Ashton-under-Lyne was polluted by sewage 843 times in 2024
lasting 3,807 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 Ashton-under-Lyne in 2025
So far this year (as of Apr 16, 2025, 6:00 PM) there has been 1,036 hours of sewage overflows
Totals for Ashton-under-Lyne in 2024
21 Sites polluted by Severn Trent Water, United Utilities
843 sewage dumps
3,807 h duration
That's 5.29 months. On average 2.3 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 Ashton-under-Lyne, 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 Ashton-under-Lyne 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 22 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 River Tame ASHTON-UNDER-LYNE STW 82 744 100
United Utilities River Tame DUKINFIELD WWTW 90 740 100
United Utilities Unknown CLAYTON BRIDGE 65 530 100
United Utilities River Tame TURNER LANE/ALEXANDRA ROAD 108 338 99.6
United Utilities River Tame BROOMSTAIR ROAD CSO 47 293 98.2
United Utilities River Tame WHARF STREET CSO 44184 59 217 100
United Utilities Taunton BROADOAK/LYDHURST AVE 71 170 98.5
United Utilities River Tame POTTINGER ST/OXFORD ST 60 166 100
United Utilities River Medlock 250M OF ASHTON ROAD BARDSLEY PS CSO 28 160 100
United Utilities River Tame LOWER WHARF STREET CSO 442EC 77 124 98.4
United Utilities Lumb Brook CHAPPELL ROAD CSO 47 110 100
United Utilities Taunton Brook, Medlock NEWMARKET RD PS 30 74 100
United Utilities Gore Brook LUMB LANE (AUDENSHAW) CSO & DET TNK 13 55 100
United Utilities River Tame Via Sws EDWARD STREET 17 23 99.4
United Utilities Moss Brook Via Sws MANSHAW ROAD CSO 5 15 100
United Utilities Downshaw Brook GAMBREL BANK ROAD CSO 441U7 15 14 99.1
United Utilities Lumb Brook Via Surface Wtr Sew MEDLOCK SPORTS CENTRE CSO 8 8 100
United Utilities Smallshaw Brook GREEN LANE LYNDHURST AVE CSO 8 7 99.2
United Utilities River Tame DUKINFIELD OUTFALL SEWER CSO 441SM 8 6 99.5
United Utilities Smallshaw Brook Via Sws GREENWOOD AVE PLATT AVE CSO 441XE 4 4 98.7
Severn Trent Water Smestow Brook Via Sws PARK CRESCENT CSO 1 0 100
United Utilities Cock Brook ARGYL STREET 0 0 80.5

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.