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
Hey Street (Playground) CSO (32017)
Overflow on sewer network
Company site name
Hey Street CSO
EA ID / permit
UUP00949 · 017180621
Outlet location
SD8646038240 (OS grid reference) · View on Apple Maps
WFD catchment
Walverden Water (GB112071065130)
2024 spills / hours
5 / 9.2
Long-term average
12.6 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 10.0 hours spilling →
Hendon Brook 8 10.0 up 60% 94%
Cowlishaw CSO
Overflow on sewer network
Company site name
Cowlishaw CSO
EA ID / permit
UUP00554 · 016982851
Outlet location
SD9313008350 (OS grid reference) · View on Apple Maps
WFD catchment
Irk (Sourtce to Wince Brook) (GB112069061161)
2024 spills / hours
8 / 10
Long-term average
10.2 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 9.9 hours spilling →
Luzley Brook 4 9.9 down 50% 99%
Maple Avenue CSO
Overflow on sewer network
Company site name
Maple Avenue CSO
EA ID / permit
UUP01252 · 01BRY0086
Outlet location
SD8072004880 (OS grid reference) · View on Apple Maps
WFD catchment
Irwell (Croal to Irk) (GB112069061451)
2024 spills / hours
16 / 16
Long-term average
15.8 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 9.9 hours spilling →
Trib Bradley Brook Suf Wtr Sew 14 9.9 down 13% 100%
Wilmslow Park South CSO
Overflow on sewer network
Company site name
Wilmslow Park South Combined Sewer Overflow (Site ID 272YI) (MAC0047)
EA ID / permit
UUP02135 · 01MAC0047
Outlet location
SJ8529081251 (OS grid reference) · View on Apple Maps
WFD catchment
Bollin (Source to Dean) (GB112069061320)
2024 spills / hours
0 / 0.0
Long-term average
0.3 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 9.9 hours spilling →
River Bollin 2 9.9 up from 0 99%
Ellesmere Road CSO 481TI
Overflow on sewer network
Company site name
ELLESMERE ROAD CSO
EA ID / permit
UUP00699 · 01WAR0059
Outlet location
SJ6128086390 (OS grid reference) · View on Apple Maps
WFD catchment
Manchester Ship Canal (GB71210004)
2024 spills / hours
7 / 5.8
Long-term average
8.5 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 9.9 hours spilling →
Manchester Ship Canal 9 9.9 up 29% 100%
Langwood Brook CSO
Overflow on sewer network
Company site name
Langwood Brook CSO
EA ID / permit
UUP01112 · 016993533
Outlet location
SD7900022740 (OS grid reference) · View on Apple Maps
WFD catchment
Irwell (Cowpe Bk to Rossendale STW) (GB112069064641)
2024 spills / hours
10 / 13
Long-term average
15.7 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 9.9 hours spilling →
Clvrt'D Section Langwood Brook 6 9.9 down 40% 100%
Hough Lane Eagley Bridge CSO 073DL
Overflow on sewer network
Company site name
HOUGH LANE/EAGLEY BRIDGE CSO
EA ID / permit
UUP00995 · 01BOL0150
Outlet location
SD7192813122 (OS grid reference) · View on Apple Maps
WFD catchment
Eagley Brook (GB112069064570)
2024 spills / hours
21 / 39
Long-term average
32.7 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 9.8 hours spilling →
Eagley Brook 10 9.8 down 52% 100%
Lords Street/Fir Street CSO
Overflow on sewer network
Company site name
LORDS STREET / FIR STREET CSO
EA ID / permit
UUP01187 · 01SAL0049
Outlet location
SJ6992092520 (OS grid reference) · View on Apple Maps
WFD catchment
Glaze (GB112069061420)
2024 spills / hours
3 / 2.3
Long-term average
2.5 spills a year (monitored since 2024)
Monitor below 90%
Sensor failure / issue · Resolved - Nov
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 9.8 hours spilling →
River Glaze 2 9.8 down 33% 42%
Beech Road/Claude Raod CSO
Overflow on sewer network
Company site name
Beech Road/Claude Road CSO
EA ID / permit
UUP00212 · 016993509
Outlet location
SJ8192093240 (OS grid reference) · View on Apple Maps
WFD catchment
Chorlton Brook (Princess Parkway to Mersey) (GB112069061040)
2024 spills / hours
3 / 0.9
Long-term average
5.6 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 9.8 hours spilling →
Chorlton Brook 5 9.8 up 67% 99%
Linksview Estate CSO 091BC
Overflow on sewer network
Company site name
Linksview Estate CSO
EA ID / permit
UUP01151 · 01BRY0064
Outlet location
SD8101007570 (OS grid reference) · View on Apple Maps
WFD catchment
Roch (Spodden to Irwell) (GB112069064600)
2024 spills / hours
20 / 70
Long-term average
23.7 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 9.7 hours spilling →
Parr Brook 18 9.7 down 10% 98%
Hathershaw CSO
Overflow on sewer network
Company site name
Hathershaw Playing Field
EA ID / permit
UUP00913 · 016952063
Outlet location
SD9288001150 (OS grid reference) · View on Apple Maps
WFD catchment
Medlock (Source to Lumb Brook) (GB112069061151)
2024 spills / hours
1 / 2.5
Long-term average
7.0 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 9.7 hours spilling →
River Medlock 3 9.7 up 200% 94%
Broadhead Road CSO 051FX
Overflow on sewer network
Company site name
BROADHEAD ROAD CSO
EA ID / permit
UUP00332 · 01BBN0019
Outlet location
SD7433016820 (OS grid reference) · View on Apple Maps
WFD catchment
Bradshaw Brook (GB112069064580)
2024 spills / hours
15 / 30
Long-term average
19.3 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 9.7 hours spilling →
Trib Quarlton Brook 7 9.7 down 53% 96%
Chestergate CSO 431A3
Overflow on sewer network
Company site name
Chestergate CSO
EA ID / permit
UUP00462 · 01STK0110
Outlet location
SJ8926090300 (OS grid reference) · View on Apple Maps
WFD catchment
Mersey (upstream of Manchester Ship Canal) (GB112069061030)
2024 spills / hours
8 / 9.6
Long-term average
11.2 spills a year (monitored since 2018)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 9.7 hours spilling →
River Mersey 6 9.7 down 25% 100%
Finn Avenue Combined Sewer Overflow
Overflow on sewer network
Company site name
Finn Avenue CSO
EA ID / permit
UUP00734 · 01CAR0013
Outlet location
NY3926055620 (OS grid reference) · View on Apple Maps
WFD catchment
Caldew d/s Caldbeck (GB102076073880)
2024 spills / hours
5 / 11
Long-term average
12.8 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 9.7 hours spilling →
Dow Beck Culvert 7 9.7 up 40% 100%
Albert Road CSO
Overflow on sewer network
EA ID / permit
UUP00093 · 01BOL0095
Outlet location
SD7020008691 (OS grid reference) · View on Apple Maps
WFD catchment
Middle Brook (GB112069064540)
2024 spills / hours
28 / 9.0
Long-term average
38.7 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 9.7 hours spilling →
Middle Brook 25 9.7 down 11% 99%
Moor Road Eaves Green Rd CSO 122GB
Overflow on sewer network
Company site name
Moor Road/Eaves Green Road CSO
EA ID / permit
UUP01335 · 017081255
Outlet location
SD5683015941 (OS grid reference) · View on Apple Maps
WFD catchment
Yarrow DS Big Lodge Water (GB112070064952)
2024 spills / hours
52 / 28
Long-term average
65.3 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 9.7 hours spilling →
River Yarrow 23 9.7 down 56% 100%
Cann Bridge Street CSO 40042
Overflow on sewer network
Company site name
Cann Bridge Street CSO
EA ID / permit
UUP00400 · 017160142
Outlet location
SD5758027610 (OS grid reference) · View on Apple Maps
WFD catchment
Darwen - conf Roddlesworth to tidal (GB112071065300)
2024 spills / hours
30 / 29
Long-term average
73.6 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 9.7 hours spilling →
River Darwen 16 9.7 down 47% 99%
50 Bridge Lane Bramhall CSO
Overflow on sewer network
Company site name
50 Bridge Lane CSO
EA ID / permit
UUP00049 · 016982681
Outlet location
SJ8973086300 (OS grid reference) · View on Apple Maps
WFD catchment
Micker Brook (GB112069060940)
2024 spills / hours
3 / 3.2
Long-term average
5.4 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 9.6 hours spilling →
Lady Brook 5 9.6 up 67% 100%
42 Bridge Street CSO
Overflow on sewer network
Company site name
42 Bridge Street CSO
EA ID / permit
UUP00046 · 01WIG0054
Outlet location
SD6205004610 (OS grid reference) · View on Apple Maps
WFD catchment
Hey/Borsdane Brook (GB112069064520)
2024 spills / hours
2 / 11
Long-term average
2.0 spills a year (monitored since 2024)
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 9.6 hours spilling →
Borsdane Brook 2 9.6 no change 100%
Cart Lane Pumping Station
Storm discharge at pumping station
Company site name
Cart Lane (Grange) PS
EA ID / permit
UUP00415 · 017370129
Outlet location
SD4027076810 (OS grid reference) · View on Apple Maps
WFD catchment
KENT - transitional (GB531207312000)
Bathing water
Morecambe North; Morecambe South
Shellfish water
Morecambe Bay East
2024 spills / hours
9 / 13
Long-term average
12.5 spills a year (monitored since 2017)
Investigation
No investigation activity in reporting period
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 9.4 hours spilling →
Kent Channel (trib of Morecambe Bay) 3 9.4 down 67% 100%
Walker Street CSO
Overflow on sewer network
Company site name
Walker Street
EA ID / permit
UUP01798 · 016982611
Outlet location
SD7075009090 (OS grid reference) · View on Apple Maps
WFD catchment
Middle Brook (GB112069064540)
2024 spills / hours
9 / 8.4
Long-term average
9.2 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 9.4 hours spilling →
River Croal 7 9.4 down 22% 100%
Higher Bents Lane/Newlyn Dr CSO
Overflow on sewer network
Company site name
Higher Bents Lane/Newlyn Road CSO
EA ID / permit
UUP00964 · 01STK0008
Outlet location
SJ9236091120 (OS grid reference) · View on Apple Maps
WFD catchment
Goyt (Etherow to Mersey) (GB112069061000)
2024 spills / hours
4 / 4.7
Long-term average
7.4 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 9.3 hours spilling →
Bredbury Stream via SWS 7 9.3 up 75% 100%
Pennington Lane CSO
Overflow on sewer network
Company site name
Pennington Lane CSO
EA ID / permit
UUP01530 · EPRSB3399EK
Outlet location
SJ5619794898 (OS grid reference) · View on Apple Maps
WFD catchment
Sankey Brook (Rainford Brook to Mersey) (GB112069061200)
2024 spills / hours
6 / 14
Long-term average
56.4 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 9.3 hours spilling →
Sankey Brook 3 9.3 down 50% 100%
Oxford Road/Grosvenor Street CSO
Overflow on sewer network
Company site name
OXFORD ROAD / GROSVENOR STREET CSO
EA ID / permit
UUP01498 · 01MAN0189
Outlet location
SJ8415097461 (OS grid reference) · View on Apple Maps
WFD catchment
Medlock (Lumb Brook to Irwell) (GB112069061152)
2024 spills / hours
21 / 17
Long-term average
28.8 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 9.3 hours spilling →
River Medlock via SWS 13 9.3 down 38% 98%
Moss Lane Sandbach 138CF
Overflow on sewer network
Company site name
MOSS LANE CSO
EA ID / permit
UUP01349 · 01CON0049
Outlet location
SJ7329060960 (OS grid reference) · View on Apple Maps
WFD catchment
Trent and Mersey Canal (GB112068055420)
2024 spills / hours
40 / 545
Long-term average
84.7 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 9.3 hours spilling →
Trent and Mersey Canal 14 9.3 down 65% 99%
Thick Riggs CSO (022UY)
Overflow on sewer network
Company site name
THICK RIGGS CSO
EA ID / permit
UUP01927 · 01ALL0024
Outlet location
NY2508023860 (OS grid reference) · View on Apple Maps
WFD catchment
Derwent US Bassenthwaite Lake (GB112075073561)
2024 spills / hours
0 / 0.0
Long-term average
2.0 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 9.3 hours spilling →
River Derwent 6 9.3 up from 0 100%
Runcorn Road CSO
Overflow on sewer network
EA ID / permit
UUP01696 · 01HAL0057
Outlet location
SJ5658083671 (OS grid reference) · View on Apple Maps
WFD catchment
Keckwick Brook (GB112068060520)
2024 spills / hours
16 / 12
Long-term average
25.8 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 9.2 hours spilling →
Manchester Ship Canal via Chancellor Road SwPS 8 9.2 down 50% 100%
20 Adlington Road CSO
Overflow on sewer network
Company site name
20 Adlington Road CSO
EA ID / permit
UUP00017 · 016892094
Outlet location
SJ9306078000 (OS grid reference) · View on Apple Maps
WFD catchment
Dean (Bollington to Bollin) (GB112069061360)
2024 spills / hours
64 / 103
Long-term average
76.7 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 9.2 hours spilling →
River Dean 8 9.2 down 88% 99%
Beech Hill Lane CSO 50089
Overflow on sewer network
Company site name
Beech Hill Lane CSO
EA ID / permit
UUP00211 · 017081372
Outlet location
SD5630007360 (OS grid reference) · View on Apple Maps
WFD catchment
Douglas - Lower (GB112070064820)
2024 spills / hours
5 / 17
Long-term average
5.1 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 9.1 hours spilling →
Billy Pit Brook Lpool Canal 2 9.1 down 60% 100%
Pusey Dale PS
Storm discharge at pumping station
Company site name
Pusey Dale PS
EA ID / permit
UUP01739 · 016810294
Outlet location
SJ6950351668 (OS grid reference) · View on Apple Maps
WFD catchment
Wistaston Brook (GB112068055280)
2024 spills / hours
8 / 14
Long-term average
4.8 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 9.0 hours spilling →
Tributary of Wistaston Brook 4 9.0 down 50% 100%
Runcorn Town Hall CSO
Overflow on sewer network
Company site name
Runcorn Town Hall CSO
EA ID / permit
UUP01697 · 016881893
Outlet location
SJ5177082100 (OS grid reference) · View on Apple Maps
WFD catchment
Bridgewater Canal (GB71210001)
2024 spills / hours
3 / 3.7
Long-term average
3.2 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 9.0 hours spilling →
Willow Brook 4 9.0 up 33% 100%
Brooklands Road/Todmorden Road CSO
Overflow on sewer network
Company site name
BROOKLANDS ROAD / TODMORDEN ROAD CSO
EA ID / permit
UUP00347 · 01BUR0032
Outlet location
SD8476031310 (OS grid reference) · View on Apple Maps
WFD catchment
Calder - headwaters to conf Brun (GB112071065060)
2024 spills / hours
15 / 8.6
Long-term average
28.3 spills a year (monitored since 2020)
Investigation
Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 9.0 hours spilling →
Unnamed Trib of River Calder 6 9.0 down 60% 100%
Gosforth WwTW
Storm tank at sewage works
Sewage works
Gosforth
Company site name
GOSFORTH WwTW
EA ID / permit
UUP00818 · 017470040
Outlet location
NY0782002750 (OS grid reference) · View on Apple Maps
WFD catchment
Bleng (GB112074070090)
Bathing water
Seascale
2024 spills / hours
3 / 7.9
Long-term average
44.6 spills a year (monitored since 2018)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 9.0 hours spilling →
Hare Beck 2 9.0 down 33% 100%
Rooley Moor Rd W51
Overflow on sewer network
Company site name
Rooley Moor Road
EA ID / permit
UUP01685 · 01ROC0077
Outlet location
SD8792014450 (OS grid reference) · View on Apple Maps
WFD catchment
Spodden (GB112069064730)
2024 spills / hours
3 / 0.7
Long-term average
5.0 spills a year (monitored since 2024)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 8.9 hours spilling →
Trib Healey Dell 7 8.9 up 133% 91%
Havannah Street/ Redfern Ave CSO
Overflow on sewer network
Company site name
Havannah Street/Redfern Avenue Combined Sewer Overflow
EA ID / permit
UUP00915 · 016892194
Outlet location
SJ8678763891 (OS grid reference) · View on Apple Maps
WFD catchment
Dane (Cow Brook to Wheelock) (GB112068060190)
2024 spills / hours
16 / 9.4
Long-term average
17.3 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 8.9 hours spilling →
River Dane 14 8.9 down 13% 100%
Gate Street CSO
Overflow on sewer network
EA ID / permit
UUP00780 · 01BBN0031
Outlet location
SD6932028230 (OS grid reference) · View on Apple Maps
WFD catchment
Blakewater (GB112071065310)
2024 spills / hours
24 / 16
Long-term average
27.8 spills a year (monitored since 2021)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 8.9 hours spilling →
River Blakewater 12 8.9 down 50% 100%
Hammertonstreet/Stanley Street CSO
Overflow on sewer network
Company site name
Hammerton Street/Stanley Street CSO
EA ID / permit
UUP00891 · 01ROS0016
Outlet location
SD8669023560 (OS grid reference) · View on Apple Maps
WFD catchment
Irwell (Source to Whitewell Brook) (GB112069064660)
2024 spills / hours
13 / 23
Long-term average
11.0 spills a year (monitored since 2024)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 8.8 hours spilling →
River Irwell 9 8.8 down 31% 100%
Fern Bank CSO
Overflow on sewer network
EA ID / permit
UUP00725 · 01TAM0126
Outlet location
SJ9723097940 (OS grid reference) · View on Apple Maps
WFD catchment
Tame (Chew Brook to Swineshaw Brook) (GB112069061111)
2024 spills / hours
16 / 7.7
Long-term average
37.6 spills a year (monitored since 2021)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 8.8 hours spilling →
Stocks Brook 7 8.8 down 56% 100%
Newbridge Ln Cromer St CSO 432HT
Overflow on sewer network
Company site name
Newbridge Lane / Cromer Street CSO
EA ID / permit
UUP01386 · 016982658
Outlet location
SJ9046090780 (OS grid reference) · View on Apple Maps
WFD catchment
Goyt (Etherow to Mersey) (GB112069061000)
2024 spills / hours
0 / 0.0
Long-term average
0.9 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 8.7 hours spilling →
River Goyt 1 8.7 up from 0 100%
Springfield Road CSO
Overflow on sewer network
Company site name
Springfield Road CSO
EA ID / permit
UUP01806 · 01WIG0004
Outlet location
SD5624006711 (OS grid reference) · View on Apple Maps
WFD catchment
Douglas - Lower (GB112070064820)
2024 spills / hours
14 / 7.5
Long-term average
20.4 spills a year (monitored since 2021)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 8.6 hours spilling →
River Douglas via SWS 11 8.6 down 21% 100%
Wakeling Rd/Stockport Rd
Overflow on sewer network
Company site name
Wakeling/Stockport Road CSO
EA ID / permit
UUP02005 · 01TAM0070
Outlet location
SJ9223093880 (OS grid reference) · View on Apple Maps
WFD catchment
Tame (Swineshaw Brook to Mersey) (GB112069061112)
2024 spills / hours
7 / 7.0
Long-term average
7.0 spills a year (monitored since 2021)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 8.6 hours spilling →
Tributary of River Tame 1 8.6 down 86% 100%
Burnley Road Bacup CSO
Overflow on sewer network
Company site name
BURNLEY ROAD (BACUP) CSO
EA ID / permit
UUP00368 · 01ROS0034
Outlet location
SD8668023570 (OS grid reference) · View on Apple Maps
WFD catchment
Irwell (Source to Whitewell Brook) (GB112069064660)
2024 spills / hours
5 / 17
Long-term average
6.8 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 8.5 hours spilling →
River Irwell 1 8.5 down 80% 99%
Bramhall Ln Sth (No 221)
Overflow on sewer network
Company site name
Bramhall Lane South (No 221)
EA ID / permit
UUP00303 · 01STK0017
Outlet location
SJ8934086480 (OS grid reference) · View on Apple Maps
WFD catchment
Micker Brook (GB112069060940)
2024 spills / hours
3 / 2.6
Long-term average
7.0 spills a year (monitored since 2024)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 8.5 hours spilling →
Micker Brook 11 8.5 up 267% 90%
Lamplight Way PS
Storm discharge at pumping station
Company site name
Lamplight Way Pumping Station
EA ID / permit
UUP00085 · 016993416
Outlet location
SD8081001050 (OS grid reference) · View on Apple Maps
WFD catchment
Irwell (Croal to Irk) (GB112069061451)
2024 spills / hours
2 / 4.2
Long-term average
13.3 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 8.5 hours spilling →
River Irwell 1 8.5 down 50% 100%
Bridgegate Avenue Manhole 5800 CSO
Overflow on sewer network
Company site name
Bridgegate Avenue (manhole 5800) CSO
EA ID / permit
UUP00320 · 017480450
Outlet location
SD2194069333 (OS grid reference) · View on Apple Maps
WFD catchment
Mill Beck (Poaka Beck) (GB112074069790)
Bathing water
Walney Sandy Gap
Shellfish water
Walney; Roosebeck
2024 spills / hours
– / –
Long-term average
51.8 spills a year (monitored since 2019)
High-spill reason (company)
Data collection - Confirmed exceptional weather
Investigation
Env Act (SODRP) investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 8.5 hours spilling →
Mill Beck 35 8.5 99%
96 Collingwood Road CSO 121PB
Overflow on sewer network
Company site name
96 COLLINGWOOD ROAD CSO
EA ID / permit
UUP00065 · 01CHR0017
Outlet location
SD5750017000 (OS grid reference) · View on Apple Maps
WFD catchment
Yarrow DS Big Lodge Water (GB112070064952)
2024 spills / hours
18 / 9.5
Long-term average
19.4 spills a year (monitored since 2018)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 8.5 hours spilling →
Clvrted Trib River Chor 10 8.5 down 44% 100%
Winskill Pumping Station
Storm discharge at pumping station
Company site name
Winskill PS
EA ID / permit
UUP02148 · EPRFP3523XL
Outlet location
NY5756034680 (OS grid reference) · View on Apple Maps
WFD catchment
Briggle Beck (GB102076073800)
2024 spills / hours
5 / 13
Long-term average
4.5 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 8.4 hours spilling →
Briggle Beck 4 8.4 down 20% 100%
The Carrs Combined Sewer Overflow
Overflow on sewer network
Company site name
THE CARRS CSO
EA ID / permit
UUP01913 · 01MAC0044
Outlet location
SJ8420081700 (OS grid reference) · View on Apple Maps
WFD catchment
Bollin (Source to Dean) (GB112069061320)
2024 spills / hours
0 / 0.0
Long-term average
29.3 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 8.4 hours spilling →
River Bollin 2 8.4 up from 0 95%
Bankbottom Combined Sewer Overflow
Overflow on sewer network
Company site name
Bankbottom CSO
EA ID / permit
UUP00181 · 016892347
Outlet location
SK0218096550 (OS grid reference) · View on Apple Maps
WFD catchment
Etherow (Woodhead Res. to Glossop Bk.) (GB112069060780)
2024 spills / hours
3 / 3.0
Long-term average
4.2 spills a year (monitored since 2020)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 8.4 hours spilling →
Tributary of River Etherow 3 8.4 no change 100%
Langdale Road CSO 432KA
Overflow on sewer network
Company site name
Langdale Road CSO
EA ID / permit
UUP01106 · 01STK0015
Outlet location
SJ8905084710 (OS grid reference) · View on Apple Maps
WFD catchment
Micker Brook (GB112069060940)
2024 spills / hours
4 / 2.2
Long-term average
16.6 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 8.4 hours spilling →
Carr Brook 10 8.4 up 150% 99%

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.