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
Aberford Road CSO
Overflow on sewer network
Company site name
ABERFORD ROAD/CSO
EA ID / permit
YWS00633 · 2830
Outlet location
SE3480023700 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Chald to River Aire (GB104027062632)
2024 spills / hours
40 / 61
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 188 hours spilling →
River Calder 46 188 up 15% 100%
Spa Mills Bridge St CSO
Overflow on sewer network
Company site name
SPA MILLS BRIDGE ST/CSO
EA ID / permit
YWS01402 · WRA7456
Outlet location
SE0851014140 (OS grid reference) · View on Apple Maps
WFD catchment
River Colne from Wessenden Brook to R Holme (GB104027063330)
2024 spills / hours
51 / 214
Long-term average
61.0 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 188 hours spilling →
River Colne 45 188 down 12% 100%
Warwick Road NO2 CSO
Overflow on sewer network
Company site name
WARWICK ROAD/NO 2 CSO
EA ID / permit
YWS01848 · WRA8554
Outlet location
SE2469123182 (OS grid reference) · View on Apple Maps
WFD catchment
Batley Beck from Source to River Calder (GB104027062670)
2024 spills / hours
70 / 173
Long-term average
67.0 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 188 hours spilling →
Batley Beck 69 188 down 1% 98%
Lemonroyd WwTW
Inlet overflow at sewage works
Sewage works
Lemonroyd
Company site name
LEMONROYD/STW
EA ID / permit
YWS01366 · WRA7220
Outlet location
SE3820028000 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Wyke Beck to Fryston Beck (GB104027063036)
2024 spills / hours
45 / 226
Long-term average
39.4 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 187 hours spilling →
River Aire 43 187 down 4% 100%
Wharncliffe Side SPS
Overflow on sewer network
Company site name
WHARNCLIFFE WEST/CSO
EA ID / permit
YWS02185 · YWUCD1/107
Outlet location
SK2989494525 (OS grid reference) · View on Apple Maps
WFD catchment
Don from Little Don to River Loxley confluence (GB104027057411)
2024 spills / hours
29 / 113
Long-term average
12.8 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 187 hours spilling →
River Don 47 187 up 62% 100%
Marsh Lane SPS & Storm Tank Site
Storm discharge at pumping station
Company site name
KNOTTINGLEY MARSH LN/CSO
EA ID / permit
YWS01438 · WRA7551
Outlet location
SE5100024090 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Fryston Beck to River Ouse (GB104027063037)
2024 spills / hours
31 / 158
Long-term average
33.2 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 186 hours spilling →
River Aire 26 186 down 16% 100%
Main Road Farm CSO
Overflow on sewer network
Company site name
MAIN ROAD FARM/CSO
EA ID / permit
YWS01789 · WRA8465
Outlet location
SK3852069962 (OS grid reference) · View on Apple Maps
WFD catchment
Rother from Redleadmill Brook to Spital Brook (GB104027057630)
2024 spills / hours
42 / 143
Long-term average
49.3 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 185 hours spilling →
River Rother 43 185 up 2% 100%
Unstone SPS
Overflow on sewer network
Company site name
UNSTONE/CSO
EA ID / permit
YWS01980 · WRA8827
Outlet location
SK3754076220 (OS grid reference) · View on Apple Maps
WFD catchment
Drone from Source to River Whitting (GB104027057710)
2024 spills / hours
32 / 249
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 185 hours spilling →
River Drone 27 185 down 16% 100%
Glenholme Road CSO
Overflow on sewer network
Company site name
GLENHOLME ROAD/CSO
EA ID / permit
YWS00872 · C4967
Outlet location
SK4067085390 (OS grid reference) · View on Apple Maps
WFD catchment
Rother, Doe Lea to Don (GB104027057772)
2024 spills / hours
53 / 201
Long-term average
47.7 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 185 hours spilling →
Trib of Shirtcliff Brook 41 185 down 23% 100%
Retford Rd Recreation Ground 3 CSO
Overflow on sewer network
Company site name
RETFORD RD REC GND/2 CSO
EA ID / permit
YWS01533 · WRA7979
Outlet location
SK4317585810 (OS grid reference) · View on Apple Maps
WFD catchment
Rother, Doe Lea to Don (GB104027057772)
2024 spills / hours
61 / 228
Long-term average
57.8 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 185 hours spilling →
River Rother 53 185 down 13% 100%
Snape Sewage Treatment Works
Storm tank at sewage works
Sewage works
Snape
Company site name
SNAPE/STW/3XDWF OVERFLOW
EA ID / permit
YWS00347 · 27/23/0201
Outlet location
SE2734184271 (OS grid reference) · View on Apple Maps
WFD catchment
Old Stell Catchment (trib of Bedale Beck) (GB104027068841)
2024 spills / hours
77 / 965
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
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 184 hours spilling →
Trib of Main Cut 36 184 down 53% 100%
Barlow WwTW
Inlet overflow at sewage works
Sewage works
Barlow
Company site name
BARLOW/STW
EA ID / permit
YWS00047 · 1694
Outlet location
SK3386075680 (OS grid reference) · View on Apple Maps
WFD catchment
Barlow Brook from Source to River Drone (GB104027057700)
2024 spills / hours
53 / 195
Long-term average
54.2 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 184 hours spilling →
Barlow Brook 43 184 down 19% 100%
Horbury STW
Inlet overflow at sewage works
Sewage works
Horbury
Company site name
HORBURY/STW/6XDWF OVERFLOW
EA ID / permit
YWS00833 · C4107
Outlet location
SE3017017420 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Colne to River Chald (GB104027062631)
2024 spills / hours
53 / 178
Long-term average
58.5 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 182 hours spilling →
River Calder 47 182 down 11% 100%
Stillington Road SSO
Overflow on sewer network
Company site name
GREY CLOSE/CSO
EA ID / permit
YWS01188 · WADC1390
Outlet location
SE5805064670 (OS grid reference) · View on Apple Maps
WFD catchment
Huby Burn from Source to New Parks Beck (GB104027063900)
2024 spills / hours
37 / 311
Long-term average
26.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 181 hours spilling →
Trib of the River Kyle 29 181 down 22% 100%
Shaw Mills Sewage Treatment Works
Inlet overflow at sewage works
Sewage works
Shaw Mills
Company site name
SHAW MILLS/STW
EA ID / permit
YWS00228 · 27/21/0091
Outlet location
SE2586062410 (OS grid reference) · View on Apple Maps
WFD catchment
Thornton Beck Catch (Trib of Nidd) (GB104027063850)
2024 spills / hours
74 / 422
Long-term average
87.0 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 181 hours spilling →
Thornton Beck 39 181 down 47% 100%
Hey Clough SPS
Storm discharge at pumping station
Company site name
HEY CLOUGH/CSO
EA ID / permit
YWS01496 · WRA7926
Outlet location
SE0599716361 (OS grid reference) · View on Apple Maps
WFD catchment
Black Brook from Source to River Calder (GB104027062570)
2024 spills / hours
22 / 124
Long-term average
30.2 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 181 hours spilling →
Hey Clough 34 181 up 55% 100%
Grosmont STW
Storm tank at sewage works
Sewage works
Grosmont
Company site name
GROSMONT/STW
EA ID / permit
YWS00608 · 27/29/0106
Outlet location
NZ8262005500 (OS grid reference) · View on Apple Maps
WFD catchment
Esk from Sleddale Beck to Ruswarp (GB104027068150)
2024 spills / hours
23 / 197
Long-term average
23.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 180 hours spilling →
River Esk 22 180 down 4% 100%
Skelmanthorpe CSO
Overflow on sewer network
Company site name
SKELMANTHORPE/CSO
EA ID / permit
YWS00723 · 3494
Outlet location
SE2364211161 (OS grid reference) · View on Apple Maps
WFD catchment
Dearne from Source to Bentley Brook (GB104027063220)
2024 spills / hours
33 / 187
Long-term average
28.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 180 hours spilling →
Trib of Park Gate Dike 27 180 down 18% 100%
Hangingwater Road CSO
Overflow on sewer network
Company site name
HANGINGWATER ROAD/CSO
EA ID / permit
YWS01331 · WRA6682
Outlet location
SK3163085310 (OS grid reference) · View on Apple Maps
WFD catchment
River Porter from Source to River Sheaf (GB104027057760)
2024 spills / hours
65 / 228
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 completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 180 hours spilling →
Porter Brook 55 180 down 15% 100%
Hasland by-Pass CSO
Overflow on sewer network
Company site name
HASLAND BY-PASS/CSO
EA ID / permit
YWS01997 · WRA9089
Outlet location
SK3930670262 (OS grid reference) · View on Apple Maps
WFD catchment
Spital/Calow/Muster Brook (GB104027057640)
2024 spills / hours
37 / 151
Long-term average
58.8 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 180 hours spilling →
Spittal Brook 51 180 up 38% 99%
Huddersfield Road 106 CSO
Overflow on sewer network
Company site name
HUDDERSFIELD RD 106/CSO
EA ID / permit
YWS01902 · WRA8659
Outlet location
SE1099021470 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from Ryburn Confluence to River Colne (GB104027062642)
2024 spills / hours
87 / 266
Long-term average
76.4 spills a year (monitored since 2021)
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 180 hours spilling →
Canker Dyke 77 180 down 11% 100%
Ripon Wpc Works
Inlet overflow at sewage works
Sewage works
Ripon Wpc Works
Company site name
RIPON/STW
EA ID / permit
YWS00282 · 27/22/0052
Outlet location
SE3237070810 (OS grid reference) · View on Apple Maps
WFD catchment
Skell from River Laver to River Ure (GB104027064140)
2024 spills / hours
46 / 152
Long-term average
23.4 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 180 hours spilling →
River Ure 58 180 up 26% 100%
Cononley SPS
Storm discharge at pumping station
Company site name
CONONLEY WORKS/NO 2 CSO
EA ID / permit
YWS01139 · WADC105
Outlet location
SD9946047040 (OS grid reference) · View on Apple Maps
WFD catchment
Aire (Eshton Beck to R Worth) (GB104027063033)
2024 spills / hours
72 / 318
Long-term average
72.8 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 179 hours spilling →
River Aire 60 179 down 17% 100%
Brickyard Cottage SPS
Storm discharge at pumping station
Company site name
BRICK YARD COTTAGES/CSO
EA ID / permit
YWS01028 · NPSWQD010167
Outlet location
SE9920025280 (OS grid reference) · View on Apple Maps
WFD catchment
HUMBER MIDDLE (GB530402609202)
2024 spills / hours
42 / 182
Long-term average
34.0 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 179 hours spilling →
River Humber 55 179 up 31% 98%
Longside Lane Hall CSO
Overflow on sewer network
Company site name
LONGSIDE LANE HALL/CSO
EA ID / permit
YWS01352 · WRA6968
Outlet location
SE1543032970 (OS grid reference) · View on Apple Maps
WFD catchment
Bradford Beck (Clayton Bk to R Aire) (GB104027062862)
2024 spills / hours
15 / 37
Long-term average
40.8 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 178 hours spilling →
Westbrook 34 178 up 127% 100%
Danesmoor WwTW
Inlet overflow at sewage works
Sewage works
Danesmoor
Company site name
DANESMOOR/STW
EA ID / permit
YWS00087 · 2138
Outlet location
SK4076063000 (OS grid reference) · View on Apple Maps
WFD catchment
Rother from Source to Redleadmill Brook (GB104027052280)
2024 spills / hours
37 / 89
Long-term average
60.5 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 176 hours spilling →
River Rother 48 176 up 30% 100%
Pocklington Sewage Treatment Works
Storm tank at sewage works
Sewage works
Pocklington
Company site name
POCKLINGTON/STW
EA ID / permit
YWS00572 · 27/28/0195
Outlet location
SE8004047310 (OS grid reference) · View on Apple Maps
WFD catchment
Pocklington Beck from Source to Bielby beck (GB104027063480)
2024 spills / hours
77 / 900
Long-term average
39.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 176 hours spilling →
Pocklington Beck 30 176 down 61% 100%
Tivydale Road CSO
Overflow on sewer network
Company site name
TIVYDALE ROAD/CSO
EA ID / permit
YWS01197 · WADC1432
Outlet location
SE2790007392 (OS grid reference) · View on Apple Maps
WFD catchment
Cawthorne Dyke from Source to Silkstone Beck (GB104027063150)
2024 spills / hours
21 / 64
Long-term average
12.2 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 176 hours spilling →
Tanyard Beck 34 176 up 62% 97%
Wide Lane Morley CSO
Overflow on sewer network
Company site name
WIDE LANE MORLEY/CSO
EA ID / permit
YWS01393 · WRA7407
Outlet location
SE2876827575 (OS grid reference) · View on Apple Maps
WFD catchment
Milshaw Beck from Source to Low/Wortley/Pudsey Bks (GB104027062750)
2024 spills / hours
66 / 151
Long-term average
56.3 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 176 hours spilling →
Owler Beck 58 176 down 12% 100%
Retford Road CSO
Overflow on sewer network
Company site name
RETFORD RD REC GND/1 CSO
EA ID / permit
YWS00631 · 2805
Outlet location
SK4317085820 (OS grid reference) · View on Apple Maps
WFD catchment
Rother, Doe Lea to Don (GB104027057772)
2024 spills / hours
24 / 252
Long-term average
55.2 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 176 hours spilling →
River Rother 19 176 down 21% 100%
Keighley (Marley) STW
Inlet overflow at sewage works
Sewage works
Keighley
Company site name
KEIGHLEY MARLEY/STW
EA ID / permit
YWS01364 · WRA7172
Outlet location
SE0870841406 (OS grid reference) · View on Apple Maps
WFD catchment
Aire (R Worth to Gill Beck) (GB104027063034)
2024 spills / hours
61 / 312
Long-term average
46.3 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 174 hours spilling →
River Aire 37 174 down 39% 100%
Tollerton Sewage Treatment Works
Storm tank at sewage works
Sewage works
Tollerton
Company site name
TOLLERTON/STW
EA ID / permit
YWS00427 · 27/24/0321
Outlet location
SE5110064983 (OS grid reference) · View on Apple Maps
WFD catchment
Kyle from Derrings Beck to New Parks Beck (GB104027063860)
2024 spills / hours
56 / 220
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 173 hours spilling →
Sidings Drain 39 173 down 30% 100%
Nethergate Sewage Pumping Stn
Storm discharge at pumping station
Company site name
NETHERGATE/NO 2 SPS
EA ID / permit
YWS01476 · WRA7809
Outlet location
TA0595058740 (OS grid reference) · View on Apple Maps
WFD catchment
Nafferton Beck from Source to to Driffield Canal (GB104026067090)
2024 spills / hours
13 / 71
Long-term average
8.0 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Resolved - Nov
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 173 hours spilling →
Nafferton Beck 13 173 no change 37%
Thornhill Dewsbury NO1 CSO
Overflow on sewer network
Company site name
THORNHILL DEWSBURY/1 CSO
EA ID / permit
YWS01857 · WRA8568
Outlet location
SE2548920237 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Colne to River Chald (GB104027062631)
2024 spills / hours
41 / 218
Long-term average
48.4 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 173 hours spilling →
River Calder 36 173 down 12% 75%
Coley Beck CSO
Overflow on sewer network
Company site name
COLEY BECK/CSO
EA ID / permit
YWS00899 · EPR/AP3829PK
Outlet location
SE1382626283 (OS grid reference) · View on Apple Maps
WFD catchment
Clifton Beck from Source to River Calder (GB104027062700)
2024 spills / hours
50 / 150
Long-term average
49.5 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 173 hours spilling →
Not matched in Ea Consents Database 50 173 no change 100%
Lockton Sewage Treatment Works
Inlet overflow at sewage works
Sewage works
Lockton
Company site name
LOCKTON/STW
EA ID / permit
YWS00497 · 27/25/0125
Outlet location
SE8416090020 (OS grid reference) · View on Apple Maps
WFD catchment
Levisham Beck from Source to Pickering Beck (GB104027068520)
2024 spills / hours
85 / 222
Long-term average
82.8 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 172 hours spilling →
Trib of Levisham Beck 80 172 down 6% 100%
Crow Edge STW
Storm tank at sewage works
Sewage works
Crow Edge
Company site name
CROW EDGE/STW
EA ID / permit
YWS00039 · 1614
Outlet location
SE1935403986 (OS grid reference) · View on Apple Maps
WFD catchment
Don from Source to Scout Dyke (GB104027057500)
2024 spills / hours
47 / 286
Long-term average
40.3 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 172 hours spilling →
Sledbrook Dyke 28 172 down 40% 100%
Thurnscoe CSO
Overflow on sewer network
Company site name
THURNSCOE/CSO
EA ID / permit
YWS00754 · 3728
Outlet location
SE4462605335 (OS grid reference) · View on Apple Maps
WFD catchment
Ings/Carr/Thurnscoe Dikes from Source to Dearne (GB104027057550)
2024 spills / hours
45 / 227
Long-term average
59.3 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 172 hours spilling →
Thurnscoe Dike 28 172 down 38% 100%
Hedon STW
Storm tank at sewage works
Sewage works
Hedon
Company site name
HEDON/STW
EA ID / permit
YWS01450 · WRA7618
Outlet location
TA1712025070 (OS grid reference) · View on Apple Maps
WFD catchment
HUMBER LOWER (GB530402609201)
2024 spills / hours
31 / 162
Long-term average
28.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 171 hours spilling →
River Humber 20 171 down 35% 98%
Keighley Road 76 CSO
Overflow on sewer network
Company site name
KEIGHLEY ROAD 76/CSO
EA ID / permit
YWS00690 · 3282
Outlet location
SE0387545136 (OS grid reference) · View on Apple Maps
WFD catchment
Aire (Eshton Beck to R Worth) (GB104027063033)
2024 spills / hours
63 / 251
Long-term average
70.8 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 170 hours spilling →
River Aire 54 170 down 14% 99%
Goathland Greenway SPS
Storm discharge at pumping station
Company site name
GOATHLAND GRNWAY/CSO
EA ID / permit
YWS00589 · 27/29/0059
Outlet location
NZ8364601426 (OS grid reference) · View on Apple Maps
WFD catchment
Eller beck from Source to Murk Esk (GB104027068050)
2024 spills / hours
28 / 225
Long-term average
25.3 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 169 hours spilling →
Eller Beck 23 169 down 18% 100%
Church Lane SPS
Storm discharge at pumping station
Company site name
CHURCH LANE DRIFFIELD/CSO
EA ID / permit
YWS01310 · WADC91
Outlet location
TA0098057970 (OS grid reference) · View on Apple Maps
WFD catchment
West Beck Upper (GB104026067080)
2024 spills / hours
87 / 1,836
Long-term average
40.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 168 hours spilling →
Pond 21 168 down 76% 100%
Apperley Road Public Sewer
Overflow on sewer network
Company site name
APPERLEY ROAD 292/CSO
EA ID / permit
YWS01670 · WRA8210
Outlet location
SE1927038170 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
104 / 310
Long-term average
80.0 spills a year (monitored since 2023)
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 168 hours spilling →
River Aire 66 168 down 37% 98%
Gibson Lane No 2 CSO
Overflow on sewer network
Company site name
GIBSON LANE/NO 2 CSO
EA ID / permit
YWS01823 · WRA8520
Outlet location
SK2699298596 (OS grid reference) · View on Apple Maps
WFD catchment
Little Don from Source to River Don (GB104027057460)
2024 spills / hours
54 / 69
Long-term average
55.8 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 168 hours spilling →
Little Don River 68 168 up 26% 100%
Moss Bridge Road CSO
Overflow on sewer network
Company site name
MOSS BRIDGE ROAD/CSO
EA ID / permit
YWS01371 · WRA7340
Outlet location
SE2296636235 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
17 / 64
Long-term average
54.5 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 167 hours spilling →
River Aire 51 167 up 200% 99%
Tockwith Treatment Works
Storm tank at sewage works
Sewage works
Tockwith Treatment Works
Company site name
TOCKWITH/STW
EA ID / permit
YWS00244 · 27/21/0159
Outlet location
SE4657053630 (OS grid reference) · View on Apple Maps
WFD catchment
River Nidd from Crimple Beck to River Ouse (GB104027068292)
2024 spills / hours
51 / 657
Long-term average
40.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 167 hours spilling →
Fleet Beck 20 167 down 61% 100%
Oldstead Sewage Treatment Works
Inlet overflow at sewage works
Sewage works
Oldstead
Company site name
OLDSTEAD/STW
EA ID / permit
YWS00361 · 27/23/0249
Outlet location
SE5288179640 (OS grid reference) · View on Apple Maps
WFD catchment
Birdforth/Green's Bks Catch (trib of Swale) (GB104027068790)
2024 spills / hours
21 / 123
Long-term average
10.0 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 165 hours spilling →
Unnamed Trib of Wakendale Beck 24 165 up 14% 100%
Ellerbeck CSO
Overflow on sewer network
Company site name
OLD CATTLE MARKET/CSO
EA ID / permit
YWS01309 · WADC908
Outlet location
SD9860051380 (OS grid reference) · View on Apple Maps
WFD catchment
Eller Beck from Haw Beck to River Aire (GB104027063020)
2024 spills / hours
74 / 198
Long-term average
87.5 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 165 hours spilling →
Waller Hill Beck 65 165 down 12% 100%
Fitzwilliam Centre CSO
Overflow on sewer network
Company site name
FITZWILLIAM CENTRE/CSO
EA ID / permit
YWS01089 · WA6004
Outlet location
SK4480294156 (OS grid reference) · View on Apple Maps
WFD catchment
Don from Greasborough Dyke to River Dearne (GB104027057452)
2024 spills / hours
59 / 204
Long-term average
59.5 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 165 hours spilling →
River Don 45 165 down 24% 100%
St James Green SPS
Storm discharge at pumping station
Company site name
ST JAMES GREEN/CSO
EA ID / permit
YWS00382 · 27/23/0353
Outlet location
SE4314282156 (OS grid reference) · View on Apple Maps
WFD catchment
Cod Beck from Spital Beck to River Swale (GB104027068820)
2024 spills / hours
59 / 289
Long-term average
54.2 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 165 hours spilling →
Cod Beck 45 165 down 24% 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.