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Halifax - 2025 Sewage

Polluted by sewage 4,348 hours in 2025 , monitoring offline 23,997 hours , potential overflows 1,241 hours

© OpenStreetMap contributors
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 Halifax 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 - 876 hours , 844 offline
Feb - 49 hours , 1,544 offline
Mar - 1 hours , 1,377 offline
Apr - 16 hours , 0 potential
May - 21 hours , 2,976 offline
Jun - 46 hours , 2,285 offline
Jul - 211 hours , 92 potential
Aug - 5 hours , 657 potential
Sept - 340 hours , 40 potential
Oct - 311 hours , 28 potential
Nov - 918 hours , 253 potential
Dec - 1,547 hours , 143 potential
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Yorkshire Water HEBBLE LANE/CSO Hebble Brook 92 847h 6m -
Yorkshire Water HALIFAX COPLEY/STW River Calder And Hebble Brook 63 615h 41m -
Yorkshire Water NEW INN WEST STREET/CSO River Ryburn 66 440h 34m -
Yorkshire Water DARK LANE/NO 2 CSO River Calder 57 416h 31m 1,524 h
Yorkshire Water SALTERHEBBLE/STW/6XDWF OVERFLOW River Calder And Hebble Brook 87 380h 52m -
Yorkshire Water SALTERHEBBLE/STW/3XDWF OVERFLOW River Calder And Hebble Brook 45 221h 2m -
Yorkshire Water WEST STREET/CSO River Ryburn 72 210h 54m -
Yorkshire Water HIGH ROYD TOWPATH/CSO River Calder 30 179h 46m -
Yorkshire Water BACK WHARF STREET/CSO River Calder 18 161h 40m 778 h
Yorkshire Water WOODFALL SHELF EAST/2 CSO Brow Lane Sewer 29 127h 52m 335 h
Yorkshire Water RAGLAN STREET/CSO Hebble Brook 60 113h 48m -
Yorkshire Water WHARFE HOUSE/CSO River Calder 52 109h 49m -
Yorkshire Water HEBBLE BROOK/CSO Hebble Brook 33 88h 20m -
Yorkshire Water LEE LANE/STW Shibden Beck 35 86h 6m -
Yorkshire Water JUMPLES/CSO Hebble Brook 36 59h 22m -
Yorkshire Water SOWERBY NEW ROAD/CSO River Calder 45 56h 16m -
Yorkshire Water WAKEFIELD ROAD 90/CSO Calder+Hebble Navigation Canal 29 52h 40m -
Yorkshire Water DENE PLACE/NO 2 CSO Hebble Brook 20 36h 38m -
Yorkshire Water MOUNT PELLON/CSO Hebble Brook Culverted 38 35h -
Yorkshire Water LUMB CLOUGH/CSO River Ryburn 11 19h 41m 100 h
Yorkshire Water SOWERBY BRIDGE/CSO River Calder 8 19h 40m 40 h
Yorkshire Water DODGEHOLME/CSO Hebble Brook 11 15h 18m -
Yorkshire Water OVENDEN ROAD/CSO Ovenden Brook 8 12h 3m -
Yorkshire Water EDGE END LANE/NO 2 CSO Blackshaw Beck 11 11h 40m 157 h
Yorkshire Water TOWN HALL STREET/CSO River Calder 6 7h 17m -
Yorkshire Water HOLDSWORTH ROAD/NO 2 CSO Strines Beck 4 6h 53m 1,306 h
Yorkshire Water PEAR TREE HOLLINS/CSO River Calder 9 5h 18m 272 h
Yorkshire Water KING STREET/CSO Hebble Brook 5 3h 15m -
Yorkshire Water SEDBURGH ROAD/CSO Hebble Brook 2 2h 46m 0 h
Yorkshire Water BOY LANE/CSO Hebble Brook 2 1h 55m -
Yorkshire Water SHIBDEN PARK/CSO Red Beck 2 1h 1m -
Yorkshire Water LEE BRIDGE/CSO Ovenden Brook 1 0h 35m 5,816 h
Yorkshire Water FARRAR MILL LANE/CSO Hebble Brook 1 0h 23m -
Yorkshire Water ROCHDALE CANAL/CSO River Calder 1 0h 15m -
Yorkshire Water PELLON LANE/CSO Hebble Brook Culverted 1 0h 10m -
Yorkshire Water WATSON MILL LANE/CSO River Ryburn 2 0h 9m 6,303 h
Yorkshire Water LONGBOTTOM BRIDGE/CSO River Calder 0 0h -
Yorkshire Water STANNARY HALIFAX/CSO Hebble Brook 0 0h -
Yorkshire Water SOWERBY CROFT LANE/2 CSO River Ryburn 0 0h -
Yorkshire Water STANSFIELD MILL/CSO Nether Ends Beck 0 0h 6,665 h
Yorkshire Water LUMBROOK/NO 2 CSO Lumb Brook Culverted 0 0h 1,937 h
Yorkshire Water COPLEY VILLAGE/NO 2 SPS River Calder 0 0h -
Yorkshire Water WARLEY CLOUGH/CSO Warley Clough Dams 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.