Ashton-under-Lyne - 2025 Sewage

Polluted by sewage 6,097 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 Ashton-under-Lyne 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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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
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Total Duration (days)
United Utilities 250 metres d/s Ashton Road (Bardsley PS) CSO River Medlock 80 1,757 h 3m 73.21
United Utilities DUKINFIELD WwTW River Tame 69 852 h 47m 35.5
United Utilities ASHTON-UNDER-LYNE WwTW River Tame 42 669 h 22m 27.88
United Utilities DUKINFIELD WwTW River Tame 38 317 h 26m 13.21
United Utilities DUKINFIELD WwTW River Tame 20 247 h 33m 10.29
United Utilities ASHTON-UNDER-LYNE WwTW River Tame 28 207 h 1m 8.62
United Utilities Clayton Bridge CSO River Medlock 38 175 h 16m 7.29
United Utilities Broomstair Road CSO River Tame 27 165 h 52m 6.88
United Utilities Turner Lane/Alexandra Road CSO River Tame 55 160 h 40m 6.67
United Utilities Wharf Street CSO River Mersey 46 151 h 24m 6.29
United Utilities ASHTON-UNDER-LYNE WwTW River Tame 13 138 h 16m 5.75
United Utilities ASHTON-UNDER-LYNE WwTW River Tame 15 101 h 51m 4.21
United Utilities Broadoak/Lyndhurst Avenue CSO Taunton 41 101 h 51m 4.21
United Utilities Lower Wharf Street/Scotland Street CSO River Tame 44 92 h 35m 3.83
United Utilities Pottinger Street/Oxford Street CSO River Tame 43 90 h 45m 3.75
United Utilities Newmarket Road PS Taunton Brook, Medlock 25 84 h 38m 3.5
United Utilities Chappell Road CSO Lumb Brook 39 80 h 50m 3.33
United Utilities Clayton Bridge CSO River Medlock 15 67 h 56m 2.79
United Utilities LOWER WHARF STREET CSO River Tame 45 67 h 6m 2.79
United Utilities Lumb Lane (Audenshaw) CSO and Detention Tank Carr Brook Via Sws 10 63 h 4m 2.62
United Utilities Broomstair Road CSO River Tame 13 57 h 38m 2.38
United Utilities Wharf Street CSO River Mersey 12 51 h 24m 2.12
United Utilities Turner Lane/Alexandra Road CSO River Tame 14 40 h 52m 1.67
United Utilities Edward Street (Dunkinfield) CSO River Tame Via Sws 25 35 h 42m 1.46
United Utilities Coal Pit Lane CSO Kebbs Brook, Riv Darwen 17 35 h 34m 1.46
United Utilities DUKINFIELD WwTW River Tame 10 35 h 3m 1.46
United Utilities LOWER WHARF STREET CSO River Tame 15 34 h 50m 1.42
United Utilities Broadoak/Lyndhurst Avenue CSO Taunton 9 31 h 29m 1.29
United Utilities Lower Wharf Street/Scotland Street CSO River Tame 8 26 h 26m 1.08
United Utilities Chappell Road CSO Lumb Brook 9 24 h 10m 1
United Utilities Gambrel Bank Road CSO Downshaw Brook 16 21 h 50m 0.88
United Utilities Newmarket Road PS Taunton Brook, Medlock 6 20 h 14m 0.83
United Utilities Pottinger Street/Oxford Street CSO River Tame 9 19 h 23m 0.79
United Utilities Lumb Lane (Audenshaw) CSO and Detention Tank Carr Brook Via Sws 1 10 h 16m 0.42
United Utilities Hathershaw Playing Field River Medlock 4 10 h 16m 0.42
United Utilities Medlock Sports Centre CSO Lumb Brook Via Surface Wtr Sew 4 9 h 55m 0.38
United Utilities Green Lane/Lyndhurst Avenue CSO Smallshaw Brook 6 7 h 58m 0.29
United Utilities Greenwood Avenue/Platt Avenue CSO Smallshaw Brook Via Sws 3 7 h 34m 0.29
United Utilities Coal Pit Lane CSO Kebbs Brook, Riv Darwen 2 7 h 22m 0.29
United Utilities Edward Street (Dunkinfield) CSO River Tame Via Sws 5 5 h 36m 0.21
United Utilities Dukinfield Outfall Sewer CSO River Tame 5 4 h 54m 0.17
United Utilities ASHTON OLD ROAD / MANSHAW STREET CSO Moss Brook 6 2 h 24m 0.08
United Utilities Gambrel Bank Road CSO Downshaw Brook 2 2 h 10m 0.08
United Utilities HARTSHEAD CLOSE / MANSHAW ROAD CSO Culverted Section Moss Brook 1 0 h 58m 0
United Utilities ASHTON OLD ROAD / MANSHAW STREET CSO Moss Brook 0 0 h 0
United Utilities Dukinfield Outfall Sewer CSO River Tame 0 0 h 0
United Utilities HUNTS BANK CSO River Irk 0 0 h 0
United Utilities HARTSHEAD CLOSE / MANSHAW ROAD CSO Culverted Section Moss Brook 0 0 h 0
United Utilities Hathershaw Playing Field River Medlock 0 0 h 0
United Utilities 250 metres d/s Ashton Road (Bardsley PS) CSO River Medlock 0 0 h 0
United Utilities HUNTS BANK CSO River Irk 0 0 h 0
United Utilities Medlock Sports Centre CSO Lumb Brook Via Surface Wtr Sew 0 0 h 0
United Utilities Argyll Street CSO Cock Brook 0 0 h 0
United Utilities Argyll Street CSO Cock Brook 0 0 h 0
United Utilities Greenwood Avenue/Platt Avenue CSO Smallshaw Brook Via Sws 0 0 h 0
United Utilities Green Lane/Lyndhurst Avenue CSO Smallshaw 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.