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
Selby Sewage Treament Works
Storm tank at sewage works
Sewage works
Selby Sewage Treament Works
Company site name
SELBY/NO 2 STW
EA ID / permit
YWS01047 · QR.27/24/0096
Outlet location
SE6356031650 (OS grid reference) · View on Apple Maps
WFD catchment
Ouse from R Wharfe to Upper Humber (GB104027064270)
2024 spills / hours
43 / 374
Long-term average
42.2 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 219 hours spilling →
The River Ouse (Tidal) 38 219 down 12% 100%
Wath (Ripon) Sewage Works
Storm tank at sewage works
Sewage works
Wath
Company site name
WATH RIPON/STW/3XDWF OVERFLOW
EA ID / permit
YWS00294 · 27/22/0079
Outlet location
SE3253076630 (OS grid reference) · View on Apple Maps
WFD catchment
Ure from Thornton Steward Beck to River Skell (GB104027069461)
2024 spills / hours
58 / 355
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 218 hours spilling →
Norton Beck 47 218 down 19% 100%
Lambra Road CSO
Overflow on sewer network
Company site name
LAMBRA ROAD/CSO
EA ID / permit
YWS01414 · WRA7491
Outlet location
SE3501006110 (OS grid reference) · View on Apple Maps
WFD catchment
River Dearne from Cawthorne Dyke to Lundwood STW (GB104027063171)
2024 spills / hours
70 / 206
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 ongoing, UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 218 hours spilling →
Sough Dyke (Culvert) 53 218 down 24% 100%
Permit applied for
Overflow on sewer network
Company site name
KILNERS BRIDGE DENABY/CSO
EA ID / permit
YWS02256 · Permit applied for
Outlet location
SK5039599886 (OS grid reference) · View on Apple Maps
WFD catchment
Don from River Dearne to Mill Dyke (GB104027064242)
2024 spills / hours
32 / 253
Long-term average
33.3 spills a year (monitored since 2023)
Investigation
Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation ongoing
Improvement
Operational improvement ongoing
Volume & pollution
Estimate from 218 hours spilling →
Permit applied for 23 218 down 28% 100%
Gilstead Lane 128 CSO
Overflow on sewer network
Company site name
GILSTEAD LANE 128/CSO
EA ID / permit
YWS01610 · WRA8139
Outlet location
SE1283539264 (OS grid reference) · View on Apple Maps
WFD catchment
Aire (R Worth to Gill Beck) (GB104027063034)
2024 spills / hours
76 / 287
Long-term average
78.3 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing
Improvement
Operational improvement completed
Volume & pollution
Estimate from 218 hours spilling →
Loadpit Beck 73 218 down 4% 100%
Sandybridge Lane No 3 SPS
Overflow on sewer network
Company site name
SANDYBRIDGE LANE/NO 3 CSO
EA ID / permit
YWS01462 · WRA7703
Outlet location
SE3876311673 (OS grid reference) · View on Apple Maps
WFD catchment
Cudworth Dyke from Source to River Dearne (GB104027063230)
2024 spills / hours
67 / 326
Long-term average
44.3 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 217 hours spilling →
Hemp Dike 45 217 down 33% 100%
Caldervale (Wakefield) STW
Inlet overflow at sewage works
Sewage works
Caldervale
Company site name
CALDER VALE/STW/6XDWF OVERFLOW
EA ID / permit
YWS00831 · C4106
Outlet location
SE3574021350 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Chald to River Aire (GB104027062632)
2024 spills / hours
75 / 330
Long-term average
51.5 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 216 hours spilling →
River Calder 38 216 down 49% 100%
Leymoor Road CSO
Overflow on sewer network
Company site name
LEYMOOR ROAD/CSO
EA ID / permit
YWS01872 · WRA8587
Outlet location
SE1086316644 (OS grid reference) · View on Apple Maps
WFD catchment
River Colne from Wessenden Brook to R Holme (GB104027063330)
2024 spills / hours
85 / 212
Long-term average
65.8 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 215 hours spilling →
Longwood Brook 76 215 down 11% 100%
Middleton (Ilkley) Pumping Station
Storm discharge at pumping station
Company site name
ILKLEY MIDDLETON/CSO
EA ID / permit
YWS00176 · 27/19/0052
Outlet location
SE1215048470 (OS grid reference) · View on Apple Maps
WFD catchment
Wharfe from Barben Beck/River Dibb to Hundwith Beck (GB104027064257)
Bathing water
Wharfe at Cromwheel, Ilkley
2024 spills / hours
38 / 282
Long-term average
36.0 spills a year (monitored since 2020)
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 215 hours spilling →
River Wharfe 24 215 down 37% 100%
Rivelin Valley 3 CSO
Overflow on sewer network
Company site name
RIVELIN VALLEY 3/CSO
EA ID / permit
YWS01172 · WADC1286
Outlet location
SK3143087987 (OS grid reference) · View on Apple Maps
WFD catchment
Rivelin from Source to River Loxley (GB104027057340)
2024 spills / hours
60 / 244
Long-term average
68.7 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 214 hours spilling →
River Rivelin 56 214 down 7% 100%
Carleton No 2 STW
Inlet overflow at sewage works
Sewage works
Carleton
Company site name
CARLETON/NO 2 STW
EA ID / permit
YWS00770 · 381
Outlet location
SE4632019380 (OS grid reference) · View on Apple Maps
WFD catchment
Went from Hoyle Mill Stream to Blowell Drain (GB104027063360)
2024 spills / hours
68 / 254
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 214 hours spilling →
River Little Went 60 214 down 12% 99%
Titanic Mills CSO
Overflow on sewer network
Company site name
TITANIC MILLS/CSO
EA ID / permit
YWS00969 · EPRTP3829GA
Outlet location
SE0994714890 (OS grid reference) · View on Apple Maps
WFD catchment
River Colne from Wessenden Brook to R Holme (GB104027063330)
2024 spills / hours
26 / 93
Long-term average
12.8 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Operational investigation ongoing
Improvement
Operational improvement ongoing
Volume & pollution
Estimate from 212 hours spilling →
River Colne 50 212 up 92% 100%
Park Mill CSO
Overflow on sewer network
Company site name
PARK MILL/CSO
EA ID / permit
YWS00681 · 3212(SS)
Outlet location
SE2599911667 (OS grid reference) · View on Apple Maps
WFD catchment
Dearne from Source to Bentley Brook (GB104027063220)
2024 spills / hours
54 / 317
Long-term average
50.7 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 212 hours spilling →
River Dearne 43 212 down 20% 100%
Watton WwTW
Storm tank at sewage works
Sewage works
Watton
Company site name
WATTON/STW
EA ID / permit
YWS00618 · 2704
Outlet location
TA0146049830 (OS grid reference) · View on Apple Maps
WFD catchment
Middleton on the Wolds and Watton Beck (GB104026066980)
2024 spills / hours
36 / 250
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 211 hours spilling →
Watton Beck 35 211 down 3% 100%
Richmond SSO
Overflow on sewer network
Company site name
LOMBARDS WYND/2 CSO
EA ID / permit
YWS02236 · YWUCD2/82
Outlet location
NZ1759501008 (OS grid reference) · View on Apple Maps
WFD catchment
Swale from Clapgate Beck to Bedale Beck (GB104027069122)
2024 spills / hours
91 / 318
Long-term average
89.0 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 211 hours spilling →
River Swale 77 211 down 15% 100%
Field 7500 CSO
Overflow on sewer network
Company site name
FIELD 7500/CSO
EA ID / permit
YWS01312 · WADC921
Outlet location
SE4481257977 (OS grid reference) · View on Apple Maps
WFD catchment
River Nidd from Crimple Beck to River Ouse (GB104027068292)
2024 spills / hours
73 / 221
Long-term average
41.7 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 210 hours spilling →
Whixley Cut 58 210 down 21% 98%
St Peg Lane CSO
Overflow on sewer network
Company site name
ST PEG LANE/NO 2 CSO
EA ID / permit
YWS00111 · 2281
Outlet location
SE1953025130 (OS grid reference) · View on Apple Maps
WFD catchment
Spen Beck from Source to River Calder (GB104027062710)
2024 spills / hours
37 / 215
Long-term average
36.5 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 209 hours spilling →
River Spen 39 209 up 5% 100%
Helmsley Sewage Treatment Works
Storm tank at sewage works
Sewage works
Helmsley
Company site name
HELMSLEY/STW
EA ID / permit
YWS00485 · 27/25/0082
Outlet location
SE6235082880 (OS grid reference) · View on Apple Maps
WFD catchment
River Rye from River Seph to River Riccal (GB104027068200)
2024 spills / hours
59 / 298
Long-term average
57.2 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 209 hours spilling →
River Rye 50 209 down 15% 100%
New Road CSO
Overflow on sewer network
Company site name
NEW ROAD/CSO
EA ID / permit
YWS01156 · WADC1161
Outlet location
SE0415625805 (OS grid reference) · View on Apple Maps
WFD catchment
Luddenden Brook from Source to River Calder (GB104027062770)
2024 spills / hours
59 / 426
Long-term average
40.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 208 hours spilling →
Luddenden Brook 19 208 down 68% 100%
Dobb Lane No 2 CSO
Overflow on sewer network
Company site name
DOBB LANE/NO 2 CSO
EA ID / permit
YWS01755 · WRA8425
Outlet location
SE1261207087 (OS grid reference) · View on Apple Maps
WFD catchment
River Holme from Source to New Mill Dike (GB104027057600)
2024 spills / hours
33 / 130
Long-term average
46.8 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 207 hours spilling →
Stubbin Clough 39 207 up 18% 100%
Scrooby Street CSO
Overflow on sewer network
Company site name
SCROOBY STREET/CSO
EA ID / permit
YWS00880 · C5341
Outlet location
SK4275095420 (OS grid reference) · View on Apple Maps
WFD catchment
Greasbrough Dike from Source to River Don (GB104027057420)
2024 spills / hours
58 / 269
Long-term average
48.2 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 207 hours spilling →
Greasbrough Dyke 37 207 down 36% 96%
Esholt Lane CSO
Overflow on sewer network
Company site name
ESHOLT LANE/NO 1 CSO
EA ID / permit
YWS01809 · WRA8498
Outlet location
SE1727039570 (OS grid reference) · View on Apple Maps
WFD catchment
Aire (R Worth to Gill Beck) (GB104027063034)
2024 spills / hours
67 / 210
Long-term average
59.8 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 207 hours spilling →
River Aire 46 207 down 31% 96%
Branksome Drive CSO
Overflow on sewer network
Company site name
BRANKSOME DRIVE/CSO
EA ID / permit
YWS01899 · WRA8646
Outlet location
SE1235537874 (OS grid reference) · View on Apple Maps
WFD catchment
Aire (R Worth to Gill Beck) (GB104027063034)
2024 spills / hours
24 / 86
Long-term average
60.6 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
Operational improvement completed
Volume & pollution
Estimate from 207 hours spilling →
River Aire 56 207 up 133% 100%
Permit applied for
Inlet overflow at sewage works
Sewage works
Permit Applied For
Company site name
BOTTON/STW
EA ID / permit
YWS00043 · Permit applied for
Outlet location
NZ6930004400 (OS grid reference) · View on Apple Maps
WFD catchment
Danby Beck catchment (trib of Esk) (GB104027068110)
2024 spills / hours
44 / 297
Long-term average
28.8 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 207 hours spilling →
Permit applied for 34 207 down 23% 100%
Thorne STW
Storm tank at sewage works
Sewage works
Thorne
Company site name
THORNE/STW
EA ID / permit
YWS00701 · 3332
Outlet location
SE6746014680 (OS grid reference) · View on Apple Maps
WFD catchment
Don from Mill Dyke to River Ouse (GB104027064243)
2024 spills / hours
31 / 192
Long-term average
38.5 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 204 hours spilling →
River Don (Tidal) 31 204 no change 92%
Leven WwTW
Storm tank at sewage works
Sewage works
Leven
Company site name
LEVEN/STW
EA ID / permit
YWS01376 · WRA7350
Outlet location
TA1031044250 (OS grid reference) · View on Apple Maps
WFD catchment
Foredyke Stream Lower to Holderness Dr (GB104026066910)
2024 spills / hours
8 / 76
Long-term average
20.5 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 204 hours spilling →
Leven Town Drain 16 204 up 100% 100%
Wood Bottom CSO
Overflow on sewer network
Company site name
WOOD BOTTOM/CSO
EA ID / permit
YWS01401 · WRA7455
Outlet location
SE0536012050 (OS grid reference) · View on Apple Maps
WFD catchment
River Colne from Wessenden Brook to R Holme (GB104027063330)
2024 spills / hours
66 / 235
Long-term average
79.7 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 204 hours spilling →
River Colne 57 204 down 14% 100%
Husthwaite STW
Inlet overflow at sewage works
Sewage works
Husthwaite
Company site name
HUSTHWAITE/STW
EA ID / permit
YWS00374 · 27/23/0280
Outlet location
SE5150075310 (OS grid reference) · View on Apple Maps
WFD catchment
Birdforth/Green's Bks Catch (trib of Swale) (GB104027068790)
2024 spills / hours
90 / 320
Long-term average
63.7 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 202 hours spilling →
Elphin Beck 69 202 down 23% 100%
Blackburn Meadows Wastewater Works
Inlet overflow at sewage works
Sewage works
Blackburn Meadows
Company site name
BLACKBURN MEADOWS/STW
EA ID / permit
YWS00902 · E25
Outlet location
SK4025092110 (OS grid reference) · View on Apple Maps
WFD catchment
Don from River Don Works to River Rother (GB104027057413)
2024 spills / hours
33 / 345
Long-term average
30.7 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 202 hours spilling →
River Don 21 202 down 36% 100%
Bagley Beck Rodley CSO
Overflow on sewer network
Company site name
BAGLEY BECK RODLEY/CSO
EA ID / permit
YWS01370 · WRA7339
Outlet location
SE2249036490 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
71 / 329
Long-term average
43.8 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 202 hours spilling →
Bagley Beck 43 202 down 39% 100%
Britannia Inn CSO
Overflow on sewer network
Company site name
TADCASTER EAST/CSO
EA ID / permit
YWS00208 · 27/20/0113
Outlet location
SE4884043370 (OS grid reference) · View on Apple Maps
WFD catchment
Wharfe from Collingham Beck to Tadcaster Weir (GB104027064255)
2024 spills / hours
31 / 238
Long-term average
66.2 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Operational investigation ongoing
Improvement
UWWTR improvement ongoing
Volume & pollution
Estimate from 200 hours spilling →
River Wharfe 39 200 up 26% 100%
Manse Lane 57 CSO
Overflow on sewer network
Company site name
MANSE LANE 57/CSO
EA ID / permit
YWS00693 · 3286(SS)
Outlet location
SE3647556545 (OS grid reference) · View on Apple Maps
WFD catchment
Nidd from Low Bridge on Briggate (Knaresborough) to Crimple Beck (GB104027068298)
2024 spills / hours
56 / 237
Long-term average
31.8 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 200 hours spilling →
River Nidd 59 200 up 5% 99%
Heckmondwike No 2 CSO
Overflow on sewer network
Company site name
HECKMONDWIKE/NO 2 CSO
EA ID / permit
YWS01667 · WRA8208
Outlet location
SE2206622513 (OS grid reference) · View on Apple Maps
WFD catchment
Spen Beck from Source to River Calder (GB104027062710)
2024 spills / hours
28 / 243
Long-term average
42.7 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 200 hours spilling →
River Spen 23 200 down 18% 100%
Norton No. 2 STW
Storm tank at sewage works
Sewage works
Norton
Company site name
NORTON/NO 2 STW
EA ID / permit
YWS00771 · 3816(SS)
Outlet location
SE5490016200 (OS grid reference) · View on Apple Maps
WFD catchment
Went from Hoyle Mill Stream to Blowell Drain (GB104027063360)
2024 spills / hours
26 / 234
Long-term average
23.8 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 199 hours spilling →
River Went 22 199 down 15% 99%
Harrogate Road 135 CSO
Overflow on sewer network
Company site name
HARROGATE ROAD 135/CSO
EA ID / permit
YWS01531 · WRA7976
Outlet location
SE3038237910 (OS grid reference) · View on Apple Maps
WFD catchment
Meanwood Beck from Source to River Aire (GB104027062900)
2024 spills / hours
73 / 226
Long-term average
69.3 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 199 hours spilling →
King Lane Beck 67 199 down 8% 100%
Eastmoor CSO
Overflow on sewer network
Company site name
EASTMOOR/CSO
EA ID / permit
YWS01145 · WADC1082
Outlet location
SE3574121362 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Chald to River Aire (GB104027062632)
2024 spills / hours
74 / 211
Long-term average
65.0 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 199 hours spilling →
River Calder 59 199 down 20% 99%
Driver Terrace CSO
Overflow on sewer network
Company site name
DRIVER TERRACE/CSO
EA ID / permit
YWS02163 · WRA9295
Outlet location
SE2883533475 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
90 / 327
Long-term average
87.8 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 198 hours spilling →
River Aire 80 198 down 11% 100%
Rawcliffe Bankside STW
Inlet overflow at sewage works
Sewage works
Rawcliffe Bankside
Company site name
RAWCLIFFE BANKSIDE/STW
EA ID / permit
YWS01989 · WRA8921
Outlet location
SE6860023410 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Fryston Beck to River Ouse (GB104027063037)
2024 spills / hours
81 / 320
Long-term average
101.0 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 198 hours spilling →
River Aire (Tidal) 61 198 down 25% 100%
Dale Farm NO2 CSO
Overflow on sewer network
Company site name
DALE FARM/NO 2 CSO
EA ID / permit
YWS01526 · WRA7971
Outlet location
SE2299630114 (OS grid reference) · View on Apple Maps
WFD catchment
Low/Wortley/Pudsey Bks from Source to Milshaw Beck (GB104027062830)
2024 spills / hours
82 / 259
Long-term average
78.7 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 197 hours spilling →
Ringshaw Beck 59 197 down 28% 97%
Oulston Sewage Treatment Works
Inlet overflow at sewage works
Sewage works
Oulston
Company site name
OULSTON/STW
EA ID / permit
YWS00426 · 27/24/0311
Outlet location
SE5478074020 (OS grid reference) · View on Apple Maps
WFD catchment
River Kyle from Source to Alne Beck (GB104027068270)
2024 spills / hours
76 / 166
Long-term average
62.5 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 196 hours spilling →
River Kyle 77 196 up 1% 100%
Thirsk Sewage Treatment Works
Storm tank at sewage works
Sewage works
Thirsk
Company site name
THIRSK/STW
EA ID / permit
YWS00336 · 27/23/0138
Outlet location
SE4359780297 (OS grid reference) · View on Apple Maps
WFD catchment
Cod Beck from Spital Beck to River Swale (GB104027068820)
2024 spills / hours
68 / 440
Long-term average
82.7 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 196 hours spilling →
Cod Beck 40 196 down 41% 100%
Elsecar CSO
Overflow on sewer network
Company site name
ELSECAR/CSO
EA ID / permit
YWS01511 · WRA7955
Outlet location
SE3892700362 (OS grid reference) · View on Apple Maps
WFD catchment
Knoll Beck from Source to River Dearne (GB104027057470)
2024 spills / hours
52 / 185
Long-term average
50.3 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 195 hours spilling →
Knoll Beck 47 195 down 10% 100%
Stonegate CSO
Overflow on sewer network
Company site name
HUNMANBY STONEGATE/CSO
EA ID / permit
YWS00519 · 27/27/0067
Outlet location
TA1046977811 (OS grid reference) · View on Apple Maps
WFD catchment
Hertford from Source to River Derwent (GB104027067811)
2024 spills / hours
68 / 234
Long-term average
62.7 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 194 hours spilling →
Trib Main Drain River Hertford 65 194 down 4% 100%
Yws Unknown Sites Default
Overflow on sewer network
Company site name
VICTORIA ROAD SHIPLEY/CSO
EA ID / permit
YWS01074 · S/UD/171/3
Outlet location
SE1040403810 (OS grid reference) · View on Apple Maps
WFD catchment
Aire (R Worth to Gill Beck) (GB104027063034)
2024 spills / hours
71 / 187
Long-term average
54.3 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing
Improvement
Operational improvement completed
Volume & pollution
Estimate from 193 hours spilling →
No Details 61 193 down 14% 95%
Meadow Close CSO
Overflow on sewer network
Company site name
MEADOW CLOSE/CSO
EA ID / permit
YWS00212 · 27/20/0118
Outlet location
SE3696044720 (OS grid reference) · View on Apple Maps
WFD catchment
Collingham Bk Catchment (trib of Wharfe) (GB104027063970)
2024 spills / hours
30 / 124
Long-term average
51.2 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 192 hours spilling →
Keswick Beck 47 192 up 57% 100%
Carleton Road CSO
Overflow on sewer network
Company site name
CARLETON RD SKIPTON/CSO
EA ID / permit
YWS02197 · YWUCD2/103
Outlet location
SD9844450748 (OS grid reference) · View on Apple Maps
WFD catchment
Eller Beck from Haw Beck to River Aire (GB104027063020)
2024 spills / hours
136 / 670
Long-term average
117.3 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Monitor below 90%
Comms failure / issue · Resolved - Oct
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 190 hours spilling →
Eller Beck 49 190 down 64% 90%
Leeming Bar Sewage Treatment Works
Storm tank at sewage works
Sewage works
Leeming Bar
Company site name
LEEMING BAR/STW
EA ID / permit
YWS01337 · WRA6832
Outlet location
SE2995789983 (OS grid reference) · View on Apple Maps
WFD catchment
Bedale/Newton/Burton Bk from Rand Bk to R Swale (GB104027068910)
2024 spills / hours
56 / 390
Long-term average
79.3 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 190 hours spilling →
Bedale Beck 29 190 down 48% 99%
Park Hill Farm CSO
Overflow on sewer network
Company site name
PARK HILL FARM/CSO
EA ID / permit
YWS01164 · WADC1219
Outlet location
SE3574121362 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Chald to River Aire (GB104027062632)
2024 spills / hours
68 / 244
Long-term average
72.5 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 189 hours spilling →
River Calder 55 189 down 19% 97%
Wide Lane Woodlands No 2 CSO
Overflow on sewer network
Company site name
WIDE LANE WOODLANDS/2 CSO
EA ID / permit
YWS00064 · 187
Outlet location
SE2874227950 (OS grid reference) · View on Apple Maps
WFD catchment
Milshaw Beck from Source to Low/Wortley/Pudsey Bks (GB104027062750)
2024 spills / hours
68 / 206
Long-term average
72.3 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 188 hours spilling →
Mill Shaw Beck 49 188 down 28% 96%
Muston SPS
Storm discharge at pumping station
Company site name
MUSTON/CSO
EA ID / permit
YWS00529 · 27/27/0102
Outlet location
TA0956079840 (OS grid reference) · View on Apple Maps
WFD catchment
Hertford from Source to River Derwent (GB104027067811)
2024 spills / hours
27 / 191
Long-term average
25.0 spills a year (monitored since 2020)
Monitor below 90%
Sensor failure / issue · Resolved - January after reporting year
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 188 hours spilling →
Unnamed Trib of Hertford 25 188 down 7% 83%

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.