Media Queries
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org
Please Support Us
We rely on donations to fund our work. Please support us if you can
Polluted by sewage 581 times in 2025 lasting 2,617 hours
Your local MP is Bill Esterson (Labour) - Find out more about their interests, donors, and voting at They Work For You
Please consider a one-off or small recurring donation. We need your help to keep this site going.
Donate NowHere are all the reported sewage overflow totals for Sefton Central 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 Alt | FORMBY WASTEWATER TREATMENT WORKS | 75 | 951 | 100 |
| United Utilities | River Mersey Estuary | OS 49 ST ANDREWS ROAD CSO 38028 | 70 | 452 | 99.2 |
| United Utilities | River Alt | ST MICHAELS ROAD/MANOR ROAD CSO | 80 | 412 | 79.8 |
| United Utilities | River Mersey Estuary | OPPOSITE 53 MOOR LANE CSO 382G6 | 42 | 190 | 99.1 |
| United Utilities | River Mersey Estuary | O/S51 MOORLAND AVE CSO 382G6 | 67 | 157 | 99.7 |
| United Utilities | Mersey Estuary | ST ANDREWS ROAD/ST MICHAEL CSO | 58 | 154 | 92.8 |
| United Utilities | River Mersey Estuary | COLLEGE ROAD ESHE ROAD CSO 38109 | 38 | 83 | 100 |
| United Utilities | Hunts Brook | THORNTON PUMPING STATION THRTN | 12 | 76 | 100 |
| United Utilities | River Mersey Estuary | DIBBS LANE CSO 381RT | 37 | 45 | 99 |
| United Utilities | River Mersey Estuary | O/S 107 LIVERPOOL ROAD CSO 382D3 | 20 | 27 | 100 |
| United Utilities | River Alt | MELLING WWTW | 5 | 27 | 99.9 |
| United Utilities | Sandy Brook | OPPOSITE NO.36 CARR LANE CSO | 11 | 16 | 100 |
| United Utilities | River Alt Estuarine Waters | RIVERSIDE ROAD PUMPING STATION | 38 | 7 | 100 |
| United Utilities | River Mersey Estuary | OUTSIDE 16 CORONATION RD CSO 381PQ | 7 | 6 | 99.2 |
| United Utilities | River Mersey Estuary | THE BYPASS/LPOOL RD JUNCT CSO 382UR | 9 | 4 | 76.4 |
| United Utilities | River Mersey Estuary | DIBBS LANE CSO 381RT | 9 | 3 | 97.3 |
| United Utilities | Maghull Brook | REAR 23 LIVERPOOL ROAD NORTH CSO | 3 | 0 | 81.7 |
| United Utilities | Moor Hey Brook | BRIDGE RD JCT COPY LANE | 0 | 0 | 98.9 |
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.
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org