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Bolton West was polluted by sewage 1,176 times in 2023
lasting 4,740 hours
- but monitoring was disabled in some locations, so could be more

© OpenStreetMap contributors
Contains OS Data © Crown copyright & database right 2021-2023
© Top of the Poops 2021-2023
✔ means we have experimental daily data since 2023
Totals for Bolton West in 2023
21 Sites polluted by United Utilities
1,176 sewage dumps
4,740 h duration
That's 6.58 months. On average 3.2 times a day
Change Over Time
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Pollution Summary 2023

Here are all the reported sewage overflow totals for Bolton West in 2023. 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 2 of the total 25 CSO locations had reporting enabled for less than half the year, of which 2 had zero reporting.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
United Utilities Hall Lee Brook WESTHOUGHTON STW 214 1,850 99.9
United Utilities Astley Brook MOSS BANK WAY/CHIPPINGS W 146 827 98.5
United Utilities Pearl Brook HORWICH WASTEWATER TREATMENT WORKS 103 758 93.95
United Utilities River Ribble RIBCHESTER WWTW 20 243 90.75
United Utilities Astley Brook CHORLEY OLD ROAD SPS 105 213 100
United Utilities Middle Brook PARK HALL FARM CSO 071EY 81 156 100
United Utilities Unnamed River Douglas WOODBARN FARM CSO 07059 62 141 92.9
United Utilities Middle Brook LADYBRIDGE LANE CSO 43 80 100
United Utilities Bessy Brook Via Sws REGENT ROAD (BOLTON) CSO 58 78 100
United Utilities Dean Brook BROOK DEANS CLOSE CSO 38 56 100
United Utilities Captains Clough THOMPSON ROAD CSO 28 54 100
United Utilities Astley Brook ALBION TERRACE CSO 071BD 31 49 96.4
United Utilities Pearl Brook CHORLEY NEW ROAD SPS 41 46 99.3
United Utilities Culverted Cunningham Brk ASHGROVE/SOUTHFIELD DR CSO 43 43 95.4
United Utilities Middle Brook CHORLEY NEW ROAD CSO 071JS 49 40 100
United Utilities Middle Brook LADYBRIDGE LANE CSO 11 29 100
United Utilities Astley Brook GISBURN AVENUE CSO 071VO 27 28 100
United Utilities Unknown ST JOHNS RD 28 26 97.6
United Utilities Middle Brook JCT OF MANCHESTER RD/STATION RD CSO 19 7 100
United Utilities Middle Brook ALBERT ROAD CSO 28 6 100
United Utilities Middle Brook CHORLEY NEW RD TELFORD ST CSO 071JQ 1 0 91.5
United Utilities River Croal MANCHESTER RD/HOPE ST 0 0 0
United Utilities Astley Brook LIGHTBOUNDS RD LVAINE AVE CSO 072CO 0 0 97.9
United Utilities Middle Brook CHORLEY NEW/DEVONSHIRE ROAD CSO 0 0 0
United Utilities Dean Brook D/S 56 BARROW BRIDGE ROAD CSO 0 0 99.9

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.