Media Queries
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org
Please Support Us
We rely on donations to fund our work. Please support us if you can
Polluted by sewage 642 times in 2024 lasting 5,906 hours
Monitoring fell below 50% in some locations so could be more
We managed to raise £150 in 2024. That's not enough to keep the site running. Please consider a one-off or small recurring donation.
Donate NowHere are all the reported sewage overflow totals for Southampton 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 locality 2 of the total 25 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 | CHICKENHALL EASTLEIGH WWTW | 73 | 999 | 100 |
| Southern Water | River Itchen Estuary | PORTSWOOD WWTW | 91 | 994 | 99.9 |
| Southern Water | Southampton Water | SLOWHILL COPSE WWTW | 84 | 969 | 100 |
| Southern Water | River Itchen | POUND ROAD BURSLEDON CEO | 95 | 437 | 99.7 |
| Southern Water | River Itchen Estuary | WOOLSTON WWTW | 36 | 340 | 99.8 |
| Southern Water | River Itchen Estuary | CHAPEL WHARF WPS | 40 | 335 | 77.5 |
| Southern Water | River Itchen | SIRDAR ROAD SOUTHAMPTON CSO | 33 | 81 | 100 |
| Southern Water | Test Estuary | CAWTE ROAD/PARK ROAD CSO | 18 | 49 | 99.8 |
| Southern Water | River Itchen | GREEN LANE CHILWORTH CEO | 2 | 20 | 86.7 |
| Southern Water | River Itchen | IMPERIAL ROAD MOUNT PLEASANT CEO | 8 | 15 | 99.9 |
| Southern Water | River Test | BLECHYNDEN TERRACE SOUTHAMPTON CSO | 9 | 11 | 99.9 |
| Southern Water | River Itchen | GATERS MILL | 3 | 8 | 99.8 |
| Southern Water | Wildern Stream | CHALICE COURT HEDGE END CEO | 3 | 2 | 99.9 |
| Southern Water | River Itchen | UPR SHAFTESBURY AVE SOUTHAMPTON CSO | 2 | 1 | 99.8 |
| Southern Water | River Itchen Estuary | RAMPART ROAD PS | 3 | 1 | 96 |
| Southern Water | Saline Estuary | WESSEX LANE SOUTHAMPTON | 1 | 1 | 100 |
| Southern Water | Saline Estuary | WESSEX LANE SOUTHAMPTON OUTSIDE 15 | 1 | 1 | 100 |
| Southern Water | Itchen Estuary | LAWN ROAD/OSBOURNE ROAD | 4 | 1 | 66.8 |
| Southern Water | Saline Estuary | WESSEX LANE SOUTHAMPTON OUTSIDE 11 | 10 | 1 | 57.2 |
| Southern Water | Itchen Estuary | SOUTHCLIFF ROAD/LIVERPOOL STREET | 3 | 1 | 26.1 |
| Southern Water | River Midden | GLENFIELD AVENUE CSO | 1 | 0 | 25.1 |
| Southern Water | River Test Estuary | HIGH STREET/BRITON STREET CSO | 0 | 0 | 99.8 |
| 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. 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.
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org