Bolton West - 2025 Sewage

Polluted by sewage 6,134 hours in 2025

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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 Bolton West 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.

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Constituencies near Bolton West

Daily Data

We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Bolton West, here you can see overflows in red, the darker the red, the more the CSO overflowed that day.

Each CSO has a row, the most recent data is on the right hand side.

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Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Total Duration (days)
United Utilities Thompson Road Combined Sewer Overflow (Site ID 07055) (BOL0053) Captains Clough 155 3,491 h 6m 145.46
United Utilities WESTHOUGHTON WwTW Hall Lee Brook 62 494 h 20.58
United Utilities HORWICH WwTW Pearl Brook 37 408 h 28m 17
United Utilities WESTHOUGHTON WwTW Hall Lee Brook 20 219 h 34m 9.12
United Utilities CHORLEY NEW ROAD / DEVONSHIRE ROAD CSO Middle Brook 16 130 h 44m 5.42
United Utilities CHORLEY NEW ROAD / DEVONSHIRE ROAD CSO Middle Brook 33 123 h 57m 5.12
United Utilities HORWICH WwTW Pearl Brook 15 113 h 29m 4.71
United Utilities ALBION TERRACE CSO Astley Brook 18 105 h 22m 4.38
United Utilities Chorley Old Road/Chorley New Road CSO Astley Brook 57 101 h 4m 4.21
United Utilities WESTHOUGHTON WwTW Hall Lee Brook 36 100 h 33m 4.17
United Utilities ALBION TERRACE CSO Astley Brook 42 100 h 14m 4.17
United Utilities Wood Barn Farm CSO Unnamed River Douglas 37 70 h 43m 2.92
United Utilities Regent Road Bessy Brook Via Sws 26 68 h 40m 2.83
United Utilities PARK HALL FARM CSO Middle Brook 32 67 h 26m 2.79
United Utilities HORWICH WwTW Pearl Brook 10 63 h 16m 2.62
United Utilities Ladybridge Lane (Near Ladybridge Brow) CSO Middle Brook 18 57 h 8m 2.38
United Utilities HORWICH WwTW Pearl Brook 7 54 h 29m 2.25
United Utilities Harrisons Road Wagon & Horses CSO River Tame 29 45 h 44m 1.88
United Utilities Ash Grove/Southfield Drive CSO Culverted Cunningham Brk 18 43 h 30m 1.79
United Utilities Chorley New Road/Beaumont Road CSO Pearl Brook 19 34 h 52m 1.42
United Utilities Chorley Old Road/Chorley New Road CSO Astley Brook 13 33 h 10m 1.38
United Utilities WESTHOUGHTON WwTW Hall Lee Brook 7 30 h 10m 1.25
United Utilities PARK HALL FARM CSO Middle Brook 8 21 h 4m 0.88
United Utilities GISBURN AVENUE CSO Astley Brook 15 20 h 46m 0.83
United Utilities CHORLEY NEW ROAD CSO Middle Brook 13 20 h 35m 0.83
United Utilities Ladybridge Lane CSO Middle Brook 5 18 h 4m 0.75
United Utilities Chorley New Road/Beaumont Road CSO Pearl Brook 6 16 h 8m 0.67
United Utilities Wood Barn Farm CSO Unnamed River Douglas 7 13 h 37m 0.54
United Utilities Ladybridge Lane (Near Ladybridge Brow) CSO Middle Brook 4 12 h 28m 0.5
United Utilities St Johns Road CSO Middle Brook 2 10 h 58m 0.42
United Utilities Junction of Manchester/Station Road CSO Middle Brook 6 9 h 14m 0.38
United Utilities Regent Road Bessy Brook Via Sws 6 7 h 6m 0.29
United Utilities Moss Bank Way/Chippings Road CSO Astley Brook 2 6 h 24m 0.25
United Utilities Heaton Bridge CSO Middle Brook 7 5 h 56m 0.21
United Utilities Harrisons Road Wagon & Horses CSO River Tame 5 5 h 12m 0.21
United Utilities Manchester Road/Hope Street CSO River Croal 3 4 h 52m 0.17
United Utilities Ash Grove/Southfield Drive CSO Culverted Cunningham Brk 2 2 h 10m 0.08
United Utilities Downstream of No. 56 Barrow Bridge Road CSO Dean Brook 1 1 h 40m 0.04
United Utilities GISBURN AVENUE CSO Astley Brook 1 0 h 30m 0
United Utilities LIGHTBOUNDS ROAD / LOUVAINE AVENUE CSO Astley Brook 1 0 h 18m 0
United Utilities Junction of Manchester/Station Road CSO Middle Brook 1 0 h 6m 0
United Utilities CHORLEY NEW ROAD / TELFORD STREET CSO Middle Brook 1 0 h 4m 0
United Utilities Manchester Road/Hope Street CSO River Croal 0 0 h 0
United Utilities Brook Dean Close (Smithhills Dean Road) Combined Sewer Overflow Dean Brook 0 0 h 0
United Utilities CHORLEY NEW ROAD CSO Middle Brook 0 0 h 0
United Utilities Lostock Junction Lane CSO Bessy Brook 0 0 h 0
United Utilities Downstream of No. 56 Barrow Bridge Road CSO Dean Brook 0 0 h 0
United Utilities Thompson Road Combined Sewer Overflow (Site ID 07055) (BOL0053) Captains Clough 0 0 h 0
United Utilities Lostock Junction Lane CSO Bessy Brook 0 0 h 0
United Utilities Heaton Bridge CSO Middle Brook 0 0 h 0
United Utilities LIGHTBOUNDS ROAD / LOUVAINE AVENUE CSO Astley Brook 0 0 h 0
United Utilities Ladybridge Lane CSO Middle Brook 0 0 h 0
United Utilities St Johns Road CSO Middle Brook 0 0 h 0
United Utilities CHORLEY NEW ROAD / TELFORD STREET CSO Middle Brook 0 0 h 0
United Utilities Moss Bank Way/Chippings Road CSO Astley Brook 0 0 h 0
United Utilities Brook Dean Close (Smithhills Dean Road) Combined Sewer Overflow Dean Brook 0 0 h 0

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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© Openstreetmap contributors, Contains OS data © Crown copyright and database right 2021-2025,
Contains Water UK National Storm Overflow Hub Data CC-BY-SA 4.0 and analysis © 2025 Top-Of-The-Poops

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