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Polluted by sewage 1,226 times in 2024 lasting 6,136 hours
Monitoring fell below 50% in some locations so could be more
So far this year (as of May 29, 2025, 2:00 AM) there has been 1,342 hours of sewage overflows
Your local MP is Jonathan Davies (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 Mid Derbyshire, 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 Mid Derbyshire 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 2 of the total 41 CSO locations had reporting enabled for less than half the year.
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| Severn Trent Water | River Derwent | DUFFIELD STW | 115 | 1,032 | 96.5 |
| Severn Trent Water | Flagshaw Brook | KIRK LANGLEY STW | 80 | 993 | 98.4 |
| Severn Trent Water | River Derwent | DERBY SEWAGE TREATMENT WORKS | 72 | 827 | 100 |
| Severn Trent Water | River Derwent | AREAS MILFORD & BELPER/SM & EM O/F | 136 | 556 | 99.13 |
| Severn Trent Water | River Derwent | BELPER SEWAGE TREATMENT WORKS | 58 | 540 | 98.8 |
| Severn Trent Water | Sow Brook | DALE ABBEY SEWAGE PUMPING STATION | 46 | 310 | 100 |
| Severn Trent Water | River Derwent | KEDLESTON ROAD CSO | 59 | 217 | 98.6 |
| Severn Trent Water | River Ecclesbourne | HAZELWOOD PS - EMERGENCY OVERFLOW | 22 | 178 | 100 |
| Severn Trent Water | River Derwent | DERBY ROAD | 76 | 164 | 99.8 |
| Severn Trent Water | River Derwent | DERBY ROAD CSO | 48 | 129 | 97 |
| Severn Trent Water | River Derwent | BRIDGE HILL/BELPER LANE CSO | 71 | 127 | 100 |
| Severn Trent Water | Markeaton Brook | MARKEATON LANE CSO | 28 | 115 | 99.95 |
| Severn Trent Water | Ock Brook | NEWBOLD AVENUE CSO | 28 | 114 | 94.1 |
| Severn Trent Water | River Derwent | OPPOSITE THE LODGE CSO | 35 | 103 | 84.8 |
| Severn Trent Water | River Derwent | SANDRINGHAM DRIVE CSO | 31 | 101 | 100 |
| Severn Trent Water | River Derwent | OFF STONEY GATE ROAD CSO | 31 | 83 | 79.3 |
| Severn Trent Water | River Derwent | BRIDGE FOOT COMBINED SEWER OVERFLOW | 19 | 81 | 100 |
| Severn Trent Water | River Derwent | BRIDGE STREET CSO | 73 | 65 | 100 |
| Severn Trent Water | Stanley Brook | STANLEY VILLAGE CSO | 18 | 60 | 86.5 |
| Severn Trent Water | River Derwent | NOTTINGHAM ROAD CSO | 18 | 58 | 69.2 |
| Severn Trent Water | River Derwent | ALLESTREE SEWAGE PUMPING STATION | 19 | 52 | 100 |
| Severn Trent Water | River Derwent | ANGLERS LANE CSO | 14 | 41 | 100 |
| Severn Trent Water | River Derwent | BRIDGE STREET-FIELD LANE JCN CSO | 40 | 40 | 100 |
| Severn Trent Water | Stanley Brook | ST WILFRID'S ROAD CSO | 20 | 39 | 100 |
| Severn Trent Water | River Derwent | BROADHOLME PUMPING STATION | 9 | 38 | 96.9 |
| Severn Trent Water | Mackworth Brook | KIRK LANGLEY PUMPING STATION | 7 | 23 | 96.8 |
| Severn Trent Water | River Derwent | DERBY ROAD CSO | 11 | 8 | 100 |
| Severn Trent Water | Coppice Brook | DERBY RD-GIBFIELD LN CSO | 15 | 8 | 98.8 |
| Severn Trent Water | Stalney Brook | STANLEY COMMON - COMMON LANE CSO | 11 | 6 | 99.8 |
| Severn Trent Water | Ock Brook | SOUTH OF BORROWASH BYPASS CSO | 5 | 4 | 41.9 |
| Severn Trent Water | Green Lane Brook | WESTON UNDERWOOD STW | 3 | 3 | 98.4 |
| Severn Trent Water | Ock Brook | HAWTHORNE AVENUE CSO | 2 | 1 | 95.9 |
| Severn Trent Water | River Derwent | BARGATE ROAD CSO | 1 | 1 | 100 |
| Severn Trent Water | Northern Flood Culvert | KEDLESTON ROAD STORM OVERFLOW | 2 | 0 | 100 |
| Severn Trent Water | Coppice Brook | KING ST-STRUTT ST CSO | 1 | 0 | 100 |
| Severn Trent Water | Markeaton Brook | QUARNDON - CHURCH ROAD CSO | 2 | 0 | 88.1 |
| Severn Trent Water | River Derwent | THE FLEET COMBINED SEWER OVERFLOW | 0 | 0 | 23.3 |
| Severn Trent Water | Bottle Brook | STORM SEWAGE OVERFLOW ALFRETON ROAD | 0 | 0 | 98.9 |
| Severn Trent Water | Bottle Brook | LITTLE EATON SPS - STM/EMERGENCY OF | 0 | 0 | 86.2 |
| Severn Trent Water | River Derwent | CASTLE ORCHARD PUMPING STATION | 0 | 0 | 94.8 |
| Severn Trent Water | River Derwent | CASTLE ORCHARD CSO | 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. 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