CSO
EA ID / permit
YWS00019 · 1298
Outlet location
SE3099027457 (OS grid reference) · View on Apple Maps
WFD catchment
Oulton Beck from Source to River Aire (GB104027062680)
2024 spills / hours
3 / 1.0
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
Volume & pollution
Estimate from 2.5 hours spilling →
Throstle Carr Beck 6 2.5 up 100% 100%
Horbury Road M1 CSO
Overflow on sewer network
Company site name
HORBURY ROAD M1/CSO
EA ID / permit
YWS00070 · 1921
Outlet location
SE3056118796 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Colne to River Chald (GB104027062631)
2024 spills / hours
4 / 1.8
Long-term average
3.5 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Resolved - Feb
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.5 hours spilling →
Lupset Beck 4 2.5 no change 67%
Boroughbridge Road CSO
Overflow on sewer network
Company site name
BOROUGHBRIDGE ROAD/CSO
EA ID / permit
YWS00276 · 27/21/0262
Outlet location
SE3483057400 (OS grid reference) · View on Apple Maps
WFD catchment
Nidd from Low Bridge on Briggate (Knaresborough) to Crimple Beck (GB104027068298)
Bathing water
Nidd at the Lido, Knaresborough
2024 spills / hours
10 / 3.3
Long-term average
8.0 spills a year (monitored since 2020)
Investigation
Bathing Water and/or Shellfish Water investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.5 hours spilling →
Frogmire Dyke 5 2.5 down 50% 98%
School Close Sewage Pumping Station
Storm discharge at pumping station
Company site name
SCHOOL CLOSE/CSO
EA ID / permit
YWS00410 · 27/24/0241
Outlet location
SE5638765169 (OS grid reference) · View on Apple Maps
WFD catchment
Huby Burn from Source to New Parks Beck (GB104027063900)
2024 spills / hours
37 / 185
Long-term average
17.0 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Resolved - January after reporting year
Investigation
UWWTR investigation ongoing, Operational investigation ongoing
Improvement
Operational improvement ongoing
Volume & pollution
Estimate from 2.5 hours spilling →
Tributary of River Kyle 3 2.5 down 92% 29%
Coxwold Sewage Treatment Plant
Inlet overflow at sewage works
Sewage works
Coxwold
Company site name
COXWOLD/STW
EA ID / permit
YWS00839 · C4234
Outlet location
SE5350077000 (OS grid reference) · View on Apple Maps
WFD catchment
Birdforth/Green's Bks Catch (trib of Swale) (GB104027068790)
2024 spills / hours
5 / 6.5
Long-term average
5.8 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.5 hours spilling →
Green'S Beck 3 2.5 down 40% 100%
Yws Unknown Sites Default
Overflow on sewer network
Company site name
NEWLAITHES ROAD/NO 1 CSO
EA ID / permit
YWS01069 · S/UD/104
Outlet location
SE2386636947 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
27 / 25
Long-term average
13.0 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 2.5 hours spilling →
Unknown 8 2.5 down 70% 100%
Haxby Rd CSO
Overflow on sewer network
Company site name
HAXBY ROAD/CSO
EA ID / permit
YWS01127 · WADC1003
Outlet location
SE6088453166 (OS grid reference) · View on Apple Maps
WFD catchment
River Foss from the Syke to the River Ouse (GB104027063520)
2024 spills / hours
6 / 3.0
Long-term average
3.5 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.5 hours spilling →
Culverted Trib of River Foss 3 2.5 down 50% 100%
South Street CSO
Overflow on sewer network
Company site name
SAVILLE TOWN/CSO
EA ID / permit
YWS01184 · WADC1348
Outlet location
SE2405521043 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Colne to River Chald (GB104027062631)
2024 spills / hours
6 / 2.0
Long-term average
3.3 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.5 hours spilling →
River Calder 7 2.5 up 17% 100%
South Goods Yard CSO
Overflow on sewer network
Company site name
SOUTH GOODS YARD/CSO
EA ID / permit
YWS01583 · WRA8101
Outlet location
SE0655041120 (OS grid reference) · View on Apple Maps
WFD catchment
Worth from Bridgehouse Beck to R Aire (GB104027062891)
2024 spills / hours
18 / 13
Long-term average
18.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.5 hours spilling →
River Worth 8 2.5 down 56% 100%
Prince of Wales Road 2 CSO
Overflow on sewer network
Company site name
PRINCE OF WALES RD/2 CSO
EA ID / permit
YWS01673 · WRA8212
Outlet location
SK3931087320 (OS grid reference) · View on Apple Maps
WFD catchment
Car Brook from Source to River Don (GB104027057360)
2024 spills / hours
14 / 5.3
Long-term average
19.5 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.5 hours spilling →
Car Brook 8 2.5 down 43% 100%
Raikes Lane CSO
Overflow on sewer network
Company site name
RAIKESWOOD DRIVE/CSO
EA ID / permit
YWS01676 · WRA8214
Outlet location
SE1921029320 (OS grid reference) · View on Apple Maps
WFD catchment
Spen Beck from Source to River Calder (GB104027062710)
2024 spills / hours
12 / 8.8
Long-term average
10.8 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.5 hours spilling →
High Royds Beck 2 2.5 down 83% 94%
Victoria Gardens CSO
Overflow on sewer network
Company site name
VICTORIA GARDENS/CSO
EA ID / permit
YWS01836 · WRA8539
Outlet location
SE2386036940 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
8 / 4.8
Long-term average
6.7 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 2.5 hours spilling →
River Aire 8 2.5 no change 100%
Dunmow Road CSO
Overflow on sewer network
Company site name
DUNMOW ROAD/CSO
EA ID / permit
YWS01935 · WRA8723
Outlet location
SK3738090230 (OS grid reference) · View on Apple Maps
WFD catchment
Don from River Loxley confl to River Don Works (GB104027057412)
2024 spills / hours
14 / 24
Long-term average
28.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.5 hours spilling →
Bagley Dyke 1 2.5 down 93% 100%
Stairfoot Lane CSO
Overflow on sewer network
Company site name
STAIRFOOT LANE/CSO
EA ID / permit
YWS02048 · WRA9152
Outlet location
SE2788540269 (OS grid reference) · View on Apple Maps
WFD catchment
Meanwood Beck from Source to River Aire (GB104027062900)
2024 spills / hours
6 / 4.3
Long-term average
6.2 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Resolved - Mar
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.5 hours spilling →
Adel Beck 3 2.5 down 50% 83%
Stansfield Mill CSO
Overflow on sewer network
Company site name
STANSFIELD MILL/CSO
EA ID / permit
YWS02123 · WRA9234
Outlet location
SE0434222159 (OS grid reference) · View on Apple Maps
WFD catchment
River Ryburn from Booth Dean Clough to R Calder (GB104027062580)
2024 spills / hours
16 / 44
Long-term average
13.2 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Resolved - Jul
Investigation
Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.5 hours spilling →
Nether Ends Beck 4 2.5 down 75% 58%
Stockbridge Road CSO
Overflow on sewer network
Company site name
ELLOUGHTON/CSO
EA ID / permit
YWS02216 · YWUCD2/37
Outlet location
SE9383328132 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
0 / 0.0
Long-term average
2.8 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.5 hours spilling →
Golf Links Beck 9 2.5 up from 0 100%
Richmond Bridge NO2 CSO
Overflow on sewer network
Company site name
RICHMOND BRIDGE/NO 2 CSO
EA ID / permit
YWS00356 · 27/23/0226
Outlet location
NZ1700000560 (OS grid reference) · View on Apple Maps
WFD catchment
Swale from Clapgate Beck to Bedale Beck (GB104027069122)
2024 spills / hours
5 / 0.3
Long-term average
3.7 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.4 hours spilling →
River Swale 6 2.4 up 20% 100%
Nunmonkton Common CSO
Overflow on sewer network
Company site name
NUN MONKTON COMMON/CSO
EA ID / permit
YWS00982 · EPRUP3222XH
Outlet location
SE5082757995 (OS grid reference) · View on Apple Maps
WFD catchment
Ouse from River Ure to River Nidd (GB104027069592)
2024 spills / hours
8 / 1.9
Long-term average
6.5 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.4 hours spilling →
Mill Sike 4 2.4 down 50% 100%
Stonebridge Lane CSO
Overflow on sewer network
Company site name
STONEBRIDGE LANE/CSO
EA ID / permit
YWS00121 · 2329
Outlet location
SE2547032860 (OS grid reference) · View on Apple Maps
WFD catchment
Low/Wortley/Pudsey Bks from Source to Milshaw Beck (GB104027062830)
2024 spills / hours
9 / 4.5
Long-term average
10.2 spills a year (monitored since 2020)
Investigation
Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.3 hours spilling →
Farnley Beck 6 2.3 down 33% 100%
Unity Grove CSO
Overflow on sewer network
Company site name
UNITY GROVE/CSO
EA ID / permit
YWS00252 · 27/21/0208
Outlet location
SE2943356908 (OS grid reference) · View on Apple Maps
WFD catchment
Oak Beck Catchment (Trib of Nidd) (GB104027063760)
2024 spills / hours
8 / 3.8
Long-term average
4.7 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Scheduled
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 2.3 hours spilling →
Oak Beck via Public Sewer 5 2.3 down 38% 86%
Broadway Station CSO
Storm discharge at pumping station
Company site name
BROADWAY STATION RD/CSO
EA ID / permit
YWS00942 · 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 / 1.8
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 2.3 hours spilling →
River Don 3 2.3 up 200% 100%
Broadway Station CSO
Storm discharge at pumping station
Company site name
BROADWAY 134/CSO
EA ID / permit
YWS00946 · EPREP3225GG
Outlet location
SE6499012610 (OS grid reference) · View on Apple Maps
WFD catchment
Don from Mill Dyke to River Ouse (GB104027064243)
2024 spills / hours
5 / 1.5
Long-term average
8.0 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.3 hours spilling →
River Don 6 2.3 up 20% 99%
Otley Road Adel CSO
Overflow on sewer network
Company site name
OTLEY ROAD ADEL/CSO
EA ID / permit
YWS01132 · WADC1025
Outlet location
SE2711640120 (OS grid reference) · View on Apple Maps
WFD catchment
Meanwood Beck from Source to River Aire (GB104027062900)
2024 spills / hours
6 / 8.8
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 2.3 hours spilling →
Culverted Trib of Adel Beck 4 2.3 down 33% 100%
Otterington Road SSO
Overflow on sewer network
Company site name
THORNTON LE MOOR/CSO
EA ID / permit
YWS01196 · WADC1427
Outlet location
SE3893088050 (OS grid reference) · View on Apple Maps
WFD catchment
River Wiske from Trenholme Stell to River Swale (GB104027069530)
2024 spills / hours
1 / 0.3
Long-term average
5.3 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Resolved - January after reporting year
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.3 hours spilling →
Trib of River Wiske 3 2.3 up 200% 78%
Bottom Boat Road SSO
Overflow on sewer network
Company site name
BOTTOM BOAT ROAD/CSO
EA ID / permit
YWS01284 · WADC734
Outlet location
SE3557924464 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Chald to River Aire (GB104027062632)
2024 spills / hours
2 / 1.5
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 2.3 hours spilling →
River Calder 3 2.3 up 50% 100%
Royston (Carlton-Shaw Lane)
Storm discharge at pumping station
Company site name
CARLTON SHAW LN/CSO
EA ID / permit
YWS01458 · WRA7675
Outlet location
SE3779010180 (OS grid reference) · View on Apple Maps
WFD catchment
Cudworth Dyke from Source to River Dearne (GB104027063230)
2024 spills / hours
11 / 25
Long-term average
6.2 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 2.3 hours spilling →
Shaw Dyke 1 2.3 down 91% 100%
Canal Road 330 No 2 CSO
Overflow on sewer network
Company site name
CANAL ROAD 330/NO 2 CSO
EA ID / permit
YWS01709 · WRA8253
Outlet location
SE1587035120 (OS grid reference) · View on Apple Maps
WFD catchment
Bradford Beck (Clayton Bk to R Aire) (GB104027062862)
2024 spills / hours
8 / 6.3
Long-term average
7.3 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 2.3 hours spilling →
Bradford Beck (Culverted) 5 2.3 down 38% 100%
Helliwell Syke CSO
Overflow on sewer network
Company site name
HELLIWELL SYKE/NO 3 CSO
EA ID / permit
YWS01758 · WRA8430
Outlet location
SE2359026060 (OS grid reference) · View on Apple Maps
WFD catchment
Clifton Beck from Source to River Calder (GB104027062700)
2024 spills / hours
2 / 2.3
Long-term average
2.3 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.3 hours spilling →
Helliwell Syke 1 2.3 down 50% 100%
Jack Lane CSO
Overflow on sewer network
Company site name
THE WELLINGTON/CSO
EA ID / permit
YWS01844 · WRA8543
Outlet location
SE3216031220 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
6 / 3.8
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 2.3 hours spilling →
Aire and Calder Navigation 7 2.3 up 17% 100%
Horsewood Road CSO
Overflow on sewer network
Company site name
HORSEWOOD ROAD/CSO
EA ID / permit
YWS02035 · WRA9138
Outlet location
SK4279085530 (OS grid reference) · View on Apple Maps
WFD catchment
Rother, Doe Lea to Don (GB104027057772)
2024 spills / hours
4 / 17
Long-term average
11.7 spills a year (monitored since 2020)
Monitor below 90%
Sensor failure / issue · Resolved - Sep
Investigation
Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 2.3 hours spilling →
Shirtcliff Brook 1 2.3 down 75% 60%
Bank End Avenue CSO
Overflow on sewer network
Company site name
BANK END AVENUE/CSO
EA ID / permit
YWS02128 · WRA9240
Outlet location
SE3619004600 (OS grid reference) · View on Apple Maps
WFD catchment
Dove from Source to River Dearne (GB104027057510)
2024 spills / hours
7 / 2.8
Long-term average
6.5 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.3 hours spilling →
Dob Sike 5 2.3 down 29% 100%
Stainland Road CSO
Overflow on sewer network
Company site name
STAINLAND ROAD/CSO
EA ID / permit
YWS02150 · WRA9267
Outlet location
SE0909020670 (OS grid reference) · View on Apple Maps
WFD catchment
Black Brook from Source to River Calder (GB104027062570)
2024 spills / hours
8 / 2.3
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 2.3 hours spilling →
Holywell Brook 6 2.3 down 25% 100%
Limekiln Lane CSO
Overflow on sewer network
Company site name
LIMEKILN LANE/NO 2 CSO
EA ID / permit
YWS01144 · WADC1075
Outlet location
TA1940967722 (OS grid reference) · View on Apple Maps
WFD catchment
Yorkshire South (GB640402491000)
Bathing water
Bridlington North Beach
2024 spills / hours
3 / 1.3
Long-term average
2.4 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.2 hours spilling →
North Sea 2 2.2 down 33% 100%
Hebden Wastewater Treatment Works
Storm tank at sewage works
Sewage works
Hebden
Company site name
HEBDEN/STW
EA ID / permit
YWS00190 · 27/19/0083
Outlet location
SE0269162177 (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
50 / 368
Long-term average
29.8 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Bathing Water and/or Shellfish Water investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.1 hours spilling →
River Wharfe 2 2.1 down 96% 100%
Hoylandswaine STW
Inlet overflow at sewage works
Sewage works
Hoylandswaine
Company site name
HOYLANDSWAINE/STW/6XDWF OVERFLOW
EA ID / permit
YWS00124 · 2344
Outlet location
SE2690005700 (OS grid reference) · View on Apple Maps
WFD catchment
Silkstone Beck from Source to Cawthorne Dyke (GB104027057560)
2024 spills / hours
31 / 127
Long-term average
90.8 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.0 hours spilling →
Ellhirst Beck 8 2.0 down 74% 100%
Ripley NO2 CSO
Overflow on sewer network
Company site name
RIPLEY/NO 2 CSO
EA ID / permit
YWS00247 · 27/21/0170
Outlet location
SE2825059975 (OS grid reference) · View on Apple Maps
WFD catchment
Thornton Beck Catch (Trib of Nidd) (GB104027063850)
2024 spills / hours
11 / 7.5
Long-term average
2.7 spills a year (monitored since 2020)
Investigation
Operational investigation completed, Bathing Water and/or Shellfish Water investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.0 hours spilling →
Ripley Beck 3 2.0 down 73% 100%
Skipton Road 109 Csp
Overflow on sewer network
Company site name
SKIPTON ROAD 109/CSO
EA ID / permit
YWS00255 · 27/21/0211
Outlet location
SE2943056905 (OS grid reference) · View on Apple Maps
WFD catchment
Oak Beck Catchment (Trib of Nidd) (GB104027063760)
2024 spills / hours
11 / 6.0
Long-term average
10.0 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 2.0 hours spilling →
Oak Beck via A Public Sewer 6 2.0 down 45% 100%
Buurnt Howe Sewage Pumping Station*
Storm discharge at pumping station
Company site name
BURNT HOWE RAVENSCAR/CSO
EA ID / permit
YWS00506 · 27/26/0035
Outlet location
NZ9881601317 (OS grid reference) · View on Apple Maps
WFD catchment
Esk & Yorkshire Coast Ravenscar (GB40402G702300)
2024 spills / hours
25 / 53
Long-term average
19.3 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.0 hours spilling →
Groundwater 3 2.0 down 88% 100%
Nether Silton CSO
Overflow on sewer network
Company site name
NETHER SILTON/CSO
EA ID / permit
YWS00988 · EPRUP3225GQ
Outlet location
SE4548492079 (OS grid reference) · View on Apple Maps
WFD catchment
Broad Beck from Source to Cod Beck (GB104027068950)
2024 spills / hours
6 / 11
Long-term average
12.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.0 hours spilling →
Trib of Old Beck 7 2.0 up 17% 100%
Eastgate CSO
Overflow on sewer network
Company site name
EASTGATE/CSO
EA ID / permit
YWS01011 · NPSWQD005831
Outlet location
SE8067082770 (OS grid reference) · View on Apple Maps
WFD catchment
The Syme form Source to Thornton/Dalby/Staindale (GB104027068460)
2024 spills / hours
12 / 14
Long-term average
11.5 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.0 hours spilling →
Outgang Drain 7 2.0 down 42% 100%
Seckar Sewage Treatment Works
Inlet overflow at sewage works
Sewage works
Seckar
Company site name
SECKAR/STW/6XDWF OVERFLOW
EA ID / permit
YWS01025 · NPSWQD009922
Outlet location
SE3318714322 (OS grid reference) · View on Apple Maps
WFD catchment
Owler Beck from Source to River Calder (GB104027062530)
2024 spills / hours
– / –
Long-term average
12.0 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.0 hours spilling →
Lawns Dike, Trib Newmiller Dam 4 2.0 92%
Yws Unknown Sites Default
Storm discharge at pumping station
Company site name
AIRTON/SPS
EA ID / permit
YWS01078 · S/RD/100
Outlet location
SD9022059360 (OS grid reference) · View on Apple Maps
WFD catchment
River Aire from Malham Beck to Otterburn Beck (GB104027063100)
2024 spills / hours
3 / 3.5
Long-term average
1.0 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.0 hours spilling →
River Aire 2 2.0 down 33% 100%
Town Gate Calver CSO
Overflow on sewer network
Company site name
TOWN GATE CALVER/CSO
EA ID / permit
YWS01199 · WADC1435
Outlet location
SE2096436920 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
19 / 14
Long-term average
22.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.0 hours spilling →
Culv Trib Leeds/Lpool Canal 4 2.0 down 79% 93%
Sunnybank CSO
Overflow on sewer network
Company site name
SUNNYBANK/CSO
EA ID / permit
YWS01904 · WRA8661
Outlet location
SE0886120857 (OS grid reference) · View on Apple Maps
WFD catchment
Black Brook from Source to River Calder (GB104027062570)
2024 spills / hours
6 / 1.5
Long-term average
6.3 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.0 hours spilling →
Black Brook 6 2.0 no change 100%
Calder Bank Road CSO
Overflow on sewer network
Company site name
CALDER BANK ROAD/CSO
EA ID / permit
YWS02062 · WRA9168
Outlet location
SE2401021055 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Colne to River Chald (GB104027062631)
2024 spills / hours
2 / 10
Long-term average
2.7 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Resolved - January after reporting year
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 2.0 hours spilling →
River Calder 3 2.0 up 50% 84%
Spen Lane 184 CSO
Overflow on sewer network
Company site name
SPEN LANE 184/CSO
EA ID / permit
YWS01833 · WRA8534
Outlet location
SE2609736717 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
7 / 4.4
Long-term average
33.7 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 1.9 hours spilling →
Culverted Trib of River Aire 5 1.9 down 29% 100%
Vesper Lane CSO
Overflow on sewer network
Company site name
VESPER LANE/CSO
EA ID / permit
YWS02077 · WRA9183
Outlet location
SE2559536244 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
18 / 2.5
Long-term average
20.2 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 1.8 hours spilling →
River Aire 13 1.8 down 28% 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.