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Ossett and Denby Dale - Live Sewage

Polluted by sewage 5,549 hours in 2026 , monitoring offline 20,268 hours , potential overflows 3,596 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 Ossett and Denby Dale 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.

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Daily Data

Jan - 1,810 hours , 745 potential
Feb - 3,209 hours , 672 potential
Mar - 395 hours , 1,039 potential
Apr - 7 hours , 720 potential
May - 126 hours , 419 potential
Jun - 0 hours
Jul - 0 hours
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Yorkshire Water ALBION MILLS/CSO River Calder 39 567h 8m -
Yorkshire Water PORTOBELLO/CSO Pugney'S Drain 43 512h 46m -
Yorkshire Water GREAT CLIFF/SPS Dennington Beck 27 389h 3m -
Yorkshire Water WEST BRETTON/NO 2 STW Bretton Brook 35 383h 4m -
Yorkshire Water HORBURY/STW River Calder 29 369h 34m -
Yorkshire Water BRIDGE ROAD/CSO Smithy Brook 43 356h 24m -
Yorkshire Water CUCKSTOOL BOTTOM/CSO River Dearne 34 333h 52m -
Yorkshire Water CLAYTON WEST/STW River Dearne 34 302h 29m -
Yorkshire Water PARK MILL/CSO River Dearne 29 241h 6m -
Yorkshire Water DEWSBURY/STW/3XDWF OVERFLOW River Calder 26 218h 50m -
Yorkshire Water WOOLLEY VILLAGE/STW/3XDWF OVERFLOW Totty Beck 27 216h 25m -
Yorkshire Water HORBURY BRIDGE/NO 2 CSO River Calder 33 208h 53m 0 h
Yorkshire Water SPRINGFIELD LANE/CSO Dean Bottom Dike 23 167h 6m -
Yorkshire Water BIRDS EDGE/CSO River Dearne 11 162h 18m 295 h
Yorkshire Water BROOMHALL EMLEY/CSO Little Dike 18 159h 43m -
Yorkshire Water STANDBRIDGE LANE/CSO Owler Beck 23 145h 2m -
Yorkshire Water HORBURY/STW/6XDWF OVERFLOW River Calder 21 139h 39m 0 h
Yorkshire Water SKELMANTHORPE/CSO Park Gate Dike 16 124h 46m 3 h
Yorkshire Water HEALEY ROAD OSSETT/CSO River Calder 21 101h 54m -
Yorkshire Water BROOMFIELD LANE/NO 2 CSO Out Lane Dyke 9 92h 56m -
Yorkshire Water DEWSBURY/STW/6XDWF OVERFLOW River Calder 8 73h 31m -
Yorkshire Water MONTAGUE STREET/CSO Oakenshaw Beck 9 60h 38m -
Yorkshire Water NETHERTON/CSO Pits Beck Culverted 18 59h 52m 0 h
Yorkshire Water PILDACRE LANE/NO 2 CSO Pildacre Mill Beck 12 54h 21m 6 h
Yorkshire Water LUPSET/CSO Lupset Beck 11 48h 46m 0 h
Yorkshire Water MANOR ROAD/CSO Range Dike 4 25h 47m -
Yorkshire Water BAPTIST LANE/CSO Spring Mill Beck 11 14h 29m 9 h
Yorkshire Water CHARLES STREET/NO 2 CSO Old Mill Stream 4 9h 49m -
Yorkshire Water OSSETT TOWNGATE/NO 2 CSO Spring Mill Beck 3 2h 53m -
Yorkshire Water INNFOLD FARM 3/NO 2 CSO Bretton Brook 1 2h 44m -
Yorkshire Water THUNDERBRIDGE/NO 2 CSO Shepley Dike 2 1h 27m -
Yorkshire Water PLEDWICK/CSO Owler Beck Via Surface Wtr Sw 2 1h 23m -
Yorkshire Water BACK LANE/CSO Clvrt Toad Hole Dike 1 0h 29m 857 h
Yorkshire Water DAMHILL/NO 2 CSO Shepley Dike 1 0h 10m -
Yorkshire Water SWALLOWS NEST/CSO River Calder 0 0h 98 h
Yorkshire Water NEWMILLERDAM/CSO Owler Beck/Newmillerdam 0 0h -
Yorkshire Water LOCK STREET/CSO River Calder 0 0h 3,299 h
Yorkshire Water WOOLLEY VILLAGE/STW/6XDWF OVERFLOW Totty Beck 0 0h -
Yorkshire Water LOW COMMON/CSO Varies With Outlet 0 0h -
Yorkshire Water LANE HACKINGS GREEN/CSO Thorpe Dike 0 0h -
Yorkshire Water GAWTHORPE MAIN ST/CSO Bushy Beck 0 0h -
Yorkshire Water XXXFOLD FARM 4/CSO Bretton Brook 0 0h 2,787 h
Yorkshire Water WAKEFIELD RD SCISSET/CSO River Dearne 0 0h 3,299 h
Yorkshire Water INNFOLD FARM 1/CSO River Dearne 0 0h 2,787 h
Yorkshire Water DENBY DALE ROAD/CSO River Calder 0 0h -
Yorkshire Water OSSETT WAKEFIELD RD/2 CSO Clvrt Springfield Beck 0 0h -
Yorkshire Water HORBURY ROAD M1/CSO Lupset Beck 0 0h -
Yorkshire Water THORNHILL ROAD/CSO Smithy Brook 0 0h 1,544 h
Yorkshire Water HAIGH/STW River Dearne 0 0h -
Yorkshire Water SPRING GROVE/CSO River Dearne 0 0h -
Yorkshire Water DOGLEY/CSO Woodsome Beck 0 0h 3,299 h
Yorkshire Water AGBRIGG GARAGE/CSO Oakenshaw Beck 0 0h -
Yorkshire Water CHAPELTHORPE/CSO Chapelthorpe Bank Owler B 0 0h 2,787 h
Yorkshire Water CATCH BAR/CSO River Dearne 0 0h -
Yorkshire Water XXXFOLD FARM 2/CSO Bretton Brook 0 0h 2,787 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.