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
Burton Pidsea WwTW
Storm tank at sewage works
Sewage works
Burton Pidsea
Company site name
BURTON PIDSEA/STW
EA ID / permit
YWS01118 · WA6400
Outlet location
TA2451031760 (OS grid reference) · View on Apple Maps
WFD catchment
Burton Pidsea Drain Lower Catchment (GB104026066590)
2024 spills / hours
35 / 379
Long-term average
27.5 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 258 hours spilling →
Burton Pidsea Drain 21 258 down 40% 100%
Red Lion A58 CSO
Overflow on sewer network
Company site name
RED LION A58/CSO
EA ID / permit
YWS00079 · 2068
Outlet location
SE1469026050 (OS grid reference) · View on Apple Maps
WFD catchment
Clifton Beck from Source to River Calder (GB104027062700)
2024 spills / hours
60 / 181
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 257 hours spilling →
Wyke Beck 73 257 up 22% 100%
Wheatley Lane 2 CSO
Overflow on sewer network
Company site name
WHEATLEY LANE/2 CSO
EA ID / permit
YWS01032 · QC.27/19/0018
Outlet location
SE1360948128 (OS grid reference) · View on Apple Maps
WFD catchment
Wharfe from Barben Beck/River Dibb to Hundwith Beck (GB104027064257)
2024 spills / hours
50 / 243
Long-term average
64.5 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Bathing Water and/or Shellfish Water investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 255 hours spilling →
River Wharfe 49 255 down 2% 100%
Skeldergate Bridge CSO
Overflow on sewer network
Company site name
SKELDERGATE BRIDGE/CSO
EA ID / permit
YWS00445 · 27/24/0420
Outlet location
SE6040051315 (OS grid reference) · View on Apple Maps
WFD catchment
Ouse from River Nidd to Stillingfleet Beck (GB104027069593)
2024 spills / hours
48 / 13
Long-term average
35.7 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 254 hours spilling →
River Ouse 74 254 up 54% 100%
Asselby Combined Sewer Overflow
Inlet overflow at sewage works
Sewage works
Asselby Combined Sewer
Company site name
ASSELBY/STW/6XDWF OVERFLOW
EA ID / permit
YWS00439 · 27/24/0403
Outlet location
SE7194028230 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
38 / 112
Long-term average
38.8 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 252 hours spilling →
Unnamed Trib of River Ouse 48 252 up 26% 100%
Holmesfield STW
Storm tank at sewage works
Sewage works
Holmesfield
Company site name
HOLMESFIELD/STW
EA ID / permit
YWS00808 · 876
Outlet location
SK3280077900 (OS grid reference) · View on Apple Maps
WFD catchment
Barlow Brook from Source to River Drone (GB104027057700)
2024 spills / hours
75 / 571
Long-term average
68.7 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 252 hours spilling →
Holmesfield Brook 34 252 down 55% 100%
Whitby Road Bridge CSO
Storm discharge at pumping station
Company site name
WHITBY ROAD BDG/CSO
EA ID / permit
YWS00581 · 27/29/0044
Outlet location
TA0346091320 (OS grid reference) · View on Apple Maps
WFD catchment
Yorkshire North (GB650401500004)
Bathing water
Scarborough North Bay
2024 spills / hours
54 / 303
Long-term average
54.3 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 249 hours spilling →
The North Sea 44 249 down 19% 100%
Nidd Walk CSO
Overflow on sewer network
Company site name
NIDD WALK/CSO
EA ID / permit
YWS00863 · C4937
Outlet location
SE1632264933 (OS grid reference) · View on Apple Maps
WFD catchment
Nidd from Ashfoldside Beck to Birstwith (GB104027068295)
2024 spills / hours
58 / 517
Long-term average
64.0 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Operational investigation completed, Bathing Water and/or Shellfish Water investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 248 hours spilling →
River Nidd via SWS 38 248 down 34% 100%
Newby Bridge Storm Detention Tank
Overflow on sewer network
Company site name
NEWBY BRIDGE TANK/CSO
EA ID / permit
YWS00503 · 27/26/0014
Outlet location
TA0141090360 (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
23 / 232
Long-term average
25.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 246 hours spilling →
Scalby Beck - North Sea 19 246 down 17% 100%
Horbury Bridge SPS
Overflow on sewer network
Company site name
HORBURY BRIDGE/NO 2 CSO
EA ID / permit
YWS01499 · WRA7938
Outlet location
SE2819017880 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Colne to River Chald (GB104027062631)
2024 spills / hours
78 / 283
Long-term average
54.7 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 246 hours spilling →
River Calder 63 246 down 19% 100%
Halifax Copley STW
Storm tank at sewage works
Sewage works
Halifax Copley
Company site name
SALTERHEBBLE/STW/3XDWF OVERFLOW
EA ID / permit
YWS01421 · WRA7510
Outlet location
SE0959022370 (OS grid reference) · View on Apple Maps
WFD catchment
Hebble Brook from Source to River Calder (GB104027062780)
2024 spills / hours
61 / 409
Long-term average
64.3 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 245 hours spilling →
River Calder and Hebble Brook 38 245 down 38% 100%
Flamborough WwTW
Inlet overflow at sewage works
Sewage works
Flamborough
Company site name
FLAMBOROUGH VILLAGE/STW
EA ID / permit
YWS01125 · WA6514
Outlet location
TA2232068130 (OS grid reference) · View on Apple Maps
WFD catchment
Yorkshire South (GB640402491000)
Bathing water
Danes Dyke, Flamborough; Flamborough South Landing
2024 spills / hours
11 / 61
Long-term average
23.3 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 245 hours spilling →
North Sea/Hartendale Gutter 84 245 up 664% 100%
Ossett Spa SPS
Storm discharge at pumping station
Company site name
OSSETT SPA/CSO
EA ID / permit
YWS01105 · WA6348
Outlet location
SE3127017940 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Colne to River Chald (GB104027062631)
2024 spills / hours
25 / 190
Long-term average
34.0 spills a year (monitored since 2020)
High-spill reason (company)
Performance - Other maintenance / capital works (e.g. jetting)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
Operational improvement ongoing
Volume & pollution
Estimate from 245 hours spilling →
River Calder 32 245 up 28% 99%
Bailiff Bridge CSO
Overflow on sewer network
Company site name
BROOKFOOT MILLS/CSO
EA ID / permit
YWS00896 · E2
Outlet location
SE1362123416 (OS grid reference) · View on Apple Maps
WFD catchment
Red Beck, Source to Calder and Hebble Navigation (GB104027062720)
2024 spills / hours
50 / 145
Long-term average
42.5 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 244 hours spilling →
Wyke Beck 66 244 up 32% 100%
Melton STW
Inlet overflow at sewage works
Sewage works
Melton
Company site name
MELTON/STW
EA ID / permit
YWS01720 · WRA8282
Outlet location
SE9756024810 (OS grid reference) · View on Apple Maps
WFD catchment
HUMBER MIDDLE (GB530402609202)
2024 spills / hours
154 / 1,869
Long-term average
108.8 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 244 hours spilling →
River Humber 53 244 down 66% 100%
Wombwell WwTW
Inlet overflow at sewage works
Sewage works
Wombwell
Company site name
WOMBWELL/STW/6XDWF OVERFLOW
EA ID / permit
YWS01101 · WA 6273
Outlet location
SE4088103364 (OS grid reference) · View on Apple Maps
WFD catchment
River Dearne Darfield STW to River Don (GB104027063173)
2024 spills / hours
28 / 116
Long-term average
28.3 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 244 hours spilling →
River Dove and Bulling Dyke 60 244 up 114% 100%
Old Ellerby STW
Inlet overflow at sewage works
Sewage works
Old Ellerby
Company site name
OLD ELLERBY/STW
EA ID / permit
YWS01975 · WRA8796
Outlet location
TA1663037450 (OS grid reference) · View on Apple Maps
WFD catchment
Holderness Drain from Fordyke Stream to Humber (GB104026066800)
2024 spills / hours
67 / 846
Long-term average
47.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 243 hours spilling →
Tributary of Kelwell Drain 25 243 down 63% 100%
Tholthorpe STW (Consent Reviewed)
Inlet overflow at sewage works
Sewage works
Tholthorpe
Company site name
THOLTHORPE/STW
EA ID / permit
YWS01046 · QR27/24/0086
Outlet location
SE4740066900 (OS grid reference) · View on Apple Maps
WFD catchment
Derrings Beck from Source to River Kyle (GB104027063920)
2024 spills / hours
79 / 307
Long-term average
66.5 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 242 hours spilling →
Derrings Beck 65 242 down 18% 100%
Permit applied for
Inlet overflow at sewage works
Sewage works
Permit Applied For
Company site name
MICKLEBY/STW
EA ID / permit
YWS00045 · Permit applied for
Outlet location
NZ8070012800 (OS grid reference) · View on Apple Maps
WFD catchment
Sandsend Beck/Mickley Bk from Source to North Sea (GB104027068720)
2024 spills / hours
36 / 114
Long-term average
35.2 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 240 hours spilling →
Permit applied for 44 240 up 22% 100%
North Avenue CSO
Overflow on sewer network
Company site name
NORTH AVENUE/CSO
EA ID / permit
YWS01122 · WA6456
Outlet location
SE1595034900 (OS grid reference) · View on Apple Maps
WFD catchment
Bradford Beck (Clayton Bk to R Aire) (GB104027062862)
2024 spills / hours
30 / 177
Long-term average
32.8 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 239 hours spilling →
Bradford Beck 25 239 down 17% 100%
Coneysthorpe Sewage Treatment Works
Inlet overflow at sewage works
Sewage works
Coneysthorpe
Company site name
CONEYSTHORPE/STW
EA ID / permit
YWS00671 · 3143(SS)
Outlet location
SE7171071000 (OS grid reference) · View on Apple Maps
WFD catchment
Cram Beck catch (trib of Derwent) (GB104027063570)
2024 spills / hours
31 / 491
Long-term average
20.8 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 237 hours spilling →
Mill Hills Beck 15 237 down 52% 100%
Thornton Road 209 CSO
Overflow on sewer network
Company site name
THORNTON ROAD 209/CSO
EA ID / permit
YWS00766 · 3801
Outlet location
SE1167832964 (OS grid reference) · View on Apple Maps
WFD catchment
Clayton Beck (Source to Bradford Bk) (GB104027062861)
2024 spills / hours
88 / 358
Long-term average
80.5 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 236 hours spilling →
Pitty Beck 67 236 down 24% 100%
Ravensworth Sewage Pumping Station
Storm discharge at pumping station
Company site name
RAVENSWORTH VILLAGE/CSO
EA ID / permit
YWS00348 · 27/23/0205
Outlet location
NZ1415008130 (OS grid reference) · View on Apple Maps
WFD catchment
Skeeby/Holme/Dalton Bk from Source to River Swale (GB104027069180)
2024 spills / hours
66 / 315
Long-term average
58.0 spills a year (monitored since 2020)
High-spill reason (company)
Performance - SW Infiltration
Investigation
UWWTR investigation ongoing, Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 235 hours spilling →
Holme Beck 45 235 down 32% 99%
Bradford Road
Overflow on sewer network
Company site name
BRICK KILN LANE/CSO
EA ID / permit
YWS01294 · WADC783
Outlet location
SE0962041230 (OS grid reference) · View on Apple Maps
WFD catchment
Ouse from R Wharfe to Upper Humber (GB104027064270)
2024 spills / hours
66 / 226
Long-term average
41.3 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Monitor below 90%
Comms failure / issue · Resolved - Apr
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 235 hours spilling →
River Aire 51 235 down 23% 90%
SSO at Norton Pumping Station
Storm discharge at pumping station
Company site name
NORTON STATION RD/CSO
EA ID / permit
YWS00737 · 3600
Outlet location
SE5530015300 (OS grid reference) · View on Apple Maps
WFD catchment
Went from Hoyle Mill Stream to Blowell Drain (GB104027063360)
2024 spills / hours
57 / 680
Long-term average
59.8 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 234 hours spilling →
Trib of Swan Sike Drain 21 234 down 63% 100%
Haxby Storm Tanks STW
Storm tank at sewage works
Sewage works
Haxby
Company site name
HAXBY STORM TANKS/STW
EA ID / permit
YWS00440 · 27/24/0404
Outlet location
SE6163057610 (OS grid reference) · View on Apple Maps
WFD catchment
River Foss from the Syke to the River Ouse (GB104027063520)
2024 spills / hours
65 / 934
Long-term average
39.2 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 232 hours spilling →
River Foss 29 232 down 55% 100%
Huddersfield STW
Inlet overflow at sewage works
Sewage works
Huddersfield
Company site name
BRIGHOUSE/UPPER STW/6XDWF OVERFLOW
EA ID / permit
YWS01397 · WRA7409
Outlet location
SE1729021120 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from Ryburn Confluence to River Colne (GB104027062642)
2024 spills / hours
49 / 304
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 231 hours spilling →
River Calder & River Colne 40 231 down 18% 94%
Bridge House Farm CSO
Overflow on sewer network
Company site name
BRIDGE HOUSE FARM/CSO
EA ID / permit
YWS00205 · 27/20/0100
Outlet location
SE2919046770 (OS grid reference) · View on Apple Maps
WFD catchment
Weeton Beck catchment (trib of Wharfe) (GB104027063990)
2024 spills / hours
50 / 354
Long-term average
49.2 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Operational investigation completed, Bathing Water and/or Shellfish Water investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 231 hours spilling →
Weeton Beck 36 231 down 28% 100%
Sherwood Drive CSO
Overflow on sewer network
Company site name
SHERWOOD DRIVE/CSO
EA ID / permit
YWS00220 · 27/21/0015
Outlet location
SE3333254976 (OS grid reference) · View on Apple Maps
WFD catchment
Crimple Beck from Source to Park Beck (GB104027063741)
2024 spills / hours
60 / 289
Long-term average
33.4 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 231 hours spilling →
Rud Beck 49 231 down 18% 100%
Shipton STW
Storm tank at sewage works
Sewage works
Shipton
Company site name
SHIPTON/NO 2 STW
EA ID / permit
YWS00391 · 27/24/0171
Outlet location
SE5580058300 (OS grid reference) · View on Apple Maps
WFD catchment
Hurns Gutterfrom Source to River Ouse (GB104027063780)
2024 spills / hours
65 / 282
Long-term average
34.7 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 231 hours spilling →
Hurns Gutter 31 231 down 52% 100%
Mappleton SPS
Storm discharge at pumping station
Company site name
MAPPLETON/CSO
EA ID / permit
YWS01483 · WRA7864
Outlet location
TA2272044040 (OS grid reference) · View on Apple Maps
WFD catchment
Yorkshire South (GB640402491000)
2024 spills / hours
64 / 178
Long-term average
59.0 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 231 hours spilling →
North Sea 48 231 down 25% 100%
High Royd Sewage Treatment Works
Overflow on sewer network
Company site name
HIGH ROYD TOWPATH/CSO
EA ID / permit
YWS00816 · 967
Outlet location
SE0469023880 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from Colden Water to Ryburn Confluence (GB104027062641)
2024 spills / hours
67 / 491
Long-term average
61.2 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 230 hours spilling →
River Calder 36 230 down 46% 100%
Bugthorpe Sewage Treatment Works
Inlet overflow at sewage works
Sewage works
Bugthorpe
Company site name
BUGTHORPE/STW
EA ID / permit
YWS00557 · 27/28/0123
Outlet location
SE7679057810 (OS grid reference) · View on Apple Maps
WFD catchment
Barlam/Skirpen Beck catch (trib of Derwent) (GB104027063510)
2024 spills / hours
41 / 423
Long-term average
35.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 230 hours spilling →
Bugthorpe Beck 29 230 down 29% 100%
Sheffield Road Kilmarsh CSO
Overflow on sewer network
Company site name
SHEFF RD KILLAMARSH/CSO
EA ID / permit
YWS00686 · 3268
Outlet location
SK4527781187 (OS grid reference) · View on Apple Maps
WFD catchment
Rother, Doe Lea to Don (GB104027057772)
2024 spills / hours
19 / 79
Long-term average
18.3 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 230 hours spilling →
River Rother 41 230 up 116% 100%
Beckside CSO
Overflow on sewer network
Company site name
BECKSIDE/CSO
EA ID / permit
YWS01378 · WRA7358
Outlet location
TA0581939339 (OS grid reference) · View on Apple Maps
WFD catchment
Hull from Arram Beck to Humber (GB104026067212)
2024 spills / hours
38 / 162
Long-term average
42.5 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 229 hours spilling →
River Hull 43 229 up 13% 100%
East Witton CSO
Overflow on sewer network
Company site name
EAST WITTON/CSO
EA ID / permit
YWS00309 · 27/22/0109
Outlet location
SE1470386230 (OS grid reference) · View on Apple Maps
WFD catchment
Ure from Mill Beck to Thornton Steward Beck (GB104027069464)
2024 spills / hours
42 / 415
Long-term average
28.7 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 229 hours spilling →
Trib of River Ure 33 229 down 21% 99%
Bolsover WwTW
Inlet overflow at sewage works
Sewage works
Bolsover
Company site name
BOLSOVER/STW
EA ID / permit
YWS00063 · 1866
Outlet location
SK4591070150 (OS grid reference) · View on Apple Maps
WFD catchment
Doe Lea from Source to Hawke Brook (GB104027057290)
2024 spills / hours
51 / 161
Long-term average
53.7 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 228 hours spilling →
River Doe Lea 45 228 down 12% 100%
Garforth STW
Storm tank at sewage works
Sewage works
Garforth
Company site name
GARFORTH/STW
EA ID / permit
YWS00100 · 2225
Outlet location
SE4175028790 (OS grid reference) · View on Apple Maps
WFD catchment
Lin Dike from Source to River Aire (GB104027062810)
2024 spills / hours
46 / 537
Long-term average
50.8 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 228 hours spilling →
Sheffield Beck 27 228 down 41% 100%
SSO at Oakfield Avenue
Overflow on sewer network
Company site name
OAKFIELD AVENUE/CSO
EA ID / permit
YWS00725 · 3509
Outlet location
SK3584070300 (OS grid reference) · View on Apple Maps
WFD catchment
Hipper from Source to River Rother (GB104027057660)
2024 spills / hours
75 / 265
Long-term average
67.8 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 225 hours spilling →
River Hipper 53 225 down 29% 100%
Yws Unknown Sites Default
Overflow on sewer network
Company site name
FORGE LANE DEWSBURY/CSO
EA ID / permit
YWS00809 · 878
Outlet location
SE2375019790 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Colne to River Chald (GB104027062631)
2024 spills / hours
40 / 159
Long-term average
18.2 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 225 hours spilling →
Calder 41 225 up 3% 100%
Tupton WwTW
Storm tank at sewage works
Sewage works
Tupton
Company site name
TUPTON/STW
EA ID / permit
YWS00670 · 3139(SS)
Outlet location
SK3982066810 (OS grid reference) · View on Apple Maps
WFD catchment
Redleadmill Brook (GB104027057620)
2024 spills / hours
82 / 768
Long-term average
84.7 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 224 hours spilling →
Redleadmill Brook 35 224 down 57% 93%
Stanley STW
Storm tank at sewage works
Sewage works
Stanley
Company site name
STANLEY/STW
EA ID / permit
YWS00925 · E743(SS)
Outlet location
SE3523023920 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Chald to River Aire (GB104027062632)
2024 spills / hours
44 / 407
Long-term average
59.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 224 hours spilling →
River Calder & Bramley'S Beck 29 224 down 34% 100%
Chandlers Wharf SPS
Overflow on sewer network
Company site name
CHANDLERS WHARF/CSO
EA ID / permit
YWS00521 · 27/27/0078
Outlet location
SE7902071460 (OS grid reference) · View on Apple Maps
WFD catchment
Derwent from River Rye to Kirkham (GB104027068313)
2024 spills / hours
46 / 555
Long-term average
28.6 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 224 hours spilling →
River Derwent 23 224 down 50% 100%
Denholme Whalley Lane Sew Pmpg Stn
Storm discharge at pumping station
Company site name
WHALLEY LANE/CSO
EA ID / permit
YWS01457 · WRA7667
Outlet location
SE0744034860 (OS grid reference) · View on Apple Maps
WFD catchment
Harden Beck from Source to River Aire (GB104027062870)
2024 spills / hours
85 / 387
Long-term average
82.5 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 223 hours spilling →
Denholme Beck 59 223 down 31% 100%
Holme on Spalding Moor WwTW
Storm tank at sewage works
Sewage works
Holme On Spalding Moor
Company site name
HOLME ON SPALDING MR/STW
EA ID / permit
YWS01111 · WA6385
Outlet location
SE7989037440 (OS grid reference) · View on Apple Maps
WFD catchment
Foulness from Black Beck to Market Weighton Canal (GB104026066690)
2024 spills / hours
6 / 68
Long-term average
11.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 222 hours spilling →
Main Drain 16 222 up 167% 100%
Burton Agnes South CSO
Overflow on sewer network
Company site name
BURTON AGNES SOUTH/CSO
EA ID / permit
YWS01733 · WRA8341
Outlet location
TA1045762532 (OS grid reference) · View on Apple Maps
WFD catchment
Gransmoor Drain (Burton Agnes to Lissett Area) (GB104026066630)
2024 spills / hours
44 / 239
Long-term average
54.7 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 222 hours spilling →
Clvrt Trib Gransmoor Drain 39 222 down 11% 100%
Eastburn Old STW CSO
Overflow on sewer network
Company site name
EASTBURN WKS/CSO
EA ID / permit
YWS02116 · WRA9223
Outlet location
SE0191044960 (OS grid reference) · View on Apple Maps
WFD catchment
Eastburn Beck from Lothersdale Beck to River Aire (GB104027062960)
2024 spills / hours
75 / 289
Long-term average
49.2 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 221 hours spilling →
Mill Stream 59 221 down 21% 100%
Crofton STW
Inlet overflow at sewage works
Sewage works
Crofton
Company site name
CROFTON/STW
EA ID / permit
YWS00094 · 2207
Outlet location
SE3629018470 (OS grid reference) · View on Apple Maps
WFD catchment
Oakenshaw Beck from Source to River Calder (GB104027062560)
2024 spills / hours
13 / 22
Long-term average
17.2 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 220 hours spilling →
Oakenshaw Beck 50 220 up 285% 100%
Cattal Sewage Treatment Works
Inlet overflow at sewage works
Sewage works
Cattal
Company site name
CATTAL/STW
EA ID / permit
YWS00245 · 27/21/0166
Outlet location
SE4465053990 (OS grid reference) · View on Apple Maps
WFD catchment
River Nidd from Crimple Beck to River Ouse (GB104027068292)
2024 spills / hours
32 / 202
Long-term average
30.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 220 hours spilling →
River Nidd 28 220 down 13% 100%
Long Lane STW
Storm tank at sewage works
Sewage works
Long Lane
Company site name
LONG LANE/STW
EA ID / permit
YWS00081 · 2081
Outlet location
SK43896201 (OS grid reference) · View on Apple Maps
WFD catchment
Rother, Doe Lea to Don (GB104027057772)
2024 spills / hours
72 / 463
Long-term average
33.0 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 219 hours spilling →
River Rother 22 219 down 69% 94%

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.