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North East Derbyshire - 2025 Sewage

Polluted by sewage 7,948 hours in 2025 , monitoring offline 25,551 hours , potential overflows 389 hours

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

Which Year?

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View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in North East 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 - 1,461 hours , 1,506 offline
Feb - 222 hours , 141 potential
Mar - 10 hours , 2,976 offline
Apr - 6 hours , 2,880 offline
May - 33 hours , 38 potential
Jun - 87 hours , 89 potential
Jul - 283 hours , 120 potential
Aug - 1 hours , 1,488 offline
Sept - 304 hours , 1,125 offline
Oct - 190 hours , 1,563 offline
Nov - 2,973 hours , 2,029 offline
Dec - 2,373 hours , 1,666 offline
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Severn Trent Water ASHOVER STW (CSO) River Amber 91 992h 53m -
Yorkshire Water STAVELEY/STW River Doe Lea 81 955h 58m -
Severn Trent Water ASHOVER STW (SSTO) River Amber 49 864h 37m 38 h
Severn Trent Water ASHOVER STW (SSTO) River Amber 37 790h 56m -
Yorkshire Water DANESMOOR/NO 3 CSO River Rother 47 573h 45m -
Yorkshire Water RENISHAW/STW Smithy Brook 52 494h 39m -
Severn Trent Water CLAY CROSS STW (SSTO) Smithy Brook 39 323h 27m -
Yorkshire Water AVENUE FARM/CSO River Rother 54 270h 29m -
Severn Trent Water CLAY CROSS STW (SSTO) Smithy Brook 21 235h 32m -
Severn Trent Water ASHOVER STW (CSO) River Amber 19 231h 51m -
Yorkshire Water HOLMESFIELD/STW Holmesfield Brook 34 193h 6m -
Yorkshire Water UNSTONE/CSO River Drone 27 178h 32m -
Yorkshire Water DRONFIELD/STW River Drone 37 172h 49m -
Severn Trent Water CLAY CROSS - BACON SPRINGS (CSO) Smithy Brook 36 171h 28m -
Yorkshire Water BARLOW/STW Barlow Brook 34 148h 3m -
Severn Trent Water CLAY CROSS - BACON SPRINGS (CSO) Smithy Brook 20 141h 8m -
Severn Trent Water KELSTEDGE STW (CSO) River Amber 37 135h 22m 6 h
Yorkshire Water TROUGHBROOK ROAD/NO 2 CSO Trough Brook 32 128h 23m -
Yorkshire Water LEA ROAD MANSE/CSO River Rother 12 95h 6m 86 h
Yorkshire Water TUPTON/STW Redleadmill Brook 19 86h 1m 220 h
Yorkshire Water HIGH HAZEL COURT/CSO River Rother 21 75h 19m 410 h
Yorkshire Water BRIDGE INN FORD/CSO Moss 18 73h 3m -
Severn Trent Water KELSTEDGE STW (CSO) River Amber 17 71h 56m -
Yorkshire Water BIRCHES LANE/CSO River Moss 19 71h 13m -
Yorkshire Water DRONFIELD TIP/CSO River Drone 14 68h 59m 123 h
Severn Trent Water ASHOVER - OVERTON HALL STW (CSO) Cockwell Sough 23 64h 28m 2 h
Yorkshire Water NORWOOD/CSO County Dyke To River Rother 16 59h 52m -
Yorkshire Water WORKS ROAD/CSO River Rother 11 49h 34m 3,693 h
Yorkshire Water HIPPER HALL/CSO River Hipper 18 49h 22m 141 h
Yorkshire Water BRAMLEY HALL FM/CSO River Moss 4 48h 47m -
Yorkshire Water STATION RD STAVELEY/CSO Trough Brook River Rother 3 27h 13m -
Severn Trent Water ASHOVER - OVERTON HALL STW (CSO) Cockwell Sough 5 21h 9m -
Yorkshire Water WESTHORPE/NO 2 CSO Park Brook 9 12h 21m -
Yorkshire Water ECKINGTON/CSO River Moss 14 11h 39m -
Yorkshire Water HALL TERRACE/CSO River Rother 14 11h 1m -
Yorkshire Water DRONFIELD YARD/CSO River Drone 10 10h 51m -
Yorkshire Water DRONFIELD MILL LANE/CSO River Drone 6 9h 20m -
Yorkshire Water CUTTHORPE ROAD/CSO Holme Brook 3 8h 15m -
Yorkshire Water SISCAR COTTAGE/CSO River Drone 7 4h 50m -
Yorkshire Water BULLS HEAD/CSO River Hipper 2 4h 24m 84 h
Yorkshire Water YEW TREE ESTATE/NO 1 CSO River Hipper 5 3h 18m -
Yorkshire Water GRASSHILL FARM/CSO River Rother 2 2h 43m -
Yorkshire Water NORTH WINGFIELD/CSO River Rother 5 1h 59m -
Yorkshire Water RIDGEWAY WELL/CSO Moss 2 1h 43m -
Yorkshire Water RIDGEWAY MAIN ROAD/CSO Moss 2 0h 40m -
Yorkshire Water CROW LANE MEMORIAL/CSO River Drone 1 0h 14m -
Yorkshire Water ROTHERSIDE ROAD/CSO River Moss 1 0h 14m 4,637 h
Yorkshire Water HARDHURST ROAD/CSO River Drone 0 0h -
Severn Trent Water CHESTERFIELD-8_WINDERMERE RD (CSO) Ditch 0 0h 29 h
Yorkshire Water MARKET ST ECKINGTON/CSO Moss 0 0h -
Yorkshire Water SWAN INN RIDGEWAY/CSO Moss 0 0h 5,620 h
Yorkshire Water WEST HANDLEY/NO 2 CSO River Rother 0 0h 8,296 h
Yorkshire Water ALBERT ROAD/CSO River Rother 0 0h -
Yorkshire Water CROW LANE FIELD/CSO River Drone 0 0h -
Severn Trent Water CHESTERFIELD-8_WINDERMERE RD (CSO) Ditch 0 0h 36 h
Yorkshire Water DRONFIELD LEA ROAD/CSO River Drone 0 0h -
Yorkshire Water OLD WHIT HIGH STREET/CSO River Rother 0 0h 2,513 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

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.