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Polluted by sewage 819 hours in 2025
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We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Derby 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 Now| Company | Site Name | Receiving Waterway | Overflow Days | Total Duration (hours) | Total Duration (days) |
|---|---|---|---|---|---|
| Severn Trent Water | CHADDESDEN - JOHN BERRYSFORD CLOSE (CSO) | Chaddesden Brook | 40 | 114 h 4m | 4.75 |
| Severn Trent Water | ALLESTREE - SITE OF ALLESTREE WRW (CSO) | River Derwent | 28 | 93 h 11m | 3.88 |
| Severn Trent Water | DERBY - ST ANNES CLOSE (CSO) | Markeaton Brook | 22 | 82 h 40m | 3.42 |
| Severn Trent Water | DERBY - EASTGATE/PENTAGON ISLAND (CSO) | River Derwent | 13 | 76 h 35m | 3.17 |
| Severn Trent Water | MICKLEOVER - MELBOURNE CLOSE (CSO) | Bramble Brook | 8 | 57 h 37m | 2.38 |
| Severn Trent Water | MICKLEOVER - SANDOWN AVENUE (SSO) | Egginton Brook | 14 | 49 h 1m | 2.04 |
| Severn Trent Water | DERBY - WAYZGOOSE DRIVE (CSO) | River Derwent | 18 | 41 h 37m | 1.71 |
| Severn Trent Water | DERBY - BROADWAY 76 (CSO) | Markeaton Brook | 26 | 40 h 59m | 1.67 |
| Severn Trent Water | DERBY - MARKEATON ST/MERCHANT ST (CSO) | Markeaton Brook | 16 | 40 h 53m | 1.67 |
| Severn Trent Water | CHADDESDEN - JOHN BERRYSFORD CLOSE (CSO) | Chaddesden Brook | 13 | 35 h 56m | 1.46 |
| Severn Trent Water | MICKLEOVER - MELBOURNE CLOSE (CSO) | Bramble Brook | 4 | 29 h 44m | 1.21 |
| Severn Trent Water | MICKLEOVER - BRIERFIELD WAY (CSO) | Hell Brook | 18 | 25 h 36m | 1.04 |
| Severn Trent Water | DARLEY ABBEY - NEW ROAD (CSO) | River Derwent | 22 | 25 h 25m | 1.04 |
| Severn Trent Water | ALLESTREE - SITE OF ALLESTREE WRW (CSO) | River Derwent | 9 | 19 h 17m | 0.79 |
| Severn Trent Water | DARLEY ABBEY - OLD LANE X (CSO) | River Derwent | 4 | 10 h 40m | 0.42 |
| Severn Trent Water | DERBY - UTTOXETER NEW RD 2 (CSO) | Markeaton Brook | 15 | 10 h 21m | 0.42 |
| Severn Trent Water | CHADDESDEN - NOTTINGHAM RD (CSO) | Chaddesden Brook | 10 | 9 h 11m | 0.38 |
| Severn Trent Water | DERBY - ST ANNES CLOSE (CSO) | Markeaton Brook | 5 | 8 h 2m | 0.33 |
| Severn Trent Water | CHADDESDEN - DURHAM AVE/SUFFOLK AV (CSO) | Chaddesden Brook | 16 | 7 h 9m | 0.29 |
| Severn Trent Water | DERBY - MARKEATON ST/MERCHANT ST (CSO) | Markeaton Brook | 2 | 7 h | 0.29 |
| Severn Trent Water | DERBY - SHAWS GREEN (CSO) | Markeaton Brook | 16 | 6 h 53m | 0.25 |
| Severn Trent Water | DERBY - EASTGATE/PENTAGON ISLAND (CSO) | River Derwent | 2 | 6 h 23m | 0.25 |
| Severn Trent Water | DURHAM AVENUE/SHROPSHIRE AVENUE (CSO) | Chaddesden Brook | 14 | 5 h 3m | 0.21 |
| Severn Trent Water | DERBY - WAYZGOOSE DRIVE (CSO) | River Derwent | 2 | 4 h 1m | 0.17 |
| Severn Trent Water | DERBY - BROADWAY 76 (CSO) | Markeaton Brook | 1 | 3 h 42m | 0.12 |
| Severn Trent Water | MICKLEOVER - SANDOWN AVENUE (SSO) | Egginton Brook | 2 | 3 h 39m | 0.12 |
| Severn Trent Water | DARLEY ABBEY - NEW ROAD (CSO) | River Derwent | 2 | 1 h 58m | 0.04 |
| Severn Trent Water | DERBY - UTTOXETER NEW RD 2 (CSO) | Markeaton Brook | 1 | 0 h 29m | 0 |
| Severn Trent Water | DERBY - UTTOXETER OLD RD (CSO) | Markeaton Brook | 2 | 0 h 24m | 0 |
| Severn Trent Water | CHADDESDEN - NOTTINGHAM RD (CSO) | Chaddesden Brook | 1 | 0 h 22m | 0 |
| Severn Trent Water | DURHAM AVENUE/SHROPSHIRE AVENUE (CSO) | Chaddesden Brook | 1 | 0 h 17m | 0 |
| Severn Trent Water | CHADDESDEN - DURHAM AVE/SUFFOLK AV (CSO) | Chaddesden Brook | 1 | 0 h 17m | 0 |
| Severn Trent Water | DERBY - SHAWS GREEN (CSO) | Markeaton Brook | 1 | 0 h 14m | 0 |
| Severn Trent Water | DERBY - DURHAM STREET/WILTSHIRE ROAD (CSO) | Chaddesden Brook | 1 | 0 h 12m | 0 |
| Severn Trent Water | DERBY - WOODS LANE XX (CSO) | Littleover Brook | 0 | 0 h | 0 |
| Severn Trent Water | DARLEY ABBEY - OLD LANE X (CSO) | River Derwent | 0 | 0 h | 0 |
| Severn Trent Water | MICKLEOVER - BRIERFIELD WAY (CSO) | Hell Brook | 0 | 0 h | 0 |
| Severn Trent Water | DERBY - ABBEY STREET/MACKLIN ST (CSO) | Littleover Brook | 0 | 0 h | 0 |
| Severn Trent Water | DARLEY ABBEY - POPLAR ROW (SSO) | River Derwent | 0 | 0 h | 0 |
| Severn Trent Water | DERBY - UTTOXETER OLD RD (CSO) | Markeaton Brook | 0 | 0 h | 0 |
| Severn Trent Water | DERBY - UTTOXETER NEW RD X (CSO) | Markeaton Brook | 0 | 0 h | 0 |
| Severn Trent Water | DERBY - PARCEL TERRACE (CSO) | Markeaton Brook | 0 | 0 h | 0 |
| Severn Trent Water | DERBY - WOODS LANE XX (CSO) | Littleover Brook | 0 | 0 h | 0 |
| Severn Trent Water | DERBY - DURHAM STREET/WILTSHIRE ROAD (CSO) | Chaddesden Brook | 0 | 0 h | 0 |
| Severn Trent Water | DERBY - MONK ST/KING ALFRED ST (CSO) | Littleover Brook | 0 | 0 h | 0 |
| Severn Trent Water | DERBY - WOODS LANE/STOCKBROOK ST (CSO) | Littleover Brook | 0 | 0 h | 0 |
| Severn Trent Water | DERBY - MONK ST/KING ALFRED ST (CSO) | Littleover Brook | 0 | 0 h | 0 |
| Severn Trent Water | DERBY - GREAT NORTHERN ROAD (CSO) | Markeaton Brook | 0 | 0 h | 0 |
| Severn Trent Water | DERBY - PARCEL TERRACE (CSO) | Markeaton Brook | 0 | 0 h | 0 |
| Severn Trent Water | DERBY - WOODS LANE/STOCKBROOK ST (CSO) | Littleover Brook | 0 | 0 h | 0 |
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