Analysing sewage pollution by the Water Industry
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Tamar was the #15 most polluted shellfish area in England & Wales, by duration of sewage overflows, as reported by the water companies
Here are all the reported sewage overflow totals for Tamar in 2022.
Accuracy Warning We use data from the water companies, but we are seeing many anomalies, that make us believe that location information is quite poor. The situation is likely far worse than reported here.
In particular: Totals on this page can differ from totals in the Ranked Shellfish page - number on this page are higher - this is due to a lack of standardization on shellfish area names. This page more accurately counts the differing names. For example "Solway" and "SOLWAY" are counted as different in the rankings, but correctly aggregated here.
Other CSOs 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 % |
|---|---|---|---|---|---|
| South West Water | Weston Mill Lake | CAMELS HEAD WWTW | 63 | 861 | 100 |
| South West Water | Weston Mill Lake | CAMELS HEAD WWTW | 64 | 822 | 100 |
| South West Water | River Tamar | ERNESETTLE SEWAGE TREATMENT WORKS | 70 | 795 | 100 |
| South West Water | River Tamar | ERNESETTLE SEWAGE TREATMENT WORKS | 46 | 484 | 100 |
| South West Water | Weston Mill Stream | HONDA GARAGE CSO | 32 | 445 | 21 |
| South West Water | Tamerton Lake | WHITLEIGH WOOD CSO | 32 | 138 | 93 |
| South West Water | Honicknowle Stream | HONICKNOWLE CSO | 27 | 127 | 100 |
| South West Water | Tamerton Stream | HAYESEND FARM CSO | 16 | 86 | 100 |
| South West Water | River Lyner | FORDER NO 1 PSCSO/EO | 15 | 81 | 100 |
| South West Water | Tamerton Lake | TAMERTON FOLIOT PUMPING STATION | 13 | 70 | 100 |
| South West Water | Saltmill Creek | RIVERVIEW PSCSO/EO | 8 | 52 | 100 |
| South West Water | Saltmill Creek | ADIT LANE CSO | 55 | 29 | 87 |
| South West Water | Tamar Estuary | OLD FERRY ROAD CSO | 12 | 16 | 99 |
| South West Water | Southway Stream | SOUTHWAY DRIVE CSO | 6 | 9 | 8 |
| South West Water | River Tamar Estuary | COOMBE ROAD CSO | 10 | 8 | 76 |
| South West Water | River Tamar Estuary | WATERSIDE PUMPING STATION | 5 | 8 | 100 |
| South West Water | Weston Mill Lake | FLORENCE STREET CSO | 23 | 6 | 83 |
| South West Water | Ham Brook | HAM LANE STORM TANK CSO | 2 | 1 | 86 |
| South West Water | Honicknowle Stream | MOWHAY ROAD NO.2 CSO | 3 | 1 | 72 |
| South West Water | Weston Mill Lake | CAMELS HEAD WWTW | 2 | 1 | 96 |
| South West Water | River Tamar | BRUNEL BRIDGE CSO | 8 | 1 | 100 |
| South West Water | River Lyner | FORDER NO 2 PSCSO/EO | 2 | 1 | 100 |
| South West Water | Weston Mill Lake Via W'Course | MAUNSELL CLOSE CSO | 4 | 1 | 100 |
| South West Water | River Tamar Estuary | COWDRY CLOSE CSO | 3 | 0 | 100 |
| South West Water | Honicknowle Stream | TAMAR WAY CSO | 1 | 0 | 81 |
| South West Water | Weston Mill Creek Via Wtr Crse | WOLSELEY ROAD TANK CSO | 1 | 0 | 100 |
EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales
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.
Analysing sewage pollution by the Water Industry
With generous support from: