Blackburn - Live Sewage

Polluted by sewage 924 hours in 2026 , monitoring offline 36 hours , potential overflows 143 hours so far..

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

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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 Blackburn 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.

Totals for Blackburn in 2026

Sewage924 hours
Monitoring offline36 hours
Potential pollution143 hours
Storm overflows88

Take Action

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Daily Data

Jan - 105 hours , 3 potential
Feb - 131 hours , 0 potential
Mar - 254 hours , 133 potential
Apr - 5 hours , 2 offline
May - 21 hours , 0 offline
Jun - 0 hours
Jul - 0 hours
Aug - 67 hours , 1 potential
Sept - 145 hours , 2 potential
Oct - 193 hours , 3 potential
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
United Utilities SHARPLES STREET CSO River Darwen 88 222h 49m 15 h
United Utilities Bolton Road CSO River Darwen 24 109h 57m 24 h
United Utilities PHILLIPS ROAD CSO River Blakewater V Sws 56 102h 21m 1 h
United Utilities Aqueduct Road CSO River Darwen 22 92h 5m -
United Utilities Philips Road CSO River Blakewater 18 72h 30m -
United Utilities Appleby Street CSO River Blakewater 36 50h 30m -
United Utilities Thwaites Brewery Yard CSO River Blakewater 27 49h 40m -
United Utilities Witton Tanks CSO River Blakewater 24 37h 42m -
United Utilities Accrington Road CSO Clvrt'D Section Knuzden Brook 24 32h 46m -
United Utilities Lower Audley Street CSO River Blakewater 26 30h 50m -
United Utilities Addison Close CSO River Blakewater 29 26h 38m -
United Utilities Great Bolton Street CSO River Blakewater 3 26h 16m 24 h
United Utilities WHALLEY OLD ROAD / PROVIDENCE STREET CSO Little Harwood Brook 19 13h 4m -
United Utilities Dickens Street CSO Queens Park Culvert 7 11h 52m -
United Utilities Queens Park Road CSO Queens Park Culvert 12 11h 8m -
United Utilities Gorse Street CSO River Darwen 11 9h 108 h
United Utilities Dukes Brow Combined Sewer Overflow (Site ID 051SL) (BBN0069) River Blakewater 14 6h 20m -
United Utilities Cherry Tree/Feniscowles CSO River Darwen 13 6h 16m -
United Utilities Cumberland Street CSO Queens Park Culvert Via Sws 11 5h 54m -
United Utilities Rolleston Road CSO Norbury 7 3h 34m -
United Utilities New Mill Street CSO River Blakewater 3 1h 34m -
United Utilities VICTORIA STREET CSO River Blakewater 6 1h 30m -
United Utilities Beechwood Road CSO River Blakewater 3 0h 10m -
United Utilities NOTRE DAME GARDENS CSO River Blakewater 1 0h 6m 2 h
United Utilities APPLE STREET CSO River Blakewater 1 0h 2m -
United Utilities Dickens Street CSO Queens Park Culvert 0 0h -
United Utilities WHALLEY NEW ROAD CSO River Blakewater 0 0h 0 h
United Utilities PRINGLE STREET CSO River Blakewater 0 0h -
United Utilities Dukes Brow Combined Sewer Overflow (Site ID 051SL) (BBN0069) River Blakewater 0 0h -
United Utilities Addison Close CSO River Blakewater 0 0h -
United Utilities Cumberland Street CSO Queens Park Culvert Via Sws 0 0h -
United Utilities Accrington Road CSO Clvrt'D Section Knuzden Brook 0 0h -
United Utilities WELLINGTON ROAD CSO River Darwen 0 0h -
United Utilities PRINGLE STREET CSO River Blakewater 0 0h -
United Utilities WELLINGTON ROAD CSO River Darwen 0 0h -
United Utilities Beechwood Road CSO River Blakewater 0 0h -
United Utilities Back Queen's Park Road CSO Culvert Pringle St 0 0h -
United Utilities MANOR ROAD CSO River Blakewater 0 0h -
United Utilities Whalley Range/Westley Street CSO River Blakewater 0 0h -
United Utilities Grimshaw Park CSO River Blakewater 0 0h 2 h
United Utilities Preston Old Road CSO River Blakewater 0 0h -
United Utilities SHARPLES STREET CSO River Darwen 0 0h -
United Utilities Gorse Street CSO River Darwen 0 0h -
United Utilities VICTORIA STREET CSO River Blakewater 0 0h -
United Utilities Philips Road CSO River Blakewater 0 0h -
United Utilities WHALLEY RANGE / MILLHAM STREET CSO River Blakewater Via Sws 0 0h -
United Utilities Ramsgreave Drive CSO River Blakewater 0 0h -
United Utilities MANOR ROAD CSO River Blakewater 0 0h -
United Utilities Fielden Street CSO River Blakewater 0 0h -
United Utilities Merchants Landing (Culvert Street) CSO Culvert Culvert St 0 0h -
United Utilities GATE STREET CSO River Blakewater 0 0h -
United Utilities GATE STREET CSO River Blakewater 0 0h -
United Utilities Appleby Street CSO River Blakewater 0 0h -
United Utilities Merchants Landing (Culvert Street) CSO Culvert Culvert St 0 0h -
United Utilities Lower Audley Street CSO River Blakewater 0 0h -
United Utilities Whalley Range/Westley Street CSO River Blakewater 0 0h -
United Utilities NOTRE DAME GARDENS CSO River Blakewater 0 0h -
United Utilities 293 PRESTON OLD ROAD CSO River Darwen 0 0h 1 h
United Utilities Whalley Range CSO River Blakewater 0 0h -
United Utilities BROWNHILL DRIVE CSO River Blakewater 0 0h -
United Utilities Revidge Road/Preston New Road Arley Brook 0 0h -
United Utilities Ramsgreave Drive CSO River Blakewater 0 0h -
United Utilities Revidge Road/Preston New Road Arley Brook 0 0h -
United Utilities Grimshaw Park CSO River Blakewater 0 0h -
United Utilities Cherry Tree/Feniscowles CSO River Darwen 0 0h -
United Utilities APPLE STREET CSO River Blakewater 0 0h -
United Utilities WHALLEY RANGE / MILLHAM STREET CSO River Blakewater Via Sws 0 0h -
United Utilities Back Queen's Park Road CSO Culvert Pringle St 0 0h -
United Utilities Rolleston Road CSO Norbury 0 0h -
United Utilities BROWNHILL DRIVE CSO River Blakewater 0 0h -
United Utilities DAISY LANE CSO River Blakewater 0 0h -
United Utilities 293 PRESTON OLD ROAD CSO River Darwen 0 0h -
United Utilities Witton Tanks CSO River Blakewater 0 0h -
United Utilities Whalley Range CSO River Blakewater 0 0h -
United Utilities Thwaites Brewery Yard CSO River Blakewater 0 0h -
United Utilities PHILLIPS ROAD CSO River Blakewater V Sws 0 0h -
United Utilities Queens Park Road CSO Queens Park Culvert 0 0h -
United Utilities Fielden Street CSO River Blakewater 0 0h -
United Utilities WHALLEY OLD ROAD / PROVIDENCE STREET CSO Little Harwood Brook 0 0h -
United Utilities Preston Old Road CSO River Blakewater 0 0h -
United Utilities Bolton Road CSO River Darwen 0 0h -
United Utilities Lark Hill/Brook House Lane CSO River Blakewater 0 0h -
United Utilities Infirmary Street CSO Leeds/Liverpool Canal 0 0h -
United Utilities New Mill Street CSO River Blakewater 0 0h -
United Utilities Lark Hill/Brook House Lane CSO River Blakewater 0 0h -
United Utilities WHALLEY NEW ROAD CSO River Blakewater 0 0h -
United Utilities DAISY LANE CSO River Blakewater 0 0h 0 h
United Utilities Aqueduct Road CSO River Darwen 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.