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Polluted by sewage 420 times in 2025 - lasting 1,526 hours
Southport; St Annes; St. Annes North; Blackpool South was the #27 most polluted bathing area in England & Wales, by duration of sewage overflows, as reported by the water companies
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Donate NowHere are all the reported sewage overflow totals for Southport; St Annes; St. Annes North; Blackpool South in 2025.
We use data from the water companies, but we are seeing many anomalies that make us believe that bathing location information is quite poor. The situation is likely far worse than reported here.
If the locations of the sewage outlets look a bit unusual, it is likely that the reporting of the data from the water company is in error. We rely on their data in order to draw these maps.
Other CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s may also be located nearby, however the water companies claim that these do not affect the water quality here.
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| United Utilities | River Douglas | WIGAN WASTEWATER TREATMENT WORKS | 33 | 477 | 100 |
| United Utilities | River Ribble Estuary | PRESTON WASTEWATER TREATMENT WORKS | 43 | 371 | 99.5 |
| United Utilities | Wrea Brook | LYTHAM ROAD PS | 57 | 227 | 100 |
| United Utilities | Crossens Pool | SOUTHPORT WWTW | 26 | 118 | 100 |
| United Utilities | River Ribble Tidal Via Sws | RIBBLETON LANE CSO 33103 | 10 | 81 | 100 |
| United Utilities | Liggard Brook | LYTHAM PUMPING STATION | 28 | 56 | 100 |
| United Utilities | Swillbrook Clvrt R Ribble | ALBYN STREET EAST CSO 33102 | 4 | 54 | 99.8 |
| United Utilities | Douglas Estuary | HESKETH BANK WWTW HSKBK | 6 | 51 | 99.7 |
| United Utilities | River Ribble | WOLSELEY ROAD CSO | 3 | 37 | 99.9 |
| United Utilities | Hole Brook | BLACKBURN WWTW | 19 | 27 | 98.6 |
| United Utilities | Chain Caul Culvert | POWIS ROAD CSO 332MG PRE0025 | 2 | 14 | 100 |
| United Utilities | Moore Brook Culvert | ST GEORGES ROAD CSO | 168 | 3 | 96.2 |
| United Utilities | Swillbrook Culvert | FRENCHWOOD KNOLL CSO 331UX | 18 | 2 | 100 |
| United Utilities | River Ribble | VALLEY ROAD PUMPING STATION | 3 | 1 | 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