Storm overflow register · 2025 annual return

United Utilities storm overflows, 2025

United Utilities reported 2,270 storm overflows in England for 2025. Together they recorded 60,843 spills over 327,452 hours, an average of 26.8 spills per overflow against 20.4 across England. That ranks 9 of 10 companies, where 1 is the fewest spills per overflow. Counting the same overflows in both years, spills were down 23% on 2024.

295 overflows did not spill · 313 spilled more than 60 times · 2,076 had monitors working for 90% of the year or more · 289 sewage treatment works with overflows

Hours spilling by month, 2025

025k50k75k100kJan 2025: 69,814 hours spillingJanFeb 2025: 7,561 hours spillingFebMar 2025: 1,763 hours spillingMarApr 2025: 484 hours spillingAprMay 2025: 4,089 hours spillingMayJun 2025: 13,148 hours spillingJunJul 2025: 6,622 hours spillingJulAug 2025: 2,053 hours spillingAugSep 2025: 41,625 hours spillingSepOct 2025: 22,376 hours spillingOctNov 2025: 71,264 hours spillingNovDec 2025: 86,587 hours spillingDec
Hours spilling, all United Utilities overflows, from the start/stop records. Spills running across a month end are split between the months.

All United Utilities 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
Settlebeck Sedbergh CSO
Overflow on sewer network
Company site name
Settlebeck (Sedbergh) Combined Sewer Overflow
EA ID / permit
UUP01738 · 01LAK0014
Outlet location
SD6639091910 (OS grid reference) · View on Apple Maps
WFD catchment
Rawthey - Lower (GB112072071710)
2024 spills / hours
4 / 0.6
Long-term average
2.0 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.1 hours spilling →
River Rawthey 1 0.1 down 75% 100%
Whalley New Road CSO
Overflow on sewer network
EA ID / permit
UUP02098 · 01BBN0014
Outlet location
SD6895029070 (OS grid reference) · View on Apple Maps
WFD catchment
Blakewater (GB112071065310)
2024 spills / hours
0 / 0.0
Long-term average
3.8 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.1 hours spilling →
River Blakewater 2 0.1 up from 0 100%
Lattings Close CSO 028NF
Overflow on sewer network
Company site name
Lattrigg Close
EA ID / permit
UUP01117 · 017580252
Outlet location
NY2758023890 (OS grid reference) · View on Apple Maps
WFD catchment
Derwent US Bassenthwaite Lake (GB112075073561)
2024 spills / hours
4 / 1.2
Long-term average
7.0 spills a year (monitored since 2018)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.1 hours spilling →
River Greta 1 0.1 down 75% 100%
Dexter Rd Heaton Park Rd CSO
Overflow on sewer network
Company site name
Dexter Road/Heaton Park Road CSO
EA ID / permit
UUP00637 · 016993739
Outlet location
SD8415004470 (OS grid reference) · View on Apple Maps
WFD catchment
Irk (Wince to Irwell) (GB112069061131)
2024 spills / hours
1 / 0.1
Long-term average
9.1 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.1 hours spilling →
River Irk 1 0.1 no change 100%
Port Causeway/Crossway CSO
Overflow on sewer network
Company site name
Port Causeway/Crossway CSO
EA ID / permit
UUP01564 · 016881733
Outlet location
SJ3441083751 (OS grid reference) · View on Apple Maps
WFD catchment
Dibbinsdale Brook and Clatter Brook (GB112068060270)
Bathing water
Wallasey
2024 spills / hours
7 / 0.7
Long-term average
12.1 spills a year (monitored since 2017)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.1 hours spilling →
Bromborough Pool 2 0.1 down 71% 99%
Batemill Road CSO
Overflow on sewer network
EA ID / permit
UUP00202 · 01PEA0044
Outlet location
SK0094086910 (OS grid reference) · View on Apple Maps
WFD catchment
Sett (GB112069060970)
2024 spills / hours
0 / 0.0
Long-term average
0.2 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.1 hours spilling →
River Sett 1 0.1 up from 0 96%
Nw Jct Woodhouse Lane
Overflow on sewer network
Company site name
NW Junction Woodhouse Lane CSO
EA ID / permit
UUP01419 · 017091491
Outlet location
SD5622006750 (OS grid reference) · View on Apple Maps
WFD catchment
Douglas - Lower (GB112070064820)
2024 spills / hours
0 / 0.0
Long-term average
0.5 spills a year (monitored since 2024)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.1 hours spilling →
The River Douglas 1 0.1 up from 0 100%
Westmoorland Street/Scholes CSO
Overflow on sewer network
Company site name
WESTMOORLAND STREET / SCHOLES CSO
EA ID / permit
UUP02091 · 01WIG0017
Outlet location
SD5952006050 (OS grid reference) · View on Apple Maps
WFD catchment
Douglas - Mid (GB112070064780)
2024 spills / hours
0 / 0.0
Long-term average
0.5 spills a year (monitored since 2024)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.1 hours spilling →
Clarington Brook 1 0.1 up from 0 97%
Blackburn Rd Halliwell Rd CSO 071EU
Overflow on sewer network
Company site name
Blackburn Road/Halliwell Road CSO
EA ID / permit
UUP00249 · 01BOL0086
Outlet location
SD7163010290 (OS grid reference) · View on Apple Maps
WFD catchment
Tonge (GB112069064530)
2024 spills / hours
0 / 0.0
Long-term average
0.7 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.1 hours spilling →
River Tonge 1 0.1 up from 0 100%
Greenbank Road/Rossall Road CSO
Overflow on sewer network
Company site name
Greenbank Road
EA ID / permit
UUP00850 · EPRQB3593VE
Outlet location
SD8998014560 (OS grid reference) · View on Apple Maps
WFD catchment
Roch (Source to Spodden) (GB112069064720)
2024 spills / hours
0 / 0.0
Long-term average
0.7 spills a year (monitored since 2018)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.1 hours spilling →
Culverted Section of Foxholes Brook 1 0.1 up from 0 100%
28/29 Arlecdon Parks Road CSO
Overflow on sewer network
Company site name
Arlecdon Parks Road CSO to Winder Beck
EA ID / permit
UUP00028 · 01COP0017
Outlet location
NY0514018660 (OS grid reference) · View on Apple Maps
WFD catchment
Ehen (upper including Liza) (GB112074070010)
2024 spills / hours
1 / 0.9
Long-term average
1.0 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.1 hours spilling →
Trib of Winder Beck 1 0.1 no change 100%
Crab St/Duke St
Overflow on sewer network
Company site name
Cooper Street
EA ID / permit
UUP00555 · 01STH0073
Outlet location
SJ5072395573 (OS grid reference) · View on Apple Maps
WFD catchment
Hardshaw (Windle) Brook (GB112069061210)
2024 spills / hours
1 / 0.3
Long-term average
1.0 spills a year (monitored since 2024)
Monitor below 90%
Sensor failure / issue · Resolved - Dec
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.1 hours spilling →
Hardshaw Brook 1 0.1 no change 86%
Hawthorn Avenue/Railway Bridge CSO
Overflow on sewer network
Company site name
Hawthorn Avenue/Railway Bridge CSO
EA ID / permit
UUP00920 · 017570201
Outlet location
NY0431036400 (OS grid reference) · View on Apple Maps
WFD catchment
Ellen (lower) (GB112075073640)
Bathing water
Allonby
2024 spills / hours
0 / 0.0
Long-term average
1.2 spills a year (monitored since 2017)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.1 hours spilling →
Gill Beck 1 0.1 up from 0 100%
Beech Bridge South CSO
Overflow on sewer network
EA ID / permit
UUP00209 · 01MAC0126
Outlet location
SJ9149074550 (OS grid reference) · View on Apple Maps
WFD catchment
Bollin (Source to Dean) (GB112069061320)
2024 spills / hours
2 / 7.0
Long-term average
1.5 spills a year (monitored since 2024)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.1 hours spilling →
River Bollin 1 0.1 down 50% 100%
Verdon Street/Scotland CSO
Overflow on sewer network
Company site name
Verdon Street/Scotland Combined Sewer Overflow
EA ID / permit
UUP01990 · 016982715
Outlet location
SJ8412099170 (OS grid reference) · View on Apple Maps
WFD catchment
Irk (Wince to Irwell) (GB112069061131)
2024 spills / hours
2 / 0.3
Long-term average
1.5 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.1 hours spilling →
River Irk 1 0.1 down 50% 91%
Mornington Rd Back Lincoln Rd CSO
Overflow on sewer network
Company site name
Mornington Road/Back Lincoln Road CSO
EA ID / permit
UUP01343 · 01BOL0117
Outlet location
SD7020709371 (OS grid reference) · View on Apple Maps
WFD catchment
Middle Brook (GB112069064540)
2024 spills / hours
5 / 1.3
Long-term average
4.8 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.1 hours spilling →
Queens Park Gilnow Park Pond 1 0.1 down 80% 97%
Chorlton Street CSO 281J2
Overflow on sewer network
Company site name
CHORLTON STREET CSO
EA ID / permit
UUP00476 · 01MAN0162
Outlet location
SJ8451097820 (OS grid reference) · View on Apple Maps
WFD catchment
Medlock (Lumb Brook to Irwell) (GB112069061152)
2024 spills / hours
1 / 0.1
Long-term average
5.7 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.1 hours spilling →
Shooters Brook Trib Rvr Medloc 1 0.1 no change 100%
Romney Road/Titchfield Street CSO
Overflow on sewer network
Company site name
Romney Road/Titchfield Street CSO
EA ID / permit
UUP01683 · 017480303
Outlet location
SD1966070554 (OS grid reference) · View on Apple Maps
WFD catchment
Furness Permo-Triassic sandstone aquifers (GB41201G101900)
Bathing water
Walney West Shore
Shellfish water
Walney
2024 spills / hours
12 / 97
Long-term average
9.9 spills a year (monitored since 2018)
Investigation
Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 0.1 hours spilling →
Ormsgill Reservoir 1 0.1 down 92% 94%
West Kirby Pumping Station
Storm discharge at pumping station
Company site name
West Kirkby Pumping Station (Site ID 51001) (WIR0092)
EA ID / permit
UUP00851 · 016892350
Outlet location
SJ2178087720 (OS grid reference) · View on Apple Maps
WFD catchment
The Birket including Arrowe Brook and Fender (GB112069064720)
Bathing water
Wallasey
2024 spills / hours
4 / 0.2
Long-term average
2.0 spills a year (monitored since 2017)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.1 hours spilling →
Un-named tributary of the River Birket 1 0.1 down 75% 100%
Ribchester WwTW
Inlet overflow at sewage works
Sewage works
Ribchester
Company site name
RIBCHESTER WwTW
EA ID / permit
UUP01651 · 017160043
Outlet location
SD6516034401 (OS grid reference) · View on Apple Maps
WFD catchment
Ribble - conf Calder to tidal (GB112071065500)
2024 spills / hours
2 / 0.0
Long-term average
20.1 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.1 hours spilling →
River Ribble 1 0.1 down 50% 100%
Troutbeck Road CSO 508B3
Overflow on sewer network
Company site name
Troutbeck Road CSO
EA ID / permit
UUP01968 · 016983357
Outlet location
SJ5854398979 (OS grid reference) · View on Apple Maps
WFD catchment
Millingford (Newton) Brook (GB112069061220)
2024 spills / hours
0 / 0.0
Long-term average
1.0 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.0 hours spilling →
Millingford Brook 2 0.0 up from 0 100%
Middleton Road CSO
Overflow on sewer network
Company site name
Middleton Road (Heywood) CSO
EA ID / permit
UUP01299 · NPSWQD010709
Outlet location
SD8635009120 (OS grid reference) · View on Apple Maps
WFD catchment
Whittle Brook (Irwell) (GB112069061250)
2024 spills / hours
0 / 0.0
Long-term average
1.8 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.0 hours spilling →
Whittle Brook via SWS 1 0.0 up from 0 100%
Adj Police Station King Street CSO
Overflow on sewer network
EA ID / permit
UUP00082 · 01RIB0002
Outlet location
SD7313041110 (OS grid reference) · View on Apple Maps
WFD catchment
Mearley Brook (GB112071065510)
2024 spills / hours
2 / 1.4
Long-term average
4.8 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.0 hours spilling →
Trib of Pendleton Brook by SWS 1 0.0 down 50% 96%
Rating Lane/Meadowlands Avenue CSO
Overflow on sewer network
Company site name
Rating Lane/Meadowlands Avenue CSO
EA ID / permit
UUP01612 · 017480446
Outlet location
SD2194069339 (OS grid reference) · View on Apple Maps
WFD catchment
Mill Beck (Poaka Beck) (GB112074069790)
Bathing water
Walney West Shore
Shellfish water
Walney; Roosebeck
2024 spills / hours
– / –
Long-term average
12.2 spills a year (monitored since 2016)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.0 hours spilling →
Mill Beck 1 0.0 93%
Brougham Pumping Station
Storm discharge at pumping station
Company site name
Brougham Pumping Station (17502) (EDE0085)
EA ID / permit
UUP00353 · 017680334
Outlet location
NY5317028700 (OS grid reference) · View on Apple Maps
WFD catchment
Lowther (Lower) (GB102076071010)
2024 spills / hours
0 / 0.0
Long-term average
0.7 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.0 hours spilling →
Trib River Eamont 1 0.0 up from 0 100%
Owley Wood Road CSO (in Scout Hut)
Overflow on sewer network
Company site name
(In Scout Hut) Owley Road CSO
EA ID / permit
UUP00001 · 01VRY0096
Outlet location
SJ6250074270 (OS grid reference) · View on Apple Maps
WFD catchment
Weaver (Dane to Frodsham) (GB112068060500)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Weaver 0 0.0 no change 100%
184 Warrington Road CSO
Overflow on sewer network
Company site name
184 Warrington Road CSO
EA ID / permit
UUP00012 · EPRHB3499NK
Outlet location
SD5671804467 (OS grid reference) · View on Apple Maps
WFD catchment
Douglas - Lower (GB112070064820)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2021)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Trib of River Douglas via SWS 0 0.0 no change 100%
242 Stockport Rd West
Overflow on sewer network
Company site name
242 Stockport Road West CSO
EA ID / permit
UUP00022 · 01STK0002
Outlet location
SJ9202091751 (OS grid reference) · View on Apple Maps
WFD catchment
Goyt (Etherow to Mersey) (GB112069061000)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2024)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Crookilley Brook Culvert 0 0.0 no change 97%
3 Park Road CSO
Overflow on sewer network
Company site name
No 3 Park Road CSO
EA ID / permit
UUP00034 · 016982965
Outlet location
SJ3718080580 (OS grid reference) · View on Apple Maps
WFD catchment
Manchester Ship Canal (GB71210004)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2024)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Manchester Ship Canal 0 0.0 no change 100%
3 Wood Road CSO
Overflow on sewer network
Company site name
3 Wood Road CSO
EA ID / permit
UUP00035 · 016982628
Outlet location
SJ8128794750 (OS grid reference) · View on Apple Maps
WFD catchment
Irwell / Manchester Ship Canal (Irk to confluence with Upper Mersey) (GB112069061452)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Ouel Brook 0 0.0 no change 100%
Agecroft Road East CSO
Overflow on sewer network
Company site name
Agecroft Road East CSO
EA ID / permit
UUP00087 · 01BRY0045
Outlet location
SD8060002130 (OS grid reference) · View on Apple Maps
WFD catchment
Irwell (Croal to Irk) (GB112069061451)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2024)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Irwell via Culvert 0 0.0 no change 98%
Anderton Field NO28
Storm discharge at pumping station
Company site name
Anderton Field No. 28
EA ID / permit
UUP00117 · 01VRY0002
Outlet location
SJ6496076140 (OS grid reference) · View on Apple Maps
WFD catchment
Cogshall Brook (GB112068060510)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2024)
Monitor below 90%
Sensor failure / issue · Resolved - Nov
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Marbury Brook 0 0.0 no change 82%
Argyl Street
Overflow on sewer network
Company site name
Argyll Street CSO
EA ID / permit
UUP00128 · 01TAM0046
Outlet location
SJ9521099000 (OS grid reference) · View on Apple Maps
WFD catchment
Tame (Swineshaw Brook to Mersey) (GB112069061112)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2024)
Monitor below 90%
Sensor failure / issue · Resolved - Oct
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Cock Brook 0 0.0 no change 89%
Back Queens Park Rd
Overflow on sewer network
Company site name
Back Queen's Park Road CSO
EA ID / permit
UUP00164 · 01BBN0055
Outlet location
SD6938027420 (OS grid reference) · View on Apple Maps
WFD catchment
Blakewater (GB112071065310)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2024)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Culvert Pringle St 0 0.0 no change 98%
Bank Street CSO
Overflow on sewer network
Company site name
BANK STREET STORAGE TANK CSO (28CSO123)
EA ID / permit
UUP00180 · 016982847
Outlet location
SJ8749099230 (OS grid reference) · View on Apple Maps
WFD catchment
Medlock (Lumb Brook to Irwell) (GB112069061152)
2024 spills / hours
– / –
Long-term average
0.0 spills a year (monitored since 2024)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Medlock 0 0.0 100%
Beswick St Ashton New Rd CSO 281D0
Overflow on sewer network
Company site name
Beswick Street/Ashton New Road CSO
EA ID / permit
UUP00225 · 016982710
Outlet location
SJ8597098460 (OS grid reference) · View on Apple Maps
WFD catchment
Medlock (Lumb Brook to Irwell) (GB112069061152)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Medlock 0 0.0 no change 100%
Bolton Road CSO
Overflow on sewer network
Company site name
Bolton Road CSO
EA ID / permit
UUP00272 · 017180468
Outlet location
SD6959021070 (OS grid reference) · View on Apple Maps
WFD catchment
Darwen - headwaters to conf Davy Field Bk (GB112071065240)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Tributary of River Darwen 0 0.0 no change 100%
Bradford Road
Overflow on sewer network
Company site name
Swinton Eccles Transfer Sewer Stage 1
EA ID / permit
UUP00295 · 016941304
Outlet location
SJ7742099920 (OS grid reference) · View on Apple Maps
WFD catchment
Folly Brook and Salteye Brook (GB112069061430)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2024)
Monitor below 90%
Sensor failure / issue · Resolved - Oct
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Salteye Brook 0 0.0 no change 84%
Bridge Rd Jct Copy Lane
Overflow on sewer network
Company site name
Dunning's Bridge Road, Junction Copy Lane CSO
EA ID / permit
UUP00316 · 01SEF0010
Outlet location
SJ3696099830 (OS grid reference) · View on Apple Maps
WFD catchment
Alt US Bull Bridge (GB112069061441)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2024)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Moor Hey Brook tributary of the River Alt 0 0.0 no change 99%
Burnley Rd/Middlegate CSO
Overflow on sewer network
Company site name
Burnley Road/Middlegate CSO
EA ID / permit
UUP00367 · 016982931
Outlet location
SD8095026100 (OS grid reference) · View on Apple Maps
WFD catchment
Limy Water (GB112069064680)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2024)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Limy Water Trib of Irwell 0 0.0 no change 94%
Caird Avenue Combined Seweroverflow
Overflow on sewer network
Company site name
Caird Avenue CSO
EA ID / permit
UUP00388 · 017680416
Outlet location
NY3855057430 (OS grid reference) · View on Apple Maps
WFD catchment
Eden - Eamont to tidal (GB102076073940)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Pow Beck via SWS 0 0.0 no change 94%
Calder, Huncoat Industrial Estate
Overflow on sewer network
Company site name
Huncoat Industrial Site
EA ID / permit
UUP00392 · 01HYN0012
Outlet location
SD7730130446 (OS grid reference) · View on Apple Maps
WFD catchment
Calder - Pendle Water to conf Ribble (GB112071065490)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2024)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Clough Brook 0 0.0 no change 98%
Castle Drive CSO
Overflow on sewer network
Company site name
Castle Hill Drive CSO
EA ID / permit
UUP00421 · 01EDE0035
Outlet location
NY5188029731 (OS grid reference) · View on Apple Maps
WFD catchment
Eamont (Upper) (GB102076071020)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Dog Beck via SWS 0 0.0 no change 99%
Chapel Green Road
Overflow on sewer network
Company site name
Junction of Romford Street & Chapel Green Road CSO
EA ID / permit
UUP00440 · 01WIG0058
Outlet location
SD6196004410 (OS grid reference) · View on Apple Maps
WFD catchment
Hey/Borsdane Brook (GB112069064520)
2024 spills / hours
– / –
Long-term average
0.0 spills a year (monitored since 2024)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Borsdane Brook 0 0.0 100%
Chester Way
Overflow on sewer network
Company site name
Northwich Resewerage Scheme
EA ID / permit
UUP00461 · 01VRY0001
Outlet location
SJ6593773780 (OS grid reference) · View on Apple Maps
WFD catchment
Dane (Wheelock to Weaver) (GB112068060470)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2024)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Dane 0 0.0 no change 100%
Daisy Lane CSO
Overflow on sewer network
EA ID / permit
UUP00597 · 01BBN0033
Outlet location
SD6903028610 (OS grid reference) · View on Apple Maps
WFD catchment
Blakewater (GB112071065310)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2024)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
River Blakewater 0 0.0 no change 100%
Davyhulme Road East
Overflow on sewer network
Company site name
Davyhulme Road East
EA ID / permit
UUP00619 · 016982694
Outlet location
SJ8003094950 (OS grid reference) · View on Apple Maps
WFD catchment
Irwell / Manchester Ship Canal (Irk to confluence with Upper Mersey) (GB112069061452)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2024)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Longford Brook 0 0.0 no change 100%
Dock St Overflow
Overflow on sewer network
Company site name
Dock Street CSO
EA ID / permit
UUP00646 · 01WYR0028
Outlet location
SD3389047630 (OS grid reference) · View on Apple Maps
WFD catchment
Morecambe Bay - transitional (GB641211171000)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2024)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Copse Brook Culvert 0 0.0 no change 100%
Duke Street
Overflow on sewer network
Company site name
Duke Street CSO
EA ID / permit
UUP00660 · 01LAK0044
Outlet location
SD5171078500 (OS grid reference) · View on Apple Maps
WFD catchment
Holme Beck (GB112073071050)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2024)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Holme Beck 0 0.0 no change 99%
Gelt Road CSO
Overflow on sewer network
Company site name
CSO at Gelt Road
EA ID / permit
UUP00784 · 017680282
Outlet location
NY5260061100 (OS grid reference) · View on Apple Maps
WFD catchment
Irthing DS Crammel Linn Waterfall (GB102076073981)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2024)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Brampton Beck 0 0.0 no change 98%

Sewage treatment works

Storm tanks and inlet overflows at each United Utilities 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.