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
Carrhouse Lane Cayton No 2 CSO
Overflow on sewer network
Company site name
CARRHOUSE LN CAYTON/2 CSO
EA ID / permit
YWS00538 · 27/27/0137
Outlet location
TA0470583184 (OS grid reference) · View on Apple Maps
WFD catchment
Eastfield Drain Lower to River Hertford (GB104027073281)
2024 spills / hours
32 / 205
Long-term average
26.8 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
UWWTR improvement ongoing
Volume & pollution
Estimate from 164 hours spilling →
River Hertford 25 164 down 22% 95%
Knostrop WwTW
Inlet overflow at sewage works
Sewage works
Knostrop
Company site name
KNOSTROP/H LEVEL STW/6XDWF OVERFLOW
EA ID / permit
YWS01346 · WRA6924
Outlet location
SE3378031930 (OS grid reference) · View on Apple Maps
WFD catchment
Wyke Beck from Source to River Aire (GB104027062880)
2024 spills / hours
101 / 536
Long-term average
78.8 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 163 hours spilling →
Wyke Beck and the River Aire 30 163 down 70% 100%
Hammerton St/Leeds Rd/Harris St CSO
Overflow on sewer network
Company site name
GEORGE ST BRADFORD/SCC
EA ID / permit
YWS01677 · WRA8215
Outlet location
SE1685032920 (OS grid reference) · View on Apple Maps
WFD catchment
Bradford Beck (Clayton Bk to R Aire) (GB104027062862)
2024 spills / hours
16 / 44
Long-term average
16.0 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 163 hours spilling →
East Brook (Culverted) 24 163 up 50% 99%
Trafalgar Street CSO
Overflow on sewer network
Company site name
TRAFALGAR STREET/CSO
EA ID / permit
YWS00018 · 1282
Outlet location
SE6022750108 (OS grid reference) · View on Apple Maps
WFD catchment
Ouse from River Nidd to Stillingfleet Beck (GB104027069593)
2024 spills / hours
50 / 689
Long-term average
94.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 163 hours spilling →
River Ouse 22 163 down 56% 100%
Primrose Lane CSO
Overflow on sewer network
Company site name
PRIMROSE LANE/CSO
EA ID / permit
YWS01556 · WRA8041
Outlet location
SE1230738139 (OS grid reference) · View on Apple Maps
WFD catchment
Aire (R Worth to Gill Beck) (GB104027063034)
2024 spills / hours
94 / 435
Long-term average
74.2 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 completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 163 hours spilling →
River Aire 52 163 down 45% 100%
Permit applied for
Inlet overflow at sewage works
Sewage works
Permit Applied For
Company site name
NEWSHAM/STW
EA ID / permit
YWS02291 · Permit applied for
Outlet location
NZ1123209943 (OS grid reference) · View on Apple Maps
WFD catchment
Skeeby/Holme/Dalton Bk from Source to River Swale (GB104027069180)
2024 spills / hours
22 / 110
Long-term average
29.8 spills a year (monitored since 2022)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 162 hours spilling →
Permit applied for 21 162 down 5% 100%
Askern Sewage Pumping Station
Storm discharge at pumping station
Company site name
ASKERN/CSO
EA ID / permit
YWS00772 · 3817
Outlet location
SE5656014370 (OS grid reference) · View on Apple Maps
WFD catchment
Went from Hoyle Mill Stream to Blowell Drain (GB104027063360)
2024 spills / hours
22 / 53
Long-term average
30.2 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 161 hours spilling →
Great Common Drain 37 161 up 68% 100%
Roundwood Glen No 2 CSO
Overflow on sewer network
Company site name
ROUNDWOOD GLEN/NO 2 CSO
EA ID / permit
YWS00029 · 1501
Outlet location
SE1941937002 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
80 / 240
Long-term average
41.3 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 161 hours spilling →
Carr Beck 54 161 down 33% 100%
Woodhouse Lane CSO
Overflow on sewer network
Company site name
WOODHOUSE LANE/CSO
EA ID / permit
YWS00141 · 2479
Outlet location
SE1588321823 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from Ryburn Confluence to River Colne (GB104027062642)
2024 spills / hours
71 / 104
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 completed, UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 161 hours spilling →
River Calder 77 161 up 8% 100%
Morrisons Car Park CSO
Overflow on sewer network
Company site name
MORRISONS CAR PARK/CSO
EA ID / permit
YWS00877 · C5094
Outlet location
SE2135223321 (OS grid reference) · View on Apple Maps
WFD catchment
Spen Beck from Source to River Calder (GB104027062710)
2024 spills / hours
59 / 229
Long-term average
67.2 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Monitor below 90%
Power 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 160 hours spilling →
River Spen 43 160 down 27% 53%
Holmpton STW
Inlet overflow at sewage works
Sewage works
Holmpton
Company site name
HOLMPTON/STW
EA ID / permit
YWS01744 · WRA8395
Outlet location
TA3662023800 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
80 / 668
Long-term average
95.7 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 160 hours spilling →
Unnamed Trib of Nevills Drain 41 160 down 49% 100%
Hunshelf Road No 2 CSO
Overflow on sewer network
Company site name
HUNSHELF ROAD/NO 2 CSO
EA ID / permit
YWS01826 · WRA8524
Outlet location
SK2730498452 (OS grid reference) · View on Apple Maps
WFD catchment
Little Don from Source to River Don (GB104027057460)
2024 spills / hours
86 / 461
Long-term average
52.2 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 160 hours spilling →
Little Don River 38 160 down 56% 98%
Knostrop WwTW
Inlet overflow at sewage works
Sewage works
Knostrop
Company site name
KNOSTROP/L LEVEL STW/6XDWF OVERFLOW
EA ID / permit
YWS01348 · WRA6924
Outlet location
SE3286031380 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
27 / 150
Long-term average
127.5 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 160 hours spilling →
Wyke Beck and the River Aire 27 160 no change 100%
Bishop Monkton STW
Storm tank at sewage works
Sewage works
Bishop Monkton
Company site name
BISHOP MONKTON/NO 2 STW/3XDWF OVERFLOW
EA ID / permit
YWS00292 · 27/22/0077
Outlet location
SE3373066930 (OS grid reference) · View on Apple Maps
WFD catchment
Ure from River Skell to River Tutt (GB104027064161)
2024 spills / hours
138 / 1,514
Long-term average
69.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 159 hours spilling →
Bishop Monkton Beck 26 159 down 81% 100%
Woodhouse Mill WwTW
Inlet overflow at sewage works
Sewage works
Woodhouse Mill
Company site name
WOODHOUSE MILL/NO 2 STW
EA ID / permit
YWS00703 · 3334(SS)
Outlet location
SK4319085820 (OS grid reference) · View on Apple Maps
WFD catchment
Rother, Doe Lea to Don (GB104027057772)
2024 spills / hours
23 / 234
Long-term average
21.8 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 159 hours spilling →
River Rother 19 159 down 17% 100%
Waterton Road CSO
Overflow on sewer network
Company site name
WATERTON ROAD/CSO
EA ID / permit
YWS02096 · WRA9202
Outlet location
SE3155019857 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Colne to River Chald (GB104027062631)
2024 spills / hours
31 / 61
Long-term average
21.5 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 159 hours spilling →
Gill Syke 56 159 up 81% 100%
Bempton SPS
Storm discharge at pumping station
Company site name
BEMPTON/CSO
EA ID / permit
YWS01126 · WA6517
Outlet location
TA1935071600 (OS grid reference) · View on Apple Maps
WFD catchment
Danes Dyke (GB104026072780)
Bathing water
Danes Dyke, Flamborough
2024 spills / hours
53 / 126
Long-term average
60.0 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 159 hours spilling →
Tributary of Danes Dyke 35 159 down 34% 100%
Park View CSO
Overflow on sewer network
Company site name
PARK VIEW/CSO
EA ID / permit
YWS00308 · 27/22/0108
Outlet location
SE1126389958 (OS grid reference) · View on Apple Maps
WFD catchment
Ure from Mill Beck to Thornton Steward Beck (GB104027069464)
2024 spills / hours
55 / 268
Long-term average
52.5 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
No improvement action in reporting period
Volume & pollution
Estimate from 158 hours spilling →
Trib of River Ure 42 158 down 24% 100%
South Elmsall WwTW
Inlet overflow at sewage works
Sewage works
South Elmsall
Company site name
SOUTH ELMSALL/STW/6XDWF OVERFLOW
EA ID / permit
YWS01418 · WRA7507
Outlet location
SE4821010640 (OS grid reference) · View on Apple Maps
WFD catchment
Ea Beck from Frickley Beck to the Skell (GB104027063200)
2024 spills / hours
58 / 220
Long-term average
48.0 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 158 hours spilling →
Hemsworth Dyke 46 158 down 21% 100%
Broadway Station CSO
Storm discharge at pumping station
Company site name
BROADWAY 35/CSO
EA ID / permit
YWS00943 · EPREP3225GG
Outlet location
SE6499012610 (OS grid reference) · View on Apple Maps
WFD catchment
Don from Mill Dyke to River Ouse (GB104027064243)
2024 spills / hours
66 / 237
Long-term average
52.8 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 158 hours spilling →
River Don 55 158 down 17% 98%
Church Street Jump CSO
Overflow on sewer network
Company site name
CHURCH STREET JUMP/2 CSO
EA ID / permit
YWS01739 · WRA8384
Outlet location
SE3773100993 (OS grid reference) · View on Apple Maps
WFD catchment
Knoll Beck from Source to River Dearne (GB104027057470)
2024 spills / hours
61 / 172
Long-term average
54.5 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing
Improvement
Operational improvement completed
Volume & pollution
Estimate from 157 hours spilling →
Jump Valley Stream 45 157 down 26% 97%
Rodley Storm Tank Site
Overflow on sewer network
Company site name
RODLEY TRANSFER/SPS/6XDWF OVERFLOW
EA ID / permit
YWS01381 · WRA7372
Outlet location
SE2370036240 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
40 / 107
Long-term average
66.0 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
No improvement action in reporting period
Volume & pollution
Estimate from 156 hours spilling →
River Aire 55 156 up 38% 100%
Hunmanby Sewage Treatment Works - T
Storm tank at sewage works
Sewage works
Hunmanby T
Company site name
HUNMANBY/STW
EA ID / permit
YWS01051 · QR27/27/0017
Outlet location
TA1043077910 (OS grid reference) · View on Apple Maps
WFD catchment
Hertford from Source to River Derwent (GB104027067811)
2024 spills / hours
23 / 123
Long-term average
18.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 155 hours spilling →
Trib of River Hertford 23 155 no change 100%
Adwick No.2 STW
Storm tank at sewage works
Sewage works
Adwick
Company site name
ADWICK/NO 2 STW
EA ID / permit
YWS01434 · WRA7541
Outlet location
SE5469008050 (OS grid reference) · View on Apple Maps
WFD catchment
Ea Beck from the Skell to River Don (GB104027057591)
2024 spills / hours
32 / 207
Long-term average
30.8 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 155 hours spilling →
Mill Dike 21 155 down 34% 100%
Corn Mill No 2 CSO
Overflow on sewer network
Company site name
CORN MILL/NO 2 CSO
EA ID / permit
YWS01765 · WRA8437
Outlet location
SE1401512140 (OS grid reference) · View on Apple Maps
WFD catchment
Holme from New Mill Dike to R Colne (GB104027063301)
2024 spills / hours
41 / 104
Long-term average
40.0 spills a year (monitored since 2020)
High-spill reason (company)
Not Applicable - Ongoing Investigation
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 154 hours spilling →
River Holme 35 154 down 15% 100%
Dock Lane CSO
Overflow on sewer network
Company site name
DOCK LANE/CSO
EA ID / permit
YWS00753 · 3720
Outlet location
SE1516037580 (OS grid reference) · View on Apple Maps
WFD catchment
Bradford Beck (Clayton Bk to R Aire) (GB104027062862)
2024 spills / hours
77 / 205
Long-term average
75.3 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 153 hours spilling →
Bradford Beck 67 153 down 13% 100%
Rodley Bagley Lane CSO
Overflow on sewer network
Company site name
RODLEY BAGLEY LANE/CSO
EA ID / permit
YWS00825 · C3954
Outlet location
SE2229036300 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
73 / 188
Long-term average
71.5 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
No improvement action in reporting period
Volume & pollution
Estimate from 153 hours spilling →
Bagley Beck 62 153 down 15% 100%
Healey Road Ossett CSO
Overflow on sewer network
Company site name
HEALEY ROAD OSSETT/CSO
EA ID / permit
YWS01829 · WRA8528
Outlet location
SE2703919166 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Colne to River Chald (GB104027062631)
2024 spills / hours
66 / 190
Long-term average
52.5 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 153 hours spilling →
River Calder 58 153 down 12% 98%
Carcroft (Skellow) [1] SPS
Storm discharge at pumping station
Company site name
BENTLEY MOOR LANE/CSO
EA ID / permit
YWS02190 · YWUCD1/20
Outlet location
SE5540009400 (OS grid reference) · View on Apple Maps
WFD catchment
Ea Beck from the Skell to River Don (GB104027057591)
2024 spills / hours
19 / 38
Long-term average
75.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 152 hours spilling →
Well Sike 23 152 up 21% 96%
Darley Sewage Treatment Works
Inlet overflow at sewage works
Sewage works
Darley
Company site name
DARLEY/STW
EA ID / permit
YWS00250 · 27/21/0205
Outlet location
SE2118259656 (OS grid reference) · View on Apple Maps
WFD catchment
Nidd from Ashfoldside Beck to Birstwith (GB104027068295)
2024 spills / hours
86 / 926
Long-term average
58.7 spills a year (monitored since 2020)
High-spill reason (company)
Performance - SW Infiltration
Investigation
UWWTR investigation ongoing, Bathing Water and/or Shellfish Water investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 151 hours spilling →
Trib of River Nidd 33 151 down 62% 100%
Bishop Monkton STW
Inlet overflow at sewage works
Sewage works
Bishop Monkton
Company site name
BISHOP MONKTON/NO 2 STW/6XDWF OVERFLOW
EA ID / permit
YWS00293 · 27/22/0077
Outlet location
SE3370066800 (OS grid reference) · View on Apple Maps
WFD catchment
Ure from River Skell to River Tutt (GB104027064161)
2024 spills / hours
46 / 110
Long-term average
25.0 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 151 hours spilling →
Bishop Monkton Beck 55 151 up 20% 100%
Staithes Harbour Pumping Station
Storm discharge at pumping station
Company site name
STAITHES/CSO
EA ID / permit
YWS00583 · 27/29/0050
Outlet location
NZ7828018940 (OS grid reference) · View on Apple Maps
WFD catchment
Yorkshire North (GB650401500004)
2024 spills / hours
102 / 1,697
Long-term average
41.8 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 151 hours spilling →
Staithes Harbour - North Sea 9 151 down 91% 99%
Easingwold Sewage Treatment Works
Storm tank at sewage works
Sewage works
Easingwold
Company site name
EASINGWOLD/STW
EA ID / permit
YWS00389 · 27/24/0166
Outlet location
SE5201367511 (OS grid reference) · View on Apple Maps
WFD catchment
Alne Beck from Source to River Kyle (GB104027063910)
2024 spills / hours
32 / 276
Long-term average
40.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 151 hours spilling →
Shires Beck 27 151 down 16% 100%
Stanley Moor Road SPS
Storm discharge at pumping station
Company site name
STANLEY MOOR RD/CSO
EA ID / permit
YWS01552 · WRA8004
Outlet location
SE3432024960 (OS grid reference) · View on Apple Maps
WFD catchment
Oulton Beck from Source to River Aire (GB104027062680)
2024 spills / hours
29 / 168
Long-term average
37.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 151 hours spilling →
Lee Moor Beck (via Sw Sewer) 25 151 down 14% 100%
Lidget Fm/Lower Lidget Fm CSO'S
Overflow on sewer network
Company site name
LIDGET BRIDGE/CSO
EA ID / permit
YWS01657 · WRA8198
Outlet location
SE1306032060 (OS grid reference) · View on Apple Maps
WFD catchment
Clayton Beck (Source to Bradford Bk) (GB104027062861)
2024 spills / hours
22 / 174
Long-term average
28.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 150 hours spilling →
Bull Greave Beck 14 150 down 36% 100%
Egton Bridge Sewage Treatment Works
Inlet overflow at sewage works
Sewage works
Egton Bridge
Company site name
EGTON BRIDGE/STW
EA ID / permit
YWS00612 · 27/29/0110
Outlet location
NZ8093004930 (OS grid reference) · View on Apple Maps
WFD catchment
Esk from Sleddale Beck to Ruswarp (GB104027068150)
2024 spills / hours
42 / 197
Long-term average
43.5 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 150 hours spilling →
River Esk 37 150 down 12% 100%
Sandall WwTW
Storm tank at sewage works
Sewage works
Sandall
Company site name
SANDALL/STW
EA ID / permit
YWS00632 · 2829(T)
Outlet location
SE5981006170 (OS grid reference) · View on Apple Maps
WFD catchment
Hatfield Waste Drain Catchment (trib of Torne/Three Rivers) (GB104028064330)
2024 spills / hours
11 / 159
Long-term average
19.0 spills a year (monitored since 2021)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 150 hours spilling →
R. Don & R. Don (Old Course) 15 150 up 36% 100%
Bog Green Lane
Overflow on sewer network
Company site name
BOG GREEN LANE/CSO
EA ID / permit
YWS00972 · EPRUP3123GW
Outlet location
SE1777620220 (OS grid reference) · View on Apple Maps
WFD catchment
River Colne from River Holme to River Calder (GB104027062550)
2024 spills / hours
159 / 644
Long-term average
113.8 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Monitor below 90%
Sensor failure / issue · Resolved - Feb
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 149 hours spilling →
River Colne 54 149 down 66% 87%
Vickers Road CSO
Overflow on sewer network
Company site name
VICKERS ROAD/CSO
EA ID / permit
YWS01593 · WRA8113
Outlet location
SK3679891178 (OS grid reference) · View on Apple Maps
WFD catchment
Don from River Loxley confl to River Don Works (GB104027057412)
2024 spills / hours
71 / 163
Long-term average
65.3 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
No investigation activity in reporting period
Improvement
UWWTR improvement ongoing
Volume & pollution
Estimate from 148 hours spilling →
Firth Park Stream 57 148 down 20% 100%
Kirk Hammerton STW
Storm tank at sewage works
Sewage works
Kirk Hammerton
Company site name
KIRK HAMMERTON/STW
EA ID / permit
YWS00234 · 27/21/0139
Outlet location
SE4759055460 (OS grid reference) · View on Apple Maps
WFD catchment
River Nidd from Crimple Beck to River Ouse (GB104027068292)
2024 spills / hours
67 / 607
Long-term average
52.5 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 148 hours spilling →
River Nidd 31 148 down 54% 100%
Swillington SPS
Overflow on sewer network
Company site name
SWILLINGTON WORKS/CSO
EA ID / permit
YWS00658 · 3007
Outlet location
SE3891029900 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Wyke Beck to Fryston Beck (GB104027063036)
2024 spills / hours
43 / 175
Long-term average
50.3 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 148 hours spilling →
Fleakingley Beck 43 148 no change 100%
Stanningley Road CSO
Overflow on sewer network
Company site name
STANNINGLEY ROAD/CSO
EA ID / permit
YWS02078 · WRA9184
Outlet location
SE2631034070 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
50 / 80
Long-term average
32.7 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 147 hours spilling →
Tributary of the River Aire 53 147 up 6% 100%
Brompton Road CSO
Overflow on sewer network
Company site name
BROMPTON ROAD/CSO
EA ID / permit
YWS00678 · 3201
Outlet location
SK3802089390 (OS grid reference) · View on Apple Maps
WFD catchment
Don from River Loxley confl to River Don Works (GB104027057412)
2024 spills / hours
1 / 0.5
Long-term average
15.3 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 147 hours spilling →
River Don 59 147 up 5800% 100%
Fenay Bridge Tank CSO
Overflow on sewer network
Company site name
FENAY BRIDGE TANK/CSO
EA ID / permit
YWS01096 · WA6132
Outlet location
SE1816015520 (OS grid reference) · View on Apple Maps
WFD catchment
Fenay beck from Source to River Colne (GB104027063340)
2024 spills / hours
37 / 168
Long-term average
36.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 146 hours spilling →
Fenay Beck 30 146 down 19% 100%
Earby Sewage Treatment Works
Inlet overflow at sewage works
Sewage works
Earby
Company site name
EARBY/STW
EA ID / permit
YWS00757 · 3761(SS)
Outlet location
SD9095047240 (OS grid reference) · View on Apple Maps
WFD catchment
Earby Beck from Source to Langber beck (GB104027062980)
2024 spills / hours
83 / 260
Long-term average
70.3 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 146 hours spilling →
Earby Beck 62 146 down 25% 100%
Wharfe House CSO
Overflow on sewer network
Company site name
WHARFE HOUSE/CSO
EA ID / permit
YWS01751 · WRA8420
Outlet location
SE0646323638 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from Ryburn Confluence to River Colne (GB104027062642)
2024 spills / hours
80 / 195
Long-term average
97.0 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
No improvement action in reporting period
Volume & pollution
Estimate from 145 hours spilling →
River Calder 65 145 down 19% 99%
Cowick & Snaith CSO'S
Storm discharge at pumping station
Company site name
WEST COWICK/CSO
EA ID / permit
YWS00051 · 1732(T)
Outlet location
SE6489021520 (OS grid reference) · View on Apple Maps
WFD catchment
Don from Mill Dyke to River Ouse (GB104027064243)
2024 spills / hours
53 / 202
Long-term average
62.8 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 145 hours spilling →
Aire 44 145 down 17% 100%
St Bernards Mill No 2 CSO
Overflow on sewer network
Company site name
ST BERNARDS MILL/NO 2 CSO
EA ID / permit
YWS01522 · WRA7966
Outlet location
SE2591030035 (OS grid reference) · View on Apple Maps
WFD catchment
Milshaw Beck from Source to Low/Wortley/Pudsey Bks (GB104027062750)
2024 spills / hours
69 / 185
Long-term average
56.7 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 145 hours spilling →
Farnley Wood Beck 49 145 down 29% 100%
Jack Lane CSO
Overflow on sewer network
Company site name
JACK LANE/CSO
EA ID / permit
YWS01839 · 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
115 / 391
Long-term average
70.0 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
No improvement action in reporting period
Volume & pollution
Estimate from 144 hours spilling →
Aire and Calder Navigation 64 144 down 44% 94%
Kirton Lane SPS
Overflow on sewer network
Company site name
KIRTON LANE/CSO
EA ID / permit
YWS01497 · WRA7929
Outlet location
SE6499012620 (OS grid reference) · View on Apple Maps
WFD catchment
Don from Mill Dyke to River Ouse (GB104027064243)
2024 spills / hours
30 / 84
Long-term average
34.6 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 144 hours spilling →
River Don (Tidal) 27 144 down 10% 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.