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Sefton Central - 2025 Sewage

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

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

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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.

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

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.

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