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
Tbc
Overflow on sewer network
Company site name
Lostock Street / Lower Vickers Street CSO (282DO)
EA ID / permit
UUP02223 · Permit applied for
Outlet location
SJ8567299036 (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 2024)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Medlock 0 0.0 no change 99%
Moses Gate Country Park CSO BOL0242
Overflow on sewer network
Company site name
Moses Gate Country Park CSO (073I5)
EA ID / permit
UUP02228 · EPRJB3893RH
Outlet location
SD7493006744 (OS grid reference) · View on Apple Maps
WFD catchment
Croal (including Blackshaw Brook) (GB112069064550)
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 Croal 0 0.0 no change 95%
Tbc
Overflow on sewer network
Company site name
Mount Street CSO (079KM)
EA ID / permit
UUP02230 · Permit applied for
Outlet location
SD7217710200 (OS grid reference) · View on Apple Maps
WFD catchment
Middle Brook (GB112069064540)
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 Tonge via a surface water sewer 0 0.0 no change 99%
Tbc
Overflow on sewer network
Company site name
Parker Street CSO (228ES)
EA ID / permit
UUP02233 · Permit applied for
Outlet location
SD7362530750 (OS grid reference) · View on Apple Maps
WFD catchment
Hyndburn Brook - Lower (GB112071065070)
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
Hyndburn Brook via surface water sewer 0 0.0 no change 100%
Tbc
Overflow on sewer network
Company site name
Pool Lane CSO (512L8)
EA ID / permit
UUP02234 · Permit applied for
Outlet location
SJ2825887685 (OS grid reference) · View on Apple Maps
WFD catchment
The Birket including Arrowe Brook and Fender (GB112068060530)
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
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Fender 0 0.0 no change 82%
Tbc
Overflow on sewer network
Company site name
Regent Road / Ordsall Lane CSO (372NO)
EA ID / permit
UUP02236 · Unpermitted
Outlet location
SJ8261997591 (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)
Monitor below 90%
Sensor failure / issue · Resolved - Nov
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Irwell 0 0.0 no change 83%
Tbc
Overflow on sewer network
Company site name
Sagars Rd CSO (279DF)
EA ID / permit
UUP02237 · Permit applied for
Outlet location
SJ8522083613 (OS grid reference) · View on Apple Maps
WFD catchment
Dean (Bollington to Bollin) (GB112069061360)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2024)
Monitor below 90%
Sensor failure / issue · Resolved - Jun
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Dean Brook 0 0.0 no change 58%
Tbc
Overflow on sewer network
Company site name
Union Street / Whitehall Street CSO
EA ID / permit
UUP02245 · Permit applied for
Outlet location
SD8976213754 (OS grid reference) · View on Apple Maps
WFD catchment
Roch (Source to Spodden) (GB112069064720)
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
Culverted section of River Roch 0 0.0 no change 94%
Tbc
Overflow on sewer network
Company site name
59 Moorside Road (099KU)
EA ID / permit
UUP02249 · Permit applied for
Outlet location
SD7751112439 (OS grid reference) · View on Apple Maps
WFD catchment
Kirklees Brook (GB112069064610)
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
Kirklees Brook 0 0.0 no change 99%
Tbc
Overflow on sewer network
Company site name
The Hayloft Bouth (399KN)
EA ID / permit
UUP02253 · Permit applied for
Outlet location
SD3286985685 (OS grid reference) · View on Apple Maps
WFD catchment
Leven (GB112073071420)
2024 spills / hours
0 / 0.0
Long-term average
0.0 spills a year (monitored since 2024)
Monitor below 90%
Comms failure / issue · Resolved - Jun
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Wear Beck 0 0.0 no change 47%
Ireby WwTW
Inlet overflow at sewage works
Sewage works
Ireby
Company site name
Ireby WwTW
EA ID / permit
UUP02267 · Unpermitted
Outlet location
NY2405039260 (OS grid reference) · View on Apple Maps
WFD catchment
Ellen (upper) (GB112075073630)
2024 spills / hours
164 / 669
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 Ellen 0 0.0 down 100% 99%
Tbc
Overflow on sewer network
Company site name
Birch Avenue CSO (134JU)
EA ID / permit
UUP02282 · Permit applied for
Outlet location
SJ7996755137 (OS grid reference) · View on Apple Maps
WFD catchment
Valley Brook (Source to Englesea Brook) (GB112068074630)
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
Culverted section of Valley Brook via surface water sewer 0 0.0 no change 100%
Tbc
Overflow on sewer network
Company site name
2 Hopkin View CSO
EA ID / permit
UUP02285 · Permit applied for
Outlet location
SD9496003854 (OS grid reference) · View on Apple Maps
WFD catchment
Medlock (Source to Lumb Brook) (GB112069061151)
2024 spills / hours
– / –
Long-term average
0.0 spills a year (monitored since 2025)
Monitor below 90%
Sensor failure / issue · Resolved - Dec
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Thornley Brook 0 0.0 81%
Tbc
Overflow on sewer network
Company site name
Manchester Road Memorial House CSO (378NQ)
EA ID / permit
UUP02286 · Permit applied for
Outlet location
SD9496003854 (OS grid reference) · View on Apple Maps
WFD catchment
Irwell (Croal to Irk) (GB112069061451)
2024 spills / hours
– / –
Long-term average
0.0 spills a year (monitored since 2025)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Irwell 0 0.0 92%
Tbc
Overflow on sewer network
Company site name
Longdin Street CSO (483FQ)
EA ID / permit
UUP02287 · Permit applied for
Outlet location
SJ6168587560 (OS grid reference) · View on Apple Maps
WFD catchment
Mersey ( Bollin confluence to Howley Weir) (GB112069061012)
2024 spills / hours
– / –
Long-term average
0.0 spills a year (monitored since 2025)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Mersey 0 0.0 96%
Harrowside Bridge Pumping Station
Storm discharge at pumping station
Company site name
Harrowside Bridge Pumping Station
EA ID / permit
UUP00906 · 017180568
Outlet location
SD3063132517 (OS grid reference) · View on Apple Maps
WFD catchment
Main Drain (Ribble) (GB112071065651)
Bathing water
Blackpool North; Blackpool Central; Blackpool South
2024 spills / hours
0 / 0.0
Long-term average
0.1 spills a year (monitored since 2018)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Irish Sea 0 0.0 no change 100%
Cambridge Street CSO 282D9
Overflow on sewer network
Company site name
Cambridge Street CSO
EA ID / permit
UUP00395 · 016982721
Outlet location
SJ8385097410 (OS grid reference) · View on Apple Maps
WFD catchment
Medlock (Lumb Brook to Irwell) (GB112069061152)
2024 spills / hours
0 / 0.0
Long-term average
0.1 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%
Hough Lane Back CSO
Overflow on sewer network
Company site name
Hough Lane Back CSO
EA ID / permit
UUP00994 · 016982928
Outlet location
SD7196313098 (OS grid reference) · View on Apple Maps
WFD catchment
Eagley Brook (GB112069064570)
2024 spills / hours
0 / 0.0
Long-term average
0.1 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Eagley Brook 0 0.0 no change 100%
Smithy Lane Pumping Station 19003
Storm discharge at pumping station
Company site name
Smithy Lane PS
EA ID / permit
UUP01775 · 01FYL0011
Outlet location
SD3420029400 (OS grid reference) · View on Apple Maps
WFD catchment
Liggard Brook (GB112071065650)
Bathing water
St Annes
Shellfish water
Ribble
2024 spills / hours
1 / 6.9
Long-term average
0.1 spills a year (monitored since 2017)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Unnamed tributary of Laggard Brook 0 0.0 down 100% 99%
876 Burnley Rd East CSO
Overflow on sewer network
Company site name
876 Burnley Road East CSO
EA ID / permit
UUP00061 · 01ROS0006
Outlet location
SD8366024720 (OS grid reference) · View on Apple Maps
WFD catchment
Whitewell Brook (GB112069064670)
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
Whitewell Brook 0 0.0 no change 100%
Bridgeman St Higher Swan Lane CSO
Overflow on sewer network
Company site name
Bridgeman Street/Higher Swan Lane CSO
EA ID / permit
UUP00322 · 01BOL0116
Outlet location
SD7087007540 (OS grid reference) · View on Apple Maps
WFD catchment
Middle Brook (GB112069064540)
2024 spills / hours
0 / 0.0
Long-term average
0.2 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Tanner Hole Brook 0 0.0 no change 94%
Common End Combined Sewer Overflow
Overflow on sewer network
Company site name
Common End CSO
EA ID / permit
UUP00528 · 017480427
Outlet location
NY0043022740 (OS grid reference) · View on Apple Maps
WFD catchment
Lowca Beck (GB112074070040)
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
Distington Beck 0 0.0 no change 100%
Dane Street CSO 131Q1
Overflow on sewer network
Company site name
DANE STREET CSO
EA ID / permit
UUP00607 · 01CON0001
Outlet location
SJ8542063220 (OS grid reference) · View on Apple Maps
WFD catchment
Dane (Cow Brook to Wheelock) (GB112068060190)
2024 spills / hours
0 / 0.0
Long-term average
0.2 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Dane 0 0.0 no change 96%
Fairfield Rd Russell Rd CSO 25026
Storm discharge at pumping station
Company site name
Fairfield Road/Russell Road CSO
EA ID / permit
UUP00715 · 01LAN0070
Outlet location
SD5038070130 (OS grid reference) · View on Apple Maps
WFD catchment
Keer - Lower (GB112073064430)
2024 spills / hours
0 / 0.0
Long-term average
0.2 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Clvrt Back Lane / Kellet Rd 0 0.0 no change 100%
Friday Street CSO 121UY
Overflow on sewer network
Company site name
FRIDAY STREET CSO
EA ID / permit
UUP00764 · 01CHR0010
Outlet location
SD5820017890 (OS grid reference) · View on Apple Maps
WFD catchment
Yarrow DS Big Lodge Water (GB112070064952)
2024 spills / hours
0 / 0.0
Long-term average
0.2 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
River Chor 0 0.0 no change 97%
Hunts Bank Combined Sewer Overflow
Overflow on sewer network
Company site name
HUNTS BANK CSO
EA ID / permit
UUP01002 · 01MAN0176
Outlet location
SJ8393898974 (OS grid reference) · View on Apple Maps
WFD catchment
Irk (Wince to Irwell) (GB112069061131)
2024 spills / hours
0 / 0.0
Long-term average
0.2 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
River Irk 0 0.0 no change 99%
Shuttleworth Stcalder St CSO
Overflow on sewer network
Company site name
SHUTTLEWORTH STREET / CALDER STREET CSO
EA ID / permit
UUP01755 · 01BUR0024
Outlet location
SD7926033900 (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
0.2 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Calder 0 0.0 no change 100%
St Werburghs Rd CSO Site 282T5
Overflow on sewer network
Company site name
St Werbughes Road / Sandy Lane CSO
EA ID / permit
UUP01833 · 01MAN0232
Outlet location
SJ8234093340 (OS grid reference) · View on Apple Maps
WFD catchment
Chorlton Brook (Princess Parkway to Mersey) (GB112069061040)
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
Chorlton Brook 0 0.0 no change 100%
Tong Lane/Reed Street CSO
Overflow on sewer network
Company site name
TONG LANE / REED STREET CSO
EA ID / permit
UUP01948 · 01ROS0019
Outlet location
SD8710023170 (OS grid reference) · View on Apple Maps
WFD catchment
Irwell (Source to Whitewell Brook) (GB112069064660)
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
Gleave Clough Brook 0 0.0 no change 100%
Abbeyhills Combined Sewer Overflow
Overflow on sewer network
Company site name
Abbeyhills Road CSO
EA ID / permit
UUP00071 · 016982467
Outlet location
SD9482203177 (OS grid reference) · View on Apple Maps
WFD catchment
Medlock (Source to Lumb Brook) (GB112069061151)
2024 spills / hours
0 / 0.0
Long-term average
0.2 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Trib River Medlock 0 0.0 no change 100%
Great Bridgewater St CSO (281WI)
Overflow on sewer network
Company site name
Great Bridgewater Street CSO
EA ID / permit
UUP00836 · 016982707
Outlet location
SJ8381097460 (OS grid reference) · View on Apple Maps
WFD catchment
Medlock (Lumb Brook to Irwell) (GB112069061152)
2024 spills / hours
0 / 0.0
Long-term average
0.2 spills a year (monitored since 2021)
Monitor below 90%
Sensor failure / issue · Resolved - Oct
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Medlock 0 0.0 no change 87%
Hillkirk Street CSO (282I9)
Overflow on sewer network
Company site name
Hillkirk Street CSO
EA ID / permit
UUP00969 · 016982726
Outlet location
SJ8615098500 (OS grid reference) · View on Apple Maps
WFD catchment
Medlock (Lumb Brook to Irwell) (GB112069061152)
2024 spills / hours
0 / 0.0
Long-term average
0.2 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Medlock 0 0.0 no change 92%
Levant Mill Footbridge CSO (O82CV)
Overflow on sewer network
Company site name
Levant Mill Footbridge CSO
EA ID / permit
UUP01133 · 01BUR0027
Outlet location
SD7958033440 (OS grid reference) · View on Apple Maps
WFD catchment
Green Brook (GB112071065080)
2024 spills / hours
0 / 0.0
Long-term average
0.2 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Green Brook 0 0.0 no change 100%
Stevenson Close (Worsley) CSO
Overflow on sewer network
Company site name
Stevenson Close (Worsley) CSO
EA ID / permit
UUP01857 · 017091463
Outlet location
SD5734004410 (OS grid reference) · View on Apple Maps
WFD catchment
Smithy Brook (GB112070061600)
2024 spills / hours
0 / 0.0
Long-term average
0.2 spills a year (monitored since 2021)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Smithy Brook via SWS 0 0.0 no change 100%
Tonge Valley CSO
Overflow on sewer network
Company site name
Tonge Valley CSO
EA ID / permit
UUP01950 · 016983223
Outlet location
SD7208010910 (OS grid reference) · View on Apple Maps
WFD catchment
Tonge (GB112069064530)
2024 spills / hours
0 / 0.0
Long-term average
0.2 spills a year (monitored since 2021)
Monitor below 90%
Telemetry or data archiving failure / issue · Resolved - Nov
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Tonge 0 0.0 no change 77%
18 Deepdale Road
Overflow on sewer network
Company site name
18 Deepdale Road CSO
EA ID / permit
UUP00010 · 017190864
Outlet location
SD5528028741 (OS grid reference) · View on Apple Maps
WFD catchment
RIBBLE_Transitional (GB531207112400)
Bathing water
St Annes
2024 spills / hours
0 / 0.0
Long-term average
0.3 spills a year (monitored since 2017)
Monitor below 90%
Sensor failure / issue · Resolved - Jul
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Ribble via a surface water sewer 0 0.0 no change 55%
Church Bank (Side of Viaduct) CSO
Overflow on sewer network
Company site name
Church Bank (Side of Viaduct)
EA ID / permit
UUP00478 · 016982610
Outlet location
SD7214009260 (OS grid reference) · View on Apple Maps
WFD catchment
Middle Brook (GB112069064540)
2024 spills / hours
0 / 0.0
Long-term average
0.3 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Croal Minor 0 0.0 no change 96%
Dale Street CSO 331R7
Overflow on sewer network
Company site name
Dale Street CSO
EA ID / permit
UUP00598 · 017180527
Outlet location
SD5528028750 (OS grid reference) · View on Apple Maps
WFD catchment
RIBBLE_Transitional (GB531207112400)
2024 spills / hours
0 / 0.0
Long-term average
0.3 spills a year (monitored since 2019)
Monitor below 90%
Sensor failure / issue · Resolved - Aug
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Ribble Tidal 0 0.0 no change 89%
Bolton Low Houses CSO
Overflow on sewer network
Company site name
Bolton Low Houses CSO
EA ID / permit
UUP00266 · 017580313
Outlet location
NY2391044530 (OS grid reference) · View on Apple Maps
WFD catchment
Waver (GB102075073440)
2024 spills / hours
0 / 0.0
Long-term average
0.3 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Waver 0 0.0 no change 100%
Manchester Road (Greenfield) CSO
Overflow on sewer network
Company site name
Manchester Road (Greenfield) CSO
EA ID / permit
UUP00596 · 016982633
Outlet location
SD9886603857 (OS grid reference) · View on Apple Maps
WFD catchment
Tame (Chew Brook to Swineshaw Brook) (GB102076070940)
2024 spills / hours
1 / 0.1
Long-term average
0.3 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Tame 0 0.0 down 100% 100%
Fairfield St/Stevenson St East CSO
Overflow on sewer network
Company site name
FAIRFIELD STREET / STEVENSON STREET EAST CSO
EA ID / permit
UUP00716 · 01HYN0024
Outlet location
SD7494028100 (OS grid reference) · View on Apple Maps
WFD catchment
Hyndburn (GB112071065040)
2024 spills / hours
0 / 0.0
Long-term average
0.3 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Culv Section of Tinker Brook 0 0.0 no change 98%
Mill Street CSO Crewe 169CW
Overflow on sewer network
Company site name
MILL STREET CSO
EA ID / permit
UUP01318 · 01CRE0042
Outlet location
SJ7066055300 (OS grid reference) · View on Apple Maps
WFD catchment
Valley Brook (Englesea Brook to Weaver) (GB112068055310)
2024 spills / hours
0 / 0.0
Long-term average
0.3 spills a year (monitored since 2019)
Monitor below 90%
Sensor failure / issue · Resolved - Jun
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Valley Brook 0 0.0 no change 89%
Mossway CSO
Overflow on sewer network
Company site name
Mossway CSO
EA ID / permit
UUP01353 · 016982901
Outlet location
SD8686003920 (OS grid reference) · View on Apple Maps
WFD catchment
Irk (Wince to Irwell) (GB112069061131)
2024 spills / hours
0 / 0.0
Long-term average
0.3 spills a year (monitored since 2020)
Monitor below 90%
Sensor failure / issue · Resolved - Apr
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Boardman Brook 0 0.0 no change 77%
Bradley Road CSO (328N5)
Overflow on sewer network
Company site name
BRADLEY ROAD CSO
EA ID / permit
UUP00298 · 01PEN0010
Outlet location
SD8619038170 (OS grid reference) · View on Apple Maps
WFD catchment
Walverden Water (GB112071065130)
2024 spills / hours
2 / 0.3
Long-term average
0.4 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Walverden Water 0 0.0 down 100% 100%
Manchester Road (Lostock) CSO
Overflow on sewer network
Company site name
Manchester Road (Lostock) CSO
EA ID / permit
UUP01234 · EPRSB3399DG
Outlet location
SJ6855074780 (OS grid reference) · View on Apple Maps
WFD catchment
Peover Eye (GB112068060390)
2024 spills / hours
0 / 0.0
Long-term average
0.4 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Wincham Brook 0 0.0 no change 100%
Oldham WwTW
Storm tank at sewage works
Sewage works
Oldham
Company site name
OLDHAM WwTW
EA ID / permit
UUP01460 · 016950038
Outlet location
SD8937004430 (OS grid reference) · View on Apple Maps
WFD catchment
Wince Brook (GB112069061120)
2024 spills / hours
0 / 0.0
Long-term average
0.4 spills a year (monitored since 2021)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Wince Brook 0 0.0 no change 100%
Rear of 489 Manchester Road CSO
Overflow on sewer network
Company site name
Rear of 489 Manchester Road CSO
EA ID / permit
UUP01630 · 01HYN0053
Outlet location
SD7688026530 (OS grid reference) · View on Apple Maps
WFD catchment
Hyndburn (GB112071065040)
2024 spills / hours
0 / 0.0
Long-term average
0.4 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Woodnook Water via SWS 0 0.0 no change 100%
Stockport Road/Hill Top Drive CSO
Overflow on sewer network
Company site name
Stockport Road CSO
EA ID / permit
UUP01865 · NPSWQD010103
Outlet location
SJ9429988849 (OS grid reference) · View on Apple Maps
WFD catchment
Goyt (Etherow to Mersey) (GB112069061000)
2024 spills / hours
2 / 1.2
Long-term average
0.4 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Marple Brook via SWS 0 0.0 down 100% 100%
Vicarage Lane CSO 022WD
Overflow on sewer network
Company site name
Vicarage Lane
EA ID / permit
UUP01991 · 017580253
Outlet location
NY1275030230 (OS grid reference) · View on Apple Maps
WFD catchment
Tom Rudd Beck (GB112075070390)
2024 spills / hours
0 / 0.0
Long-term average
0.4 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Tom Rudd Beck 0 0.0 no change 100%
Bond St CSO
Overflow on sewer network
Company site name
Bond Street CSO
EA ID / permit
UUP00278 · EPRQB3592AV
Outlet location
SD9049014580 (OS grid reference) · View on Apple Maps
WFD catchment
Roch (Source to Spodden) (GB112069064720)
2024 spills / hours
0 / 0.0
Long-term average
0.5 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Hey Brook via SWS 0 0.0 no change 97%

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.