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Pontefract, Castleford and Knottingley - Live Sewage

Polluted by sewage 1,909 hours in 2026 , monitoring offline 5,274 hours , potential overflows 189 hours so far..

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

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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 Pontefract, Castleford and Knottingley 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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Constituencies near Pontefract, Castleford and Knottingley

Daily Data

Jan - 497 hours , 0 potential
Feb - 1,247 hours , 63 potential
Mar - 37 hours , 125 potential
Apr - 30 hours , 720 offline
May - 96 hours , 744 offline
Jun - 0 hours , 720 offline
Jul - 0 hours , 744 offline
Aug - 0 hours , 174 offline
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Yorkshire Water NORMANTON/STW River Calder 32 454h 37m -
Yorkshire Water CARLETON/NO 2 STW River Little Went 26 234h 17m -
Yorkshire Water KNOTTINGLEY MARSH LN/CSO River Aire 25 206h 8m -
Yorkshire Water SOWGATE LANE/CSO Wash Dike 18 155h 14m -
Yorkshire Water ALTOFTS CHURCH ROAD/CSO Choke Churl Beck 11 150h 22m 189 h
Yorkshire Water CARLETON/NO 2 STW River Little Went 24 147h 28m -
Yorkshire Water CASTLEFORD RD/CSO Wain Dike Beck 14 131h 40m -
Yorkshire Water CASTLEFORD ROAD/CSO Wain Dike Beck 14 94h 38m 11 h
Yorkshire Water KNOTTINGLEY COMMON LN/CSO Town Dyke 17 89h 58m 0 h
Yorkshire Water STATION ROAD ALTOFTS/CSO Ashfield Beck 15 87h 8m 0 h
Yorkshire Water WHELDALE FARM/CSO River Aire 15 37h 14m -
Yorkshire Water CASTLEFORD/STW River Aire 5 23h 13m 0 h
Yorkshire Water AIREDALE/STW River Aire 13 17h 5m -
Yorkshire Water FERRYBRIDGE/CSO Fryston Beck 7 16h 43m 0 h
Yorkshire Water SOWGATE LANE/CSO Wash Dike 5 16h 6m -
Yorkshire Water AIREDALE/STW River Aire 3 10h 14m -
Yorkshire Water WHELDON ROAD/CSO River Aire 6 7h 39m -
Yorkshire Water ALL SAINTS CHURCH/CSO River Aire 5 6h 53m -
Yorkshire Water GLASS HOUGHTON/CSO Carr Beck 6 5h 6m -
Yorkshire Water BONDGATE/CSO Wash Dike 2 4h 50m -
Yorkshire Water KNOTTINGLEY A1/CSO Aire 3 4h 18m -
Yorkshire Water JAMES STREET/CSO River Aire 7 3h 22m -
Yorkshire Water AKETON ROAD CUTSYKE/CSO Carr Beck 4 2h 59m -
Yorkshire Water KNOTTINGLEY MARSH LN/CSO River Aire 1 1h 10m -
Yorkshire Water FRYSTON/CSO River Aire 1 1h 9m -
Yorkshire Water WHITWOOD/CSO Willowbridge Beck 0 0h -
Yorkshire Water Unknown Unknown 0 0h 5,262 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.