Bolton West was polluted by sewage 814 times in 2024
lasting 3,495 hours

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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 experimental daily data since 2023
Live data for Bolton West in 2025
So far this year (as of Apr 16, 2025, 6:30 PM) there has been 1,578 hours of sewage overflows
Totals for Bolton West in 2024
23 Sites polluted by United Utilities
814 sewage dumps
3,495 h duration
That's 4.85 months. On average 2.2 times a day
Change Over Time
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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.
     Monitoring Online      Monitoring Offline      Polluting      Potentially Polluting      Unknown
Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.

Pollution Summary 2024

Here are all the reported sewage overflow totals for Bolton West in 2024. Sometimes sewage can be being dumped for months at a time.

Reporting refers to how much of the time the monitoring was active. In this constituency 0 of the total 24 CSO locations had reporting enabled for less than half the year, of which 0 had zero reporting.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
United Utilities Hall Lee Brook WESTHOUGHTON STW 173 1,410 99.75
United Utilities Astley Brook MOSS BANK WAY/CHIPPINGS W 82 601 90.9
United Utilities Pearl Brook HORWICH WASTEWATER TREATMENT WORKS 67 586 91.7
United Utilities Unnamed River Douglas WOODBARN FARM CSO 07059 54 143 100
United Utilities Middle Brook LADYBRIDGE LANE CSO 27 96 89.9
United Utilities Middle Brook CHORLEY NEW/DEVONSHIRE ROAD CSO 52 86 64.2
United Utilities Middle Brook PARK HALL FARM CSO 071EY 44 84 97.2
United Utilities Bessy Brook Via Sws REGENT ROAD (BOLTON) CSO 45 74 97.5
United Utilities Dean Brook BROOK DEANS CLOSE CSO 42 59 99.5
United Utilities Astley Brook ALBION TERRACE CSO 071BD 26 53 97.6
United Utilities Captains Clough THOMPSON ROAD CSO 18 51 100
United Utilities Culverted Cunningham Brk ASHGROVE/SOUTHFIELD DR CSO 27 48 99.3
United Utilities Middle Brook CHORLEY NEW ROAD CSO 071JS 31 39 92.4
United Utilities River Ribble RIBCHESTER WWTW 10 36 98.15
United Utilities Pearl Brook CHORLEY NEW ROAD SPS 21 32 83.7
United Utilities Astley Brook GISBURN AVENUE CSO 071VO 22 32 99.4
United Utilities Middle Brook LADYBRIDGE LANE CSO 11 20 100
United Utilities Middle Brook JCT OF MANCHESTER RD/STATION RD CSO 19 9 94.7
United Utilities Unknown ST JOHNS RD 4 9 84.4
United Utilities Middle Brook ALBERT ROAD CSO 28 8 98.6
United Utilities River Croal MANCHESTER RD/HOPE ST 8 7 98.5
United Utilities Middle Brook CHORLEY NEW RD TELFORD ST CSO 071JQ 2 0 93.3
United Utilities Astley Brook LIGHTBOUNDS RD LVAINE AVE CSO 072CO 1 0 99
United Utilities Dean Brook D/S 56 BARROW BRIDGE ROAD CSO 0 0 99.8

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. This 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.