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
Darton Church Street CSO
Overflow on sewer network
Company site name
DARTON CHURCH ST/NO 2 CSO
EA ID / permit
YWS01883 · WRA8610
Outlet location
SE3131710026 (OS grid reference) · View on Apple Maps
WFD catchment
Dearne from Bentley Brook to Cawthorne Dyke (GB104027063260)
2024 spills / hours
42 / 69
Long-term average
40.7 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 62 hours spilling →
River Dearne 26 62 down 38% 100%
Bramston Street CSO
Overflow on sewer network
Company site name
BRAMSTON STREET/CSO
EA ID / permit
YWS00952 · EPRFB3895WE
Outlet location
SE1448822546 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from Ryburn Confluence to River Colne (GB104027062642)
2024 spills / hours
35 / 54
Long-term average
50.0 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Monitor below 90%
Comms failure / issue · Resolved - Sep
Investigation
Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 62 hours spilling →
River Calder 34 62 down 3% 65%
Harrogate Hydro Csos
Overflow on sewer network
Company site name
HOTEL MAJESTIC/CSO
EA ID / permit
YWS00260 · 27/21/0216
Outlet location
SE3007055660 (OS grid reference) · View on Apple Maps
WFD catchment
Oak Beck Catchment (Trib of Nidd) (GB104027063760)
2024 spills / hours
31 / 85
Long-term average
12.7 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed, Bathing Water and/or Shellfish Water investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 62 hours spilling →
Oak Beck and Coppice Beck 27 62 down 13% 100%
Catterick Bridge SPS
Storm discharge at pumping station
Company site name
CATTERICK BRIDGE/CSO
EA ID / permit
YWS00326 · 27/23/0093
Outlet location
SE2295599455 (OS grid reference) · View on Apple Maps
WFD catchment
Swale from Clapgate Beck to Bedale Beck (GB104027069122)
2024 spills / hours
32 / 90
Long-term average
34.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 62 hours spilling →
River Swale 23 62 down 28% 100%
Woodhall Way
Overflow on sewer network
Company site name
BURNEY CLOSE/CSO
EA ID / permit
YWS00765 · 3793(SS)
Outlet location
TA0295040550 (OS grid reference) · View on Apple Maps
WFD catchment
Beverley and Barmston Drain (GB104026067211)
2024 spills / hours
15 / 132
Long-term average
9.0 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 62 hours spilling →
Un-Named Trib of Sister Beck 7 62 down 53% 97%
Skirlaugh CSO
Overflow on sewer network
Company site name
SKIRLAUGH CHURCH LANE/CSO
EA ID / permit
YWS01299 · WADC826
Outlet location
TA1421939766 (OS grid reference) · View on Apple Maps
WFD catchment
Lambwath Stream from Source to Foredyke Stream (GB104026066860)
2024 spills / hours
20 / 53
Long-term average
17.3 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 62 hours spilling →
Lambwath Stream 13 62 down 35% 100%
Bulls Head CSO
Overflow on sewer network
Company site name
BULLS HEAD/CSO
EA ID / permit
YWS02111 · WRA9218
Outlet location
SK3399069290 (OS grid reference) · View on Apple Maps
WFD catchment
Hipper from Source to River Rother (GB104027057660)
2024 spills / hours
18 / 22
Long-term average
29.8 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 62 hours spilling →
River Hipper 25 62 up 39% 100%
East Bierley NO2 CSO
Overflow on sewer network
Company site name
EAST BIERLEY/NO 2 CSO
EA ID / permit
YWS00030 · 1503
Outlet location
SE2015028730 (OS grid reference) · View on Apple Maps
WFD catchment
Spen Beck from Source to River Calder (GB104027062710)
2024 spills / hours
30 / 59
Long-term average
27.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 61 hours spilling →
Lodge Beck 28 61 down 7% 100%
Great Crakehall SPS
Storm discharge at pumping station
Company site name
GREAT CRAKEHALL/CSO
EA ID / permit
YWS00332 · 27/23/0128
Outlet location
SE2453090170 (OS grid reference) · View on Apple Maps
WFD catchment
Bedale/Newton/Burton Bk - Brompton Bk to Scurf Bk (GB104027068920)
2024 spills / hours
23 / 79
Long-term average
17.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 61 hours spilling →
Bedale Beck 17 61 down 26% 100%
Rushdale Road CSO
Overflow on sewer network
Company site name
RUSHDALE ROAD/CSO
EA ID / permit
YWS01392 · WRA7406
Outlet location
SK3573484492 (OS grid reference) · View on Apple Maps
WFD catchment
River Sheaf from Source to River Porter (GB104027057750)
2024 spills / hours
43 / 76
Long-term average
41.8 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 61 hours spilling →
Meers Brook Culverted 32 61 down 26% 98%
Addingham No.1 Storm Tanks
Storm discharge at pumping station
Company site name
ADDINGHAM/NO 1 SPS/PRELIMINARY TREATMENT-STW/6XDWF OVERFLOW
EA ID / permit
YWS00145 · 2482
Outlet location
SE0900049000 (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
23 / 43
Long-term average
47.7 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 61 hours spilling →
River Wharfe 28 61 up 22% 100%
Keresforth Road CSO
Overflow on sewer network
Company site name
KERESFORTH ROAD/2 CSO
EA ID / permit
YWS01369 · WRA7254
Outlet location
SE3230204893 (OS grid reference) · View on Apple Maps
WFD catchment
Dodworth Dyke from Source to River Dove (GB104027057520)
2024 spills / hours
26 / 61
Long-term average
23.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 61 hours spilling →
Clvrt Trib of Dodworth Dyke 21 61 down 19% 100%
Darnall Road CSO
Overflow on sewer network
Company site name
DARNALL ROAD/CSO
EA ID / permit
YWS00090 · 2171
Outlet location
SK3813488975 (OS grid reference) · View on Apple Maps
WFD catchment
Don from River Loxley confl to River Don Works (GB104027057412)
2024 spills / hours
27 / 56
Long-term average
25.7 spills a year (monitored since 2020)
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 61 hours spilling →
Kirkbridge Dike 20 61 down 26% 42%
Factory Lane CSO
Overflow on sewer network
Company site name
FACTORY LANE/CSO
EA ID / permit
YWS02074 · WRA9180
Outlet location
SE1202815862 (OS grid reference) · View on Apple Maps
WFD catchment
River Colne from Wessenden Brook to R Holme (GB104027063330)
2024 spills / hours
32 / 62
Long-term average
43.8 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Resolved - Nov
Investigation
Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 61 hours spilling →
Tributary of the River Colne 23 61 down 28% 88%
Roundhay 109 No 2 CSO
Overflow on sewer network
Company site name
ROUNDHAY 109/NO 2 CSO
EA ID / permit
YWS01530 · WRA7975
Outlet location
SE3264338035 (OS grid reference) · View on Apple Maps
WFD catchment
Wyke Beck from Source to River Aire (GB104027062880)
2024 spills / hours
51 / 79
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 61 hours spilling →
Culverted Trib of Wyke Beck 38 61 down 25% 100%
Permit applied for
Overflow on sewer network
Company site name
RAWDON AVENUE/CSO
EA ID / permit
YWS02287 · Permit applied for
Outlet location
SE6166351669 (OS grid reference) · View on Apple Maps
WFD catchment
Tang Hall Bk/Old Foss Bk catch, trib of River Foss (GB104027063500)
2024 spills / hours
25 / 146
Long-term average
24.3 spills a year (monitored since 2023)
Monitor below 90%
Sensor failure / issue · Resolved - Aug
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 61 hours spilling →
Permit applied for 17 61 down 32% 35%
Yws Unknown Sites Default
Overflow on sewer network
Company site name
LODGE LANE/CSO
EA ID / permit
YWS00098 · 2218
Outlet location
SE3708096260 (OS grid reference) · View on Apple Maps
WFD catchment
Willow Beck Catchment (trib of Wiske) (GB104027069540)
2024 spills / hours
44 / 132
Long-term average
31.3 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 60 hours spilling →
Trib Wiske/Swale 27 60 down 39% 100%
Shay Lane Sewage Pumping Station
Storm discharge at pumping station
Company site name
SHAY LANE/CSO
EA ID / permit
YWS01454 · WRA7660
Outlet location
SE3594017630 (OS grid reference) · View on Apple Maps
WFD catchment
Oakenshaw Beck from Source to River Calder (GB104027062560)
2024 spills / hours
8 / 14
Long-term average
12.7 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 60 hours spilling →
Drain Beck 9 60 up 13% 100%
Burniston Gardens CSO
Overflow on sewer network
Company site name
BURNISTON GARDENS/2 CSO
EA ID / permit
YWS01049 · QR.27/26/0003
Outlet location
TA0156092570 (OS grid reference) · View on Apple Maps
WFD catchment
Burniston Beck/Sea Cut/Scalby Beck Catch to N Sea (GB104027067980)
Bathing water
Scarborough North Bay
2024 spills / hours
26 / 100
Long-term average
19.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 60 hours spilling →
Burniston Beck 21 60 down 19% 100%
Broadway Station CSO
Storm discharge at pumping station
Company site name
BROADWAY 62/CSO
EA ID / permit
YWS00944 · EPREP3225GG
Outlet location
SE6499012610 (OS grid reference) · View on Apple Maps
WFD catchment
Don from Mill Dyke to River Ouse (GB104027064243)
2024 spills / hours
30 / 57
Long-term average
38.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 60 hours spilling →
River Don 30 60 no change 100%
Warren Lane Sheffield CSO
Overflow on sewer network
Company site name
WARREN LN SHEFFIELD/CSO
EA ID / permit
YWS02118 · WRA9226
Outlet location
SK3605097410 (OS grid reference) · View on Apple Maps
WFD catchment
Greasbrough Dike from Source to River Don (GB104027057420)
2024 spills / hours
30 / 59
Long-term average
19.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 60 hours spilling →
Tributary of Blackburn Brook 30 60 no change 100%
Temple Avenue CSO
Overflow on sewer network
Company site name
TEMPLE AVENUE/CSO
EA ID / permit
YWS00059 · 1855
Outlet location
SE3506032680 (OS grid reference) · View on Apple Maps
WFD catchment
Wyke Beck from Source to River Aire (GB104027062880)
2024 spills / hours
29 / 48
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 60 hours spilling →
Trib of Wyke Beck 25 60 down 14% 100%
Waterside 47 CSO
Overflow on sewer network
Company site name
WATERSIDE 47/CSO
EA ID / permit
YWS00273 · 27/21/0259
Outlet location
SE3474156787 (OS grid reference) · View on Apple Maps
WFD catchment
Nidd from Oak Beck to Low Bridge on Briggate (Knaresborough) (GB104027068297)
Bathing water
Nidd at the Lido, Knaresborough
2024 spills / hours
23 / 46
Long-term average
21.3 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 60 hours spilling →
Mill Stream 28 60 up 22% 92%
Church Wood CSO
Overflow on sewer network
Company site name
CHURCH WOOD/CSO
EA ID / permit
YWS01181 · WADC1337
Outlet location
SE3600868039 (OS grid reference) · View on Apple Maps
WFD catchment
Ure from River Skell to River Tutt (GB104027064161)
2024 spills / hours
37 / 164
Long-term average
24.3 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 60 hours spilling →
Culverted Scour Gutter 31 60 down 16% 100%
Morris Lane CSO
Overflow on sewer network
Company site name
MORRIS LANE/CSO
EA ID / permit
YWS01834 · WRA8535
Outlet location
SE2600035560 (OS grid reference) · View on Apple Maps
WFD catchment
Aire from Gill Beck (Baildon) to Wyke Beck (GB104027063035)
2024 spills / hours
73 / 366
Long-term average
18.7 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 60 hours spilling →
Culverted Trib of River Aire 37 60 down 49% 100%
Shorpeth Way SPS
Storm discharge at pumping station
Company site name
SHOPETH WAY/CSO
EA ID / permit
YWS01261 · WADC472
Outlet location
TA0581037980 (OS grid reference) · View on Apple Maps
WFD catchment
Beverley and Barmston Drain (GB104026067211)
2024 spills / hours
20 / 203
Long-term average
14.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 60 hours spilling →
Surface Water Sewer 4 60 down 80% 99%
Sewage Pumping Station Low Hall
Storm discharge at pumping station
Company site name
HUNTON LOWHALL/CSO
EA ID / permit
YWS01103 · WA6340
Outlet location
SE1913092050 (OS grid reference) · View on Apple Maps
WFD catchment
Brompton Bk from Source to Newton Bk (GB104027068960)
2024 spills / hours
16 / 148
Long-term average
12.2 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 59 hours spilling →
Hunton Beck 9 59 down 44% 100%
Hill View Road No 2 CSO
Overflow on sewer network
Company site name
HILL VIEW ROAD/NO 2 CSO
EA ID / permit
YWS01504 · WRA7948
Outlet location
SK3942473308 (OS grid reference) · View on Apple Maps
WFD catchment
Rother, Spittal Brook to Doe Lea (GB104027057771)
2024 spills / hours
42 / 109
Long-term average
40.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 59 hours spilling →
Trib of Tinker Sick 20 59 down 52% 100%
Flat Cliffs Sewage Pumping Station
Storm discharge at pumping station
Company site name
FLATCLIFFS/CSO
EA ID / permit
YWS00526 · 27/27/0097
Outlet location
TA1245078210 (OS grid reference) · View on Apple Maps
WFD catchment
Yorkshire North (GB650401500004)
Bathing water
Reighton
2024 spills / hours
18 / 109
Long-term average
13.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 59 hours spilling →
The North Sea 10 59 down 44% 100%
West Vale
Storm discharge at pumping station
Company site name
ELLAND WEST VALE/SPS
EA ID / permit
YWS00668 · 3112
Outlet location
SE1000821129 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from Ryburn Confluence to River Colne (GB104027062642)
2024 spills / hours
30 / 82
Long-term average
38.8 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation completed, UWWTR investigation completed, Operational investigation ongoing
Improvement
Operational improvement ongoing
Volume & pollution
Estimate from 59 hours spilling →
River Calder 21 59 down 30% 100%
Clayton Street South CSO
Overflow on sewer network
Company site name
CLAYTON STREET/NO 2 CSO
EA ID / permit
YWS01818 · WRA8512
Outlet location
SK3885070760 (OS grid reference) · View on Apple Maps
WFD catchment
Rother, Spittal Brook to Doe Lea (GB104027057771)
2024 spills / hours
1 / 8.8
Long-term average
1.8 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 59 hours spilling →
River Rother 5 59 up 400% 100%
Shuttlewood CSO
Overflow on sewer network
Company site name
SHUTTLEWOOD/NO 2 CSO
EA ID / permit
YWS01551 · WRA8001
Outlet location
SK4708073610 (OS grid reference) · View on Apple Maps
WFD catchment
Hawke Brook from Source to Doe Lea (GB104027057320)
2024 spills / hours
26 / 49
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 58 hours spilling →
Hawke Brook 20 58 down 23% 95%
Permit applied for
Overflow on sewer network
Company site name
GARFORTH TANKS/CSO
EA ID / permit
YWS02254 · Permit applied for
Outlet location
SE39803206 (OS grid reference) · View on Apple Maps
WFD catchment
Lin Dike from Source to River Aire (GB104027062810)
2024 spills / hours
14 / 22
Long-term average
11.3 spills a year (monitored since 2023)
Investigation
Operational investigation ongoing
Improvement
Operational improvement ongoing
Volume & pollution
Estimate from 58 hours spilling →
Permit applied for 18 58 up 29% 100%
Low Lane CSO
Overflow on sewer network
Company site name
LOW LANE/CSO
EA ID / permit
YWS00882 · C5413
Outlet location
SE2522038050 (OS grid reference) · View on Apple Maps
WFD catchment
Carlton Beck from Source to River Aire (GB104027062920)
2024 spills / hours
23 / 38
Long-term average
9.5 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 58 hours spilling →
Oil Mill Beck 34 58 up 48% 100%
Wheelgate CSO
Overflow on sewer network
Company site name
WHEELGATE/CSO
EA ID / permit
YWS00536 · 27/27/0133
Outlet location
SE7873471477 (OS grid reference) · View on Apple Maps
WFD catchment
Derwent from River Rye to Kirkham (GB104027068313)
2024 spills / hours
48 / 54
Long-term average
61.0 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 57 hours spilling →
River Derwent 46 57 down 4% 100%
O/S 53 Station Road
Overflow on sewer network
Company site name
PANNAL BRIDGE/CSO
EA ID / permit
YWS00767 · 3803(SS)
Outlet location
SE3060051600 (OS grid reference) · View on Apple Maps
WFD catchment
Crimple Beck from Source to Park Beck (GB104027063741)
2024 spills / hours
30 / 113
Long-term average
33.7 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 57 hours spilling →
River Crimple via Sewer 21 57 down 30% 100%
Not matched in Ea Consents Database
Overflow on sewer network
Company site name
SCOUTHILL R D/CSO
EA ID / permit
YWS00648 · EPR/SB3590EA
Outlet location
SE2404020959 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from River Colne to River Chald (GB104027062631)
2024 spills / hours
13 / 24
Long-term average
12.3 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 56 hours spilling →
Not matched in Ea Consents Database 11 56 down 15% 100%
Castleton Sewage Pumping Station
Storm discharge at pumping station
Company site name
CASTLETON/SPS
EA ID / permit
YWS00591 · 27/29/0062
Outlet location
NZ6912008033 (OS grid reference) · View on Apple Maps
WFD catchment
Danby Beck catchment (trib of Esk) (GB104027068110)
2024 spills / hours
49 / 207
Long-term average
50.5 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 55 hours spilling →
Danby Beck 18 55 down 63% 100%
Bailiff Bridge CSO
Overflow on sewer network
Company site name
SYKE LANE/CSO
EA ID / permit
YWS00897 · E2
Outlet location
SE1326326076 (OS grid reference) · View on Apple Maps
WFD catchment
Clifton Beck from Source to River Calder (GB104027062700)
2024 spills / hours
45 / 79
Long-term average
104.0 spills a year (monitored since 2020)
High-spill reason (company)
Not asset maintenance - hydraulic capacity
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed
Improvement
UWWTR improvement completed, Operational improvement ongoing
Volume & pollution
Estimate from 55 hours spilling →
Wyke Beck 32 55 down 29% 100%
Grassington Sewage Treatment Works
Inlet overflow at sewage works
Sewage works
Grassington
Company site name
GRASSINGTON/STW
EA ID / permit
YWS00185 · 27/19/0075
Outlet location
SE0063962941 (OS grid reference) · View on Apple Maps
WFD catchment
Wharfe from Park Gill Bk to Barben Beck/River Dibb (GB104027064253)
Bathing water
Wharfe at Cromwheel, Ilkley
2024 spills / hours
36 / 55
Long-term average
62.5 spills a year (monitored since 2020)
Investigation
UWWTR investigation completed, Operational investigation completed, Bathing Water and/or Shellfish Water investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 55 hours spilling →
River Wharfe 29 55 down 19% 100%
Clifton Park CSO
Overflow on sewer network
Company site name
CLIFTON PARK/CSO
EA ID / permit
YWS00829 · C4074
Outlet location
SK4310693708 (OS grid reference) · View on Apple Maps
WFD catchment
Don from Greasborough Dyke to River Dearne (GB104027057452)
2024 spills / hours
31 / 60
Long-term average
41.5 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 55 hours spilling →
Tributary of the River Don 24 55 down 23% 98%
Birley Vale Combined Sewer Overflow
Overflow on sewer network
Company site name
BIRLEY MANSFIELD RD/CSO
EA ID / permit
YWS01398 · WRA7419
Outlet location
SK3943084260 (OS grid reference) · View on Apple Maps
WFD catchment
Shire Brook (GB104027057773)
2024 spills / hours
36 / 121
Long-term average
35.5 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 55 hours spilling →
Shire Brook 20 55 down 44% 100%
Crake Wells CSO
Overflow on sewer network
Company site name
CRAKE WELLS/CSO
EA ID / permit
YWS01477 · WRA7810
Outlet location
TA0034337190 (OS grid reference) · View on Apple Maps
WFD catchment
High Hunsley to Woodmansey Area (GB104026066820)
2024 spills / hours
26 / 47
Long-term average
15.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 55 hours spilling →
Autherd Drain 23 55 down 12% 100%
Little London Road CSO
Overflow on sewer network
Company site name
LITTLE LONDON ROAD/CSO
EA ID / permit
YWS02092 · WRA9198
Outlet location
SK3446084010 (OS grid reference) · View on Apple Maps
WFD catchment
River Sheaf from Source to River Porter (GB104027057750)
2024 spills / hours
30 / 39
Long-term average
25.5 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 55 hours spilling →
River Sheaf 32 55 up 7% 97%
Knavesmire CSO
Overflow on sewer network
Company site name
KNAVESMIRE/CSO
EA ID / permit
YWS01141 · WADC1065
Outlet location
SE5923450631 (OS grid reference) · View on Apple Maps
WFD catchment
Ouse from River Nidd to Stillingfleet Beck (GB104027069593)
2024 spills / hours
30 / 302
Long-term average
30.0 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 55 hours spilling →
Culverted Knavesmire Beck 11 55 down 63% 100%
Cridling Stubbs WwTW
Storm tank at sewage works
Sewage works
Cridling Stubbs
Company site name
CRIDLING STUBBS/STW
EA ID / permit
YWS00014 · 1158
Outlet location
SE5221021300 (OS grid reference) · View on Apple Maps
WFD catchment
Womersley Beck from Source to Blowell Drain (GB104027063370)
2024 spills / hours
47 / 443
Long-term average
30.2 spills a year (monitored since 2020)
Investigation
UWWTR investigation ongoing, Operational investigation completed
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 55 hours spilling →
Blowell Drain 8 55 down 83% 100%
Mount Pellon CSO
Overflow on sewer network
Company site name
MOUNT PELLON/CSO
EA ID / permit
YWS01567 · WRA8083
Outlet location
SE0794826134 (OS grid reference) · View on Apple Maps
WFD catchment
Hebble Brook from Source to River Calder (GB104027062780)
2024 spills / hours
57 / 72
Long-term average
70.7 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 55 hours spilling →
Hebble Brook Culverted 60 55 up 5% 100%
Bonegate Lane CSO
Overflow on sewer network
Company site name
ALEGER STREET/CSO
EA ID / permit
YWS01768 · WRA8439
Outlet location
SE1509022520 (OS grid reference) · View on Apple Maps
WFD catchment
Calder from Ryburn Confluence to River Colne (GB104027062642)
2024 spills / hours
38 / 85
Long-term average
108.2 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 54 hours spilling →
River Calder 27 54 down 29% 100%
Bacon Lane CSO
Overflow on sewer network
Company site name
BACON LANE/CSO
EA ID / permit
YWS00860 · C4919
Outlet location
SK3729088260 (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
28.2 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 54 hours spilling →
River Don 34 54 up 79% 100%
Permit applied for
Storm discharge at pumping station
Company site name
LINKFIELD/NO 2 SPS
EA ID / permit
YWS02294 · Permit applied for
Outlet location
TA1183578563 (OS grid reference) · View on Apple Maps
WFD catchment
Not part of a WFD catchment
2024 spills / hours
21 / 132
Long-term average
16.5 spills a year (monitored since 2024)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 54 hours spilling →
Permit applied for 12 54 down 43% 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.