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Blackley and Middleton South - 2025 Sewage

Polluted by sewage 1,549 hours in 2025 , monitoring offline 9,313 hours , potential overflows 97 hours

© OpenStreetMap contributors
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 Blackley and Middleton South 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.

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 - 434 hours , 5 potential
Feb - 43 hours , 672 offline
Mar - 31 hours , 0 potential
Apr - 3 hours , 33 offline
May - 41 hours , 238 offline
Jun - 86 hours , 3 offline
Jul - 45 hours , 120 offline
Aug - 14 hours , 872 offline
Sept - 255 hours , 0 potential
Oct - 136 hours , 89 potential
Nov - 187 hours , 2 potential
Dec - 269 hours , 1,567 offline
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
United Utilities Rochdale Road/Collyhurst CSO River Irk 74 296h 22m 0 h
United Utilities Moston Lane/Rochdale Road CSO River Irk 53 187h 52m -
United Utilities Boothroyden Road CSO River Irk 58 185h 51m 0 h
United Utilities Rochdale Road/Collyhurst CSO River Irk 21 130h 10m 1 h
United Utilities MIDDLETON MAIN OUTFALL CSO River Irk 44 114h 30m -
United Utilities Mainway/Worcester Road CSO Boardman Brook 21 84h 6m 23 h
United Utilities Boothroyden Road CSO River Irk 16 80h 55m -
United Utilities Middleton Old Road CSO (Site ID - 28064/28CSO143) River Irk 31 76h 34m -
United Utilities MIDDLETON MAIN OUTFALL CSO River Irk 13 43h 50m -
United Utilities Whiteley Drive CSO Wince Brook 23 41h 6m 951 h
United Utilities Mainway/Worcester Road CSO Boardman Brook 6 32h 50m -
United Utilities Middleton Old Road CSO (Site ID - 28064/28CSO143) River Irk 7 26h 14m -
United Utilities Cleveland/Delauney's Road CSO River Irk 26 25h 58m 90 h
United Utilities Mill Brow/Blackley Road CSO Culverted River Irk 20 25h 34m 1 h
United Utilities Moston Lane/Rochdale Road CSO River Irk 6 21h 52m -
United Utilities BLACKLEY NEW ROAD CSO River Irk 17 18h 24m 935 h
United Utilities POTTERS LANE CSO Culverted Section Moston Brook 14 17h 53m 0 h
United Utilities Greengate CSO Wince Brook 14 17h 46m 0 h
United Utilities MIDDLETON ROAD / VICTORIA AVENUE CSO River Irk 5 16h 6m 3 h
United Utilities Smedley Road CSO River Irk 9 11h 37m -
United Utilities QUEENS ROAD CSO Moss Brook 13 10h 24m 0 h
United Utilities VICTORIA AVENUE/RIVER IRK CSO River Irk 5 10h 14m -
United Utilities Kendall Road (Blackley) Combined Sewer Overflow River Irk Via Birch Brook Clvr 3 10h 4m 6 h
United Utilities Rochdale/Collyhurst Road CSO Culv'Ted Section Of Moss Brook 11 7h 44m 0 h
United Utilities Mill Brow/Blackley New Road CSO A Culverted Section River Irk 4 7h 32m 0 h
United Utilities Chudleigh Road CSO River Irk Via Sws 9 6h 55m 2 h
United Utilities Queens Road/Hendham Vale CSO Culverted Section Moston Brook 3 5h 42m -
United Utilities Mill Brow/Blackley Road CSO Culverted River Irk 7 5h 14m -
United Utilities LATHBURY ROAD / SILCHESTER DRIVE CSO Moston Brook 8 4h 42m -
United Utilities Manchester New Road Combined Sewer Overflow Boardman Brook 7 4h 2m -
United Utilities Blackley New Road CSO River Irk 4 3h 38m -
United Utilities Waterloo Street/Crescent Road CSO River Irk 7 3h 24m 0 h
United Utilities Mainway/Lincoln Road Combined Sewer Overflow Wince Brook Via Sws 5 3h 14m 28 h
United Utilities Rochdale/Collyhurst Road CSO Culv'Ted Section Of Moss Brook 1 1h 52m 0 h
United Utilities Cleveland Road/Delaunays CSO River Irk 5 1h 30m -
United Utilities Manchester Old Road CSO River Irk 4 1h 30m 0 h
United Utilities Glenbrook Road/Dexter Road CSO River Irk 6 1h 6m 0 h
United Utilities Central Avenue CSO River Irk 1 0h 48m 1,811 h
United Utilities Waterloo Street/Crescent Road CSO River Irk 1 0h 48m -
United Utilities Burton Street near Dalton Street CSO River Irk 2 0h 30m -
United Utilities POTTERS LANE CSO Culverted Section Moston Brook 1 0h 30m 0 h
United Utilities Victoria Avenue/Glenbrook CSO River Irk Via Sws 2 0h 28m 0 h
United Utilities Victoria Avenue/Glenbrook CSO River Irk Via Sws 1 0h 26m -
United Utilities Queens Road/Scorpton Street CSO Culverted Section Moston Brook 1 0h 20m -
United Utilities Greengate CSO Wince Brook 1 0h 16m -
United Utilities Rochdale Road/Alfreton Street CSO River Irk 2 0h 14m 2 h
United Utilities QUEENS ROAD CSO Moss Brook 1 0h 14m -
United Utilities MONSALL ROAD (J SEWER) CSO Culverted Moston Brook 1 0h 14m 0 h
United Utilities Cleveland/Delauney's Road CSO River Irk 2 0h 12m -
United Utilities ROCHDALE ROAD / EGGINGTON STREET CSO Moston Brook 1 0h 12m -
United Utilities Dexter Road/Heaton Park Road CSO River Irk 1 0h 8m 3 h
United Utilities Kingsbridge Road CSO River Irk 1 0h 2m 237 h
United Utilities LATHBURY ROAD / SILCHESTER DRIVE CSO Moston Brook 0 0h -
United Utilities Kenyon Lane CSO River Irk 0 0h -
United Utilities Mossway CSO Boardman Brook 0 0h 2,049 h
United Utilities Kendall Road (Blackley) Combined Sewer Overflow River Irk Via Birch Brook Clvr 0 0h -
United Utilities WINDSOR ROAD / WINTERDYNE STREET CSO Moston Brook 0 0h -
United Utilities Rochdale Road/Alfreton Street CSO River Irk 0 0h -
United Utilities MIDDLETON ROAD / VICTORIA AVENUE CSO River Irk 0 0h -
United Utilities Smedley Road CSO River Irk 0 0h -
United Utilities Dexter Road/Heaton Park Road CSO River Irk 0 0h -
United Utilities Manchester Old Road CSO River Irk 0 0h -
United Utilities VICTORIA AVENUE/RIVER IRK CSO River Irk 0 0h -
United Utilities Lathbury Road (Adjacent to the footpath) Combined Sewer Overflow Moston Brook 0 0h 504 h
United Utilities Queens Road/Hendham Vale CSO Culverted Section Moston Brook 0 0h -
United Utilities South Blackley New Road CSO River Irk 0 0h -
United Utilities Burton Street near Dalton Street CSO River Irk 0 0h -
United Utilities MONSALL ROAD (J SEWER) CSO Culverted Moston Brook 0 0h -
United Utilities Chudleigh Road CSO River Irk Via Sws 0 0h 1 h
United Utilities Lathbury Road (Adjacent to the footpath) Combined Sewer Overflow Moston Brook 0 0h -
United Utilities Manchester New Road Combined Sewer Overflow Boardman Brook 0 0h -
United Utilities ROCHDALE ROAD / EGGINGTON STREET CSO Moston Brook 0 0h -
United Utilities BRENTFORD STREET CSO Unnamed Watercourse 0 0h -
United Utilities BRENTFORD STREET CSO Unnamed Watercourse 0 0h 0 h
United Utilities Kenyon Lane CSO River Irk 0 0h -
United Utilities Glenbrook Road/Dexter Road CSO River Irk 0 0h -
United Utilities Mossway CSO Boardman Brook 0 0h -
United Utilities Hendham Vale CSO River Irk 0 0h -
United Utilities Kingsbridge Road CSO River Irk 0 0h -
United Utilities Mainway/Lincoln Road Combined Sewer Overflow Wince Brook Via Sws 0 0h -
United Utilities Whiteley Drive CSO Wince Brook 0 0h 1,485 h
United Utilities Hendham Vale CSO River Irk 0 0h -
United Utilities Queens Road/Scorpton Street CSO Culverted Section Moston Brook 0 0h -
United Utilities South Blackley New Road CSO River Irk 0 0h 0 h
United Utilities WINDSOR ROAD / WINTERDYNE STREET CSO Moston Brook 0 0h -
United Utilities Cleveland Road/Delaunays CSO River Irk 0 0h -
United Utilities BLACKLEY NEW ROAD CSO River Irk 0 0h 1,266 h
United Utilities Mill Brow/Blackley New Road CSO A Culverted Section River Irk 0 0h -
United Utilities Blackley New Road CSO River Irk 0 0h -
United Utilities Central Avenue CSO River Irk 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

Annual figures up to and including 2025 come from official water company returns. The 2026 figure is our own estimate, derived continuously from the companies' live data feeds.

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.