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Mid Derbyshire - 2025 Sewage

Polluted by sewage 4,065 hours in 2025 , monitoring offline 5,814 hours , potential overflows 109 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 Mid Derbyshire 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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Daily Data

Jan - 1,250 hours , 109 potential
Feb - 4 hours , 1,368 offline
Mar - 85 hours , 349 offline
Apr - 36 hours , 282 offline
May - 42 hours , 374 offline
Jun - 7 hours , 347 offline
Jul - 60 hours , 78 offline
Aug - 6 hours , 72 offline
Sept - 353 hours , 135 offline
Oct - 163 hours , 122 offline
Nov - 1,195 hours , 457 offline
Dec - 843 hours , 53 offline
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Severn Trent Water KIRK LANGLEY STW (SSTO) Flagshaw Brook 54 561h 18m 66 h
Severn Trent Water DUFFIELD STW (SSTO) River Derwent 29 402h 17m -
Severn Trent Water DUFFIELD STW (SSTO) River Derwent 33 332h 28m 12 h
Severn Trent Water DERBY STW (SSTO) River Derwent 33 279h 54m 107 h
Severn Trent Water BELPER STW (SSTO) River Derwent 29 235h 56m -
Severn Trent Water SPONDON - STONEY GATE RD (CSO) River Derwent 38 186h 55m -
Severn Trent Water DERBY STW (SSTO) River Derwent 18 150h 21m -
Severn Trent Water BELPER STW (SSTO) River Derwent 17 138h 56m -
Severn Trent Water SPONDON - DERBY RD/MERCHANT AVENUE (CSO) River Derwent 32 122h 57m 355 h
Severn Trent Water KIRK LANGLEY STW (SSTO) Flagshaw Brook 15 122h 13m -
Severn Trent Water DERBY - KEDLESTON RD (CSO) River Derwent 31 115h 9m 201 h
Severn Trent Water WESTON UNDERWOOD STW (SSTO) Greenlane Brook 15 102h 29m -
Severn Trent Water DALE ABBEY (SSO) Sow Brook 33 98h 33m -
Severn Trent Water HAZELWOOD - NETHER LANE (SSO) Of River Ecclesbourne 9 82h -
Severn Trent Water HAZELWOOD - NETHER LANE (SSO) Of River Ecclesbourne 10 81h 43m -
Severn Trent Water DUFFIELD - TOWN STREET (THE LODGE) (CSO) River Derwent 24 80h 34m 0 h
Severn Trent Water BELPER - BABBINGTON HOSPITAL (SSO) River Derwent 24 63h 56m 339 h
Severn Trent Water BORROWASH - NEWBOLD AVENUE (CSO) Ock Brook 20 54h 24m 24 h
Severn Trent Water BELPER - BARGATE ROAD (CSO) River Derwent 9 54h 22m -
Severn Trent Water ALLESTREE - MARKEATON LANE (CSO) Markeaton Brook 11 51h 43m 18 h
Severn Trent Water DUFFIELD - MILFORD ROAD (CSO) River Derwent 4 50h 37m -
Severn Trent Water MILFORD - DERBY ROAD (CSO) River Derwent 22 46h 41m 12 h
Severn Trent Water BELPER - BRIDGEFOOT (CSO) River Derwent 14 43h 49m -
Severn Trent Water BELPER - BRIDGE HILL/BELPER LANE (CSO) River Derwent 21 43h 48m 112 h
Severn Trent Water STANLEY - GLEBE CRESCENT (CSO) Stanley Brook 16 40h 53m 118 h
Severn Trent Water WESTON UNDERWOOD STW (SSTO) Greenlane Brook 7 36h 30m -
Severn Trent Water SPONDON - DALE RD/SANDRINGHAM DR (CSO) River Derwent 18 31h 32m 40 h
Severn Trent Water BELPER - BRIDGE ST (F/BALL GROUND) (CSO) River Derwent 12 31h 24m 60 h
Severn Trent Water SPONDON - ANGLERS LANE XX/XX (CSO) River Derwent 5 26h 56m -
Severn Trent Water DERBY - KEDLESTON RD (CSO) River Derwent 12 26h 10m -
Severn Trent Water MILFORD - PLAY GROUND (SSO) River Derwent 16 24h 21m 252 h
Severn Trent Water WEST HALLAM - ST WILFRIDS ROAD (CSO) Stanley Brook 12 21h 36m -
Severn Trent Water ALLESTREE - KEDLESTON RD (CSO) Markeaton Brook 19 20h 44m -
Severn Trent Water DUFFIELD - TOWN STREET (THE LODGE) (CSO) River Derwent 6 20h 25m -
Severn Trent Water BELPER - BROADHOLM (SSO) River Derwent 7 20h 10m 1,180 h
Severn Trent Water DALE ABBEY (SSO) Sow Brook 7 18h 23m -
Severn Trent Water BELPER - BRIDGE ST (F/BALL GROUND) (CSO) River Derwent 4 16h 49m 54 h
Severn Trent Water BELPER - BRIDGE STREET XXX/XXX (CSO) River Derwent 23 16h 20m -
Severn Trent Water MILFORD - MAIN ROAD (DERBYSHIRE) (SSO) River Derwent 9 16h 4 h
Severn Trent Water SPONDON - NOTTINGHAM ROAD (CSO) River Derwent 12 15h 42m 61 h
Severn Trent Water BELPER - BARGATE ROAD (CSO) River Derwent 3 15h 1m -
Severn Trent Water BORROWASH - BYPASS (CSO) Ock Brook 17 14h 25m 26 h
Severn Trent Water BELPER - BRIDGEFOOT (CSO) River Derwent 4 13h 20m -
Severn Trent Water SPONDON - STONEY GATE RD (CSO) River Derwent 7 13h 3m -
Severn Trent Water BELPER - BABBINGTON HOSPITAL (SSO) River Derwent 6 11h 46m -
Severn Trent Water MILFORD - DERBY ROAD (CSO) River Derwent 5 10h 47m -
Severn Trent Water STANLEY COMMON - COMMON LANE (CSO) Stalney Brook 11 9h 13m -
Severn Trent Water ALLESTREE - DUFFIELD ROAD (SSO) River Derwent 3 9h 7m 30 h
Severn Trent Water KIRK LANGLEY - MOOR LANE (CSO) Mackworth Brook 4 8h 35m 130 h
Severn Trent Water MILFORD - SPORTS GROUND (SSO) River Derwent 7 8h 6m 12 h
Severn Trent Water BORROWASH - NEWBOLD AVENUE (CSO) Ock Brook 1 7h 35m -
Severn Trent Water STANLEY - GLEBE CRESCENT (CSO) Stanley Brook 3 7h 30m -
Severn Trent Water SPONDON - DERBY RD/MERCHANT AVENUE (CSO) River Derwent 2 6h 26m 18 h
Severn Trent Water ALLESTREE - MARKEATON LANE (CSO) Markeaton Brook 1 5h 53m -
Severn Trent Water SPONDON - ANGLERS LANE XX/XX (CSO) River Derwent 1 5h 17m -
Severn Trent Water BORROWASH - BYPASS (CSO) Ock Brook 1 4h 50m -
Severn Trent Water SPONDON - DALE RD/SANDRINGHAM DR (CSO) River Derwent 3 4h 18m -
Severn Trent Water DERBY - KEDLESTON RD/MAXWELL AVE (CSO) Northern Flood Culvert 3 3h 34m -
Severn Trent Water WEST HALLAM - ST WILFRIDS ROAD (CSO) Stanley Brook 1 2h 55m -
Severn Trent Water BELPER - DERBY ROAD/GIBFIELD LANE (CSO) Coppice Brook 8 2h 46m 454 h
Severn Trent Water MILFORD - PLAY GROUND (SSO) River Derwent 4 2h 21m -
Severn Trent Water BELPER - BRIDGE STREET/FIELD LANE (CSO) River Derwent 8 2h 20m -
Severn Trent Water BELPER - BRIDGE STREET XXX/XXX (CSO) River Derwent 5 2h 10m -
Severn Trent Water LITTLE EATON - ALFRETN RD/WINDY LA (CSO) Bottle Brook 1 1h 52m 30 h
Severn Trent Water BELPER รขโ‚ฌโ€œ KILBOURNE ROAD (CSO) Coppice Brook 4 1h 52m -
Severn Trent Water ALLESTREE - KEDLESTON RD (CSO) Markeaton Brook 1 0h 52m -
Severn Trent Water SPONDON - NOTTINGHAM ROAD (CSO) River Derwent 1 0h 46m -
Severn Trent Water BELPER - BRIDGE HILL/BELPER LANE (CSO) River Derwent 2 0h 39m -
Severn Trent Water BELPER - MARSH LANE 2 (CSO) Coppice Brook 1 0h 38m 76 h
Severn Trent Water BELPER - DERBY ROAD (EX-SILKOLENE) (CSO) River Derwent 1 0h 15m 187 h
Severn Trent Water BELPER - DERBY ROAD/GIBFIELD LANE (CSO) Coppice Brook 1 0h 14m -
Severn Trent Water BELPER - THE FLEET XX (CSO) River Derwent 1 0h 1m 317 h
Severn Trent Water BELPER - BRIDGE STREET/FIELD LANE (CSO) River Derwent 0 0h -
Severn Trent Water LITTLE EATON - ALFRETON RD (CSO) Bottle Brook 0 0h -
Severn Trent Water BELPER - DERBY ROAD (EX-SILKOLENE) (CSO) River Derwent 0 0h -
Severn Trent Water MILFORD - FOUNDRY LANE PS (CSO) River Derwent 0 0h -
Severn Trent Water BELPER - MARSH LANE 3 (CSO) Coppice Brook 0 0h 121 h
Severn Trent Water BELPER - WHEELDON AVENUE (CSO) Coppice Brook 0 0h -
Severn Trent Water DUFFIELD - CASTLE ORCHARD (SSO) River Derwent 0 0h -
Severn Trent Water BELPER - MARSH LANE 2 (CSO) Coppice Brook 0 0h -
Severn Trent Water BELPER - WHEELDON AVENUE (CSO) Coppice Brook 0 0h 12 h
Severn Trent Water BELPER รขโ‚ฌโ€œ KILBOURNE ROAD (CSO) Coppice Brook 0 0h -
Severn Trent Water BELPER - BELPER LANE (CSO) River Derwent 0 0h 123 h
Severn Trent Water BELPER - THE FLEET XX (CSO) River Derwent 0 0h -
Severn Trent Water ALLESTREE - DUFFIELD ROAD (SSO) River Derwent 0 0h -
Severn Trent Water LITTLE EATON - ALFRETN RD/WINDY LA (CSO) Bottle Brook 0 0h -
Severn Trent Water MILFORD - SPORTS GROUND (SSO) River Derwent 0 0h -
Severn Trent Water QUARNDON - CHURCH ROAD XXX (CSO) Markeaton Brook 0 0h 58 h
Severn Trent Water BELPER - MARSH LANE 3 (CSO) Coppice Brook 0 0h -
Severn Trent Water DUFFIELD - MILFORD ROAD (CSO) River Derwent 0 0h -
Severn Trent Water BELPER - MARSH LANE 4 (CSO) Coppice Brook 0 0h 24 h
Severn Trent Water BELPER - BELPER LANE (CSO) River Derwent 0 0h 777 h
Severn Trent Water DERBY - KEDLESTON RD/MAXWELL AVE (CSO) Northern Flood Culvert 0 0h -
Severn Trent Water MILFORD - MAIN ROAD (DERBYSHIRE) (SSO) River Derwent 0 0h 10 h
Severn Trent Water BELPER - KING STREET/STRUTT STREET (CSO) Coppice Brook 0 0h -
Severn Trent Water BELPER - MARSH LANE 4 (CSO) Coppice Brook 0 0h -
Severn Trent Water BORROWASH - HAWTHORNE AVE (CSO) Ock Brook 0 0h -
Severn Trent Water QUARNDON - CHURCH ROAD XXX (CSO) Markeaton Brook 0 0h -
Severn Trent Water STANLEY COMMON - COMMON LANE (CSO) Stalney Brook 0 0h -
Severn Trent Water MILFORD - FOUNDRY LANE PS (CSO) River Derwent 0 0h 492 h
Severn Trent Water LITTLE EATON - DUFFIELD ROAD (SSO) Bottle Brook 0 0h -
Severn Trent Water KIRK LANGLEY - MOOR LANE (CSO) Mackworth Brook 0 0h -
Severn Trent Water BELPER - BROADHOLM (SSO) River Derwent 0 0h -
Severn Trent Water LITTLE EATON - DUFFIELD ROAD (SSO) Bottle Brook 0 0h -
Severn Trent Water BELPER - MARSH LANE 1 (CSO) Coppice Brook 0 0h -
Severn Trent Water BELPER - MARSH LANE 1 (CSO) Coppice 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.