Polluted by sewage 248 times in 2024 lasting 2,693 hours
Monitoring fell below 50% in some locations so could be more
So far this year (as of Apr 30, 2025, 9:00 AM) there has been 699 hours of sewage overflows
Your local MP is Satvir Kaur (Labour) - Find out more about their interests, donors, and voting at They Work For You
We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Southampton Test, here you can see overflows in red, the darker the red, the more the CSO overflowed that day.
Each CSO has a row, the most recent data is on the right hand side.
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Donate NowHere are all the reported sewage overflow totals for Southampton Test in 2024. Sometimes sewage can be being dumped for months at a time.
Reporting refers to how much of the time the monitoring was active. In this constituency 1 of the total 9 CSO locations had reporting enabled for less than half the year.
Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
---|---|---|---|---|---|
Southern Water | River Test | MILLBROOK WWTW | 122 | 1,630 | 100 |
Southern Water | River Itchen Estuary | PORTSWOOD WWTW | 91 | 994 | 99.9 |
Southern Water | Test Estuary | CAWTE ROAD/PARK ROAD CSO | 18 | 49 | 99.8 |
Southern Water | River Itchen | IMPERIAL ROAD MOUNT PLEASANT CEO | 8 | 15 | 99.9 |
Southern Water | River Itchen | UPR SHAFTESBURY AVE SOUTHAMPTON CSO | 2 | 1 | 99.8 |
Southern Water | Itchen Estuary | LAWN ROAD/OSBOURNE ROAD | 4 | 1 | 66.8 |
Southern Water | Itchen Estuary | SOUTHCLIFF ROAD/LIVERPOOL STREET | 3 | 1 | 26.1 |
Southern Water | River Test Estuary | BRUNEL ROAD WPS | 0 | 0 | 99.8 |
Southern Water | River Itchen | CEDAR ROAD SOUTHAMPTON CSO | 0 | 0 | 96.3 |
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. 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.