Bolton West - Live Sewage

Polluted by sewage 1,201 hours in 2026 , monitoring offline 688 hours , potential overflows 6 hours so far..

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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 Bolton West 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 Bolton West in 2026

Sewage1,201 hours
Monitoring offline688 hours
Potential pollution6 hours
Storm overflows56

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Daily Data

Jan - 78 hours , 0 potential
Feb - 370 hours , 50 offline
Mar - 80 hours , 308 offline
Apr - 25 hours , 288 offline
May - 31 hours , 18 offline
Jun - 0 hours
Jul - 0 hours
Aug - 108 hours , 1 potential
Sept - 143 hours , 0 offline
Oct - 362 hours , 5 potential
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
United Utilities WESTHOUGHTON WwTW Hall Lee Brook 61 407h 30m 21 h
United Utilities CHORLEY NEW ROAD / DEVONSHIRE ROAD CSO Middle Brook 57 216h 14m 0 h
United Utilities ALBION TERRACE CSO Astley Brook 34 106h 44m -
United Utilities HORWICH WwTW Pearl Brook 18 78h 27m -
United Utilities Chorley Old Road/Chorley New Road CSO Astley Brook 52 72h 36m -
United Utilities HORWICH WwTW Pearl Brook 10 67h 29m 0 h
United Utilities WESTHOUGHTON WwTW Hall Lee Brook 24 45h 16m -
United Utilities PARK HALL FARM CSO Middle Brook 23 37h 28m 58 h
United Utilities Wood Barn Farm CSO Unnamed River Douglas 35 35h 52m 0 h
United Utilities Regent Road Bessy Brook Via Sws 14 25h 32m -
United Utilities Harrisons Road Wagon & Horses CSO River Tame 27 24h 16m -
United Utilities Ladybridge Lane (Near Ladybridge Brow) CSO Middle Brook 14 23h 2m 2 h
United Utilities Brook Dean Close (Smithhills Dean Road) Combined Sewer Overflow Dean Brook 10 13h 2m -
United Utilities Chorley New Road/Beaumont Road CSO Pearl Brook 8 11h 20m -
United Utilities Ash Grove/Southfield Drive CSO Culverted Cunningham Brk 7 10h 6m -
United Utilities Moss Bank Way/Chippings Road CSO Astley Brook 7 9h 54m -
United Utilities GISBURN AVENUE CSO Astley Brook 7 7h 18m -
United Utilities CHORLEY NEW ROAD CSO Middle Brook 9 4h 38m -
United Utilities Ladybridge Lane CSO Middle Brook 1 1h 29m 0 h
United Utilities Thompson Road Combined Sewer Overflow (Site ID 07055) (BOL0053) Captains Clough 2 1h 21m 607 h
United Utilities Heaton Bridge CSO Middle Brook 4 0h 30m 0 h
United Utilities Manchester Road/Hope Street CSO River Croal 3 0h 20m -
United Utilities LIGHTBOUNDS ROAD / LOUVAINE AVENUE CSO Astley Brook 2 0h 18m 0 h
United Utilities CHORLEY NEW ROAD / TELFORD STREET CSO Middle Brook 2 0h 18m -
United Utilities Junction of Manchester/Station Road CSO Middle Brook 1 0h 4m -
United Utilities Chorley Old Road/Chorley New Road CSO Astley Brook 0 0h -
United Utilities Manchester Road/Hope Street CSO River Croal 0 0h -
United Utilities CHORLEY NEW ROAD / TELFORD STREET CSO Middle Brook 0 0h -
United Utilities Junction of Manchester/Station Road CSO Middle Brook 0 0h -
United Utilities Ladybridge Lane CSO Middle Brook 0 0h -
United Utilities Regent Road Bessy Brook Via Sws 0 0h -
United Utilities WESTHOUGHTON WwTW Hall Lee Brook 0 0h -
United Utilities ALBION TERRACE CSO Astley Brook 0 0h -
United Utilities HORWICH WwTW Pearl Brook 0 0h -
United Utilities Lostock Junction Lane CSO Bessy Brook 0 0h -
United Utilities CHORLEY NEW ROAD / DEVONSHIRE ROAD CSO Middle Brook 0 0h -
United Utilities Wood Barn Farm CSO Unnamed River Douglas 0 0h -
United Utilities LIGHTBOUNDS ROAD / LOUVAINE AVENUE CSO Astley Brook 0 0h -
United Utilities HORWICH WwTW Pearl Brook 0 0h -
United Utilities CHORLEY NEW ROAD CSO Middle Brook 0 0h -
United Utilities GISBURN AVENUE CSO Astley Brook 0 0h -
United Utilities Downstream of No. 56 Barrow Bridge Road CSO Dean Brook 0 0h -
United Utilities Heaton Bridge CSO Middle Brook 0 0h -
United Utilities Ash Grove/Southfield Drive CSO Culverted Cunningham Brk 0 0h -
United Utilities Moss Bank Way/Chippings Road CSO Astley Brook 0 0h -
United Utilities Thompson Road Combined Sewer Overflow (Site ID 07055) (BOL0053) Captains Clough 0 0h -
United Utilities Harrisons Road Wagon & Horses CSO River Tame 0 0h -
United Utilities Brook Dean Close (Smithhills Dean Road) Combined Sewer Overflow Dean Brook 0 0h -
United Utilities PARK HALL FARM CSO Middle Brook 0 0h -
United Utilities St Johns Road CSO Middle Brook 0 0h -
United Utilities Lostock Junction Lane CSO Bessy Brook 0 0h -
United Utilities St Johns Road CSO Middle Brook 0 0h -
United Utilities Chorley New Road/Beaumont Road CSO Pearl Brook 0 0h -
United Utilities Downstream of No. 56 Barrow Bridge Road CSO Dean Brook 0 0h -
United Utilities WESTHOUGHTON WwTW Hall Lee Brook 0 0h -
United Utilities Ladybridge Lane (Near Ladybridge Brow) CSO Middle 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.