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
Burnley Road Cornholme CSO
Overflow on sewer network
Company site name
BURNLEY RD CORNHOLME/CSO
EA ID / permit
YWS01953 · WRA8747
Outlet location
SD9135326087 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from Source to Walsden Water (GB104027062660)
2024 spills / hours
30 / 113
Long-term average
36.8 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 69 hours spilling →
River Calder 16 69 down 47% 100%
Millgate Masham CSO
Overflow on sewer network
Company site name
MILLGATE MASHAM/CSO
EA ID / permit
YWS00318 · 27/22/0162
Outlet location
SE2271480804 (OS grid reference) · View on Apple Maps
WFD catchment
Ure from Thornton Steward Beck to River Skell (GB104027069461)
2024 spills / hours
139 / 916
Long-term average
93.8 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 68 hours spilling →
Tributary of River Ure 30 68 down 78% 93%
York Road Barbly NO2 CSO
Overflow on sewer network
Company site name
YORK ROAD BARLBY/NO 2 CSO
EA ID / permit
YWS00424 · 27/24/0296
Outlet location
SE6308033510 (OS grid reference) · View on Apple Maps
WFD catchment
Ouse from R Wharfe to Upper Humber (GB104027064270)
2024 spills / hours
24 / 105
Long-term average
22.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 68 hours spilling →
Unnamed Trib of Cherry Orchard 21 68 down 13% 100%
Bective Mills CSO
Overflow on sewer network
Company site name
BECTIVE MILLS/CSO
EA ID / permit
YWS00847 · C4278
Outlet location
SE3121821027 (OS grid reference) · View on Apple Maps
WFD catchment
River Chald from Source to River Calder (GB104027062620)
2024 spills / hours
37 / 60
Long-term average
56.8 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 68 hours spilling →
Alverthorpe Beck 37 68 no change 100%
Horsforth Ring Road CSO
Overflow on sewer network
Company site name
HORSFORTH RING ROAD/CSO
EA ID / permit
YWS00805 · 779
Outlet location
SE2531237683 (OS grid reference) · View on Apple Maps
WFD catchment
Carlton Beck from Source to River Aire (GB104027062920)
2024 spills / hours
57 / 81
Long-term average
64.0 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 68 hours spilling →
Oil Mill Beck 43 68 down 25% 98%
Causeway Side 12 CSO
Overflow on sewer network
Company site name
CAUSEWAY SIDE 12/CSO
EA ID / permit
YWS01405 · WRA7459
Outlet location
SE0974014010 (OS grid reference) · View on Apple Maps
WFD catchment
River Colne from Wessenden Brook to R Holme (GB104027063330)
2024 spills / hours
86 / 262
Long-term average
60.5 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 68 hours spilling →
Culv'D Trib of Hoyle House Brk 17 68 down 80% 93%
Knostrop CSO
Overflow on sewer network
Company site name
KNOSTROP/COLTON CSO
EA ID / permit
YWS01616 · WRA8145
Outlet location
SE3378031940 (OS grid reference) · View on Apple Maps
WFD catchment
Wyke Beck from Source to River Aire (GB104027062880)
2024 spills / hours
16 / 76
Long-term average
10.0 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 68 hours spilling →
Wyke Beck 12 68 down 25% 100%
Yws Unknown Sites Default
Overflow on sewer network
Company site name
ABBEYDALE ROAD 62/1 CSO
EA ID / permit
YWS00813 · 920
Outlet location
SK3444084450 (OS grid reference) · View on Apple Maps
WFD catchment
River Sheaf from Source to River Porter (GB104027057750)
2024 spills / hours
36 / 84
Long-term average
23.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 68 hours spilling →
River Sheaf 24 68 down 33% 100%
Ferriby High Road SPS
Storm discharge at pumping station
Company site name
FERRIBY HIGH RD/CSO
EA ID / permit
YWS01554 · WRA8007
Outlet location
TA0046225542 (OS grid reference) · View on Apple Maps
WFD catchment
HUMBER MIDDLE (GB530402609202)
2024 spills / hours
48 / 113
Long-term average
49.5 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 68 hours spilling →
River Humber 9 68 down 81% 100%
Stanningley CSO
Overflow on sewer network
Company site name
STANNINGLEY/CSO
EA ID / permit
YWS01863 · WRA8576
Outlet location
SE2202334371 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
54 / 76
Long-term average
53.0 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 68 hours spilling →
Farsley Beck (Culverted) 49 68 down 9% 97%
Almsford Avenue CSO
Overflow on sewer network
Company site name
ALMSFORD AVENUE/CSO
EA ID / permit
YWS00232 · 27/21/0127
Outlet location
SE3166252963 (OS grid reference) · View on Apple Maps
WFD catchment
Crimple Beck from Source to Park Beck (GB104027063741)
2024 spills / hours
42 / 112
Long-term average
45.7 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 67 hours spilling →
Trib of Crimple Beck 33 67 down 21% 99%
Chatsworth Road N471 CSO
Overflow on sewer network
Company site name
CHATSWORTH ROAD N471/CSO
EA ID / permit
YWS00848 · C4388
Outlet location
SK3632070550 (OS grid reference) · View on Apple Maps
WFD catchment
Hipper from Source to River Rother (GB104027057660)
2024 spills / hours
45 / 102
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 67 hours spilling →
River Hipper 30 67 down 33% 93%
Bentley Rise PS & CSO
Storm discharge at pumping station
Company site name
BENTLEY RISE/CSO
EA ID / permit
YWS01435 · WRA7543
Outlet location
SE5665004860 (OS grid reference) · View on Apple Maps
WFD catchment
Bentley Mill Stream (GB104027057541)
2024 spills / hours
16 / 106
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 67 hours spilling →
Fowler Bridge Drain 12 67 down 25% 100%
Middleton Tyas STW
Storm tank at sewage works
Sewage works
Middleton Tyas
Company site name
MIDDLETON TYAS/NO 2 STW
EA ID / permit
YWS00344 · 27/23/0181
Outlet location
NZ2338006220 (OS grid reference) · View on Apple Maps
WFD catchment
Scorton Beck from Source to River Swale (GB104027069160)
2024 spills / hours
44 / 270
Long-term average
44.8 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 67 hours spilling →
Unnamed Trib Cow Lane Beck 20 67 down 55% 100%
Roundhay 110 CSO
Overflow on sewer network
Company site name
ROUNDHAY 110/CSO
EA ID / permit
YWS01572 · WRA8088
Outlet location
SE3358937179 (OS grid reference) · View on Apple Maps
WFD catchment
Wyke Beck from Source to River Aire (GB104027062880)
2024 spills / hours
43 / 66
Long-term average
19.5 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 67 hours spilling →
Wyke Beck (Culverted) 37 67 down 14% 100%
Skeeby Sewage Pumping Station
Storm discharge at pumping station
Company site name
SKEEBY/CSO
EA ID / permit
YWS00341 · 27/23/0161
Outlet location
NZ2047002760 (OS grid reference) · View on Apple Maps
WFD catchment
Skeeby/Holme/Dalton Bk from Source to River Swale (GB104027069180)
2024 spills / hours
52 / 572
Long-term average
38.3 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 67 hours spilling →
Skeeby Beck 16 67 down 69% 100%
Yorkshire Water Services Ltd
Overflow on sewer network
Company site name
WATH ON DEARNE/CSO
EA ID / permit
YWS01412 · WRA7477
Outlet location
SE4446001100 (OS grid reference) · View on Apple Maps
WFD catchment
River Dearne Darfield STW to River Don (GB104027063173)
2024 spills / hours
0 / 0.0
Long-term average
2.8 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Resolved - Sep
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 67 hours spilling →
Brook Dike 17 67 up from 0 88%
Thornhill Syphon CSO
Overflow on sewer network
Company site name
THORNHILL DEWSBURY/2 CSO
EA ID / permit
YWS02063 · WRA9169
Outlet location
SE2549020190 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Colne to River Chald (GB104027062631)
2024 spills / hours
0 / 0.0
Long-term average
12.4 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 67 hours spilling →
River Calder 16 67 up from 0 100%
Lower Poppleton Lane SPS
Storm discharge at pumping station
Company site name
LOWER POPPLETON/CSO
EA ID / permit
YWS01016 · NPSWQD006095
Outlet location
SE5690053582 (OS grid reference) · View on Apple Maps
WFD catchment
Ouse from River Nidd to Stillingfleet Beck (GB104027069593)
2024 spills / hours
41 / 76
Long-term average
16.6 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 67 hours spilling →
Unnamed Trib of River Ouse 23 67 down 44% 100%
Appleton Wiske STW
Inlet overflow at sewage works
Sewage works
Appleton Wiske
Company site name
APPLETON WISKE/STW/6XDWF OVERFLOW
EA ID / permit
YWS00379 · 27/23/0302
Outlet location
NZ3866004540 (OS grid reference) · View on Apple Maps
WFD catchment
River Wiske from Source to Trenholme Stell (GB104027069550)
2024 spills / hours
20 / 146
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 66 hours spilling →
River Wiske 13 66 down 35% 100%
Rooms Lane No 2 CSO
Overflow on sewer network
Company site name
ROOMS LANE/NO 2 CSO
EA ID / permit
YWS01714 · WRA8260
Outlet location
SE2585829820 (OS grid reference) · View on Apple Maps
WFD catchment
Milshaw Beck from Source to Low/Wortley/Pudsey Bks (GB104027062750)
2024 spills / hours
35 / 104
Long-term average
34.7 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 66 hours spilling →
Clvrtd Trib of Dean Beck 30 66 down 14% 100%
Willow Road CSO
Overflow on sewer network
Company site name
WILLOW ROAD/CSO
EA ID / permit
YWS01849 · 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
37 / 70
Long-term average
40.5 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 66 hours spilling →
River Aire 27 66 down 27% 100%
Deep Lane Sheffield CSO
Overflow on sewer network
Company site name
DEEP LANE SHEFFIELD/CSO
EA ID / permit
YWS00837 · C4159
Outlet location
SK3757093580 (OS grid reference) · View on Apple Maps
WFD catchment
Blackburn Brook from Source to River Don (GB104027057440)
2024 spills / hours
27 / 76
Long-term average
14.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 66 hours spilling →
Blackburn Brook 21 66 down 22% 100%
Brough No 1 SPS
Overflow on sewer network
Company site name
BROUGH/CSO
EA ID / permit
YWS01721 · WRA8283
Outlet location
SE9363026200 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
8 / 11
Long-term average
90.0 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 66 hours spilling →
River Humber 44 66 up 450% 100%
Longroyd Manch Road CSO
Overflow on sewer network
Company site name
LONGROYD MANCH ROAD/CSO
EA ID / permit
YWS02169 · WRA9302
Outlet location
SE1356616073 (OS grid reference) · View on Apple Maps
WFD catchment
River Colne from Wessenden Brook to R Holme (GB104027063330)
2024 spills / hours
11 / 4.0
Long-term average
11.5 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Monitor below 90%
Sensor failure / issue · Resolved - Jun
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 66 hours spilling →
River Colne 47 66 up 327% 57%
Belgrave Road Bridge CSO
Overflow on sewer network
Company site name
BELGRAVE RD BRID/CSO
EA ID / permit
YWS00930 · EPRAB3895RU
Outlet location
TA1888065320 (OS grid reference) · View on Apple Maps
WFD catchment
Yorkshire South (GB640402491000)
Bathing water
Bridlington South Beach
2024 spills / hours
34 / 72
Long-term average
12.0 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 66 hours spilling →
North Sea 37 66 up 9% 100%
Burrill Sewage Treatment Works
Inlet overflow at sewage works
Sewage works
Burrill
Company site name
BURRILL/NO 2 STW
EA ID / permit
YWS00362 · 27/23/0254
Outlet location
SE2425087000 (OS grid reference) · View on Apple Maps
WFD catchment
Old Stell Catchment (trib of Bedale Beck) (GB104027068841)
2024 spills / hours
23 / 40
Long-term average
34.0 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 66 hours spilling →
Burrill Beck 37 66 up 61% 100%
Jamesville Way CSO
Overflow on sewer network
Company site name
JAMESVILLE WAY/CSO
EA ID / permit
YWS00377 · 27/23/0286
Outlet location
SE4020075500 (OS grid reference) · View on Apple Maps
WFD catchment
Swale from Wiske to River Ure (GB104027069591)
2024 spills / hours
20 / 47
Long-term average
25.5 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 66 hours spilling →
Trib of River Swale 31 66 up 55% 100%
Wortley East WwTW
Inlet overflow at sewage works
Sewage works
Wortley East
Company site name
WORTLEY EAST/STW
EA ID / permit
YWS00752 · 3717(SS)
Outlet location
SK3130099700 (OS grid reference) · View on Apple Maps
WFD catchment
Rockley Dike from Source to River Dove (GB104027057480)
2024 spills / hours
66 / 183
Long-term average
69.8 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 66 hours spilling →
Highwood Dike 38 66 down 42% 100%
Lake Side Lane SSO
Overflow on sewer network
Company site name
KIRKHEATON TANK/CSO
EA ID / permit
YWS00747 · 3681
Outlet location
SE1815017250 (OS grid reference) · View on Apple Maps
WFD catchment
Fenay beck from Source to River Colne (GB104027063340)
2024 spills / hours
9 / 43
Long-term average
9.2 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 65 hours spilling →
Oxfield Beck 9 65 no change 100%
Abbeydale Road 62 NO2 CSO
Overflow on sewer network
Company site name
ABBEYDALE ROAD 62/2 CSO
EA ID / permit
YWS00932 · EPRCB3597EV
Outlet location
SK3444284447 (OS grid reference) · View on Apple Maps
WFD catchment
River Sheaf from Source to River Porter (GB104027057750)
2024 spills / hours
10 / 65
Long-term average
13.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 65 hours spilling →
River Sheaf 7 65 down 30% 100%
High Street Swallownest CSO
Overflow on sewer network
Company site name
HIGH ST SWALLOWNEST/CSO
EA ID / permit
YWS01017 · NPSWQD006096
Outlet location
SK4533085340 (OS grid reference) · View on Apple Maps
WFD catchment
Pigeon Bridge Brook from Source to River Rother (GB104027057730)
2024 spills / hours
43 / 142
Long-term average
37.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 65 hours spilling →
Don 22 65 down 49% 100%
Worry Goose Lane CSO at SPS
Overflow on sewer network
Company site name
WORRY GOOSE LANE/CSO
EA ID / permit
YWS01695 · WRA8239
Outlet location
SK4600890178 (OS grid reference) · View on Apple Maps
WFD catchment
Rother, Doe Lea to Don (GB104027057772)
2024 spills / hours
22 / 57
Long-term average
27.5 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 65 hours spilling →
Trib Whiston Brook via Pub Swr 21 65 down 5% 100%
Lowdale Lane No 2 CSO
Overflow on sewer network
Company site name
LOWDALE LANE/NO 2 CSO
EA ID / permit
YWS00604 · 27/29/0089
Outlet location
NZ8695507900 (OS grid reference) · View on Apple Maps
WFD catchment
Little Beck/May Beck catchment (trib of Esk) (GB104027068100)
2024 spills / hours
29 / 108
Long-term average
19.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 64 hours spilling →
Iburndale Beck 19 64 down 34% 100%
Crambe STW
Inlet overflow at sewage works
Sewage works
Crambe
Company site name
CRAMBE/STW
EA ID / permit
YWS00567 · 27/28/0171
Outlet location
SE7353064750 (OS grid reference) · View on Apple Maps
WFD catchment
River Derwent from Kirkham to Elvington Beck (GB104027068312)
2024 spills / hours
17 / 103
Long-term average
14.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 64 hours spilling →
Unnamed Trib of River Derwent 11 64 down 35% 100%
Yorkshire Water Services Limited, T
Overflow on sewer network
Company site name
TODWICK/NO 3 CSO
EA ID / permit
YWS01322 · WRA6606
Outlet location
SK4871084020 (OS grid reference) · View on Apple Maps
WFD catchment
Pigeon Bridge Brook from Source to River Rother (GB104027057730)
2024 spills / hours
13 / 50
Long-term average
10.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 64 hours spilling →
Todwick Beck 10 64 down 23% 100%
Dick Lne CSO & New Lne SPS
Overflow on sewer network
Company site name
DICK LANE/NO 2 CSO
EA ID / permit
YWS01400 · WRA7450
Outlet location
SE1971533266 (OS grid reference) · View on Apple Maps
WFD catchment
Low/Wortley/Pudsey Bks from Source to Milshaw Beck (GB104027062830)
2024 spills / hours
34 / 155
Long-term average
8.8 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 64 hours spilling →
Cul Trib of Tyersal Beck 19 64 down 44% 100%
Carr Gate Beck CSO
Overflow on sewer network
Company site name
CARR GATE BECK/NO 2 CSO
EA ID / permit
YWS01546 · WRA7995
Outlet location
SE3110024130 (OS grid reference) · View on Apple Maps
WFD catchment
River Chald from Source to River Calder (GB104027062620)
2024 spills / hours
27 / 49
Long-term average
30.7 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 64 hours spilling →
Carr Gate Beck 31 64 up 15% 100%
Charles Street No 2 CSO
Overflow on sewer network
Company site name
CHARLES STREET/NO 2 CSO
EA ID / permit
YWS01866 · WRA8579
Outlet location
SE3042117474 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Colne to River Chald (GB104027062631)
2024 spills / hours
13 / 40
Long-term average
16.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 64 hours spilling →
Old Mill Stream 19 64 up 46% 100%
Wellfield Terrace CSO
Overflow on sewer network
Company site name
WELLFIELD TERRACE/2 CSO
EA ID / permit
YWS00791 · 56
Outlet location
SE2450029370 (OS grid reference) · View on Apple Maps
WFD catchment
Milshaw Beck from Source to Low/Wortley/Pudsey Bks (GB104027062750)
2024 spills / hours
38 / 63
Long-term average
36.5 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 63 hours spilling →
Trib of Farnley Wood Beck 37 63 down 3% 100%
Norwood SPS
Storm discharge at pumping station
Company site name
NORWOOD/CSO
EA ID / permit
YWS01236 · WADC320
Outlet location
SK4640081910 (OS grid reference) · View on Apple Maps
WFD catchment
Rother, Doe Lea to Don (GB104027057772)
2024 spills / hours
18 / 52
Long-term average
26.2 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 63 hours spilling →
County Dyke to River Rother 21 63 up 17% 100%
Anchor Street CSO
Overflow on sewer network
Company site name
ANCHOR STREET/CSO
EA ID / permit
YWS02066 · WRA9172
Outlet location
SE1520817129 (OS grid reference) · View on Apple Maps
WFD catchment
River Colne from River Holme to River Calder (GB104027062550)
2024 spills / hours
47 / 67
Long-term average
44.3 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 63 hours spilling →
River Colne 34 63 down 28% 100%
Millfield Lane CSO
Overflow on sewer network
Company site name
MILLFIELD LANE YORK/CSO
EA ID / permit
YWS00479 · 27/24/0466
Outlet location
SE5661053910 (OS grid reference) · View on Apple Maps
WFD catchment
Ouse from River Nidd to Stillingfleet Beck (GB104027069593)
2024 spills / hours
33 / 88
Long-term average
35.5 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 63 hours spilling →
Trib River Ouse 29 63 down 12% 100%
Kettlewell STW
Storm tank at sewage works
Sewage works
Kettlewell
Company site name
KETTLEWELL/STW
EA ID / permit
YWS00186 · 27/19/0078
Outlet location
SD9691071980 (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
20 / 149
Long-term average
29.3 spills a year (monitored since 2020)
Investigation
UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 63 hours spilling →
River Wharfe 20 63 no change 100%
Blakey Lane No 2 CSO
Overflow on sewer network
Company site name
BLAKEY LANE/NO 2 CSO
EA ID / permit
YWS00358 · 27/23/0245
Outlet location
SE4350681143 (OS grid reference) · View on Apple Maps
WFD catchment
Cod Beck from Spital Beck to River Swale (GB104027068820)
2024 spills / hours
20 / 24
Long-term average
24.7 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 63 hours spilling →
Cod Beck 35 63 up 75% 93%
St Augustines Avenue CSO
Overflow on sewer network
Company site name
ST AUGUSTINES AVENUE/CSO
EA ID / permit
YWS01792 · WRA8469
Outlet location
SK3844069970 (OS grid reference) · View on Apple Maps
WFD catchment
Rother from Redleadmill Brook to Spital Brook (GB104027057630)
2024 spills / hours
24 / 23
Long-term average
20.7 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 63 hours spilling →
River Rother 22 63 down 8% 100%
Alport Road CSO
Overflow on sewer network
Company site name
ALPORT ROAD/CSO
EA ID / permit
YWS02114 · WRA9221
Outlet location
SK4034284331 (OS grid reference) · View on Apple Maps
WFD catchment
Shire Brook (GB104027057773)
2024 spills / hours
71 / 124
Long-term average
110.2 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation completed, Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 63 hours spilling →
Tributary of Shire Brook 35 63 down 51% 96%
Falding Street CSO
Overflow on sewer network
Company site name
FALDING STREET/CSO
EA ID / permit
YWS00661 · 3094
Outlet location
SK3562896047 (OS grid reference) · View on Apple Maps
WFD catchment
Blackburn Brook from Source to River Don (GB104027057440)
2024 spills / hours
13 / 36
Long-term average
6.8 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 62 hours spilling →
Blackburn Brook 17 62 up 31% 100%
Bradford Road 5 CSO
Overflow on sewer network
Company site name
BRADFORD ROAD 5/CSO
EA ID / permit
YWS01897 · WRA8643
Outlet location
SE0801642087 (OS grid reference) · View on Apple Maps
WFD catchment
Aire (R Worth to Gill Beck) (GB104027063034)
2024 spills / hours
54 / 77
Long-term average
60.2 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 62 hours spilling →
Tributary of the River Aire 42 62 down 22% 100%
West Bars Roundabout CSO
Overflow on sewer network
Company site name
WEST BARS ROUNDABOUT/CSO
EA ID / permit
YWS01200 · WADC1470
Outlet location
SK3767671016 (OS grid reference) · View on Apple Maps
WFD catchment
Hipper from Source to River Rother (GB104027057660)
2024 spills / hours
30 / 59
Long-term average
22.5 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 62 hours spilling →
Holme Brook / River Hipper 26 62 down 13% 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.