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 216 times in 2025 lasting 621 hours
Your local MP is Baggy Shanker (Labour/Co-operative) - Find out more about their interests, donors, and voting at They Work For You
Please consider a one-off or small recurring donation. We need your help to keep this site going.
Donate NowHere are all the reported sewage overflow totals for Derby South in 2025. 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 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s appeared to have monitoring enabled for more than 50% of the year
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| Severn Trent Water | River Derwent | GREEN LANE PUMPING STATION | 53 | 295 | 99.1 |
| Severn Trent Water | River Derwent | ALVASTON CSO | 47 | 197 | 100 |
| Severn Trent Water | River Derwent | STATION APPROACH CSO | 30 | 61 | 99.9 |
| Severn Trent Water | River Derwent | WILMORTON COLLEGE/HARROW STREET CSO | 21 | 25 | 92.1 |
| Severn Trent Water | Cuttle Brook | DAVIDS CLOSE/STATION ROAD CSO | 4 | 14 | 100 |
| Severn Trent Water | Meadow Drain | SINFIN - WILMORE AVENUE CSO | 2 | 11 | 98.5 |
| Severn Trent Water | Cotton Brook | PROVIDENT STREET CSO | 21 | 4 | 100 |
| Severn Trent Water | Markeaton Brook | MORELEDGE / THORNTREE LANE CSO | 11 | 4 | 99.7 |
| Severn Trent Water | Markeaton Brook | ST PETERS STREET/EAST STREET CSO | 7 | 3 | 99.2 |
| Severn Trent Water | Markeaton Brook | VICTORIA STREET/FRIAR GATE JCT CSO | 2 | 1 | 100 |
| Severn Trent Water | River Derwent | MEADOW ROAD SPS | 1 | 1 | 100 |
| Severn Trent Water | Cotton Brook | HARRINGTON ST/HOLCOMBE ST CSO | 3 | 0 | 99.3 |
| Severn Trent Water | Cotton Brook | PEAR TREE ROAD | 6 | 0 | 99.3 |
| Severn Trent Water | Markeaton Brook | GREEN LANE / MACKLIN STREET CSO | 3 | 0 | 97.7 |
| Severn Trent Water | Cotton Brook | SOCIETY PLACE CSO | 2 | 0 | 100 |
| Severn Trent Water | Cotton Brook | PORTER ROAD/ALMOND ROAD CSO | 1 | 0 | 99.1 |
| Severn Trent Water | Littleover Brook | ABBEY STREET CSO | 1 | 0 | 100 |
| Severn Trent Water | Cuttle Brook | CUTTLE BROOK CLOSE CSO | 1 | 0 | 100 |
| Severn Trent Water | Cotton Brook | DALE ROAD/BYRON STREET CSO | 0 | 0 | 98.8 |
| Severn Trent Water | Cotton Brook | PEAR TREE RD/DAIRY HOUSE RD | 0 | 0 | 100 |
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
Annual figures up to and including 2025 come from official water company returns. The 2026 figure is our own estimate, derived continuously from the companies' live data feeds.
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