Designated shellfish area 'SOUTHAMPTON WATER' polluted by sewage 253 times in 2022 - lasting 1,966 hours

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Totals for SOUTHAMPTON WATER in 2022
16 Sites polluted by Southern Water
253 sewage dumps
1,966 h duration
That's 2.73 months. 4.9 times a week, on average
How does SOUTHAMPTON WATER compare?

SOUTHAMPTON WATER was the #26 most polluted shellfish area in England & Wales, by duration of sewage overflows, as reported by the water companies

Pollution Summary 2022

Here are all the reported sewage overflow totals for SOUTHAMPTON WATER 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 %
Southern Water River Test MILLBROOK WWTW 50 659 99.9
Southern Water Southampton Water SLOWHILL COPSE WWTW 49 577 99.9
Southern Water River Itchen Estuary PORTSWOOD WWTW 44 399 100
Southern Water River Itchen Estuary WOOLSTON WWTW 22 126 98.3
Southern Water River Itchen Estuary CHAPEL WHARF WPS 14 113 100
Southern Water Bartley Water DOWNS PARK TOTTON CEO 10 34 98
Southern Water River Test MILLBROOK WWTW 7 16 99.9
Southern Water River Itchen SIRDAR ROAD SOUTHAMPTON CSO 19 16 99.9
Southern Water Test Estuary CAWTE ROAD/PARK ROAD CSO 25 14 99
Southern Water River Test Estuary HIGH STREET/BRITON STREET CSO 2 1 99.5
Southern Water River Itchen IMPERIAL ROAD MOUNT PLEASANT CEO 1 1 100
Southern Water Itchen Estuary LAWN ROAD/OSBOURNE ROAD 2 0 93
Southern Water Saline Estuary WESSEX LANE SOUTHAMPTON OUTSIDE 11 1 0 44.2
Southern Water Saline Estuary WESSEX LANE SOUTHAMPTON 1 0 50
Southern Water Saline Estuary WESSEX LANE SOUTHAMPTON OUTSIDE 15 1 0 76

Data Sources & Accuracy

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.