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Stockport

Polluted by sewage 1,097 times in 2025 lasting 4,168 hours

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Totals for Stockport in 2025

38 Sites polluted by United Utilities

1,097 sewage dumps

4,168 hours duration

That's 5.79 months. On average 3 times a day

Change Over Time

Constituency for Stockport

Nearby Constituencies

Waterways in Stockport

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Pollution Summary 2025

Here are all the reported sewage overflow totals for Stockport 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 place 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 Tame	DENTON TRANSFER PUMPING STATION	135	896	99.9
United Utilities	River Goyt	OTTERSPOOL ROAD CSO	117	728	99.4
United Utilities	River Mersey	STOCKPORT WWTW	100	632	100
United Utilities	River Goyt	HAZEL GROVE STW	38	360	100
United Utilities	River Mersey	HOPE STREET COMBINED SEWER OVERFLOW	84	184	99.3
United Utilities	River Goyt	BONGS VALLEY PUMPING STATION	54	170	100
United Utilities	Black Brook	WELLINGTON RD NORTH/	55	155	66.3
United Utilities	River Tame	PENNY LANE GRIMESBOTTOM CSO 43122	35	137	99.7
United Utilities	River Mersey	WELLINGTON ROAD SOUTH CSO	50	115	66.8
United Utilities	River Mersey	PRINCES STREET CSO	54	113	99.6
United Utilities	River Mersey	THE CIRCUIT CSO 432UT	56	101	99.9
United Utilities	River Mersey	TRAVIS BROW/GEORGES ROAD CSO	56	86	99.8
United Utilities	Clvrt Section Of River Mersey	GREAT UNDERBANK CSO 43200 STK0039	39	75	69.5
United Utilities	River Goyt	BONGS ROAD COMBINED SEWER OVERFLOW	35	71	99.6
United Utilities	River Mersey Estuary Via Sws	STOCKPORT RD ESSEX AVE CSO 432SK	29	33	99.4
United Utilities	Chorlton Brook	MILL LANE CEMETERY CSO	15	31	96.1
United Utilities	River Goyt	NEWBRIDGE LANE CSO	2	27	83.6
United Utilities	River Goyt	AVENUE ST BREWERY ST CSO	11	26	100
United Utilities	Crookilley Brook Via A Sws	BREDBURY UID CSO TANK	5	25	93.5
United Utilities	Ocherley Brook	TORKINGTON ROAD CSO	2	24	98.2
United Utilities	River Mersey	HEATON MOOR CSO 431YX	17	24	97.1
United Utilities	Micker Brook	258 COUNCILLOR LANE	6	23	100
United Utilities	River Mersey	BRIGHTON ROAD CSO	28	21	97
United Utilities	River Mersey	BRINKSWAY BRIDGE/GVILLE STREET CSO	2	13	99.5
United Utilities	River Tame	BRINNINGTON RISE CSO 431GD	4	12	99.4
United Utilities	Poise Brook Rvr Goyt	HAZELWOOD ROAD CSO 435GY	7	10	84
United Utilities	Unknown	ABNEY HALL	12	10	100
United Utilities	River Mersey	CHESTERGATE CSO 431A3	6	9	99.8
United Utilities	Lady Brook	50 BRIDGE LANE BRAMHALL CSO	5	9	100
United Utilities	River Goyt	NEWBRIDGE LN CROMER ST CSO 432HT	1	8	100
United Utilities	River Mersey	95/97 CRAIG ROAD HEATON MERSEY CSO	5	6	99.9
United Utilities	River Goyt	JUNC STRINGER ST/NEW BRIDGE LN CSO	7	5	91
United Utilities	River Goyt	CARRINGTON RD/OFFERTON ST	9	4	99.4
United Utilities	River Goyt Via Sws	JUNC STRINGER ST/NEW BRIDGE LN CSO	2	3	99.9
United Utilities	River Mersey	CHESTERGATE/KING STREET WEST CSO	5	2	98
United Utilities	River Goyt Via Sws	LANCASTER STREET CSO 432CD	1	1	89.1
United Utilities	River Goyt Via Sws	STOCKPORT ROAD WEST CSO	3	0	100
United Utilities	River Mersey	103 BRINKSWAY/LARK HILL	5	0	99.7
United Utilities	Cringle Beck	CLARE RD/DAVENHILL RD CSO	0	0	96.1
United Utilities	Crookilley Brook Culvert	242 STOCKPORT RD WEST	0	0	97.3
United Utilities	Poise Brook	MARPLE ROAD COMBINED SEWER OVERFLOW	0	0	100
United Utilities	Crookilley Brook Via Sws	STOCKPORT RD WEST/ASHTON RD CSO	0	0	99.4
United Utilities	Marple Brook Via Sws	STOCKPORT ROAD/HILL TOP DRIVE CSO	0	0	100
United Utilities	River Goyt	NEWBRIDGE LANE CSO	0	0	94.6

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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