Colne Valley - Live Sewage

Polluted by sewage 5,099 hours in 2026 , monitoring offline 51,361 hours , potential overflows 815 hours so far..

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

Which Year?

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✔ means we have live data (𝑥 if not)

View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Colne Valley 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 Colne Valley in 2026

Sewage5,099 hours
Monitoring offline51,361 hours
Potential pollution815 hours
Storm overflows59

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Daily Data

Jan - 1,181 hours , 137 potential
Feb - 2,785 hours , 526 potential
Mar - 288 hours , 5,962 offline
Apr - 10 hours , 5,760 offline
May - 93 hours , 6,069 offline
Jun - 0 hours , 5,040 offline
Jul - 0 hours , 5,560 offline
Aug - 215 hours , 151 potential
Sept - 210 hours , 4,714 offline
Oct - 313 hours , 3,624 offline
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Yorkshire Water LONGLANDS ROAD/NO 2 CSO River Holme 37 807h 59m -
Yorkshire Water MELTHAM/STW Mag Brook 68 772h 33m -
Yorkshire Water SINKING WOOD/NO 2 CSO New Mill Dike 39 519h 25m -
Yorkshire Water NEILEY/NO 2 STW River Holme 30 419h -
Yorkshire Water QUEENS SQUARE/CSO River Holme 46 373h 16m 26 h
Yorkshire Water HONLEY HUDDSFLD RD/2 CSO River Holme 47 294h 11m -
Yorkshire Water THIRSTIN ROAD/NO 2 CSO Mag Brook 42 260h 6m -
Yorkshire Water MILNSBRIDGE/CSO Longwood Brook 45 248h 37m 77 h
Yorkshire Water BARBER ROW/NO 2 CSO River Colne 44 200h 59m 0 h
Yorkshire Water GORDON TERRACE/CSO River Colne 42 189h 47m 3 h
Yorkshire Water TITANIC MILLS/CSO River Colne 40 173h 53m 818 h
Yorkshire Water POLE MOOR/CSO Red Lane Dike 21 132h 18m 1 h
Yorkshire Water LEYMOOR ROAD/CSO Longwood Brook 51 105h 57m 10 h
Yorkshire Water FACTORY LANE/CSO River Colne 20 81h 25m 196 h
Yorkshire Water SPA MILLS BRIDGE ST/CSO River Colne 33 68h 51m -
Yorkshire Water CORN MILL/NO 2 CSO River Holme 26 63h 57m -
Yorkshire Water BROCKHOLES LANE/CSO Culv River Holme 4 63h 8m 887 h
Yorkshire Water HEY CLOUGH/CSO Hey Clough 12 62h 2m -
Yorkshire Water WOOD BOTTOM/CSO River Colne 34 49h 16m -
Yorkshire Water HOLME BOTTOM/CSO New Mill Dike 23 26h 35m -
Yorkshire Water BUTT LANE/CSO Rakes Dyke 20 22h 45m 33 h
Yorkshire Water MELTHAM/CSO Meltham Dike 26 21h 12m -
Yorkshire Water TOWNGATE HOLMFIRTH/2 CSO River Holme 14 20h 49m -
Yorkshire Water SPRING WOOD/CSO Jackson Bridge Dike 14 20h 22m 10 h
Yorkshire Water SCAR LANE/CSO River Colne 30 19h 28m -
Yorkshire Water DOBB LANE/NO 2 CSO Stubbin Clough 15 12h 6m -
Yorkshire Water BURN ROAD/CSO Grimescar Dike 16 10h 32m -
Yorkshire Water NEW MILL LIBRARY/CSO New Mill Dike 7 9h 9m -
Yorkshire Water JACKSON BRIDGE/NO 2 CSO Jackson Bridge Dyke 8 7h 53m -
Yorkshire Water LOWER HIRST/CSO Longwood Brook 9 5h 45m -
Yorkshire Water DALE STREET/CSO Longwood Brook 10 5h 42m 36 h
Yorkshire Water MILNS SHAW LANE/NO 2 CSO River Colne 7 5h 34m -
Yorkshire Water ST GEORGES ROAD/NO 2 CSO Jackson Bridge Dike 7 3h 56m -
Yorkshire Water FERNLEA GROVE/CSO River Colne 7 3h 27m -
Yorkshire Water RAMSDEN MILL/CSO River Colne 7 2h 50m -
Yorkshire Water MORLEY LANE/CSO River Colne 7 2h 33m -
Yorkshire Water CAUSEWAY SIDE 13/CSO Hoyle House Brook 4 2h 10 h
Yorkshire Water MEAN BRIDGE/CSO Meltham Dike 4 1h 54m -
Yorkshire Water HOLYWELL MANCH ROAD/CSO Tbc When Permit Issued 2 1h 48m 6,018 h
Yorkshire Water HONLEY NEWTOWN/NO 2 CSO River Holme 7 1h 29m -
Yorkshire Water NEW HEY ROAD/CSO Culverted Longwood Brook 3 1h 19m -
Yorkshire Water HONLEY BRIDGE/NO 2 CSO River Holme 3 0h 59m -
Yorkshire Water BARGATE/NO 2 CSO River Colne 2 0h 45m -
Yorkshire Water STONES LANE WAINGATE/CSO Hoyle House Brook 1 0h 36m -
Yorkshire Water COPLEY BANK/CSO River Colne 1 0h 21m 3,308 h
Yorkshire Water COOPER LANE/NO 2 CSO River Holme 1 0h 14m -
Yorkshire Water PICKFORD STREET/NO 2 CSO River Colne 1 0h 13m 234 h
Yorkshire Water GOLCAR BROOK LANE/CSO River Colne 1 0h 13m -
Yorkshire Water HEPWORTH ROAD/CSO Rakes Dyke 0 0h -
Yorkshire Water KIRKBRIDGE LANE/CSO New Mill Dike 0 0h 6,631 h
Yorkshire Water PENISTONE RD NEW MILL/CSO New Mill Dike 0 0h 6,631 h
Yorkshire Water SWAN BANK/NO 2 CSO River Ribble 0 0h -
Yorkshire Water HOLMBRIDGE MILL/CSO Digley Brook 0 0h -
Yorkshire Water HONLEY EASTGATE/CSO Culv River Holme 0 0h 6,631 h
Yorkshire Water NETTLETON HILL/CSO Clay Wood Brook 0 0h 7,143 h
Yorkshire Water PICKWICK MILL/CSO River Holme 0 0h 6,621 h
Yorkshire Water HOLMFIRTH BRIDGE LN/CSO River Holme 0 0h 208 h
Yorkshire Water THURSTONLAND/CSO River Holme 0 0h 6,631 h
Yorkshire Water CAUSEWAY SIDE 12/CSO Culv'D Hoyle House Brk 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.