Top of the Poops | Constituency Sewage Map | Blackley and Middleton South

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Live data for Blackley and Middleton South in 2026

So far this year (as of 10 Aug 2026, 20:01) there has been 358 hours of sewage overflows, from 90 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s

Totals for Blackley and Middleton South in 2025

35 Sites polluted by United Utilities

596 sewage dumps

1,244 hours duration

That's 1.73 months. On average 1.6 times a day

Change Over Time

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Waterways in Blackley and Middleton South

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Pollution Summary 2025

Here are all the reported sewage overflow totals for Blackley and Middleton South in 2025. 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 all the declared CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s appeared to have monitoring enabled for more than 50% of the year

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
United Utilities	River Irk	BOOTHROYDEN ROAD CSO	90	279	98.5
United Utilities	River Irk	MOSTON LANE/ROCHDALE ROAD CSO	59	209	99.9
United Utilities	River Irk	MIDDLETON MAIN OUTFALL	67	163	99.9
United Utilities	Boardman Brook	MAINWAY/WORCESTER ROAD CSO	26	116	96.2
United Utilities	Wince Brook, River Irk	KIRKWAY COMBINED SEWER OVERFLOW	48	108	99.7
United Utilities	River Irk	MIDDLETON OLD ROAD CSO	41	102	100
United Utilities	Wince Brook	WHITLEY DRIVE CSO	25	43	86.4
United Utilities	River Irk	WATERLOO ST CRESCENT RD CSO	18	37	99.9
United Utilities	Culverted River Irk	MILL BROW/BLACKLEY NEW ROAD CSO	28	31	99.9
United Utilities	Culverted Section Moston Brook	POTTERS LANE CSO	16	20	99.9
United Utilities	River Irk	CLEVELAND RD DELAUNAY RD CSO 288NJ	31	15	99.9
United Utilities	River Irk	SOUTH OF BLACKLEY NEW ROAD CSO	17	14	91.7
United Utilities	River Irk	MIDDLETON ROAD/VICTORIA AVENUE CSO	4	13	99.7
United Utilities	Moss Brook	QUEENS ROAD COMBINED SEWER OVERFLOW	15	12	99.9
United Utilities	River Irk	SMEDLEY ROAD CSO	12	10	96.4
United Utilities	River Irk	VICTORIA AVENUE/RIVER IRK CSO	4	10	100
United Utilities	A Culverted Section River Irk	MILL BROW/BLACKLEY NEW ROAD CSO	10	8	92.9
United Utilities	River Irk Via Birch Brook Clvr	KENDALL ROAD BLACKLEY CSO	5	7	99.7
United Utilities	River Irk Via Sws	CHUDDLEIGH ROAD CSO	13	7	99.8
United Utilities	Boardman Brook	MANCHESTER NEW ROAD CSO	9	5	100
United Utilities	Moston Brook	LATHBURY ROAD/SILCHESTER DRIVE CSO	7	5	100
United Utilities	River Irk	QUEENS RD/HARDHAM VALE CSO	3	4	98.7
United Utilities	Wince Brook Via Sws	MAINWAYEAST/LINCOLN ROAD CSO	2	3	99.2
United Utilities	River Irk	CLEVELAND RD DELAUNEYS RD CSO 281KK	8	2	100
United Utilities	River Irk	MANCHESTER OLD ROAD CSO	3	1	100
United Utilities	River Irk Via Sws	VICTORIA AVENUE/GLENBROOK CSO	9	1	100
United Utilities	River Irk	SOUTH OF BLACKLEY NEW ROAD CSO	3	1	99.4
United Utilities	Culverted Section Moston Brook	QUEENS ROAD/SCORPTON STREET CSO	3	0	100
United Utilities	River Irk	ROCHDALE RD/ALFRED ST CSO	5	0	91.9
United Utilities	River Irk	GLENBROOK RD EXTER RD CSO 281VU	7	0	91.7
United Utilities	River Irk	CENTRAL AVENUE CSO	2	0	72.9
United Utilities	River Irk	BURTON ST NR DALTON ST CSO 281HX	2	0	99.8
United Utilities	Culverted Moston Brook	MONSALL ROAD (J SEWER) CSO (282SF)	1	0	99.9
United Utilities	Moston Brook	ROCHDALE ROAD/EGGINGTON STREET CSO	2	0	100
United Utilities	River Irk	DEXTER RD HEATON PARK RD CSO	1	0	100
United Utilities	Unnamed Watercourse	BRENTFORD STREET CSO	0	0	96.8
United Utilities	River Irk	HENDHAM VALE CSO	0	0	100
United Utilities	River Irk	KENYON LANE CSO	0	0	100
United Utilities	River Irk	KINGSBRIDGE ROAD CSO (289BQ)	0	0	64.8
United Utilities	Moston Brook	LATHBURY ROAD ADJ TO FOOTPATH CSO	0	0	94.2
United Utilities	Boardman Brook	MOSSWAY CSO	0	0	76.8
United Utilities	River Irk	SOUTH OF BLACKLEY NEW ROAD CSO	0	0	98
United Utilities	Moston Brook	WINDSOR ROAD/WINTERDYNE STREET CSO	0	0	100

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.

Analysing sewage pollution by the Water Industry

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