Polluted by sewage 692 times in 2025 - lasting 4,372 hours
St Annes was the #6 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 St Annes 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 | Tarra Carr Gutter | LONGTON WASTEWATER TREATMENT WORKS | 121 | 1,687 | 100 |
| United Utilities | Tarleton Runner | MERE BROW WWTW | 93 | 916 | 96.3 |
| United Utilities | River Darwin | FIELD EAST OF RIVER DARWIN CSO | 56 | 473 | 99.5 |
| United Utilities | River Ribble | BLACKPOOL ROAD CSO | 78 | 146 | 99.9 |
| United Utilities | Wrongway Brook | STATION ROAD CSO 19084 | 22 | 139 | 98.3 |
| United Utilities | Dow Brook Frecklton Pl | NEAR SHIP INN CSO | 32 | 135 | 99.8 |
| United Utilities | River Ribble | HOLME ROAD COMBINED SEWER OVERFLOW | 62 | 104 | 93.1 |
| United Utilities | Longton Brook | CLIFFORD AVENUE CSO | 21 | 101 | 99.1 |
| United Utilities | Tarleton Runner | MERE BROW WWTW | 14 | 73 | 91.9 |
| United Utilities | Boundary Brook | CAUSEY WAY COMBINED SEWER OVERFLOW | 22 | 70 | 92.5 |
| United Utilities | River Douglas | SKELMERSDALE WWTW | 12 | 56 | 99.7 |
| United Utilities | Dunkirk Dib | SHORE ROAD NETWORK PUMPING STATION | 33 | 55 | 99.5 |
| United Utilities | Carr Brook, Of Dow Brook | KIRKHAM COMBINED SEWER OVERFLOW | 18 | 54 | 100 |
| United Utilities | River Douglas | SKELMERSDALE WWTW | 14 | 47 | 96.4 |
| United Utilities | Savick Brook Rvr Ribble | COW HILL CLARKSONS FOLD CSO 33100 | 4 | 38 | 100 |
| United Utilities | Tidal River Ribble | PRESTON NETWORK TERMINAL PUMPING ST | 11 | 35 | 99.9 |
| United Utilities | Unnamed Of Mill Brook | THE GREENACRES CSO | 13 | 33 | 99.8 |
| United Utilities | Dow Brook | DOW BRIDGE CSO 19080 | 7 | 33 | 100 |
| United Utilities | Rvr Ribble | THORNPARK PUMPING STATION 33007 | 10 | 33 | 99.9 |
| United Utilities | Eaves Brook Savick Brook | WATLING STREET ROAD CSO 33024 | 3 | 29 | 91.8 |
| United Utilities | River Ribble | BROOK CORNER CSO | 8 | 23 | 97.4 |
| United Utilities | River Ribble | FISHERGATE HILL CSO (CHAMBER C9) | 3 | 20 | 52.5 |
| United Utilities | Of River Ribble | COP LANE CSO | 1 | 15 | 100 |
| United Utilities | River Ribble | WATERY LANE FORMER PS CSO 339DQ | 2 | 14 | 70.3 |
| United Utilities | River Ribble | FISHERGATE HILL CSO CHAMBER C8 | 3 | 13 | 60.8 |
| United Utilities | Bannister Brook | LEADALE ROAD CSO 402CQ | 7 | 7 | 95 |
| United Utilities | River Douglas | HESKETH LANE CSO | 12 | 6 | 99.3 |
| United Utilities | Carr Brook | SCHOOL LANE CSO 192QK | 7 | 3 | 100 |
| United Utilities | River Ribble | HAWTHORN CRESCENT CSO | 3 | 0 | 98.7 |
| United Utilities | Savick Brook | HASLAM PARK NORTH & SOUTH CSO | 0 | 0 | 100 |
| United Utilities | Chain Caul Culvert Into Ribble | WEST STRAND CSO CHAMBER C10 PRE0071 | 0 | 0 | 100 |
| United Utilities | Unnamed Laggard Brook | SMITHY LANE PUMPING STATION 19003 | 0 | 0 | 99.2 |
| United Utilities | Storm Culvert Into R Ribble | LONDON ROAD | 0 | 0 | 99.9 |
| United Utilities | Savick Brook | HASLAM PARK NORTH & SOUTH CSO | 0 | 0 | 99.6 |
| United Utilities | River Ribble Via Storm Culvert | 18 DEEPDALE ROAD | 0 | 0 | 54.7 |
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.