Wirral West was polluted by sewage 632 times in 2024
lasting 3,075 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 Wirral West in 2025
So far this year (as of Apr 16, 2025, 5:45 PM) there has been 672 hours of sewage overflows
Totals for Wirral West in 2024
19 Sites polluted by Dwr Cymru Welsh Water, United Utilities
632 sewage dumps
3,075 h duration
That's 4.27 months. On average 1.7 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 Wirral West, 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 Wirral West 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 23 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 Liverpool Bay NORTH WIRRAL WWTW 201 1,446 100
Dwr Cymru Welsh Water Dee Estuary HESWALL WASTEWATER TREATMENT WORKS 58 715 99.5
Dwr Cymru Welsh Water Pipe To River Dee HESWALL SEABANK ROAD 28 228 32.9
United Utilities Arrowe Brook River Birket ARROWEBROOK LANE CSO 61 183 99.6
United Utilities Carr Drain HARRINGTON AVENUE CSO 44 123 99.5
United Utilities Newton Brook REAR OF 65 FULTON AVE CSO 5130R 28 80 99.5
United Utilities Greasby Brook FRANKBY CLOSE CSO 513MM 36 69 99.2
Dwr Cymru Welsh Water Dee COTTAGE LANE PUMPING STATION 20 57 99.8
United Utilities Greasby Brook Arrow Brook WHITEBEAM WALK CSO 513PX 27 46 99.3
United Utilities Arrowe Brook OUTSIDE 81 WODLANE CSO 513OI 26 36 99.2
United Utilities Arrowe Brook GREASBY ROAD/CORTSWAY CSO 511WQ 14 30 99.1
United Utilities Arrowe Brook 97 WOOD LANE CSO 18 21 94.6
United Utilities River Dee LONG HEY ROAD CSO 8 18 99
Dwr Cymru Welsh Water River Dee GAYTON PARKWAY CSO 11 7 98.9
United Utilities Thornton Hough, Clatter THORNTON HOUGH PUMPING STATION 17 4 99.8
Dwr Cymru Welsh Water River Dee Estuary HESWALL STORAGE TANK CSO HESWALL 22 2 99.4
Dwr Cymru Welsh Water Unnamed To River Dee GAYTON CEDARWAY PUMPING STATION 3 0 64.2
United Utilities Newton Brook ENNISDALE DRIVE CSO 6 0 98.6
United Utilities River Birket WEST KIRBY PUMPING STATION 4 0 100
United Utilities River Dee Estuary CROFT DRV SHORE RD CSO CALDY 512RB 0 0 100
United Utilities Newton Brook River Birket BLACK HORSE HILL CSO 511EV 0 0 99.2
United Utilities Irish Sea STANLEY ROAD PUMPING STATION 0 0 100
United Utilities Arrowe Brook River Birkett WOOD LANE/GLENTREE CLOSE CSO 0 0 98.2

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.