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Pendle and Clitheroe - Live Sewage

Polluted by sewage 748 hours in 2026 , monitoring offline 154 hours , potential overflows 9 hours so far..

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

Which Year?

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✔ means we have live data (𝑥 if not)

View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Pendle and Clitheroe so far for 2026. It is an estimate, based on very poor quality live data from the Water Companies. The water companies report their sewage to the Environment Agency every year in April. You can see the last reported year in the other page

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 - 51 hours , 5 offline
Feb - 287 hours , 3 potential
Mar - 187 hours , 2 potential
Apr - 2 hours
May - 13 hours
Jun - 0 hours
Jul - 0 hours
Aug - 154 hours , 3 potential
Sept - 50 hours , 2 offline
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
United Utilities Chatburn (Ribble Lane) PS Chatburn Brook 28 179h 38m -
United Utilities Colne WwTW Colne Water 25 151h 23m 3 h
Yorkshire Water EARBY/STW Earby Beck 34 104h 51m -
United Utilities Fleet Street CSO Walverden Water 25 51h 18m -
United Utilities Netherfield Road CSO Walverden Water 18 41h 22m -
Yorkshire Water FOULRIDGE/CSO County Dyke 23 36h 37m -
United Utilities North West of Henthorn Road Bridge (EO for Lower Moor PS) Pendleton Brook 7 33h 22m -
United Utilities Longworth Road/Railway Viaduct CSO River Calder 15 25h 36m -
Yorkshire Water EARBY/STW Earby Beck 23 21h 59m -
United Utilities Clitheroe Street CSO Pendleton Brook 8 19h 14m -
United Utilities Lomeshaye Way CSO Pendle Water 9 16h 44m -
United Utilities BARNOLDSWICK WwTW Stock Beck 6 16h 24m 47 h
United Utilities Near Butts Beck Footpath CSO Butts Beck 5 12h 38m -
United Utilities Rear of 273 Regent Street CSO Swinden Clough 4 10h 46m -
United Utilities Colne Refuse Transfer Station CSO (Site ID 322YC) (PEN0059) Colne Water 8 9h 16m -
United Utilities Chapel House Road CSO Walverden Water 10 6h 36m -
United Utilities Hey Street CSO Hendon Brook 3 2h 16m -
United Utilities Simonstone Lane CSO River Calder 2 1h 40m -
United Utilities Oxford Road/Hollins Road CSO Swinden Clough 2 1h 38m 2 h
United Utilities Reedyford Road CSO Culvrtd Walverden Wtr 1 1h 18m -
United Utilities 11 NORTH PARK AVENUE CSO Pendle Water 2 1h 11m -
United Utilities Chapel House Road CSO(32014) (PEN0084) Walverden Water 1 0h 44m -
United Utilities Dam Head Bridge CSO Butts Beck 2 0h 38m 31 h
United Utilities Barrowford CSO Pendle Water 4 0h 20m 47 h
United Utilities Walverden Park CSO Walverden Water 1 0h 19m -
United Utilities Calf Hall Road CSO Calf Hall Beck 1 0h 14m -
United Utilities Laneshawbridge School Lane Combined Sewer Overflow Colne Water 1 0h 6m -
United Utilities CRAWFORD STREET (Nelson) CSO Walverden Water 1 0h 2m -
United Utilities Near Butts Beck Footpath CSO Butts Beck 0 0h -
United Utilities Calf Hall Road CSO Calf Hall Beck 0 0h -
United Utilities Chapel House Road CSO(32014) (PEN0084) Walverden Water 0 0h -
United Utilities Cornmill Cottages CSO Butts Beck 0 0h -
United Utilities Netherfield Road CSO Walverden Water 0 0h -
United Utilities Laneshawbridge School Lane Combined Sewer Overflow Colne Water 0 0h -
United Utilities EDWARD STREET CSO Swinden Clough 0 0h -
United Utilities Sabden CSO Sabden Brook 0 0h -
United Utilities Oxford Road/Hollins Road CSO Swinden Clough 0 0h -
United Utilities Barrowford CSO Pendle Water 0 0h -
United Utilities Dam Head Bridge CSO Butts Beck 0 0h -
United Utilities North West of Henthorn Road Bridge (EO for Lower Moor PS) Pendleton Brook 0 0h -
United Utilities Cornmill Cottages CSO Butts Beck 0 0h 31 h
United Utilities Clitheroe Street CSO Pendleton Brook 0 0h -
United Utilities Walverden Park CSO Walverden Water 0 0h -
United Utilities Lomeshaye Way CSO Pendle Water 0 0h -
United Utilities Hey Street CSO Hendon Brook 0 0h -
United Utilities Rear of 273 Regent Street CSO Swinden Clough 0 0h -
United Utilities Chapel House Road CSO Walverden Water 0 0h -
United Utilities ADJ POLICE STATION KING STREET CSO Pendleton Brook By Sws 0 0h -
United Utilities Reedyford Road CSO Culvrtd Walverden Wtr 0 0h -
United Utilities ADJ POLICE STATION KING STREET CSO Pendleton Brook By Sws 0 0h -
United Utilities Colne WwTW Colne Water 0 0h -
United Utilities Sabden CSO Sabden Brook 0 0h -
United Utilities Longworth Road/Railway Viaduct CSO River Calder 0 0h -
United Utilities Fleet Street CSO Walverden Water 0 0h -
United Utilities EDWARD STREET CSO Swinden Clough 0 0h -
United Utilities Colne Refuse Transfer Station CSO (Site ID 322YC) (PEN0059) Colne Water 0 0h -
United Utilities BRADLEY ROAD CSO Walverden Water 0 0h -
United Utilities Simonstone Lane CSO River Calder 0 0h -
United Utilities BARNOLDSWICK WwTW Stock Beck 0 0h -
United Utilities BRADLEY ROAD CSO Walverden Water 0 0h -
United Utilities Chatburn (Ribble Lane) PS Chatburn Brook 0 0h -
United Utilities 11 NORTH PARK AVENUE CSO Pendle Water 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.