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
Bradley Mills Road SPS
Storm discharge at pumping station
Company site name
BRADLEY MILLS/2 CSO
EA ID / permit
YWS01361 · WRA7164
Outlet location
SE1550017750 (OS grid reference) · View on Apple Maps
WFD catchment
River Colne from River Holme to River Calder (GB104027062550)
2024 spills / hours
2 / 1.8
Long-term average
1.8 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 37 hours spilling →
River Colne 3 37 up 50% 100%
Allerton Bywater CSO
Storm discharge at pumping station
Company site name
ALLERTON BYWATER/SPS
EA ID / permit
YWS02293 · WRA7536
Outlet location
SE4226227568 (OS grid reference) · View on Apple Maps
WFD catchment
Lin Dike from Source to River Aire (GB104027062810)
2024 spills / hours
12 / 67
Long-term average
8.3 spills a year (monitored since 2023)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 37 hours spilling →
Trib of River Aire 6 37 down 50% 94%
Stadium Way CSO
Overflow on sewer network
Company site name
STADIUM WAY/CSO
EA ID / permit
YWS00694 · 3295
Outlet location
SK4350894264 (OS grid reference) · View on Apple Maps
WFD catchment
Don from Greasborough Dyke to River Dearne (GB104027057452)
2024 spills / hours
10 / 24
Long-term average
5.4 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 36 hours spilling →
Parish Dyke (Culverted) 8 36 down 20% 100%
Barnsley Mfi CSO
Overflow on sewer network
Company site name
BARNSLEY MFI/CSO
EA ID / permit
YWS00745 · 3671
Outlet location
SE3510007200 (OS grid reference) · View on Apple Maps
WFD catchment
River Dearne from Cawthorne Dyke to Lundwood STW (GB104027063171)
2024 spills / hours
14 / 28
Long-term average
15.0 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 36 hours spilling →
River Dearne 15 36 up 7% 94%
Permit applied for
Overflow on sewer network
Company site name
LEEMING WATER LANE/CSO
EA ID / permit
YWS02257 · Permit applied for
Outlet location
SE2929289569 (OS grid reference) · View on Apple Maps
WFD catchment
Bedale/Newton/Burton Bk from Rand Bk to R Swale (GB104027068910)
2024 spills / hours
41 / 244
Long-term average
27.0 spills a year (monitored since 2023)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 36 hours spilling →
Permit applied for 16 36 down 61% 100%
Seamer Sewage Treatment Works
Storm tank at sewage works
Sewage works
Seamer
Company site name
SEAMER/STW
EA ID / permit
YWS01050 · QR.27/26/0011
Outlet location
TA0085082890 (OS grid reference) · View on Apple Maps
WFD catchment
Seamer Drain from Source to River Hertford (GB104027067880)
2024 spills / hours
28 / 310
Long-term average
22.8 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 36 hours spilling →
Seamer Drain 5 36 down 82% 100%
Works Road CSO
Overflow on sewer network
Company site name
WORKS ROAD/CSO
EA ID / permit
YWS01505 · WRA7949
Outlet location
SK4155775164 (OS grid reference) · View on Apple Maps
WFD catchment
Rother, Spittal Brook to Doe Lea (GB104027057771)
2024 spills / hours
18 / 53
Long-term average
24.0 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Resolved - May
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 36 hours spilling →
River Rother 11 36 down 39% 62%
Ledgard Way CSO
Overflow on sewer network
Company site name
LEDGARD WAY/CSO
EA ID / permit
YWS01995 · WRA9084
Outlet location
SE2774134099 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
5 / 9.3
Long-term average
28.5 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 36 hours spilling →
River Aire 27 36 up 440% 96%
Crossflatts No 2 SPS
Storm discharge at pumping station
Company site name
CROSSFLATTS/NO 2 CSO
EA ID / permit
YWS01468 · WRA7739
Outlet location
SE0997040220 (OS grid reference) · View on Apple Maps
WFD catchment
Aire (R Worth to Gill Beck) (GB104027063034)
2024 spills / hours
64 / 777
Long-term average
31.2 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 36 hours spilling →
River Aire 11 36 down 83% 100%
Water Street No 2 CSO
Overflow on sewer network
Company site name
WATER STREET/NO 2 CSO
EA ID / permit
YWS01763 · WRA8435
Outlet location
SE1369015140 (OS grid reference) · View on Apple Maps
WFD catchment
Holme from New Mill Dike to R Colne (GB104027063301)
2024 spills / hours
33 / 33
Long-term average
26.0 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 36 hours spilling →
River Holme 32 36 down 3% 100%
Mill Green CSO
Overflow on sewer network
Company site name
MILL GREEN/CSO
EA ID / permit
YWS02200 · YWUCD2/110
Outlet location
SK4290074700 (OS grid reference) · View on Apple Maps
WFD catchment
Rother, Spittal Brook to Doe Lea (GB104027057771)
2024 spills / hours
50 / 308
Long-term average
10.7 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 35 hours spilling →
River Rother 14 35 down 72% 94%
River Street CSO
Overflow on sewer network
Company site name
RIVER STREET/CSO
EA ID / permit
YWS01173 · WADC1289
Outlet location
SE1566022060 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from Ryburn Confluence to River Colne (GB104027062642)
2024 spills / hours
16 / 32
Long-term average
35.0 spills a year (monitored since 2020)
Monitor below 90%
Sensor failure / issue · Resolved - Sep
Investigation
Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 35 hours spilling →
River Calder 19 35 up 19% 33%
Gristhorpe Tank CSO
Overflow on sewer network
Company site name
GRISTHORPE TANK/CSO
EA ID / permit
YWS00763 · 3792
Outlet location
TA0889781885 (OS grid reference) · View on Apple Maps
WFD catchment
Hertford from Source to River Derwent (GB104027067811)
2024 spills / hours
10 / 62
Long-term average
8.0 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 35 hours spilling →
Trib of River Hertford 6 35 down 40% 100%
Spring Wood CSO
Overflow on sewer network
Company site name
SPRING WOOD/CSO
EA ID / permit
YWS02158 · WRA9276
Outlet location
SE1623108149 (OS grid reference) · View on Apple Maps
WFD catchment
New Mill Dike from Source to River Holme (GB104027057610)
2024 spills / hours
43 / 103
Long-term average
39.4 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 35 hours spilling →
Jackson Bridge Dike 14 35 down 67% 100%
Ghyll Royd CSO
Overflow on sewer network
Company site name
GHYLL ROYD/CSO
EA ID / permit
YWS00724 · 3495
Outlet location
SE1953041320 (OS grid reference) · View on Apple Maps
WFD catchment
Gill Beck Guisley from Source to River Aire (GB104027062910)
2024 spills / hours
28 / 46
Long-term average
27.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 35 hours spilling →
Nunroyd Beck 18 35 down 36% 100%
Willow Lane CSO
Overflow on sewer network
Company site name
WILLOW LANE/CSO
EA ID / permit
YWS00788 · 55
Outlet location
SE1520017527 (OS grid reference) · View on Apple Maps
WFD catchment
River Colne from River Holme to River Calder (GB104027062550)
2024 spills / hours
37 / 40
Long-term average
37.8 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 35 hours spilling →
River Colne(via Birkby Relief) 27 35 down 27% 100%
Hardstoft SPS
Overflow on sewer network
Company site name
HARDSTOFT/CSO
EA ID / permit
YWS01221 · WADC204
Outlet location
SK4416062790 (OS grid reference) · View on Apple Maps
WFD catchment
Doe Lea from Source to Hawke Brook (GB104027057290)
2024 spills / hours
14 / 37
Long-term average
10.8 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 34 hours spilling →
River Doe Lea 9 34 down 36% 100%
Rectory Farm Sewage Pumping Station
Storm discharge at pumping station
Company site name
SCRAYINGHAM RECTRY FM/CSO
EA ID / permit
YWS00562 · 27/28/0144
Outlet location
SE7311160330 (OS grid reference) · View on Apple Maps
WFD catchment
River Derwent from Kirkham to Elvington Beck (GB104027068312)
2024 spills / hours
1 / 7.3
Long-term average
4.0 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Scheduled
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 34 hours spilling →
Unnamed Trib of Derwent 5 34 up 400% 78%
Damhill No 2 CSO
Overflow on sewer network
Company site name
DAMHILL/NO 2 CSO
EA ID / permit
YWS01517 · WRA7961
Outlet location
SE1909811091 (OS grid reference) · View on Apple Maps
WFD catchment
Fenay beck from Source to River Colne (GB104027063340)
2024 spills / hours
42 / 179
Long-term average
42.2 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Resolved - Jun
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 34 hours spilling →
Shepley Dike 9 34 down 79% 86%
Thornhill Road CSO
Overflow on sewer network
Company site name
THORNHILL ROAD/CSO
EA ID / permit
YWS00083 · 2094
Outlet location
SE2671017940 (OS grid reference) · View on Apple Maps
WFD catchment
Smithy Brook from Source to River Calder (GB104027062510)
2024 spills / hours
14 / 26
Long-term average
9.3 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Resolved - February after reporting year
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 34 hours spilling →
Smithy Brook 3 34 down 79% 27%
Harden Road CSO
Overflow on sewer network
Company site name
HARDEN ROAD/CSO
EA ID / permit
YWS01547 · WRA7996
Outlet location
SE0891637219 (OS grid reference) · View on Apple Maps
WFD catchment
Harden Beck from Source to River Aire (GB104027062870)
2024 spills / hours
27 / 47
Long-term average
30.5 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 34 hours spilling →
Wilsden Beck 16 34 down 41% 100%
Heslington Main Street SPS
Storm discharge at pumping station
Company site name
HESLINGTON MAIN ST/CSO
EA ID / permit
YWS00396 · 27/24/0203
Outlet location
SE6309249951 (OS grid reference) · View on Apple Maps
WFD catchment
Ouse from River Nidd to Stillingfleet Beck (GB104027069593)
2024 spills / hours
48 / 81
Long-term average
16.3 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 34 hours spilling →
Trib of Germany Beck 12 34 down 75% 100%
Mary Lane Darfield CSO
Overflow on sewer network
Company site name
MARY LANE DARFIELD/CSO
EA ID / permit
YWS00991 · EPRUP3227GL
Outlet location
SE4164203820 (OS grid reference) · View on Apple Maps
WFD catchment
Dove from Source to River Dearne (GB104027057510)
2024 spills / hours
31 / 28
Long-term average
17.7 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 34 hours spilling →
River Dove 34 34 up 10% 100%
Eastburn CSO
Overflow on sewer network
Company site name
EASTBURN/CSO
EA ID / permit
YWS01545 · WRA7994
Outlet location
SE0214045305 (OS grid reference) · View on Apple Maps
WFD catchment
Aire (Eshton Beck to R Worth) (GB104027063033)
2024 spills / hours
21 / 81
Long-term average
19.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 34 hours spilling →
River Aire 7 34 down 67% 100%
Sicey Avenue CSO
Overflow on sewer network
Company site name
SICEY AVENUE/CSO
EA ID / permit
YWS01630 · WRA8166
Outlet location
SK3662793759 (OS grid reference) · View on Apple Maps
WFD catchment
Blackburn Brook from Source to River Don (GB104027057440)
2024 spills / hours
33 / 98
Long-term average
30.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 34 hours spilling →
Hartley Brook Dike 5 34 down 85% 97%
Cutler Heights CSO
Overflow on sewer network
Company site name
CUTLER HEIGHTS/CSO
EA ID / permit
YWS01708 · WRA8251
Outlet location
SE1937031174 (OS grid reference) · View on Apple Maps
WFD catchment
Low/Wortley/Pudsey Bks from Source to Milshaw Beck (GB104027062830)
2024 spills / hours
18 / 44
Long-term average
20.6 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 34 hours spilling →
Holme Beck (Culverted) 18 34 no change 100%
Bellevue SPS
Storm discharge at pumping station
Company site name
BELLE VUE/CSO
EA ID / permit
YWS01083 · T/83/45412/O
Outlet location
SE5894002200 (OS grid reference) · View on Apple Maps
WFD catchment
Mother Drain from Source to R Torne (GB104028058440)
2024 spills / hours
11 / 51
Long-term average
3.8 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 33 hours spilling →
The Lady Bank Drain 4 33 down 64% 100%
Great Horton Road CSO
Overflow on sewer network
Company site name
GREAT HORTON ROAD/CSO
EA ID / permit
YWS02166 · WRA9298
Outlet location
SE1448332337 (OS grid reference) · View on Apple Maps
WFD catchment
Bradford Beck (Clayton Bk to R Aire) (GB104027062862)
2024 spills / hours
41 / 51
Long-term average
89.8 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 33 hours spilling →
Horton Beck West Brook Clvrtd 34 33 down 17% 100%
Kildwick SPS
Overflow on sewer network
Company site name
KILDWICK/CSO
EA ID / permit
YWS01970 · WRA8776
Outlet location
SE0134045770 (OS grid reference) · View on Apple Maps
WFD catchment
Aire (Eshton Beck to R Worth) (GB104027063033)
2024 spills / hours
44 / 242
Long-term average
26.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 33 hours spilling →
River Aire 8 33 down 82% 100%
Valley Crescent CSO
Overflow on sewer network
Company site name
VALLEY CRESCENT/CSO
EA ID / permit
YWS00620 · 2721
Outlet location
SK3899170440 (OS grid reference) · View on Apple Maps
WFD catchment
Spital/Calow/Muster Brook (GB104027057640)
2024 spills / hours
14 / 9.0
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 33 hours spilling →
Spital Brook Culverted 30 33 up 114% 100%
Featherstone Lane (North) SPS
Storm discharge at pumping station
Company site name
FEATHERSTONE LNE TANK/CSO
EA ID / permit
YWS00861 · C4935
Outlet location
SE4255021580 (OS grid reference) · View on Apple Maps
WFD catchment
Choke Churl Bk from Source to River Calder (GB104027062590)
2024 spills / hours
35 / 62
Long-term average
21.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 33 hours spilling →
Sewerbridge Beck 16 33 down 54% 99%
Handsworth Road No 2 CSO
Overflow on sewer network
Company site name
HANDSWORTH ROAD/NO 2 CSO
EA ID / permit
YWS01623 · WRA8159
Outlet location
SK3999787421 (OS grid reference) · View on Apple Maps
WFD catchment
Car Brook from Source to River Don (GB104027057360)
2024 spills / hours
32 / 40
Long-term average
38.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 33 hours spilling →
Car Brook 30 33 down 6% 98%
Ben Shaws CSO
Overflow on sewer network
Company site name
BEN SHAWS/CSO
EA ID / permit
YWS00069 · 1898
Outlet location
SE1520717533 (OS grid reference) · View on Apple Maps
WFD catchment
River Colne from River Holme to River Calder (GB104027062550)
2024 spills / hours
37 / 69
Long-term average
25.2 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Resolved - February after reporting year
Investigation
Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 32 hours spilling →
River Colne 18 32 down 51% 72%
Carr Pit Road CSO
Overflow on sewer network
Company site name
CARR PIT ROAD/NO 2 CSO
EA ID / permit
YWS01783 · WRA8455
Outlet location
SE1514716495 (OS grid reference) · View on Apple Maps
WFD catchment
River Colne from River Holme to River Calder (GB104027062550)
2024 spills / hours
9 / 20
Long-term average
7.5 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 32 hours spilling →
River Colne 10 32 up 11% 100%
Harrogate Hydro Csos
Overflow on sewer network
Company site name
JENNY PLAIN BRIDGE/CSO
EA ID / permit
YWS00256 · 27/21/0216
Outlet location
SE2968056430 (OS grid reference) · View on Apple Maps
WFD catchment
Oak Beck Catchment (Trib of Nidd) (GB104027063760)
2024 spills / hours
21 / 30
Long-term average
23.8 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Resolved - Jun
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation ongoing, Bathing Water and/or Shellfish Water investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 32 hours spilling →
Oak Beck and Coppice Beck 22 32 up 5% 79%
Gleadless Road CSO
Overflow on sewer network
Company site name
GLEADLESS ROAD/CSO
EA ID / permit
YWS02044 · WRA9148
Outlet location
SK3652584554 (OS grid reference) · View on Apple Maps
WFD catchment
River Sheaf from Source to River Porter (GB104027057750)
2024 spills / hours
28 / 44
Long-term average
34.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 32 hours spilling →
Tributary of Meers Brook 18 32 down 36% 100%
Great North Road Adwick CSO
Overflow on sewer network
Company site name
GREAT NORTH RD ADWICK/CSO
EA ID / permit
YWS00984 · EPRUP3223KQ
Outlet location
SE5404008936 (OS grid reference) · View on Apple Maps
WFD catchment
Ea Beck from the Skell to River Don (GB104027057591)
2024 spills / hours
21 / 155
Long-term average
6.7 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 32 hours spilling →
Mill Dike 16 32 down 24% 98%
Applehaigh View SPS
Storm discharge at pumping station
Company site name
APPLEHAIGH VIEW/CSO
EA ID / permit
YWS01161 · WADC12
Outlet location
SE3510011510 (OS grid reference) · View on Apple Maps
WFD catchment
Owler Beck from Source to River Calder (GB104027062530)
2024 spills / hours
5 / 23
Long-term average
4.0 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 32 hours spilling →
Bleakley Dyke 4 32 down 20% 100%
Tollerton Bridge CSO
Overflow on sewer network
Company site name
TOLLERTON BRIDGE/CSO
EA ID / permit
YWS01169 · WADC1262
Outlet location
SE5156764549 (OS grid reference) · View on Apple Maps
WFD catchment
Kyle from Derrings Beck to New Parks Beck (GB104027063860)
2024 spills / hours
17 / 52
Long-term average
11.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 32 hours spilling →
Sidings Drain 11 32 down 35% 98%
Longley Hall No. 2 CSO
Overflow on sewer network
Company site name
LONGLEY HALL/NO 2 CSO
EA ID / permit
YWS01625 · WRA8161
Outlet location
SK3600791197 (OS grid reference) · View on Apple Maps
WFD catchment
Don from River Loxley confl to River Don Works (GB104027057412)
2024 spills / hours
19 / 38
Long-term average
15.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 32 hours spilling →
Bagley Dike 19 32 no change 100%
Permit applied for
Overflow on sewer network
Company site name
THORNE WEST STREET/CSO
EA ID / permit
YWS02285 · Permit applied for
Outlet location
SE6877712564 (OS grid reference) · View on Apple Maps
WFD catchment
North Soak Drain Catchment (trib of Torne/Three Rivers) (GB104028064350)
2024 spills / hours
23 / 32
Long-term average
29.0 spills a year (monitored since 2023)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 32 hours spilling →
Permit applied for 20 32 down 13% 100%
High Greave No 2 CSO
Overflow on sewer network
Company site name
HIGH GREAVE/NO 2 CSO
EA ID / permit
YWS00738 · 361
Outlet location
SK3626093252 (OS grid reference) · View on Apple Maps
WFD catchment
Blackburn Brook from Source to River Don (GB104027057440)
2024 spills / hours
16 / 37
Long-term average
10.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 32 hours spilling →
Hartley Brook Dike 14 32 down 13% 100%
Farrer Lane CSO
Overflow on sewer network
Company site name
FARRER LANE/CSO
EA ID / permit
YWS00780 · 3849
Outlet location
SE3647028100 (OS grid reference) · View on Apple Maps
WFD catchment
Oulton Beck from Source to River Aire (GB104027062680)
2024 spills / hours
16 / 24
Long-term average
13.8 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Resolved - Dec
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 32 hours spilling →
Oulton Beck 11 32 down 31% 84%
Lidgett Park Road CSO
Overflow on sewer network
Company site name
LIDGETT PARK ROAD/CSO
EA ID / permit
YWS01558 · WRA8059
Outlet location
SE3253438030 (OS grid reference) · View on Apple Maps
WFD catchment
Wyke Beck from Source to River Aire (GB104027062880)
2024 spills / hours
64 / 95
Long-term average
74.8 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 31 hours spilling →
A Tributary of Wyke Beck 22 31 down 66% 100%
Bingley Road CSO
Overflow on sewer network
Company site name
BINGLEY ROAD/CSO
EA ID / permit
YWS01090 · WA6005
Outlet location
SE0719237243 (OS grid reference) · View on Apple Maps
WFD catchment
Harden Beck from Source to River Aire (GB104027062870)
2024 spills / hours
14 / 53
Long-term average
15.3 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 31 hours spilling →
Cow House Beck 9 31 down 36% 100%
Station Lane CSO
Overflow on sewer network
Company site name
STATION LANE W17/NO 2 CSO
EA ID / permit
YWS01619 · WRA8155
Outlet location
SK3080093370 (OS grid reference) · View on Apple Maps
WFD catchment
Don from Little Don to River Loxley confluence (GB104027057411)
2024 spills / hours
15 / 38
Long-term average
19.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 31 hours spilling →
River Don 12 31 down 20% 100%
Ecclesall Road CSO
Overflow on sewer network
Company site name
ECCLESALL ROAD/CSO
EA ID / permit
YWS00746 · 3675
Outlet location
SK3446586256 (OS grid reference) · View on Apple Maps
WFD catchment
River Porter from Source to River Sheaf (GB104027057760)
2024 spills / hours
7 / 8.0
Long-term average
19.8 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 31 hours spilling →
River Porter 25 31 up 257% 97%
Milns Shaw Lane No 2 CSO
Overflow on sewer network
Company site name
MILNS SHAW LANE/NO 2 CSO
EA ID / permit
YWS01964 · WRA8765
Outlet location
SE1168215808 (OS grid reference) · View on Apple Maps
WFD catchment
River Colne from Wessenden Brook to R Holme (GB104027063330)
2024 spills / hours
16 / 21
Long-term average
22.7 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 31 hours spilling →
Tributary of the River Colne 20 31 up 25% 100%
Golf Course CSO
Overflow on sewer network
Company site name
BROUGH GOLF COURSE/CSO
EA ID / permit
YWS02206 · YWUCD2/13
Outlet location
SE9398427402 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
0 / 0.0
Long-term average
19.8 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 31 hours spilling →
Golf Links Beck 24 31 up from 0 100%
Haigh Hall CSO
Overflow on sewer network
Company site name
HAIGH HALL/CSO
EA ID / permit
YWS00672 · 3152
Outlet location
SE2814523684 (OS grid reference) · View on Apple Maps
WFD catchment
River Chald from Source to River Calder (GB104027062620)
2024 spills / hours
13 / 23
Long-term average
13.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 31 hours spilling →
Hey Beck 14 31 up 8% 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.