Stockport was polluted by sewage 624 times in 2024
lasting 1,532 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 Stockport in 2025
So far this year (as of Apr 16, 2025, 6:30 PM) there has been 738 hours of sewage overflows
Totals for Stockport in 2024
20 Sites polluted by United Utilities
624 sewage dumps
1,532 h duration
That's 2.13 months. On average 1.7 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 Stockport, 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 Stockport 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 25 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 Mersey STOCKPORT WWTW 105 589 98.9
United Utilities River Mersey HOPE STREET COMBINED SEWER OVERFLOW 90 244 100
United Utilities River Tame PENNY LANE GRIMESBOTTOM CSO 43122 31 118 99.9
United Utilities River Mersey TRAVIS BROW/GEORGES ROAD CSO 70 117 99.7
United Utilities River Mersey WELLINGTON ROAD SOUTH CSO 57 105 99.9
United Utilities River Mersey THE CIRCUIT CSO 432UT 56 86 99.5
United Utilities Clvrt Section Of River Mersey GREAT UNDERBANK CSO 43200 STK0039 34 54 100
United Utilities River Goyt NEWBRIDGE LANE CSO 23 50 92.6
United Utilities River Mersey PRINCES STREET CSO 52 41 99
United Utilities River Goyt AVENUE ST BREWERY ST CSO 19 37 99.1
United Utilities River Mersey HEATON MOOR CSO 431YX 13 23 78.5
United Utilities River Mersey Estuary Via Sws STOCKPORT RD ESSEX AVE CSO 432SK 17 23 99.6
United Utilities River Tame BRINNINGTON RISE CSO 431GD 6 10 93.6
United Utilities River Mersey CHESTERGATE CSO 431A3 8 9 99.2
United Utilities River Mersey BRIGHTON ROAD CSO 16 7 99.5
United Utilities River Goyt CARRINGTON RD/OFFERTON ST 10 4 87.8
United Utilities River Mersey 95/97 CRAIG ROAD HEATON MERSEY CSO 8 4 99.2
United Utilities River Mersey CHESTERGATE/KING STREET WEST CSO 4 1 98.6
United Utilities River Mersey BRINKSWAY BRIDGE/GVILLE STREET CSO 1 0 99.2
United Utilities River Mersey 103 BRINKSWAY/LARK HILL 4 0 58.7
United Utilities River Goyt NEWBRIDGE LANE CSO 0 0 99.3
United Utilities River Goyt Via Sws LANCASTER STREET CSO 432CD 0 0 93
United Utilities River Goyt NEWBRIDGE LN CROMER ST CSO 432HT 0 0 99.1
United Utilities River Goyt Via Sws JUNC STRINGER ST/NEW BRIDGE LN CSO 0 0 99.6
United Utilities River Goyt JUNC STRINGER ST/NEW BRIDGE LN CSO 0 0 96.2

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.