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West Lancashire - 2025 Sewage

Polluted by sewage 2,316 hours in 2025 , monitoring offline 95 hours , potential overflows 673 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 West Lancashire 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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Daily Data

Jan - 888 hours , 4 potential
Feb - 14 hours
Mar - 4 hours , 129 potential
Apr - 10 hours , 176 potential
May - 22 hours
Jun - 40 hours
Jul - 8 hours , 42 offline
Aug - 1 hours , 38 offline
Sept - 253 hours , 0 potential
Oct - 130 hours
Nov - 478 hours , 1 potential
Dec - 463 hours , 336 potential
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
United Utilities Mill Lane CSO Dane-In-Shaw Brook 71 294h 15m -
United Utilities WIGAN (HOSCAR) WwTW River Douglas 19 287h 8m -
United Utilities WIGAN (HOSCAR) WwTW River Douglas 15 190h 33m -
United Utilities BARROW NOOK WwTW Simonswood Brook 53 184h 6m 6 h
United Utilities WESTHEAD WwTW Castle Brook 35 165h 9m -
United Utilities Orrell House Farm CSO Dean Brook Trid Of R Douglas 52 157h 30m -
United Utilities Mill Lane CSO Dane-In-Shaw Brook 18 145h 56m 0 h
United Utilities HILLHOUSE WwTW Hey Cop Drain, River Alt 19 125h 52m 0 h
United Utilities BARROW NOOK WwTW Simonswood Brook 17 115h 16m -
United Utilities BURSCOUGH WwTW Boathouse Sluice 10 105h 23m 360 h
United Utilities 194 Ormskirk Road River Tawd Via Sws 37 73h 45m -
United Utilities Dicket's Lane CSO (493DE) Eller Brook 21 72h 36m 7 h
United Utilities WESTHEAD WwTW Castle Brook 14 70h 58m -
United Utilities SKELMERSDALE WwTW River Douglas 8 51h 28m -
United Utilities SKELMERSDALE WwTW River Douglas 14 47h 23m -
United Utilities Bickerstaffe Wastewater PS Bickerstaffe Brook 8 46h 50m -
United Utilities Near Tawd Vale Inn River Tawd Via Sws 21 31h 18m -
United Utilities Orrell House Farm CSO Dean Brook Trid Of R Douglas 10 29h 2m -
United Utilities HILLHOUSE WwTW Hey Cop Drain, River Alt 9 27h 56m 361 h
United Utilities Opposite 36 Carr Lane CSO Sandy Brook 11 15h 28m -
United Utilities BURSCOUGH WwTW Boathouse Sluice 2 15h 7m -
United Utilities Outside 1 Teversham Three Pools Waterway 9 13h 56m 2 h
United Utilities 194 Ormskirk Road River Tawd Via Sws 6 13h 45m -
United Utilities Ormskirk Road , Skelmersdale River Tawd 7 6h 6m -
United Utilities SKELMERSDALE WwTW River Douglas 1 5h 18m -
United Utilities Opposite No.320 Liverpool Road CSO Sandy Brook 6 4h 30m -
United Utilities AINSDALE WwTW Fine Janes Brook 4 4h 0 h
United Utilities Derby Street CSO Eller Brook Via Sws 1 3h 16m 0 h
United Utilities Rear No.1 Hastings Road CSO Sandy Brook 6 2h 16m 0 h
United Utilities Bickerstaffe Wastewater PS Bickerstaffe Brook 1 1h 52m -
United Utilities O/s 65 Dover Road CSO Sandy Brook 5 1h 44m -
United Utilities AINSDALE WwTW Fine Janes Brook 2 1h 35m -
United Utilities Near Tawd Vale Inn River Tawd Via Sws 3 1h 14m -
United Utilities SKELMERSDALE WwTW River Douglas 2 1h 4m -
United Utilities Opposite No.7 Cromer Road CSO Sandy Brook 3 1h -
United Utilities Outside 1 Teversham Three Pools Waterway 1 0h 48m -
United Utilities Ormskirk Road , Skelmersdale River Tawd 3 0h 40m -
United Utilities Opposite 36 Carr Lane CSO Sandy Brook 1 0h 38m -
United Utilities Ainsdale WwTW Fine Janes Brook 1 0h 4m 27 h
United Utilities Unknown Unknown 0 0h -
United Utilities Rear No.1 Hastings Road CSO Sandy Brook 0 0h -
United Utilities Derby Street CSO Eller Brook Via Sws 0 0h -
United Utilities Dicket's Lane CSO (493DE) Eller Brook 0 0h 0 h
United Utilities Opposite No.7 Cromer Road CSO Sandy Brook 0 0h -
United Utilities Opposite No.320 Liverpool Road CSO Sandy Brook 0 0h -
United Utilities Ainsdale WwTW Fine Janes Brook 0 0h -
United Utilities O/s 65 Dover Road CSO Sandy Brook 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

Annual figures up to and including 2025 come from official water company returns. The 2026 figure is our own estimate, derived continuously from the companies' live data feeds.

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.