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
Balby STW (Yws)
Inlet overflow at sewage works
Sewage works
Balby
Company site name
BALBY/STW/6XDWF OVERFLOW
EA ID / permit
YWS01082 · T/83/45405/R
Outlet location
SE5688001130 (OS grid reference) · View on Apple Maps
WFD catchment
Mother Drain from Source to R Torne (GB104028058440)
2024 spills / hours
0 / 0.0
Long-term average
3.2 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 5.3 hours spilling →
Trib of Mother Drain 4 5.3 up from 0 100%
Ramper Lane No 2 SPS
Storm discharge at pumping station
Company site name
RAMPER LANE/NO 2 CSO
EA ID / permit
YWS01473 · WRA7789
Outlet location
SE6145009280 (OS grid reference) · View on Apple Maps
WFD catchment
Hatfield Waste Drain Catchment (trib of Torne/Three Rivers) (GB104028064330)
2024 spills / hours
5 / 4.0
Long-term average
3.3 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 5.3 hours spilling →
Town End Drain 5 5.3 no change 100%
Canal Road CSO
Overflow on sewer network
Company site name
CANAL ROAD/CSO
EA ID / permit
YWS01813 · WRA8501
Outlet location
SE2774134099 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
18 / 10
Long-term average
17.8 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 5.3 hours spilling →
River Aire 11 5.3 down 39% 100%
Willow Road CSO
Overflow on sewer network
Company site name
THORNVILLE ROAD/CSO
EA ID / permit
YWS01851 · WRA8555
Outlet location
SE2793034100 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
3 / 0.8
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 5.3 hours spilling →
River Aire 7 5.3 up 133% 100%
Derby Road 242 CSO
Overflow on sewer network
Company site name
DERBY ROAD 242/CSO
EA ID / permit
YWS02000 · WRA9092
Outlet location
SK3848369695 (OS grid reference) · View on Apple Maps
WFD catchment
Rother from Redleadmill Brook to Spital Brook (GB104027057630)
2024 spills / hours
8 / 7.3
Long-term average
8.2 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 5.3 hours spilling →
River Rother via SWS 13 5.3 up 63% 100%
Castle Mills CSO
Storm discharge at pumping station
Company site name
CASTLE MILLS/CSO
EA ID / permit
YWS01094 · WA6109
Outlet location
SE6043951226 (OS grid reference) · View on Apple Maps
WFD catchment
Ouse from River Nidd to Stillingfleet Beck (GB104027069593)
2024 spills / hours
6 / 0.3
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 5.1 hours spilling →
River Ouse 10 5.1 up 67% 100%
Water Lane Flamborough CSO
Overflow on sewer network
Company site name
WATER LN FLAMBOROUGH/CSO
EA ID / permit
YWS00966 · EPRTP3827GN
Outlet location
TA2246069928 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Flamborough South Landing
2024 spills / hours
2 / 5.6
Long-term average
1.7 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 5.1 hours spilling →
Hartendale Gutter 2 5.1 no change 100%
Glapwell Back Lane CSO
Overflow on sewer network
Company site name
GLAPWELL BACK LANE/CSO
EA ID / permit
YWS00749 · 3697
Outlet location
SK4768066120 (OS grid reference) · View on Apple Maps
WFD catchment
Doe Lea from Source to Hawke Brook (GB104027057290)
2024 spills / hours
5 / 5.8
Long-term average
5.0 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 5.0 hours spilling →
Trib of Stockley Brook 6 5.0 up 20% 100%
Lodge Farm NO1 CSO
Overflow on sewer network
Company site name
LODGE FARM/NO 2 CSO
EA ID / permit
YWS01146 · WADC1086
Outlet location
SE2117537240 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
58 / 105
Long-term average
43.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 5.0 hours spilling →
Trib of Leeds/Liverpool Canal 12 5.0 down 79% 100%
Scouthill CSO
Overflow on sewer network
Company site name
SCOUTHILL/CSO
EA ID / permit
YWS01176 · WADC1314
Outlet location
SE2294620725 (OS grid reference) · View on Apple Maps
WFD catchment
Spen Beck from Source to River Calder (GB104027062710)
2024 spills / hours
0 / 0.0
Long-term average
10.5 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 5.0 hours spilling →
Spen River 1 5.0 up from 0 100%
Tidby Lane SPS
Storm discharge at pumping station
Company site name
TIBBY LANE/SPS
EA ID / permit
YWS01224 · WADC244
Outlet location
TA0027049520 (OS grid reference) · View on Apple Maps
WFD catchment
Middleton on the Wolds and Watton Beck (GB104026066980)
2024 spills / hours
6 / 12
Long-term average
5.7 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 5.0 hours spilling →
Field Drain 4 5.0 down 33% 100%
Tunstall Sewage Pumping Station
Storm discharge at pumping station
Company site name
TUNSTALL VILLAGE/CSO
EA ID / permit
YWS01255 · WADC438
Outlet location
SE2700096100 (OS grid reference) · View on Apple Maps
WFD catchment
Brough Bk/Scotton Bk from Source to River Swale (GB104027068990)
2024 spills / hours
13 / 112
Long-term average
12.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 5.0 hours spilling →
Tunstall Beck 5 5.0 down 62% 98%
North Wingfield CSO
Overflow on sewer network
Company site name
NORTH WINGFIELD/CSO
EA ID / permit
YWS01523 · WRA7967
Outlet location
SK4132465154 (OS grid reference) · View on Apple Maps
WFD catchment
Rother from Source to Redleadmill Brook (GB104027052280)
2024 spills / hours
7 / 7.0
Long-term average
11.8 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 5.0 hours spilling →
Tributary of the River Rother 7 5.0 no change 100%
Morley Street CSO
Overflow on sewer network
Company site name
MORLEY STREET/CSO
EA ID / permit
YWS01588 · WRA8107
Outlet location
SE1606032910 (OS grid reference) · View on Apple Maps
WFD catchment
Bradford Beck (Clayton Bk to R Aire) (GB104027062862)
2024 spills / hours
2 / 1.8
Long-term average
5.5 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 5.0 hours spilling →
Bradford Beck 2 5.0 no change 91%
Crosland St/Blackmoorfoot Rd CSO
Overflow on sewer network
Company site name
CROSLAND STREET/HLR
EA ID / permit
YWS01880 · WRA8603
Outlet location
SE1328016060 (OS grid reference) · View on Apple Maps
WFD catchment
River Colne from Wessenden Brook to R Holme (GB104027063330)
2024 spills / hours
27 / 15
Long-term average
18.2 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 5.0 hours spilling →
River Colne 15 5.0 down 44% 100%
Rochdale Canal CSO
Overflow on sewer network
Company site name
ROCHDALE CANAL/CSO
EA ID / permit
YWS01360 · WRA7128
Outlet location
SE0640123628 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from Ryburn Confluence to River Colne (GB104027062642)
2024 spills / hours
1 / 0.8
Long-term average
1.0 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.9 hours spilling →
River Calder 2 4.9 up 100% 100%
Station Road No. 2 CSO
Overflow on sewer network
Company site name
STATION ROAD/NO 1 CSO
EA ID / permit
YWS00181 · 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
10 / 9.0
Long-term average
7.3 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 4.8 hours spilling →
Mickle Ing Beck 4 4.8 down 60% 97%
Hambleton Road CSO
Overflow on sewer network
Company site name
HAMBLETON ROAD/CSO
EA ID / permit
YWS01035 · QC.27/21/0050
Outlet location
SE3158957202 (OS grid reference) · View on Apple Maps
WFD catchment
Nidd from Oak Beck to Low Bridge on Briggate (Knaresborough) (GB104027068297)
2024 spills / hours
2 / 3.8
Long-term average
3.5 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Resolved - January after reporting year
Investigation
Bathing Water and/or Shellfish Water investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.8 hours spilling →
Clvrt Trib of Bilton Beck 4 4.8 up 100% 85%
Ryedale New Road CSO
Overflow on sewer network
Company site name
RYEDALE NEW ROAD/CSO
EA ID / permit
YWS01193 · WADC1419
Outlet location
SE6759670731 (OS grid reference) · View on Apple Maps
WFD catchment
Wath Beck from Souce to Holbeck (GB104027068330)
2024 spills / hours
11 / 8.5
Long-term average
43.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.8 hours spilling →
Tributary of Wath Beck 9 4.8 down 18% 100%
Etton SPS
Storm discharge at pumping station
Company site name
ETTON/CSO
EA ID / permit
YWS01211 · WADC160
Outlet location
SE9809043500 (OS grid reference) · View on Apple Maps
WFD catchment
Scorborough Beck (GB104026066901)
2024 spills / hours
1 / 1.3
Long-term average
0.7 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.8 hours spilling →
Field Ditch 2 4.8 up 100% 100%
Aislaby Sewage Pumping Station
Storm discharge at pumping station
Company site name
RYEDALE AISLABY/SPS
EA ID / permit
YWS01266 · WADC6
Outlet location
SE7737085500 (OS grid reference) · View on Apple Maps
WFD catchment
Costa Beck from Source to Pickering Beck (GB104027068480)
2024 spills / hours
1 / 0.3
Long-term average
3.3 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.8 hours spilling →
Trib of Costa Beck 1 4.8 no change 100%
Boy Lane CSO
Overflow on sewer network
Company site name
BOY LANE/CSO
EA ID / permit
YWS01605 · WRA8134
Outlet location
SE0673927008 (OS grid reference) · View on Apple Maps
WFD catchment
Hebble Brook from Source to River Calder (GB104027062780)
2024 spills / hours
6 / 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 4.8 hours spilling →
Hebble Brook 5 4.8 down 17% 100%
Victoria Avenue No 2 CSO
Overflow on sewer network
Company site name
VICTORIA AVENUE/NO 2 CSO
EA ID / permit
YWS01642 · WRA8179
Outlet location
SE3378031930 (OS grid reference) · View on Apple Maps
WFD catchment
Wyke Beck from Source to River Aire (GB104027062880)
2024 spills / hours
14 / 8.3
Long-term average
11.0 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 4.8 hours spilling →
Wyke Beck 11 4.8 down 21% 100%
Fell View CSO
Overflow on sewer network
Company site name
FELL VIEW EMBSAY/NO 2 CSO
EA ID / permit
YWS01725 · WRA8309
Outlet location
SE0133053590 (OS grid reference) · View on Apple Maps
WFD catchment
Haw Beck from Source to Eller beck (GB104027063060)
2024 spills / hours
4 / 3.3
Long-term average
12.5 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.8 hours spilling →
Green Bottom Beck 2 4.8 down 50% 100%
War Memorial No 2 CSO
Overflow on sewer network
Company site name
WAR MEMORIAL/NO 2 CSO
EA ID / permit
YWS01741 · WRA8387
Outlet location
SE5460006940 (OS grid reference) · View on Apple Maps
WFD catchment
Bentley Mill Stream (GB104027057541)
2024 spills / hours
12 / 4.8
Long-term average
27.3 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.8 hours spilling →
Tributary of Langthwaite Dyke 11 4.8 down 8% 100%
Holme Lane Sypte CSO
Overflow on sewer network
Company site name
HOLME LANE SYPTE/CSO
EA ID / permit
YWS01820 · WRA8514
Outlet location
SK3279989335 (OS grid reference) · View on Apple Maps
WFD catchment
Loxley from Strines Dyke to River Don (GB104027057370)
2024 spills / hours
10 / 7.0
Long-term average
22.8 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.8 hours spilling →
River Loxley 8 4.8 down 20% 100%
Lincoln Street CSO
Overflow on sewer network
Company site name
LINCOLN STREET/CSO
EA ID / permit
YWS01933 · WRA8714
Outlet location
SK3852369623 (OS grid reference) · View on Apple Maps
WFD catchment
Rother from Redleadmill Brook to Spital Brook (GB104027057630)
2024 spills / hours
16 / 15
Long-term average
7.7 spills a year (monitored since 2020)
Monitor below 90%
Sensor failure / issue · Resolved - Mar
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.8 hours spilling →
River Rother 7 4.8 down 56% 83%
Airmyn (the Crossings) SPS
Storm discharge at pumping station
Company site name
AIRMYN CROSSING/CSO
EA ID / permit
YWS02184 · YWUCD1/1
Outlet location
SE7243725144 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Fryston Beck to River Ouse (GB104027063037)
2024 spills / hours
0 / 0.0
Long-term average
41.5 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 4.8 hours spilling →
River Aire 5 4.8 up from 0 100%
Acomb CSO
Overflow on sewer network
Company site name
ACOMB/CSO
EA ID / permit
YWS02247 · EPR/JB3498RC
Outlet location
SE5784251171 (OS grid reference) · View on Apple Maps
WFD catchment
Holgate Beck to Ouse (GB104027064001)
2024 spills / hours
10 / 4.8
Long-term average
20.0 spills a year (monitored since 2022)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.8 hours spilling →
Not matched in Ea Consents Database 17 4.8 up 70% 100%
Railway Street SPS
Storm discharge at pumping station
Company site name
RAILWAY ST SLINGSBY/CSO
EA ID / permit
YWS00490 · 27/25/0096
Outlet location
SE6980075350 (OS grid reference) · View on Apple Maps
WFD catchment
Wath Beck from Souce to Holbeck (GB104027068330)
2024 spills / hours
5 / 13
Long-term average
5.0 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.5 hours spilling →
Wath Beck 2 4.5 down 60% 100%
Stainsacre Sewage Pumping Station
Storm discharge at pumping station
Company site name
STAINSACRE/CSO
EA ID / permit
YWS00601 · 27/29/0086
Outlet location
NZ9100008310 (OS grid reference) · View on Apple Maps
WFD catchment
Rigg Mill Bk/Long Mill Bk catch (trib of Esk) (GB104027068140)
2024 spills / hours
7 / 6.5
Long-term average
4.5 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.5 hours spilling →
Intake Beck 3 4.5 down 57% 100%
Moorbridge Road CSO
Overflow on sewer network
Company site name
MOORBRIDGE ROAD/CSO
EA ID / permit
YWS01168 · WADC1261
Outlet location
SE4172502174 (OS grid reference) · View on Apple Maps
WFD catchment
Knoll Beck from Source to River Dearne (GB104027057470)
2024 spills / hours
10 / 19
Long-term average
9.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.5 hours spilling →
Knoll Beck 8 4.5 down 20% 100%
Shibden Head SPS
Overflow on sewer network
Company site name
SHIBDEN HEAD/CSO
EA ID / permit
YWS01415 · WRA7500
Outlet location
SE0969029090 (OS grid reference) · View on Apple Maps
WFD catchment
Red Beck, Source to Calder and Hebble Navigation (GB104027062720)
2024 spills / hours
– / –
Long-term average
28.5 spills a year (monitored since 2020)
Monitor below 90%
Installation set-up/design issue · Resolved - Feb
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.5 hours spilling →
Shibden Brook 4 4.5 89%
Shirley Road CSO
Overflow on sewer network
Company site name
SHIRLEY ROAD/CSO
EA ID / permit
YWS01655 · WRA8195
Outlet location
SE1487032550 (OS grid reference) · View on Apple Maps
WFD catchment
Bradford Beck (Clayton Bk to R Aire) (GB104027062862)
2024 spills / hours
1 / 0.8
Long-term average
9.0 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.5 hours spilling →
Horton Beck 6 4.5 up 500% 100%
Bower Grn/Chestnut St/Myrtle St/
Overflow on sewer network
Company site name
MULGRAVE ST 258/CSO
EA ID / permit
YWS01696 · WRA8241
Outlet location
SE1734032810 (OS grid reference) · View on Apple Maps
WFD catchment
Bradford Beck (Clayton Bk to R Aire) (GB104027062862)
2024 spills / hours
5 / 3.0
Long-term average
4.0 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 4.5 hours spilling →
East Brook (Culverted) 10 4.5 up 100% 100%
St Peters Street CSO
Overflow on sewer network
Company site name
ST PETERS STREET/CSO
EA ID / permit
YWS00074 · 1997
Outlet location
SE7908271056 (OS grid reference) · View on Apple Maps
WFD catchment
Derwent from River Rye to Kirkham (GB104027068313)
2024 spills / hours
11 / 6.7
Long-term average
25.8 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.5 hours spilling →
Mill Beck 14 4.5 up 27% 100%
Scarborough Road Brid 2 CSO
Overflow on sewer network
Company site name
SCARBOROUGH RD BRID/2 CSO
EA ID / permit
YWS01516 · WRA7960
Outlet location
TA1688067470 (OS grid reference) · View on Apple Maps
WFD catchment
Gypsey Race from Source to North Sea (GB104026072790)
Bathing water
Bridlington South Beach
2024 spills / hours
7 / 5.3
Long-term average
18.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.4 hours spilling →
Gypsey Race 9 4.4 up 29% 99%
Yafforth Sewage Pumping Station
Storm discharge at pumping station
Company site name
YAFFORTH/CSO
EA ID / permit
YWS01263 · WADC478
Outlet location
SE3460094400 (OS grid reference) · View on Apple Maps
WFD catchment
River Wiske from Trenholme Stell to River Swale (GB104027069530)
2024 spills / hours
26 / 61
Long-term average
10.5 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.3 hours spilling →
River Wiske 6 4.3 down 77% 100%
Dyke Vale Road CSO
Overflow on sewer network
Company site name
DYKE VALE ROAD 2/NO 2 CSO
EA ID / permit
YWS01372 · WRA7342
Outlet location
SK4142084080 (OS grid reference) · View on Apple Maps
WFD catchment
Shire Brook (GB104027057773)
2024 spills / hours
3 / 4.0
Long-term average
6.2 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.3 hours spilling →
Shire Brook in Culvert 7 4.3 up 133% 99%
Greenland Way CSO
Overflow on sewer network
Company site name
GREENLAND WAY/CSO
EA ID / permit
YWS01622 · WRA8158
Outlet location
SK3940188631 (OS grid reference) · View on Apple Maps
WFD catchment
Car Brook from Source to River Don (GB104027057360)
2024 spills / hours
13 / 12
Long-term average
10.0 spills a year (monitored since 2020)
Monitor below 90%
Power failure / issue · Resolved - Jul
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.3 hours spilling →
Car Brook 8 4.3 down 38% 86%
Honley Bridge No 2 CSO
Overflow on sewer network
Company site name
HONLEY BRIDGE/NO 2 CSO
EA ID / permit
YWS01766 · WRA8438
Outlet location
SE1404512015 (OS grid reference) · View on Apple Maps
WFD catchment
Holme from New Mill Dike to R Colne (GB104027063301)
2024 spills / hours
6 / 5.0
Long-term average
12.5 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 4.3 hours spilling →
River Holme 11 4.3 up 83% 100%
Permit applied for
Overflow on sewer network
Company site name
BATH ROAD/CSO
EA ID / permit
YWS02267 · Permit applied for
Outlet location
SE2176923570 (OS grid reference) · View on Apple Maps
WFD catchment
Spen Beck from Source to River Calder (GB104027062710)
2024 spills / hours
10 / 5.5
Long-term average
8.5 spills a year (monitored since 2024)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.3 hours spilling →
Permit applied for 7 4.3 down 30% 100%
Hunloke Road CSO
Overflow on sewer network
Company site name
HUNLOKE ROAD/CSO
EA ID / permit
YWS00038 · 1606
Outlet location
SK4303666393 (OS grid reference) · View on Apple Maps
WFD catchment
Spital/Calow/Muster Brook (GB104027057640)
2024 spills / hours
6 / 7.5
Long-term average
4.3 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.0 hours spilling →
Trib of Muster Brook 3 4.0 down 50% 100%
Whitecote Hill CSO
Overflow on sewer network
Company site name
WHITECOTE HILL/CSO
EA ID / permit
YWS00101 · 2226
Outlet location
SE2373936344 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
8 / 6.5
Long-term average
6.0 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.0 hours spilling →
River Aire 10 4.0 up 25% 98%
Sherburn Old Works CSO
Overflow on sewer network
Company site name
SHERBURN OLD WORKS/CSO
EA ID / permit
YWS00423 · 27/24/0295
Outlet location
SE4983733468 (OS grid reference) · View on Apple Maps
WFD catchment
Bishop Dyke Catch (Trib of Selby Dam ?) (GB104027063660)
2024 spills / hours
8 / 5.8
Long-term average
7.3 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.0 hours spilling →
Culverted Green Dike 7 4.0 down 13% 100%
St Peters Close CSO
Overflow on sewer network
Company site name
ST PETERS SQUARE/NO 2 CSO
EA ID / permit
YWS00564 · 27/28/0149
Outlet location
SE8033049020 (OS grid reference) · View on Apple Maps
WFD catchment
Pocklington Beck from Source to Bielby beck (GB104027063480)
2024 spills / hours
14 / 13
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 4.0 hours spilling →
Pocklington Beck 9 4.0 down 36% 100%
Colliery Lane CSO
Overflow on sewer network
Company site name
COLLIERY LANE/CSO
EA ID / permit
YWS00781 · 390
Outlet location
SE1691019750 (OS grid reference) · View on Apple Maps
WFD catchment
River Colne from River Holme to River Calder (GB104027062550)
2024 spills / hours
4 / 4.0
Long-term average
5.3 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.0 hours spilling →
Cinderfield Dike 2 4.0 down 50% 100%
Wales Manor Road CSO
Overflow on sewer network
Company site name
WALES MANOR ROAD/CSO
EA ID / permit
YWS00964 · EPRTP3826GC
Outlet location
SK4793583306 (OS grid reference) · View on Apple Maps
WFD catchment
Pigeon Bridge Brook from Source to River Rother (GB104027057730)
2024 spills / hours
3 / 4.0
Long-term average
4.8 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.0 hours spilling →
Tributary of Todwick Beck 9 4.0 up 200% 100%
Oakdale Harrogate CSO
Overflow on sewer network
Company site name
OAKDALE HARROGATE/CSO
EA ID / permit
YWS00979 · EPRUP3221GE
Outlet location
SE2937656228 (OS grid reference) · View on Apple Maps
WFD catchment
Oak Beck Catchment (Trib of Nidd) (GB104027063760)
2024 spills / hours
6 / 27
Long-term average
5.2 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing, Bathing Water and/or Shellfish Water investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.0 hours spilling →
Oak Beck 3 4.0 down 50% 100%
Bolton on Swale SPS
Storm discharge at pumping station
Company site name
BOLTON ON SWALE/NO 2 CSO
EA ID / permit
YWS01258 · WADC45
Outlet location
SE2530099200 (OS grid reference) · View on Apple Maps
WFD catchment
Scorton Beck from Source to River Swale (GB104027069160)
2024 spills / hours
1 / 0.5
Long-term average
3.2 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 4.0 hours spilling →
Scorton Beck 1 4.0 no change 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.