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Altrincham and Sale West - Live Sewage

Polluted by sewage 783 hours in 2026 , monitoring offline 445 hours , potential overflows 51 hours so far..

© OpenStreetMap contributors
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 Altrincham and Sale 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.

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Daily Data

Jan - 33 hours , 48 potential
Feb - 475 hours , 3 potential
Mar - 237 hours , 1 offline
Apr - 12 hours , 0 offline
May - 23 hours
Jun - 0 hours
Jul - 0 hours
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
United Utilities BOWDON WwTW River Bollin 34 482h 53m 490 h
United Utilities Pool Bank Farm, Bowdon CSO River Bollin 34 99h 32m -
United Utilities ALTRINCHAM WwTW Sinderland Brook 17 68h 33m 4 h
United Utilities DUNHAM MASSEY WwTW River Bollin 13 46h 49m -
United Utilities Dunham Massey Outfall SSO River Bollin Via Sws 16 38h 26m -
United Utilities Park Road/Arthog Road CSO River Bollin 16 22h 10m -
United Utilities Barrow Lane CSO River Bollin 11 11h 4m 1 h
United Utilities Golf Road PS Timperley Brook 6 6h 6m -
United Utilities Stamford New Road CSO Timperley Brook 6 3h 14m -
United Utilities Wellington Road CSO River Darwen 5 3h 13m -
United Utilities Oakfield Street CSO Timperley Brook 3 1h 44m 0 h
United Utilities Parkgate Farm Warburton CSO Manchester Ship Canal 1 0h 6m 1 h
United Utilities Balfour Road CSO Timperley Brook 0 0h -
United Utilities Chapel Lane CSO River Bollin 0 0h -
United Utilities Cecil Road/Ashley Road CSO River Bollin Via Sws 0 0h -
United Utilities Balfour Road CSO Timperley Brook 0 0h -
United Utilities Dunham Massey Outfall SSO River Bollin Via Sws 0 0h -
United Utilities Oakfield Street CSO Timperley Brook 0 0h -
United Utilities Chapel Lane CSO River Bollin 0 0h -
United Utilities Wellington Road CSO River Darwen 0 0h -
United Utilities DUNHAM MASSEY WwTW River Bollin 0 0h -
United Utilities Pool Bank Farm, Bowdon CSO River Bollin 0 0h -
United Utilities Golf Road PS Timperley Brook 0 0h -
United Utilities Parkgate Farm Warburton CSO Manchester Ship Canal 0 0h -
United Utilities Hawthorn Road CSO Timperley Brook 0 0h -
United Utilities Hawthorn Road CSO Timperley Brook 0 0h -
United Utilities Cecil Road/Ashley Road CSO River Bollin Via Sws 0 0h -
United Utilities Park Road/Arthog Road CSO River Bollin 0 0h -
United Utilities ALTRINCHAM WwTW Sinderland Brook 0 0h -
United Utilities BOWDON WwTW River Bollin 0 0h -
United Utilities Altrincham WwTW High Level Overflow (Formerly Woodcote Road CSO) Sinderland Brook 0 0h -
United Utilities Barrow Lane CSO River Bollin 0 0h -
United Utilities Altrincham WwTW High Level Overflow (Formerly Woodcote Road CSO) Sinderland Brook 0 0h -
United Utilities Stamford New Road CSO Timperley 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

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.