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Polluted by sewage 656 times in 2024 lasting 2,563 hours
Monitoring fell below 50% in some locations so could be more
So far this year (as of May 29, 2025, 1:15 AM) there has been 778 hours of sewage overflows
Your local MP is Bill Esterson (Labour) - Find out more about their interests, donors, and voting at They Work For You
We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Sefton Central, 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.
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Donate NowHere are all the reported sewage overflow totals for Sefton Central 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 1 of the total 14 CSO locations had reporting enabled for less than half the year.
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| United Utilities | River Mersey Estuary | OS 49 ST ANDREWS ROAD CSO 38028 | 109 | 714 | 99.3 |
| United Utilities | River Alt | FORMBY WASTEWATER TREATMENT WORKS | 80 | 681 | 100 |
| United Utilities | River Mersey Estuary | OPPOSITE 53 MOOR LANE CSO 382G6 | 134 | 403 | 99 |
| United Utilities | River Mersey Estuary | O/S51 MOORLAND AVE CSO 382G6 | 126 | 336 | 98.8 |
| United Utilities | River Mersey Estuary | COLLEGE ROAD ESHE ROAD CSO 38109 | 59 | 132 | 99.2 |
| United Utilities | Hunts Brook | THORNTON PUMPING STATION THRTN | 24 | 118 | 100 |
| United Utilities | River Mersey Estuary | DIBBS LANE CSO 381RT | 58 | 92 | 99 |
| United Utilities | River Alt | MELLING WWTW | 9 | 39 | 99.9 |
| United Utilities | River Mersey Estuary | O/S 107 LIVERPOOL ROAD CSO 382D3 | 27 | 30 | 86.8 |
| United Utilities | River Mersey Estuary | OUTSIDE 16 CORONATION RD CSO 381PQ | 12 | 6 | 99.3 |
| United Utilities | River Mersey Estuary | DIBBS LANE CSO 381RT | 8 | 3 | 90.2 |
| United Utilities | River Mersey Estuary | THE BYPASS/LPOOL RD JUNCT CSO 382UR | 5 | 2 | 26.4 |
| United Utilities | Maghull Brook | REAR 23 LIVERPOOL ROAD NORTH CSO | 5 | 0 | 74.5 |
| United Utilities | Moor Hey Brook | BRIDGE RD JCT COPY LANE | 0 | 0 | 78.4 |
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.
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org