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
Here are all the reported sewage overflow totals for River Mersey Estuary in 2025. Sometimes sewage can be being dumped for months at a time.
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| United Utilities | River Mersey Estuary | BROMBOROUGH WWTW | 216 | 2,092 | 99.95 |
| United Utilities | River Mersey Estuary | LIVERPOOL WWTW | 178 | 996 | 100 |
| United Utilities | River Mersey Estuary | WALLASEY WW PUMPING STATION | 212 | 907 | 99.97 |
| United Utilities | River Mersey Estuary | DOCK ROAD SOUTH CSO | 86 | 726 | 100 |
| United Utilities | River Mersey Estuary | WIDNES WWTW | 89 | 693 | 100 |
| United Utilities | River Mersey Estuary | OS 49 ST ANDREWS ROAD CSO 38028 | 70 | 452 | 99.2 |
| United Utilities | River Mersey Estuary | MAYFIELD DRIVE PS1 CSO 512EZ | 79 | 402 | 100 |
| United Utilities | River Mersey Estuary | OPPOSITE 53 MOOR LANE CSO 382G6 | 42 | 190 | 99.1 |
| United Utilities | River Mersey Estuary | DOCK ROAD SOUTH CSO | 46 | 189 | 94.3 |
| United Utilities | River Mersey Estuary | O/S51 MOORLAND AVE CSO 382G6 | 67 | 157 | 99.7 |
| United Utilities | River Mersey Estuary | TANHOUSE LANE | 43 | 115 | 94.4 |
| United Utilities | River Mersey Estuary | COLLEGE ROAD ESHE ROAD CSO 38109 | 38 | 83 | 100 |
| United Utilities | River Mersey Estuary | MACDERMOTT ROAD PUMPING STATION | 7 | 80 | 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 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 | FULWOOD CSO | 7 | 4 | 100 |
| United Utilities | River Mersey Estuary | BEACONS GUTTER SSO | 10 | 4 | 100 |
| United Utilities | River Mersey Estuary | RIMROSE BROOK CSO | 10 | 3 | 100 |
| United Utilities | River Mersey Estuary | DIBBS LANE CSO 381RT | 9 | 3 | 97.3 |
| United Utilities | River Mersey Estuary | BOOTLE NORTHERN OPC CSO 99102 | 9 | 2 | 100 |
| United Utilities | River Mersey Estuary | PARK STREET COMBINED SEWER OVERFLOW | 3 | 0 | 100 |
| United Utilities | River Mersey Estuary | MILLERS BRIDGE CSO 99004 | 0 | 0 | 100 |
| United Utilities | River Mersey Estuary | WALLASEY COASTAL DRIVE 51052 | 0 | 0 | 100 |
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