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
King Street CSO 072BV
Overflow on sewer network
Company site name
KING STREET CSO
EA ID / permit
UUP01065 · 01BOL0123
Outlet location
SD7138009370 (OS grid reference) · View on Apple Maps
WFD catchment
Middle Brook (GB112069064540)
2024 spills / hours
0 / 0.0
Long-term average
1.5 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Croal 0 0.0 no change 94%
19 Wood Lane CSO
Overflow on sewer network
Company site name
19 Wood Lane (Marple) CSO
EA ID / permit
UUP00014 · 016892515
Outlet location
SJ9476088370 (OS grid reference) · View on Apple Maps
WFD catchment
Goyt (Etherow to Mersey) (GB112069061000)
2024 spills / hours
4 / 1.7
Long-term average
1.6 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Trib Torkington Brook via SWS 0 0.0 down 100% 100%
Back of Woodland Drive CSO
Overflow on sewer network
Company site name
Back of Woodland Drive CSO
EA ID / permit
UUP00163 · 01WYR0023
Outlet location
SD3522038110 (OS grid reference) · View on Apple Maps
WFD catchment
Hillylaid Pool - Tidal Wyre (GB112072066120)
Bathing water
Fleetwood
Shellfish water
Lune (Wyre Estuary)
2024 spills / hours
0 / 0.0
Long-term average
1.6 spills a year (monitored since 2018)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Unnamed Tributary of Main Dyke 0 0.0 no change 94%
Bentcliffe Way/Wood St CSO
Overflow on sewer network
Company site name
Bentcliffe Way / Wood Street CSO
EA ID / permit
UUP00221 · 01SAL0022
Outlet location
SJ7815098360 (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
1.7 spills a year (monitored since 2020)
Monitor below 90%
Sensor failure / issue · Resolved - Nov
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Gilda Brook 0 0.0 no change 90%
Cornmill Cottages CSO
Overflow on sewer network
Company site name
Cornmill Cottages CSO
EA ID / permit
UUP00543 · 01PEN0021
Outlet location
SD8778047180 (OS grid reference) · View on Apple Maps
WFD catchment
Stock Beck (GB112071065540)
2024 spills / hours
2 / 0.2
Long-term average
1.7 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Butts Beck 0 0.0 down 100% 100%
36 Hibbert Lane CSO 431Y7
Overflow on sewer network
Company site name
36 Hibbert Lane CSO
EA ID / permit
UUP00039 · 01STK0099
Outlet location
SJ9527088420 (OS grid reference) · View on Apple Maps
WFD catchment
Goyt (Etherow to Mersey) (GB112069061000)
2024 spills / hours
0 / 0.0
Long-term average
1.7 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Marple Brk Trib Torkington Br 0 0.0 no change 97%
Caledonia St Hibernia St CSO 071IB
Overflow on sewer network
Company site name
Caledonia Street/Hibernia Street CSO
EA ID / permit
UUP00393 · 016982882
Outlet location
SD7080009120 (OS grid reference) · View on Apple Maps
WFD catchment
Middle Brook (GB112069064540)
2024 spills / hours
0 / 0.0
Long-term average
1.7 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Middle Brook via SWS 0 0.0 no change 94%
Saltworks Pumping Station
Storm discharge at pumping station
Company site name
ICI Saltworks PS
EA ID / permit
UUP01709 · EPRQB3792NT
Outlet location
SJ4960081800 (OS grid reference) · View on Apple Maps
WFD catchment
MERSEY - Transitional (GB531206908100)
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
Manchester Ship Canal via SWS 0 0.0 no change 100%
Waterbarn Street/Barden Lane CSO
Overflow on sewer network
Company site name
Waterbarn Street/Barden Lane Combined Sewer Overflow
EA ID / permit
UUP02043 · 017160195
Outlet location
SD8371034320 (OS grid reference) · View on Apple Maps
WFD catchment
Irwell (Source to Whitewell Brook) (GB112069064660)
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
Unnamed Trib of River Calder 0 0.0 no change 98%
Alum Bridge Pumping Station
Storm discharge at pumping station
Company site name
Alum Bridge PS
EA ID / permit
UUP00113 · 01CON0064
Outlet location
SJ7650066500 (OS grid reference) · View on Apple Maps
WFD catchment
Croco (GB112068055460)
2024 spills / hours
4 / 11
Long-term average
2.0 spills a year (monitored since 2024)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Croco 0 0.0 down 100% 100%
Church St PS
Storm discharge at pumping station
Company site name
Church Street PS
EA ID / permit
UUP00482 · 016892145
Outlet location
SJ6550066450 (OS grid reference) · View on Apple Maps
WFD catchment
Weaver (Winsford Flashes to Dane) (GB112068060463)
2024 spills / hours
4 / 10
Long-term average
2.0 spills a year (monitored since 2024)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
River Weaver 0 0.0 down 100% 100%
Clare Rd/Davenhill Rd CSO
Overflow on sewer network
Company site name
Clare Road/Davenhill Road CSO
EA ID / permit
UUP00493 · 016940833
Outlet location
SJ8735093540 (OS grid reference) · View on Apple Maps
WFD catchment
Fallowfield Brook (GB112069061410)
2024 spills / hours
0 / 0.0
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
Cringle Beck 0 0.0 no change 96%
Crawford Street (Nelson) CSO 321P3
Overflow on sewer network
Company site name
CRAWFORD STREET (Nelson) CSO
EA ID / permit
UUP00561 · 01PEN0008
Outlet location
SD8620038380 (OS grid reference) · View on Apple Maps
WFD catchment
Walverden Water (GB112071065130)
2024 spills / hours
7 / 4.2
Long-term average
2.0 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%
Dumers Lane Pumping Station
Storm discharge at pumping station
Company site name
Dumers Lane PS
EA ID / permit
UUP00666 · NPSWQD010892
Outlet location
SD8003008120 (OS grid reference) · View on Apple Maps
WFD catchment
Irwell (Rossendale STW to Roch) (GB112069064620)
2024 spills / hours
1 / 4.5
Long-term average
2.0 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Irwell 0 0.0 down 100% 100%
Park Road Combined Sewer Overflow
Overflow on sewer network
Company site name
Park Road CSO
EA ID / permit
UUP01513 · 01BUR0013
Outlet location
SD8637030180 (OS grid reference) · View on Apple Maps
WFD catchment
Calder - headwaters to conf Brun (GB112071065060)
2024 spills / hours
4 / 1.7
Long-term average
2.1 spills a year (monitored since 2018)
Investigation
No investigation activity in reporting period
Improvement
Env Act (SODRP) improvement ongoing
River Calder 0 0.0 down 100% 100%
South Parade CSO 202S2
Overflow on sewer network
Company site name
South Parade CSO
EA ID / permit
UUP01789 · 01HAL0106
Outlet location
SJ4963081130 (OS grid reference) · View on Apple Maps
WFD catchment
MERSEY - Transitional (GB531206908100)
2024 spills / hours
0 / 0.0
Long-term average
2.1 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Weaver Navigation 0 0.0 no change 97%
161 A Dickenson Road CSO
Overflow on sewer network
Company site name
161a Dickenson Road CSO
EA ID / permit
UUP00009 · 016982725
Outlet location
SJ8611095130 (OS grid reference) · View on Apple Maps
WFD catchment
Platt Brook (Source to Fallowfield Bk) (GB112069061060)
2024 spills / hours
5 / 6.6
Long-term average
2.2 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Gore Brook 0 0.0 down 100% 100%
First Avenue CSO
Overflow on sewer network
Company site name
First Avenue CSO
EA ID / permit
UUP00738 · 016993654
Outlet location
SJ7975097470 (OS grid reference) · View on Apple Maps
WFD catchment
Irwell / Manchester Ship Canal (Irk to confluence with Upper Mersey) (GB112069061452)
2024 spills / hours
1 / 0.3
Long-term average
2.2 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Manchester Ship Canal 0 0.0 down 100% 100%
Sandgate Pumping Station No 2
Storm discharge at pumping station
Company site name
SANDGATE PUMPING STATION
EA ID / permit
UUP01713 · 01FYL0005
Outlet location
SD3130029500 (OS grid reference) · View on Apple Maps
WFD catchment
MERSEY MOUTH - transitional (GB641211630001)
Bathing water
Morecambe North
2024 spills / hours
2 / 0.8
Long-term average
2.2 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 down 100% 100%
Stanley Road Pumping Station
Storm discharge at pumping station
Company site name
Stanley Road Pumping Station (Site ID 51005) (WIR0090)
EA ID / permit
UUP01843 · 016892431
Outlet location
SJ2036088320 (OS grid reference) · View on Apple Maps
WFD catchment
Dee (N. Wales) (GB531106708200)
Bathing water
West Kirby; Meols
Shellfish water
Dee (East); North Wirral (East)
2024 spills / hours
0 / 0.0
Long-term average
2.3 spills a year (monitored since 2017)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Irish Sea 0 0.0 no change 100%
Wharf Road CSO
Overflow on sewer network
Company site name
Wharf Road
EA ID / permit
UUP02104 · 01STH0109
Outlet location
SJ5656094750 (OS grid reference) · View on Apple Maps
WFD catchment
Sankey Brook (Rainford Brook to Mersey) (GB112069061200)
2024 spills / hours
3 / 4.8
Long-term average
2.3 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Sankey Brook 0 0.0 down 100% 99%
Railway Road/South Street CSO
Overflow on sewer network
Company site name
RAILWAY ROAD / SOUTH STREET CSO
EA ID / permit
UUP01605 · 01BBN0121
Outlet location
SD6928022300 (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
2.3 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Clvrtd Section of River Darwen 0 0.0 no change 92%
Pooley Bridge East WwTW
Inlet overflow at sewage works
Sewage works
Pooley Bridge East
Company site name
Pooley Bridge East wastewater treatment works (Site ID POOLE) (017670085)
EA ID / permit
UUP01559 · 017670085
Outlet location
NY4717024720 (OS grid reference) · View on Apple Maps
WFD catchment
Eamont (Upper) (GB102076071020)
2024 spills / hours
5 / 17
Long-term average
2.4 spills a year (monitored since 2017)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
River Eamont 0 0.0 down 100% 100%
Bridge Hall Lane CSO
Overflow on sewer network
Company site name
Bridge Hall Lane CSO
EA ID / permit
UUP00314 · 01BRY0065
Outlet location
SD8223010640 (OS grid reference) · View on Apple Maps
WFD catchment
Roch (Spodden to Irwell) (GB112069064600)
2024 spills / hours
0 / 0.0
Long-term average
2.4 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
River Roch 0 0.0 no change 100%
Millers Bridge CSO 99004
Overflow on sewer network
Company site name
Millers Bridge CSO
EA ID / permit
UUP01320 · 016931015
Outlet location
SJ3293094400 (OS grid reference) · View on Apple Maps
WFD catchment
MERSEY - Transitional (GB531206908100)
Bathing water
Wallasey
2024 spills / hours
2 / 3.5
Long-term average
2.4 spills a year (monitored since 2017)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Mersey Estuary 0 0.0 down 100% 100%
Field No.4649 Off Keele Road CSO
Overflow on sewer network
Company site name
Field No. 4649 (off Keele Road) CSO
EA ID / permit
UUP00731 · 01NEW0007
Outlet location
SJ7838045470 (OS grid reference) · View on Apple Maps
WFD catchment
Checkley Brook - Upper (GB112068055230)
2024 spills / hours
0 / 0.0
Long-term average
2.5 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Hazeley Brook 0 0.0 no change 99%
Janes Brook Road Pumping Station
Storm discharge at pumping station
Company site name
Janes Brook Road PS
EA ID / permit
UUP01031 · 01SEF0068
Outlet location
SD3573015750 (OS grid reference) · View on Apple Maps
WFD catchment
Three Pool's Waterway (GB112070064830)
Bathing water
Southport
Shellfish water
Ribble
2024 spills / hours
2 / 0.3
Long-term average
2.5 spills a year (monitored since 2017)
Monitor below 90%
Sensor failure / issue · Resolved - Oct
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Fine Janes Brook 0 0.0 down 100% 83%
Pilling Wastewater Treatment Works
Inlet overflow at sewage works
Sewage works
Pilling
Company site name
Pilling WwTW
EA ID / permit
UUP02273 · Unpermitted
Outlet location
SD4058248960 (OS grid reference) · View on Apple Maps
WFD catchment
Pilling Water (GB112072065860)
2024 spills / hours
5 / 11
Long-term average
2.5 spills a year (monitored since 2024)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Broad Fleet 0 0.0 down 100% 97%
Camerton WwTW Camer
Storm tank at sewage works
Sewage works
Camerton Camer
Company site name
CAMERTON WwTW
EA ID / permit
UUP00397 · 017570030
Outlet location
NY0298030100 (OS grid reference) · View on Apple Maps
WFD catchment
Derwent - conf Cocker to tidal (GB112075070520)
2024 spills / hours
0 / 0.0
Long-term average
2.6 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
River Derwent 0 0.0 no change 99%
Oxford Rd/Hollins Road CSO
Overflow on sewer network
Company site name
Oxford Road/Hollins Road CSO
EA ID / permit
UUP01497 · 017190824
Outlet location
SD8731038750 (OS grid reference) · View on Apple Maps
WFD catchment
Colne Water - Wanless Water to Pendle Water (GB112071065150)
2024 spills / hours
2 / 0.1
Long-term average
2.6 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Swinden Clough 0 0.0 down 100% 100%
Wallasey Ww Pumping Station
Storm discharge at pumping station
Company site name
Wallasey PS
EA ID / permit
UUP02012 · 016983300
Outlet location
SJ3262090640 (OS grid reference) · View on Apple Maps
WFD catchment
MERSEY - Transitional (GB531206908100)
Bathing water
Wallasey; Moreton
2024 spills / hours
1 / 2.4
Long-term average
2.6 spills a year (monitored since 2017)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Mersey Estuary 0 0.0 down 100% 100%
Cromford Avenue CSO 451P7
Overflow on sewer network
Company site name
Cromford Avenue CSO
EA ID / permit
UUP00568 · 016940200
Outlet location
SJ7879095370 (OS grid reference) · View on Apple Maps
WFD catchment
Irwell / Manchester Ship Canal (Irk to confluence with Upper Mersey) (GB112069061452)
2024 spills / hours
1 / 0.8
Long-term average
2.7 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Longford Brook Trib Ship Canal 0 0.0 down 100% 100%
Edge Lane/Manchester Road/High Lane
Overflow on sewer network
Company site name
Edge Lane/Manchester Road/High Lane
EA ID / permit
UUP00688 · 016982629
Outlet location
SJ8093693606 (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
2.8 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Trib Chorleton Brook via SWS 0 0.0 no change 100%
Duxbury Mill PS 12006 CHR0059
Storm discharge at pumping station
Company site name
Duxbury Mill Farm PS
EA ID / permit
UUP02190 · EPRSB3395VW
Outlet location
SD5881715661 (OS grid reference) · View on Apple Maps
WFD catchment
Yarrow US Big Lodge Water (GB112070064951)
2024 spills / hours
3 / 5.8
Long-term average
2.8 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Yarrow 0 0.0 down 100% 100%
Ribton Moorside CSO
Overflow on sewer network
Company site name
Ribton Moorside CSO
EA ID / permit
UUP01652 · 017480288
Outlet location
NX9854016890 (OS grid reference) · View on Apple Maps
WFD catchment
Solway Outer South (GB641211630003)
2024 spills / hours
1 / 0.3
Long-term average
2.9 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Culverted Sec of Snebra Beck 0 0.0 down 100% 99%
Sackville St Montague St CSO
Overflow on sewer network
Company site name
Sackville Street/Montague Street CSO
EA ID / permit
UUP01703 · 01PEN0023
Outlet location
SD8414036391 (OS grid reference) · View on Apple Maps
WFD catchment
Calder - Pendle Water to conf Ribble (GB112071065490)
2024 spills / hours
2 / 0.5
Long-term average
2.9 spills a year (monitored since 2018)
Monitor below 90%
Sensor failure / issue · Resolved - Mar
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Pendle Water via Culvert 0 0.0 down 100% 86%
Chiltern Avenue CSO
Overflow on sewer network
Company site name
Chiltern Avenue CSO
EA ID / permit
UUP00466 · 017280299
Outlet location
SD3414039350 (OS grid reference) · View on Apple Maps
WFD catchment
WYRE - transitional (GB531207212200)
Bathing water
Fleetwood
Shellfish water
Lune (Wyre Estuary)
2024 spills / hours
2 / 0.2
Long-term average
2.9 spills a year (monitored since 2017)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Horse Bridge Dyke (trib of Skipool Creek, trib of River Wyre Estuary) 0 0.0 down 100% 97%
Heywood Road CSO 091YZ
Overflow on sewer network
Company site name
Heywood Road CSO
EA ID / permit
UUP00952 · 016993905
Outlet location
SD8191003931 (OS grid reference) · View on Apple Maps
WFD catchment
Irwell (Croal to Irk) (GB112069061451)
2024 spills / hours
2 / 0.6
Long-term average
3.0 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Prestwich Clough via Clvrt 0 0.0 down 100% 100%
Hind Street CSO
Overflow on sewer network
Company site name
Hind Street CSO
EA ID / permit
UUP00970 · 016881946
Outlet location
SD7355009170 (OS grid reference) · View on Apple Maps
WFD catchment
Bradshaw Brook (GB112069064580)
2024 spills / hours
3 / 1.2
Long-term average
3.0 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Bradshaw Brook 0 0.0 down 100% 100%
John Lee Fold CSO
Overflow on sewer network
Company site name
John Lee Fold CSO
EA ID / permit
UUP01034 · 016982900
Outlet location
SD8737006200 (OS grid reference) · View on Apple Maps
WFD catchment
Irk (Sourtce to Wince Brook) (GB112069061161)
2024 spills / hours
2 / 0.9
Long-term average
3.0 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Whit Brook 0 0.0 down 100% 98%
Waterside Mill CSO 212ZY
Overflow on sewer network
Company site name
Waterside Mill CSO
EA ID / permit
UUP02054 · 01PEA0039
Outlet location
SK0193096510 (OS grid reference) · View on Apple Maps
WFD catchment
Etherow (Woodhead Res. to Glossop Bk.) (GB112069060780)
2024 spills / hours
0 / 0.0
Long-term average
3.1 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
River Etherow 0 0.0 no change 100%
Chain Bar Lane CSO
Overflow on sewer network
Company site name
Chain Bar Lane CSO
EA ID / permit
UUP00437 · 016993552
Outlet location
SJ9869094790 (OS grid reference) · View on Apple Maps
WFD catchment
Etherow (Glossop Brook to Goyt) (GB112069061050)
2024 spills / hours
1 / 2.5
Long-term average
3.2 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Hurst Clough Brook 0 0.0 down 100% 93%
188 Rating Lane CSO
Overflow on sewer network
Company site name
188 Rating Lane CSO
EA ID / permit
UUP00013 · 017480404
Outlet location
SD2194069330 (OS grid reference) · View on Apple Maps
WFD catchment
Mill Beck (Poaka Beck) (GB112074069790)
Bathing water
Walney West Shore
Shellfish water
Walney
2024 spills / hours
– / –
Long-term average
3.2 spills a year (monitored since 2017)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Mill Beck via Roose Bridge Outfall 0 0.0 100%
Queens Park No 2 CSO
Overflow on sewer network
Company site name
Queens Park Golf Club CSO
EA ID / permit
UUP01593 · 01CRE0032
Outlet location
SJ6847555406 (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
3.3 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Valley Brook via SWS 0 0.0 no change 97%
Stockport Rd West/Ashton Rd CSO
Overflow on sewer network
Company site name
Stockport Road West/Ashton Road CSO
EA ID / permit
UUP01862 · NPSWQD010908
Outlet location
SJ9182091700 (OS grid reference) · View on Apple Maps
WFD catchment
Goyt (Etherow to Mersey) (GB112069061000)
2024 spills / hours
1 / 0.5
Long-term average
3.4 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Crookilley Brook via SWS 0 0.0 down 100% 99%
Shaw Lane CSO 212Q4
Overflow on sewer network
Company site name
Shaw Lane CSO
EA ID / permit
UUP01747 · 016892342
Outlet location
SK0143094980 (OS grid reference) · View on Apple Maps
WFD catchment
Glossop Brook (Long Clough Brook to Etherow) (GB112069060720)
2024 spills / hours
1 / 2.5
Long-term average
3.7 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Glossop Brook 0 0.0 down 100% 100%
Maryland Lane CSO
Overflow on sewer network
Company site name
Maryland Lane CSO
EA ID / permit
UUP01259 · 016892463
Outlet location
SJ2477090370 (OS grid reference) · View on Apple Maps
WFD catchment
The Birket including Arrowe Brook and Fender (GB112068060530)
Bathing water
Moreton
Shellfish water
North Wirral (West)
2024 spills / hours
0 / 0.0
Long-term average
3.8 spills a year (monitored since 2018)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Arrowe Brook 0 0.0 no change 96%
Factory St/Charles St CSO
Overflow on sewer network
Company site name
Factory Street/Charles Street CSO, Leigh
EA ID / permit
UUP00712 · 016993530
Outlet location
SD6862002140 (OS grid reference) · View on Apple Maps
WFD catchment
Bedford Brook (GB112069060810)
2024 spills / hours
1 / 0.2
Long-term average
4.0 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
Operational improvement completed
Hindsford Brook 0 0.0 down 100% 92%
Rear of 34 Dinely Street CSO
Overflow on sewer network
Company site name
Rear of 34 DINELY STREET CSO
EA ID / permit
UUP01627 · 01HYN0023
Outlet location
SD7452028880 (OS grid reference) · View on Apple Maps
WFD catchment
Hyndburn (GB112071065040)
2024 spills / hours
4 / 1.3
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
River Hyndburn 0 0.0 down 100% 100%
Butler Street/Woodward Street CSO
Overflow on sewer network
Company site name
Butler Street/Woodward Street CSO
EA ID / permit
UUP00385 · 01MAN0038
Outlet location
SJ8597598466 (OS grid reference) · View on Apple Maps
WFD catchment
Medlock (Lumb Brook to Irwell) (GB112069061152)
2024 spills / hours
0 / 0.0
Long-term average
4.2 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%

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.