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Wallasey

Polluted by sewage 952 times in 2025 lasting 4,711 hours

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Totals for Wallasey in 2025

26 Sites polluted by United Utilities

952 sewage dumps

4,711 hours duration

That's 6.54 months. On average 2.6 times a day

Change Over Time

Constituency for Wallasey

Nearby Constituencies

Waterways in Wallasey

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Pollution Summary 2025

Here are all the reported sewage overflow totals for Wallasey 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 Mersey Estuary/River Birket	BIRKENHEAD WWTW BIRKE	146	1,498	100
United Utilities	Liverpool Bay	NORTH WIRRAL WWTW	191	1,238	99.7
United Utilities	River Mersey Estuary	WALLASEY WW PUMPING STATION	212	907	99.97
United Utilities	River Fender	REAR OF 25 WHEATFIELD CLOSE CSO	47	258	98
United Utilities	Arrowe Brook	WASTDALE DRIVE CSO	35	178	100
United Utilities	River Fender	HOYLAKE ROAD/CHAPELHILL CSO	26	93	89.4
United Utilities	Bidston Stream	LEASOWE ROAD CSO	53	91	99.7
United Utilities	Bidston Stream	SANDY LANE CSO	61	77	100
United Utilities	Mersey Estuary	WOODSIDE CSO	14	60	100
United Utilities	Mersey Estuary	WALLACRE ROAD CSO	31	56	100
United Utilities	River Birkett	BIDSTON BY-PASS CSO	13	47	72.4
United Utilities	River Fender	UPTON ROAD CSO 513N8	28	42	98.8
United Utilities	Arrowe Brook	SAUGHALL MASSIE RD/DEVONSHIRE RDCSO	12	38	98.4
United Utilities	Arrowe Brook	OUTSIDE 81 WODLANE CSO 513OI	24	37	99.6
United Utilities	Arrowe Brook	GREASBY ROAD/CORTSWAY CSO 511WQ	7	23	100
United Utilities	Arrowe Brook	389 HOYLAKE ROAD CSO	6	18	99.8
United Utilities	Arrowe Brook	97 WOOD LANE CSO	15	12	82.6
United Utilities	Tidal River Mersey	NEW BRIGHTON PUMPING STATION	3	6	100
United Utilities	Arrowe Brook	GARRICK AVENUE CSO	3	5	99.4
United Utilities	Arrowe Brook	ACTON LANE COMBINED SEWER OVERFLOW	3	5	90.4
United Utilities	River Fender	BRISCOE DRIVE CSO 511G9	7	4	100
United Utilities	Bidston Stream	STATION RD COMBINED SEWER OVERFLOW	6	3	99.4
United Utilities	Bidston Stream	WALLACRE ROAD/BEAUFORT DRIVE CSO	4	2	100
United Utilities	River Birket	STANLEY AVENUE/GREEN LANE CSO	3	0	99.2
United Utilities	Arrowe Brook	KINGFISHER WAY CSO	1	0	100
United Utilities	Bidston Stream	BEECHWOOD AVENUE CSO	1	0	99.2
United Utilities	Arrowe Brook	MARYLAND LANE CSO	0	0	95.5
United Utilities	River Mersey Estuary	WALLASEY COASTAL DRIVE 51052	0	0	100
United Utilities	Arrowe Brook River Birkett	WOOD LANE/GLENTREE CLOSE CSO	0	0	72.6

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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