Blackley and Middleton South was polluted by sewage 797 times in 2024
lasting 1,635 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 Blackley and Middleton South in 2025
So far this year (as of Apr 16, 2025, 6:00 PM) there has been 511 hours of sewage overflows
Totals for Blackley and Middleton South in 2024
36 Sites polluted by United Utilities
797 sewage dumps
1,635 h duration
That's 2.27 months. On average 2.2 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 Blackley and Middleton South, 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 Blackley and Middleton South 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 43 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 Irk BOOTHROYDEN ROAD CSO 102 320 99.8
United Utilities River Irk MIDDLETON MAIN OUTFALL 71 212 99.9
United Utilities River Irk VICTORIA AVENUE/RIVER IRK CSO 14 131 99.5
United Utilities River Irk KENYON LANE CSO 33 131 99.1
United Utilities Wince Brook, River Irk KIRKWAY COMBINED SEWER OVERFLOW 55 130 100
United Utilities River Irk MIDDLETON OLD ROAD CSO 46 126 97.9
United Utilities River Irk MOSTON LANE/ROCHDALE ROAD CSO 42 113 98.9
United Utilities Boardman Brook MAINWAY/WORCESTER ROAD CSO 31 94 98.8
United Utilities River Irk WATERLOO ST CRESCENT RD CSO 62 85 98.9
United Utilities Wince Brook WHITLEY DRIVE CSO 43 57 100
United Utilities Culverted River Irk MILL BROW/BLACKLEY NEW ROAD CSO 33 41 95.3
United Utilities Culverted Section Moston Brook POTTERS LANE CSO 24 31 99.8
United Utilities River Irk SOUTH OF BLACKLEY NEW ROAD CSO 39 26 99
United Utilities River Irk CLEVELAND RD DELAUNAY RD CSO 288NJ 29 21 98.5
United Utilities Moss Brook QUEENS ROAD COMBINED SEWER OVERFLOW 19 16 100
United Utilities Wince Brook Via Sws MAINWAYEAST/LINCOLN ROAD CSO 16 14 99
United Utilities River Irk Via Sws CHUDDLEIGH ROAD CSO 19 13 99.9
United Utilities River Irk Via Birch Brook Clvr KENDALL ROAD BLACKLEY CSO 21 10 99.4
United Utilities River Irk SMEDLEY ROAD CSO 14 9 100
United Utilities A Culverted Section River Irk MILL BROW/BLACKLEY NEW ROAD CSO 13 9 99.3
United Utilities Boardman Brook MANCHESTER NEW ROAD CSO 8 5 98.8
United Utilities River Irk MIDDLETON ROAD/VICTORIA AVENUE CSO 5 5 99.2
United Utilities River Irk GLENBROOK RD EXTER RD CSO 281VU 12 4 98.8
United Utilities Moston Brook LATHBURY ROAD/SILCHESTER DRIVE CSO 7 4 99.3
United Utilities River Irk SOUTH OF BLACKLEY NEW ROAD CSO 8 3 100
United Utilities River Irk CLEVELAND RD DELAUNEYS RD CSO 281KK 8 3 98.5
United Utilities River Irk ROCHDALE RD/ALFRED ST CSO 6 2 86.3
United Utilities River Irk MANCHESTER OLD ROAD CSO 4 2 99.4
United Utilities Culverted Section Moston Brook QUEENS ROAD/SCORPTON STREET CSO 2 1 99.3
United Utilities River Irk CENTRAL AVENUE CSO 2 0 99
United Utilities Culverted Moston Brook MONSALL ROAD (J SEWER) CSO (282SF) 2 0 95.8
United Utilities River Irk QUEENS RD/HARDHAM VALE CSO 2 0 99.2
United Utilities Moston Brook ROCHDALE ROAD/EGGINGTON STREET CSO 2 0 99.3
United Utilities River Irk SOUTH OF BLACKLEY NEW ROAD CSO 1 0 97.4
United Utilities River Irk DEXTER RD HEATON PARK RD CSO 1 0 99.3
United Utilities River Irk KINGSBRIDGE ROAD CSO (289BQ) 1 0 66
United Utilities Moston Brook WINDSOR ROAD/WINTERDYNE STREET CSO 0 0 93.9
United Utilities River Irk Via Sws VICTORIA AVENUE/GLENBROOK CSO 0 0 99.4
United Utilities Boardman Brook MOSSWAY CSO 0 0 75.1
United Utilities Unnamed Watercourse BRENTFORD STREET CSO 0 0 99
United Utilities Moston Brook LATHBURY ROAD ADJ TO FOOTPATH CSO 0 0 99.1
United Utilities River Irk HENDHAM VALE CSO 0 0 99.1
United Utilities River Irk BURTON ST NR DALTON ST CSO 281HX 0 0 98.9

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.