Derby South - Live Sewage

Polluted by sewage 350 hours in 2026 , monitoring offline 811 hours so far..

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Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024

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View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Derby South so far for 2026. It is an estimate, based on very poor quality live data from the Water Companies. The water companies report their sewage to the Environment Agency every year in April. You can see the last reported year in the other page

What's a potential overflow? If the CSO goes 'Offline' while its Overflowing, we don't know if it stopped overflowing until we get a 'Stop' event.

Totals for Derby South in 2026

Sewage350 hours
Monitoring offline811 hours
Potential pollution0 hours
Storm overflows38

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Constituencies near Derby South

Daily Data

Jan - 41 hours , 188 offline
Feb - 190 hours , 246 offline
Mar - 15 hours , 276 offline
Apr - 4 hours , 42 offline
May - 3 hours
Jun - 20 hours
Jul - 0 hours , 18 offline
Aug - 51 hours , 11 offline
Sept - 9 hours
Oct - 13 hours , 30 offline
Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.
Please note: We don't have rainfall data for Wales. If you know where to source it please let us know!
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Severn Trent Water ALVASTON - RAYNESWAY PARK DRIVE (CSO) River Derwent 46 217h 43m 28 h
Severn Trent Water DERBY - STATION APP/PRIDE PARKWAY (CSO) River Derwent 23 55h 6m -
Severn Trent Water DERBY - HARROW STREET (CSO) River Derwent 19 22h 51m -
Severn Trent Water SINFIN - WILMORE ROAD (CSO) Meadow Drain 2 18h 42m 24 h
Severn Trent Water CHELLASTON - STATION ROAD XX (CSO) Cuttle Brook 2 10h 37m -
Severn Trent Water NORMANTON - CUTTLEBROOK CLOSE (CSO) Cuttle Brook 2 9h 59m 486 h
Severn Trent Water DERBY - MORLEDGE/THORNTREE LANE (CSO) Markeaton Brook 9 9h 55m -
Severn Trent Water DERBY - FRIAR GATE/VICTORIA STREET (CSO) Markeaton Brook 2 2h 22m 27 h
Severn Trent Water NORMANTON - CO-OP ST/PROVIDENT ST (CSO) Cotton Brook 5 1h 37m -
Severn Trent Water PEAR TREE - HARRINGTON/HOLCOMBE ST (CSO) Cotton Brook 2 0h 39m -
Severn Trent Water PEAR TREE - LOWER DALE RD (CSO) Cotton Brook 4 0h 32m -
Severn Trent Water DERBY - GREEN LANE/MACKLIN STREET (CSO) Markeaton Brook 2 0h 18m -
Severn Trent Water NORMANTON - CO-OP ST/SOCIETY PLACE (CSO) Cotton Brook 1 0h 6m -
Severn Trent Water DERBY - ST PETERS ST/EAST STREET (CSO) Markeaton Brook 1 0h 5m 174 h
Severn Trent Water PEAR TREE - PEAR TREE RD (CSO) Cotton Brook 1 0h -
Severn Trent Water NORMANTON - PORTER ROAD/ALMOND ST (CSO) Cotton Brook 0 0h -
Severn Trent Water NORMANTON - LOWER DALE RD/BYRON ST (CSO) Cotton Brook 0 0h 18 h
Severn Trent Water DERBY - HARROW STREET (CSO) River Derwent 0 0h -
Severn Trent Water NORMANTON - CUTTLEBROOK CLOSE (CSO) Cuttle Brook 0 0h -
Severn Trent Water DERBY - ST PETERS ST/EAST STREET (CSO) Markeaton Brook 0 0h -
Severn Trent Water DERBY - LITTLEOVER LANE (CSO) Nailsworth Stream 0 0h 23 h
Severn Trent Water SINFIN - WILMORE ROAD (CSO) Meadow Drain 0 0h -
Severn Trent Water CHELLASTON - STATION ROAD XX (CSO) Cuttle Brook 0 0h -
Severn Trent Water NORMANTON - CO-OP ST/SOCIETY PLACE (CSO) Cotton Brook 0 0h -
Severn Trent Water NORMANTON - PORTER ROAD/ALMOND ST (CSO) Cotton Brook 0 0h -
Severn Trent Water DERBY - MEADOW ROAD (SSO) River Derwent 0 0h 30 h
Severn Trent Water DERBY - STATION APP/PRIDE PARKWAY (CSO) River Derwent 0 0h -
Severn Trent Water PEAR TREE - LOWER DALE RD (CSO) Cotton Brook 0 0h -
Severn Trent Water ALVASTON - RAYNESWAY PARK DRIVE (CSO) River Derwent 0 0h -
Severn Trent Water DERBY - GREEN LANE/MACKLIN STREET (CSO) Markeaton Brook 0 0h -
Severn Trent Water DERBY - LITTLEOVER LANE (CSO) Nailsworth Stream 0 0h -
Severn Trent Water DERBY - FRIAR GATE/VICTORIA STREET (CSO) Markeaton Brook 0 0h -
Severn Trent Water NORMANTON - LOWER DALE RD/BYRON ST (CSO) Cotton Brook 0 0h -
Severn Trent Water Unknown Unknown 0 0h -
Severn Trent Water NORMANTON - CO-OP ST/PROVIDENT ST (CSO) Cotton Brook 0 0h -
Severn Trent Water PEAR TREE - PEAR TREE RD (CSO) Cotton Brook 0 0h -
Severn Trent Water DERBY - MORLEDGE/THORNTREE LANE (CSO) Markeaton Brook 0 0h -
Severn Trent Water PEAR TREE - HARRINGTON/HOLCOMBE ST (CSO) Cotton Brook 0 0h -

Data Sources & Accuracy

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.

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Analysing sewage pollution by the Water Industry

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