It's a Dirty Business

Watch Channel 4's documentary about the state of the water industry, then sign the petition to bring water back to public ownership.

Sefton Central - 2025 Sewage

Polluted by sewage 1,971 hours in 2025 , monitoring offline 7,679 hours , potential overflows 952 hours

© OpenStreetMap contributors
Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024

Which Year?

Select Another Constituency

Select the constituency from the drop-down
โœ” means we have live data (๐‘ฅ if not)

View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Sefton Central for 2025. It is an estimate, based on very poor quality live data from the Water Companies. This may not align with the 'official' reported sewage values from the water companies, which is reported in April following then end of the year - so 2025 numbers are reported in April 2026.

What's a potential overflow? If the CSO goes 'Offline' while its Overflowing, we don't know if it stopped overflowing until we get a 'Stop' event.

Take Action

Your local MP is Bill Esterson (Labour) - Find out more about their interests, donors, and voting at They Work For You

Share this page, post a message, and tell others about the huge problem of sewage pollution across the UK
Post
Post

Constituencies near Sefton Central

Daily Data

Jan - 678 hours , 9 potential
Feb - 16 hours , 0 offline
Mar - 25 hours , 1 potential
Apr - 16 hours , 202 offline
May - 41 hours , 0 potential
Jun - 90 hours , 0 potential
Jul - 43 hours , 1,322 offline
Aug - 1 hours , 760 offline
Sept - 187 hours , 5 potential
Oct - 172 hours , 40 potential
Nov - 395 hours , 720 potential
Dec - 301 hours , 174 potential
Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.
Please note: We don't have rainfall data for Wales. If you know where to source it please let us know!
We need your support!

Please consider a one-off or small recurring donation. We need your help to keep this site going.

Donate Now

Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
United Utilities Outside 49 St Andrews Road CSO River Mersey Estuary 74 381h 54m 14 h
United Utilities St Michaels Road/Manor Road CSO River Alt 60 283h 54m 1,762 h
United Utilities Opposite 53 Moor Lane (in roundabout) Combined Sewer Overflow (Site ID 382G6) (SEF0097) River Mersey Estuary 79 209h 44m 15 h
United Utilities FORMBY WwTW River Alt 22 190h 58m 4,683 h
United Utilities 51 Moor Lane CSO River Mersey Estuary 69 146h 28m 3 h
United Utilities Outside 49 St Andrews Road CSO River Mersey Estuary 16 128h 46m -
United Utilities St Michaels Road/Manor Road CSO River Alt 17 128h 30m -
United Utilities St Andrew's Road/St Michael's Road CSO Mersey Estuary 36 100h 44m 0 h
United Utilities College Road/Eshe Road River Mersey Estuary 30 68h 34m 1 h
United Utilities Thornton Pumping Station Thornton Hough, Clatter 10 59h 15m -
United Utilities Opposite 53 Moor Lane (in roundabout) Combined Sewer Overflow (Site ID 382G6) (SEF0097) River Mersey Estuary 17 56h 40m 2 h
United Utilities St Andrew's Road/St Michael's Road CSO Mersey Estuary 14 39h 48m -
United Utilities O/S XX Hall Road East CSO River Mersey Estuary 27 37h 16m 18 h
United Utilities 51 Moor Lane CSO River Mersey Estuary 13 27h 56m -
United Utilities MELLING WwTW River Alt 5 27h 31m -
United Utilities O/S 107 Liverpool Road in Footpath CSO River Mersey Estuary 15 25h 22m 1 h
United Utilities Thornton Pumping Station Thornton Hough, Clatter 2 18h 23m -
United Utilities College Road/Eshe Road River Mersey Estuary 6 13h 34m -
United Utilities O/S XX Hall Road East CSO River Mersey Estuary 5 5h 36m -
United Utilities O/S 16 Coronation Road River Mersey Estuary 6 4h 40m 0 h
United Utilities The Bypass / Liverpool Road Junction CSO River Mersey Estuary 6 4h 12m -
United Utilities Riverside Road pumping station (Site ID 38026) (SEF0083) River Alt Estuarine Waters 9 3h 17m 162 h
United Utilities Dibbs Lane CSO River Mersey Estuary 5 2h 58m 232 h
United Utilities Dooley Drive Combined Sewer Overflow (381N6) (SEF0065) ( Emergency Overflow for 38006 รขโ‚ฌโ€œ Copy Lane Pumping Station Moor Hey Brk River Alt 1 1h 52m 28 h
United Utilities O/S 107 Liverpool Road in Footpath CSO River Mersey Estuary 3 1h 46m -
United Utilities The Bypass / Liverpool Road Junction CSO River Mersey Estuary 1 0h 38m -
United Utilities O/S 16 Coronation Road River Mersey Estuary 1 0h 34m -
United Utilities Rear 23 Liverpool Road North CSO Maghull Brook 1 0h 14m -
United Utilities Riverside Road pumping station (Site ID 38026) (SEF0083) River Alt Estuarine Waters 3 0h 13m 176 h
United Utilities Dibbs Lane CSO River Mersey Estuary 2 0h 8m 0 h
United Utilities Dooley Drive Combined Sewer Overflow (381N6) (SEF0065) ( Emergency Overflow for 38006 รขโ‚ฌโ€œ Copy Lane Pumping Station Moor Hey Brk River Alt 0 0h -
United Utilities Dunning's Bridge Road, Junction Copy Lane CSO Moor Hey Brook 0 0h -
United Utilities Dunning's Bridge Road, Junction Copy Lane CSO Moor Hey Brook 0 0h -
United Utilities FORMBY WwTW River Alt 0 0h 1,526 h
United Utilities Rear 23 Liverpool Road North CSO Maghull Brook 0 0h -
United Utilities MELLING WwTW River Alt 0 0h -

Data Sources & Accuracy

EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales, and Scottish Water

Experimental derived data from Thames Water API, Some data may be missing or inaccurate. Live sewage data from Stream Water API

Uses Environment Agency rainfall data from the real-time data API (Beta) - Rainfall data is delayed by up to two days.

This website is intended to provide an accurate representation of the Environment Agency data. The data is hard to use, and thus some errors may have been made. If you find something that is incorrect, please raise an issue at the GitHub issues page and we'll endeavour to fix it quickly.

This project is not associated, approved or endorsed by any of the companies whose logos you see here.

Top of the Poops

Analysing sewage pollution by the Water Industry

Follow on Instagram

Media Queries

Get in touch if you have queries or want to discuss our data.

press [at] top-of-the-poops.org

Please Support Us

We rely on donations to fund our work. Please support us if you can
Yes! Support TOTP!

ยฉ 2020-2025 Top-Of-The-Poops CC-BY-SA 4.0,
ยฉ Openstreetmap contributors, Contains OS data ยฉ Crown copyright and database right 2021-2025,
Contains Water UK National Storm Overflow Hub Data CC-BY-SA 4.0 and analysis ยฉ 2025 Top-Of-The-Poops

Some data reproduced under Open Government Licence

Please don't scrape these pages - we can maybe share our data with you

Full Copyright information available at: our GitHub page