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
Woodlands Close CSO
Overflow on sewer network
Company site name
WOODLANDS CLOSE/CSO
EA ID / permit
YWS01784 · WRA8456
Outlet location
SE2032838274 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
17 / 53
Long-term average
32.7 spills a year (monitored since 2023)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Monitor below 90%
Sensor failure / issue · Resolved - Feb
Investigation
Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 680 hours spilling →
River Aire 54 680 up 218% 82%
Renishaw STW
Storm tank at sewage works
Sewage works
Renishaw
Company site name
RENISHAW/STW
EA ID / permit
YWS00140 · 2469
Outlet location
SK4483078200 (OS grid reference) · View on Apple Maps
WFD catchment
Rother, Doe Lea to Don (GB104027057772)
2024 spills / hours
124 / 1,667
Long-term average
82.5 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 679 hours spilling →
Smithy Brook 60 679 down 52% 100%
Harrogate South STW
Storm tank at sewage works
Sewage works
Harrogate South
Company site name
HARROGATE SOUTH/STW
EA ID / permit
YWS01041 · QR.27/21/0048
Outlet location
SE3787051620 (OS grid reference) · View on Apple Maps
WFD catchment
Crimple Beck from Park Beck to River Nidd (GB104027063742)
2024 spills / hours
72 / 834
Long-term average
71.2 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 662 hours spilling →
The Crimple Beck 55 662 down 24% 100%
South Elmsall WwTW
Storm tank at sewage works
Sewage works
South Elmsall
Company site name
SOUTH ELMSALL/STW/3XDWF OVERFLOW
EA ID / permit
YWS01417 · WRA7507
Outlet location
SE4830010650 (OS grid reference) · View on Apple Maps
WFD catchment
Ea Beck from Frickley Beck to the Skell (GB104027063200)
2024 spills / hours
45 / 302
Long-term average
64.8 spills a year (monitored since 2020)
High-spill reason (company)
Performance - SW Infiltration
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 660 hours spilling →
Hemsworth Dyke 88 660 up 96% 100%
Wombwell WwTW
Storm tank at sewage works
Sewage works
Wombwell
Company site name
WOMBWELL/STW/3XDWF OVERFLOW
EA ID / permit
YWS01100 · WA 6273
Outlet location
SE4099303788 (OS grid reference) · View on Apple Maps
WFD catchment
Dove from Source to River Dearne (GB104027057510)
2024 spills / hours
73 / 692
Long-term average
74.8 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Operational investigation ongoing
Improvement
Operational improvement ongoing
Volume & pollution
Estimate from 655 hours spilling →
River Dove and Bulling Dyke 67 655 down 8% 100%
Skelton on Ure Wpc Works
Inlet overflow at sewage works
Sewage works
Skelton On Ure Wpc Works
Company site name
SKELTON/STW/6XDWF OVERFLOW
EA ID / permit
YWS00285 · 27/22/0060
Outlet location
SE3550068600 (OS grid reference) · View on Apple Maps
WFD catchment
Ure from River Skell to River Tutt (GB104027064161)
2024 spills / hours
106 / 1,147
Long-term average
77.2 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 639 hours spilling →
Scour Gutter 70 639 down 34% 100%
Skipton Sewage Treatment Works
Storm tank at sewage works
Sewage works
Skipton
Company site name
SKIPTON/STW/3XDWF OVERFLOW
EA ID / permit
YWS00636 · 2838
Outlet location
SD9859049710 (OS grid reference) · View on Apple Maps
WFD catchment
Aire (Eshton Beck to R Worth) (GB104027063033)
2024 spills / hours
86 / 892
Long-term average
73.0 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 638 hours spilling →
River Aire 62 638 down 28% 100%
Hillcrest Avenue
Overflow on sewer network
Company site name
HILLCREST AV TANK/CSO
EA ID / permit
YWS00505 · 27/26/0016
Outlet location
TA0225090550 (OS grid reference) · View on Apple Maps
WFD catchment
Burniston Beck/Sea Cut/Scalby Beck Catch to N Sea (GB104027067980)
Bathing water
Scarborough North Bay
2024 spills / hours
73 / 640
Long-term average
36.2 spills a year (monitored since 2020)
High-spill reason (company)
Performance - Asset configuration (e.g. PS/rising main/storm tanks)
Investigation
UWWTR investigation ongoing, Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 635 hours spilling →
Scalby Beck - North Sea 44 635 down 40% 100%
Draughton Wpc Works
Inlet overflow at sewage works
Sewage works
Draughton Wpc Works
Company site name
DRAUGHTON/STW/6XDWF OVERFLOW
EA ID / permit
YWS00189 · 27/19/0082
Outlet location
SE0460053100 (OS grid reference) · View on Apple Maps
WFD catchment
Hambleton Beck/Ings Bk Catch (trib of Wharfe) (GB104027064030)
Bathing water
Wharfe at Cromwheel, Ilkley
2024 spills / hours
47 / 326
Long-term average
23.8 spills a year (monitored since 2021)
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 629 hours spilling →
Ings Beck 56 629 up 19% 100%
Church End Sewage Pumping Station
Storm discharge at pumping station
Company site name
CHURCH END/CSO
EA ID / permit
YWS00402 · 27/24/0214
Outlet location
SE5767437748 (OS grid reference) · View on Apple Maps
WFD catchment
Ouse Still/fleet bk - Kelfield and Wharfe d/s Ryther (GB104027064280)
2024 spills / hours
73 / 728
Long-term average
36.7 spills a year (monitored since 2020)
High-spill reason (company)
Performance - SW Infiltration
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 621 hours spilling →
River Ouse (Tidal) 68 621 down 7% 100%
New Ellerby Sewage Pumping Station
Overflow on sewer network
Company site name
NEW ELLERBY/CSO
EA ID / permit
YWS01984 · WRA8861
Outlet location
TA1673039180 (OS grid reference) · View on Apple Maps
WFD catchment
Holderness Drain from Fordyke Stream to Humber (GB104026066800)
2024 spills / hours
72 / 610
Long-term average
67.8 spills a year (monitored since 2020)
High-spill reason (company)
Performance - SW Infiltration
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 620 hours spilling →
A Tributary of Kelwell Drain 58 620 down 19% 100%
Canal Road Frizinghall CSO
Overflow on sewer network
Company site name
CANAL RD FRIZINGHALL/CSO
EA ID / permit
YWS00974 · EPRUP3125GY
Outlet location
SE1557535594 (OS grid reference) · View on Apple Maps
WFD catchment
Bradford Beck (Clayton Bk to R Aire) (GB104027062862)
2024 spills / hours
69 / 307
Long-term average
37.2 spills a year (monitored since 2020)
High-spill reason (company)
Performance - SW Infiltration
Investigation
Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 618 hours spilling →
Bradford Beck 100 618 up 45% 100%
North Cowton STW
Storm tank at sewage works
Sewage works
North Cowton
Company site name
NORTH COWTON/STW
EA ID / permit
YWS00346 · 27/23/0194
Outlet location
NZ2861003520 (OS grid reference) · View on Apple Maps
WFD catchment
Trenholme Stell from Source to River Wiske (GB104027069560)
2024 spills / hours
86 / 832
Long-term average
114.5 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 613 hours spilling →
The Stell 63 613 down 27% 100%
Howden STW
Inlet overflow at sewage works
Sewage works
Howden
Company site name
HOWDEN/STW
EA ID / permit
YWS00034 · 1569
Outlet location
SE7542026790 (OS grid reference) · View on Apple Maps
WFD catchment
HUMBER UPPER (GB530402609203)
2024 spills / hours
120 / 828
Long-term average
86.5 spills a year (monitored since 2020)
High-spill reason (company)
Performance - SW Infiltration
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 610 hours spilling →
River Ouse (Tidal) 74 610 down 38% 100%
Terry Avenue CSO
Overflow on sewer network
Company site name
TERRY AVENUE/CSO
EA ID / permit
YWS00451 · 27/24/0427
Outlet location
SE6049251039 (OS grid reference) · View on Apple Maps
WFD catchment
Ouse from River Nidd to Stillingfleet Beck (GB104027069593)
2024 spills / hours
0 / 0.0
Long-term average
14.0 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 608 hours spilling →
River Ouse 56 608 up from 0 100%
Danesmoor No 3 CSO
Overflow on sewer network
Company site name
DANESMOOR/NO 3 CSO
EA ID / permit
YWS01817 · WRA8510
Outlet location
SK4047062810 (OS grid reference) · View on Apple Maps
WFD catchment
Rother from Source to Redleadmill Brook (GB104027052280)
2024 spills / hours
29 / 200
Long-term average
39.3 spills a year (monitored since 2020)
High-spill reason (company)
Performance - SW Infiltration
Investigation
Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 606 hours spilling →
Tributary of the River Rother 44 606 up 52% 100%
New Inn West Street CSO
Overflow on sewer network
Company site name
NEW INN WEST STREET/CSO
EA ID / permit
YWS01775 · WRA8446
Outlet location
SE0589023460 (OS grid reference) · View on Apple Maps
WFD catchment
River Ryburn from Booth Dean Clough to R Calder (GB104027062580)
2024 spills / hours
122 / 1,393
Long-term average
107.0 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 604 hours spilling →
River Ryburn 77 604 down 37% 100%
Listing Mill Farm CSO
Overflow on sewer network
Company site name
LISTING MILL FARM/CSO
EA ID / permit
YWS00624 · 2767
Outlet location
SE2071024850 (OS grid reference) · View on Apple Maps
WFD catchment
Spen Beck from Source to River Calder (GB104027062710)
2024 spills / hours
38 / 79
Long-term average
46.5 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 604 hours spilling →
Tributary of the River Spen 74 604 up 95% 100%
Google Carr Lane SPS
Storm discharge at pumping station
Company site name
GOOLE CARR LANE/SPS/6XDWF OVERFLOW
EA ID / permit
YWS00095 · 2213(T)
Outlet location
SE7490025630 (OS grid reference) · View on Apple Maps
WFD catchment
HUMBER UPPER (GB530402609203)
2024 spills / hours
55 / 252
Long-term average
70.0 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Operational investigation ongoing
Improvement
Operational improvement ongoing
Volume & pollution
Estimate from 602 hours spilling →
River Ouse 77 602 up 40% 100%
Ewden WwTW
Storm tank at sewage works
Sewage works
Ewden
Company site name
EWDEN/STW
EA ID / permit
YWS00957 · EPRMB3797WP
Outlet location
SK2984495786 (OS grid reference) · View on Apple Maps
WFD catchment
Don from Little Don to River Loxley confluence (GB104027057411)
2024 spills / hours
60 / 726
Long-term average
50.5 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 600 hours spilling →
River Don 49 600 down 18% 100%
Springfield Lane CSO
Overflow on sewer network
Company site name
SPRINGFIELD LANE/CSO
EA ID / permit
YWS01070 · S/UD/112
Outlet location
SE1918813012 (OS grid reference) · View on Apple Maps
WFD catchment
Fenay beck from Source to River Colne (GB104027063340)
2024 spills / hours
80 / 387
Long-term average
65.2 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 595 hours spilling →
Tributary of Dean Bottom Dike 67 595 down 16% 91%
Wyvil Crescent CSO
Overflow on sewer network
Company site name
WYVIL CRESCENT/CSO
EA ID / permit
YWS00171 · 27/19/0019
Outlet location
SE1360848128 (OS grid reference) · View on Apple Maps
WFD catchment
Wharfe from Barben Beck/River Dibb to Hundwith Beck (GB104027064257)
2024 spills / hours
87 / 570
Long-term average
87.7 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation completed, Operational investigation completed, Bathing Water and/or Shellfish Water investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 595 hours spilling →
River Wharfe 80 595 down 8% 100%
West Vale CSO
Overflow on sewer network
Company site name
WEST VALE/CSO
EA ID / permit
YWS00153 · EPRSB3590WC
Outlet location
SE0942421127 (OS grid reference) · View on Apple Maps
WFD catchment
Black Brook from Source to River Calder (GB104027062570)
2024 spills / hours
177 / 2,082
Long-term average
124.5 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Monitor below 90%
Comms failure / issue · Resolved - Jun
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 587 hours spilling →
Black Brook 78 587 down 56% 68%
North Ferriby STW
Inlet overflow at sewage works
Sewage works
North Ferriby
Company site name
NORTH FERRIBY/STW
EA ID / permit
YWS00085 · 2137
Outlet location
SE9913025150 (OS grid reference) · View on Apple Maps
WFD catchment
HUMBER MIDDLE (GB530402609202)
2024 spills / hours
126 / 670
Long-term average
135.8 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 581 hours spilling →
River Humber 108 581 down 14% 100%
Garforth Storm Tanks No 1 & 2
Overflow on sewer network
Company site name
GARFORTH TANKS/CSO
EA ID / permit
YWS01431 · WRA7537
Outlet location
SE3980032060 (OS grid reference) · View on Apple Maps
WFD catchment
Lin Dike from Source to River Aire (GB104027062810)
2024 spills / hours
54 / 395
Long-term average
48.3 spills a year (monitored since 2020)
High-spill reason (company)
Performance - Asset configuration (e.g. PS/rising main/storm tanks)
Investigation
UWWTR investigation ongoing, Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 580 hours spilling →
The Beck 51 580 down 6% 100%
Runswick Beck CSO
Storm discharge at pumping station
Company site name
RUNSWICK BECK/CSO
EA ID / permit
YWS00605 · 27/29/0090
Outlet location
NZ8074016120 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
Bathing water
Runswick Bay
2024 spills / hours
62 / 714
Long-term average
52.7 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Operational investigation completed
Improvement
UWWTR improvement ongoing
Volume & pollution
Estimate from 568 hours spilling →
Culverted Runwick Beck 44 568 down 29% 100%
Strensall SPS
Storm discharge at pumping station
Company site name
STRENSALL/CSO
EA ID / permit
YWS01250 · WADC408
Outlet location
SE6260060600 (OS grid reference) · View on Apple Maps
WFD catchment
River Foss from the Syke to the River Ouse (GB104027063520)
2024 spills / hours
55 / 513
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 564 hours spilling →
River Foss 52 564 down 5% 100%
Sheriff Hutton STW
Storm tank at sewage works
Sewage works
Sheriff Hutton
Company site name
SHERIFF HUTTON/STW
EA ID / permit
YWS00435 · 27/24/0363
Outlet location
SE6439065580 (OS grid reference) · View on Apple Maps
WFD catchment
Foss from Farlington Beck to the Syke (GB104027063540)
2024 spills / hours
55 / 439
Long-term average
71.7 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 558 hours spilling →
Howl Beck 64 558 up 16% 100%
Manchester Road Weir CSO
Overflow on sewer network
Company site name
MANCHESTER ROAD WEIR/CSO
EA ID / permit
YWS01825 · WRA8523
Outlet location
SK2848398153 (OS grid reference) · View on Apple Maps
WFD catchment
Little Don from Source to River Don (GB104027057460)
2024 spills / hours
104 / 695
Long-term average
94.5 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 557 hours spilling →
The Porter Or Little Don River 79 557 down 24% 100%
Silkstone STW
Storm tank at sewage works
Sewage works
Silkstone
Company site name
SILKSTONE/STW/3XDWF OVERFLOW
EA ID / permit
YWS00118 · 2313
Outlet location
SE2948006430 (OS grid reference) · View on Apple Maps
WFD catchment
Silkstone Beck from Source to Cawthorne Dyke (GB104027057560)
2024 spills / hours
65 / 472
Long-term average
49.7 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 555 hours spilling →
Silkstone Beck 68 555 up 5% 100%
Lelley Sewage Treatment Works
Inlet overflow at sewage works
Sewage works
Lelley
Company site name
LELLEY/STW
EA ID / permit
YWS01976 · WRA8797
Outlet location
TA2100032750 (OS grid reference) · View on Apple Maps
WFD catchment
Humbleton Beck Catchment (GB104026066610)
2024 spills / hours
93 / 1,524
Long-term average
33.7 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 554 hours spilling →
Tributary of Northfield Drain 39 554 down 58% 100%
South Stainley SPS
Storm discharge at pumping station
Company site name
SOUTH STAINLEY/CSO
EA ID / permit
YWS00289 · 27/22/0069
Outlet location
SE3057063060 (OS grid reference) · View on Apple Maps
WFD catchment
Holbeck Catchment (GB104027064110)
2024 spills / hours
39 / 696
Long-term average
48.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 548 hours spilling →
Stainley Beck 29 548 down 26% 99%
High Royd Sewage Treatment Works
Storm tank at sewage works
Sewage works
High Royd
Company site name
HIGH ROYD/NO 2 STW/3XDWF OVERFLOW
EA ID / permit
YWS00815 · 967
Outlet location
SE0469223871 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from Colden Water to Ryburn Confluence (GB104027062641)
2024 spills / hours
91 / 1,052
Long-term average
78.2 spills a year (monitored since 2020)
High-spill reason (company)
Performance - SW Infiltration
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 548 hours spilling →
River Calder 57 548 down 37% 100%
Barwick in Elmet Sewage Works
Storm tank at sewage works
Sewage works
Barwick In Elmet
Company site name
BARWICK IN ELMET/STW
EA ID / permit
YWS00794 · 65
Outlet location
SE4083037380 (OS grid reference) · View on Apple Maps
WFD catchment
Cock Beck Catchment (trib of Wharfe) (GB104027063940)
2024 spills / hours
101 / 866
Long-term average
94.5 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 546 hours spilling →
Trib of Cock Beck 57 546 down 44% 98%
Constable Burton STW
Inlet overflow at sewage works
Sewage works
Constable Burton
Company site name
CONSTABLE BURTON/STW
EA ID / permit
YWS00096 · 2216
Outlet location
SE1718390702 (OS grid reference) · View on Apple Maps
WFD catchment
Bedale/Newton/Burton Bk from Source to Brompton Bk (GB104027068940)
2024 spills / hours
49 / 455
Long-term average
44.8 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 544 hours spilling →
Burton Beck 57 544 up 16% 100%
Crow Lane Works CSO
Overflow on sewer network
Company site name
CROW LANE WORKS/CSO
EA ID / permit
YWS01793 · WRA8470
Outlet location
SK3887071440 (OS grid reference) · View on Apple Maps
WFD catchment
Rother, Spittal Brook to Doe Lea (GB104027057771)
2024 spills / hours
69 / 527
Long-term average
65.7 spills a year (monitored since 2020)
High-spill reason (company)
Performance - SW Infiltration
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 541 hours spilling →
River Rother 62 541 down 10% 100%
Hough Side Works CSO
Overflow on sewer network
Company site name
HOUGH SIDE WORKS/CSO
EA ID / permit
YWS00859 · C4917
Outlet location
SE2365433149 (OS grid reference) · View on Apple Maps
WFD catchment
Low/Wortley/Pudsey Bks from Source to Milshaw Beck (GB104027062830)
2024 spills / hours
103 / 687
Long-term average
92.3 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 540 hours spilling →
Farnley Beck 86 540 down 17% 100%
Wistons Lane/Elland Link CSO
Overflow on sewer network
Company site name
WISTONS LANE/CSO
EA ID / permit
YWS01905 · WRA8662
Outlet location
SE1101021420 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from Ryburn Confluence to River Colne (GB104027062642)
2024 spills / hours
47 / 207
Long-term average
46.7 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 540 hours spilling →
Canker Dyke 47 540 no change 100%
Bolsover WwTW
Storm tank at sewage works
Sewage works
Bolsover
Company site name
BOLSOVER/STW
EA ID / permit
YWS00062 · 1866
Outlet location
SK4591070150 (OS grid reference) · View on Apple Maps
WFD catchment
Doe Lea from Source to Hawke Brook (GB104027057290)
2024 spills / hours
91 / 786
Long-term average
80.3 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 540 hours spilling →
River Doe Lea 76 540 down 16% 100%
Bridge Road CSO
Overflow on sewer network
Company site name
BRIDGE ROAD/CSO
EA ID / permit
YWS02124 · WRA9235
Outlet location
SE2784017820 (OS grid reference) · View on Apple Maps
WFD catchment
Smithy Brook from Source to River Calder (GB104027062510)
2024 spills / hours
110 / 736
Long-term average
92.8 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 525 hours spilling →
Smithy Brook 101 525 down 8% 100%
Norton Le Clay Sewage Works
Inlet overflow at sewage works
Sewage works
Norton Le Clay
Company site name
NORTON LE CLAY/STW
EA ID / permit
YWS00367 · 27/23/0272
Outlet location
SE4006071170 (OS grid reference) · View on Apple Maps
WFD catchment
Cundall Beck/Soppa Gutter Catch (trib of Swale) (GB104027068780)
2024 spills / hours
110 / 1,429
Long-term average
85.0 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 515 hours spilling →
Unnamed Trib of Main Goit 59 515 down 46% 100%
Caldervale (Wakefield) STW
Storm tank at sewage works
Sewage works
Caldervale
Company site name
CALDER VALE/STW/3XDWF OVERFLOW
EA ID / permit
YWS00830 · C4106
Outlet location
SE3506020400 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Chald to River Aire (GB104027062632)
2024 spills / hours
41 / 373
Long-term average
55.3 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 511 hours spilling →
River Calder 47 511 up 15% 100%
High Bridge Hillsborough CSO
Overflow on sewer network
Company site name
HIGH BRIDGE HILLSBORO/CSO
EA ID / permit
YWS01788 · WRA8464
Outlet location
SK3344090530 (OS grid reference) · View on Apple Maps
WFD catchment
Don from Little Don to River Loxley confluence (GB104027057411)
2024 spills / hours
106 / 706
Long-term average
103.7 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 509 hours spilling →
River Don 80 509 down 25% 100%
Cawthorne WwTW
Storm tank at sewage works
Sewage works
Cawthorne
Company site name
CAWTHORNE/STW/3XDWF OVERFLOW
EA ID / permit
YWS00011 · 112
Outlet location
SE2829008110 (OS grid reference) · View on Apple Maps
WFD catchment
Cawthorne Dyke from Source to Silkstone Beck (GB104027063150)
2024 spills / hours
133 / 932
Long-term average
84.8 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 508 hours spilling →
Tanyard Beck 47 508 down 65% 100%
Harrogate North Sewage Treatment
Storm tank at sewage works
Sewage works
Harrogate North Sewage Treatment
Company site name
HARROGATE NORTH/STW/3XDWF OVERFLOW
EA ID / permit
YWS01039 · QR.27/21/0047
Outlet location
SE3020057985 (OS grid reference) · View on Apple Maps
WFD catchment
Oak Beck Catchment (Trib of Nidd) (GB104027063760)
2024 spills / hours
69 / 686
Long-term average
67.7 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation ongoing, Bathing Water and/or Shellfish Water investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 504 hours spilling →
Oak Beck (Nidd Cat) 56 504 down 19% 100%
Hunton STW Final Effluent
Inlet overflow at sewage works
Sewage works
Hunton Final Effluent
Company site name
HUNTON/STW
EA ID / permit
YWS00370 · 27/23/0275
Outlet location
SE1947092120 (OS grid reference) · View on Apple Maps
WFD catchment
Brompton Bk from Source to Newton Bk (GB104027068960)
2024 spills / hours
73 / 692
Long-term average
61.8 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 501 hours spilling →
Hunton Beck 63 501 down 14% 100%
Market Weighton STW
Storm tank at sewage works
Sewage works
Market Weighton
Company site name
MARKET WEIGHTON/NO 2 STW
EA ID / permit
YWS01001 · H226
Outlet location
SE8681040700 (OS grid reference) · View on Apple Maps
WFD catchment
Foulness from Black Beck to Market Weighton Canal (GB104026066690)
2024 spills / hours
104 / 1,225
Long-term average
55.5 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 497 hours spilling →
Market Weighton Beck 41 497 down 61% 100%
Knostrop WwTW
Storm tank at sewage works
Sewage works
Knostrop
Company site name
KNOSTROP/H LEVEL STW/3XDWF OVERFLOW
EA ID / permit
YWS01345 · WRA6924
Outlet location
SE3384031860 (OS grid reference) · View on Apple Maps
WFD catchment
Wyke Beck from Source to River Aire (GB104027062880)
2024 spills / hours
73 / 679
Long-term average
94.3 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 495 hours spilling →
Wyke Beck and the River Aire 56 495 down 23% 100%
Old Whittington (Chesterfield) STW
Inlet overflow at sewage works
Sewage works
Old Whittington
Company site name
OLD WHITTINGTON/STW
EA ID / permit
YWS01335 · WRA6756
Outlet location
SK3929074400 (OS grid reference) · View on Apple Maps
WFD catchment
Rother, Spittal Brook to Doe Lea (GB104027057771)
2024 spills / hours
34 / 604
Long-term average
31.5 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 494 hours spilling →
River Rother 29 494 down 15% 99%
Great Hatfield STW
Inlet overflow at sewage works
Sewage works
Great Hatfield
Company site name
GREAT HATFIELD/NO 2 STW
EA ID / permit
YWS01743 · WRA8394
Outlet location
TA1821042730 (OS grid reference) · View on Apple Maps
WFD catchment
Lambwath Stream from Source to Foredyke Stream (GB104026066860)
2024 spills / hours
50 / 584
Long-term average
38.0 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 494 hours spilling →
Unnamed Trib of Catchwater Drn 43 494 down 14% 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.