Polluted by sewage 161 hours in 2026 so far..
What's a potential overflow? If the CSO goes 'Offline' while its Overflowing, we don't know if it stopped overflowing until we get a 'Stop' event.
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Donate Now| Company | Site Name | Receiving Waterway | Overflow Days | Total Duration (hours) | Offline/Potential Pollution |
|---|---|---|---|---|---|
| Southern Water | WOOLSTON SSO - 115450 | River Itchen Estuary | 19 | 145h 14m | - |
| Southern Water | RAMPART ROAD BITTERNE CEO - 108478 | River Itchen Estuary | 1 | 10h 35m | - |
| Southern Water | BLECHYNDEN TERRACE SOUTHAMPTON CSO - 108396 | River Test | 3 | 5h 59m | - |
| Southern Water | WOOLSTON SSO - 115450 | River Itchen Estuary | 0 | 0h | - |
| Southern Water | GLENFIELD AVENUE SOUTHAMPTON CSO - 108435 | River Midden | 0 | 0h | - |
| Southern Water | ALBERT ROAD CHAPEL DEPOT CEO - 108788 | River Itchen Estuary | 0 | 0h | - |
| Southern Water | BLECHYNDEN TERRACE SOUTHAMPTON CSO - 108396 | River Test | 0 | 0h | - |
| Southern Water | ALBERT ROAD CHAPEL DEPOT CEO - 108788 | River Itchen Estuary | 0 | 0h | - |
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.