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Polluted by sewage 881 times in 2024 lasting 14,373 hours - That's 1.66 years!
So far this year (as of May 29, 2025, 1:30 AM) there has been 4,965 hours of sewage overflows - that's 0.57 years!
Your local MP is Caroline Nokes (Conservative) - 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 Romsey and Southampton North, 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 Romsey and Southampton North 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 all the declared CSOs appeared to have monitoring enabled for more than 50% of the year
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| Southern Water | River Test | KINGS SOMBORNE WWTW | 252 | 5,481 | 98 |
| Southern Water | River Blackwater | WEST WELLOW WWTW | 216 | 4,059 | 99.9 |
| Southern Water | River Test | FULLERTON WASTEWATER TREATMENT WORK | 74 | 1,314 | 99.9 |
| Southern Water | Marshcourt River | STOCKBRIDGE WWTW | 100 | 1,303 | 100 |
| Southern Water | River Test | ROMSEY WWTW | 68 | 959 | 99.8 |
| Southern Water | River Blackwater | WELLOW MILL WPS | 63 | 755 | 99.8 |
| Southern Water | River Test | CHILBOLTON WWTW | 17 | 175 | 99.8 |
| Southern Water | Unnamed Of River Test | RINGWOOD DRIVE NORTH BADDESLEY CEO | 24 | 150 | 99.7 |
| Southern Water | River Itchen | SIRDAR ROAD SOUTHAMPTON CSO | 33 | 81 | 100 |
| Southern Water | River Test | MEMORIAL PARK ROMSEY CEO | 4 | 33 | 73 |
| Southern Water | River Itchen | GREEN LANE CHILWORTH CEO | 2 | 20 | 86.7 |
| Southern Water | River Test | TRAFALGAR WAY STOCKBRIDGE CEO | 5 | 15 | 100 |
| Southern Water | Tadburn Lake | THE HUNDRED ROMSEY CSO | 4 | 11 | 71.1 |
| Southern Water | River Test | HOUGHTON ROAD STOCKBRIDGE CEO | 5 | 6 | 99.7 |
| Southern Water | Tadburn Lake | BOTLEY ROAD WPS (NORTH BADDESLEY) | 2 | 2 | 99.7 |
| Southern Water | Saline Estuary | WESSEX LANE SOUTHAMPTON | 1 | 1 | 100 |
| Southern Water | Saline Estuary | WESSEX LANE SOUTHAMPTON OUTSIDE 15 | 1 | 1 | 100 |
| Southern Water | Saline Estuary | WESSEX LANE SOUTHAMPTON OUTSIDE 11 | 10 | 1 | 57.2 |
| Southern Water | Tadburn Lake | EIGHT ACRES ROMSEY CSO | 0 | 0 | 59 |
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.
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org