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Polluted by sewage 148 times in 2024 lasting 346 hours
Monitoring fell below 50% in some locations so could be more
So far this year (as of May 29, 2025, 1:15 AM) there has been 682 hours of sewage overflows
Your local MP is Tristan Osborne (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 Chatham and Aylesford, 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 Chatham and Aylesford 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 6 of the total 19 CSO locations had reporting enabled for less than half the year.
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| Southern Water | River Medway Estuary | HAM HILL S.T.W. | 22 | 189 | 100 |
| Southern Water | Tidal Estuary Of River Medway | CONSTITUTION HILL CHATHAM CSO | 32 | 76 | 77.5 |
| Southern Water | River Medway Estuary | SECOND AVENUE NO 3 CHATHAM CSO | 18 | 41 | 74.7 |
| Southern Water | River Medway Estuary | MAGPIE HALL ROAD CHATHAM OUTSIDE 33 | 38 | 19 | 83.8 |
| Southern Water | River Medway Estuary | SECOND AVENUE NO 2 CSO | 16 | 12 | 40.2 |
| Southern Water | River Medway Estuary | RECTORY CLOSE WOULDHAM WWPS | 3 | 2 | 100 |
| Southern Water | River Medway | RIDGEWAY BANKS CHATHAM CSO | 7 | 1 | 100 |
| Southern Water | River Medway | CONCORD AVENUE CHATHAM CSO | 2 | 0 | 26.7 |
| Southern Water | River Medway Estuary | SECOND AVE CHATHAM NO1 CSO | 2 | 0 | 99.9 |
| Southern Water | River Medway Estuary | STURLA ROAD CHATHAM CSO | 1 | 0 | 33.1 |
| Southern Water | River Medway | MAIDA ROAD CHATHAM CSO | 3 | 0 | 22.7 |
| Southern Water | River Medway Estuary | ORDNANCE TERRACE CHATHAM CSO | 1 | 0 | 90.3 |
| Southern Water | River Medway Estuary | MELBOURNE ROAD CHATHAM CSO | 1 | 0 | 100 |
| Southern Water | Medway Estuary | GROVE ROAD CHATHAM OUTSIDE 1 CSO | 1 | 0 | 70.8 |
| Southern Water | River Medway Estuary | GROVE ROAD CHATHAM O/S 77 CSO | 1 | 0 | 100 |
| Southern Water | River Medway Estuary | WALDERSLADE ROAD CHATHAM 149 CSO | 0 | 0 | 2.3 |
| Southern Water | River Medway Estuary | MAGPIE HALL ROAD OUTSIDE 60 CSO | 0 | 0 | 55.7 |
| Southern Water | River Medway Estuary | CSO HOPWELL DRIVE (CHATHAM) | 0 | 0 | 94.8 |
| Southern Water | River Medway Estuary | CHATHAM HILL CHATHAM OUTSIDE 10 CSO | 0 | 0 | 9.3 |
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.
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org