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Derby South - 2025 Sewage

Polluted by sewage 371 hours in 2025 , monitoring offline 1,217 hours

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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 for 2025. It is an estimate, based on very poor quality live data from the Water Companies. This may not align with the 'official' reported sewage values from the water companies, which is reported in April following then end of the year - so 2025 numbers are reported in April 2026.

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.

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Constituencies near Derby South

Daily Data

Jan - 75 hours , 738 offline
Feb - 4 hours , 117 offline
Mar - 0 hours
Apr - 2 hours
May - 8 hours , 158 offline
Jun - 1 hours
Jul - 18 hours
Aug - 2 hours , 18 offline
Sept - 47 hours
Oct - 20 hours , 13 offline
Nov - 133 hours , 104 offline
Dec - 55 hours , 66 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 37 187 h 52m -
Severn Trent Water ALVASTON - RAYNESWAY PARK DRIVE (CSO) River Derwent 14 58 h 58m -
Severn Trent Water DERBY - STATION APP/PRIDE PARKWAY (CSO) River Derwent 25 51 h 45m 120 h
Severn Trent Water DERBY - HARROW STREET (CSO) River Derwent 16 20 h 40m 29 h
Severn Trent Water SINFIN - WILMORE ROAD (CSO) Meadow Drain 2 11 h 54m 145 h
Severn Trent Water CHELLASTON - STATION ROAD XX (CSO) Cuttle Brook 3 11 h 18m -
Severn Trent Water DERBY - STATION APP/PRIDE PARKWAY (CSO) River Derwent 5 8 h 30m -
Severn Trent Water NORMANTON - PORTER ROAD/ALMOND ST (CSO) Cotton Brook 3 4 h 3m 80 h
Severn Trent Water DERBY - HARROW STREET (CSO) River Derwent 2 3 h 4m -
Severn Trent Water CHELLASTON - STATION ROAD XX (CSO) Cuttle Brook 1 2 h 33m -
Severn Trent Water NORMANTON - CO-OP ST/PROVIDENT ST (CSO) Cotton Brook 11 2 h 31m -
Severn Trent Water DERBY - ST PETERS ST/EAST STREET (CSO) Markeaton Brook 7 2 h 7m 179 h
Severn Trent Water DERBY - FRIAR GATE/VICTORIA STREET (CSO) Markeaton Brook 2 1 h 17m 28 h
Severn Trent Water DERBY - MEADOW ROAD (SSO) River Derwent 1 1 h 10m -
Severn Trent Water PEAR TREE - HARRINGTON/HOLCOMBE ST (CSO) Cotton Brook 3 0 h 57m 13 h
Severn Trent Water DERBY - MORLEDGE/THORNTREE LANE (CSO) Markeaton Brook 4 0 h 43m 246 h
Severn Trent Water DERBY - MORLEDGE/THORNTREE LANE (CSO) Markeaton Brook 2 0 h 26m -
Severn Trent Water PEAR TREE - LOWER DALE RD (CSO) Cotton Brook 5 0 h 24m 62 h
Severn Trent Water DERBY - GREEN LANE/MACKLIN STREET (CSO) Markeaton Brook 2 0 h 21m 18 h
Severn Trent Water NORMANTON - CO-OP ST/SOCIETY PLACE (CSO) Cotton Brook 2 0 h 12m -
Severn Trent Water PEAR TREE - PEAR TREE RD (CSO) Cotton Brook 2 0 h 12m -
Severn Trent Water Unknown Unknown 2 0 h 12m -
Severn Trent Water NORMANTON - CUTTLEBROOK CLOSE (CSO) Cuttle Brook 1 0 h 3m -
Severn Trent Water NORMANTON - LOWER DALE RD/BYRON ST (CSO) Cotton Brook 0 0 h -
Severn Trent Water NORMANTON - CO-OP ST/SOCIETY PLACE (CSO) Cotton Brook 0 0 h -
Severn Trent Water DERBY - LITTLEOVER LANE (CSO) Nailsworth Stream 0 0 h -
Severn Trent Water NORMANTON - PORTER ROAD/ALMOND ST (CSO) Cotton Brook 0 0 h -
Severn Trent Water PEAR TREE - HARRINGTON/HOLCOMBE ST (CSO) Cotton Brook 0 0 h -
Severn Trent Water DERBY - LITTLEOVER LANE (CSO) Nailsworth Stream 0 0 h 18 h
Severn Trent Water DERBY - ST PETERS ST/EAST STREET (CSO) Markeaton Brook 0 0 h -
Severn Trent Water PEAR TREE - LOWER DALE RD (CSO) Cotton Brook 0 0 h -
Severn Trent Water NORMANTON - LOWER DALE RD/BYRON ST (CSO) Cotton Brook 0 0 h 171 h
Severn Trent Water SINFIN - WILMORE ROAD (CSO) Meadow Drain 0 0 h 38 h
Severn Trent Water NORMANTON - CO-OP ST/PROVIDENT ST (CSO) Cotton Brook 0 0 h -
Severn Trent Water NORMANTON - CUTTLEBROOK CLOSE (CSO) Cuttle Brook 0 0 h -
Severn Trent Water PEAR TREE - PEAR TREE RD (CSO) Cotton Brook 0 0 h -
Severn Trent Water DERBY - GREEN LANE/MACKLIN STREET (CSO) Markeaton Brook 0 0 h 66 h
Severn Trent Water DERBY - FRIAR GATE/VICTORIA STREET (CSO) Markeaton Brook 0 0 h -

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

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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