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Pontefract, Castleford and Knottingley - 2025 Sewage

Polluted by sewage 2,525 hours in 2025 , monitoring offline 7,396 hours , potential overflows 69 hours

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

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View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Pontefract, Castleford and Knottingley 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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Constituencies near Pontefract, Castleford and Knottingley

Daily Data

Jan - 593 hours
Feb - 8 hours , 112 offline
Mar - 9 hours , 150 offline
Apr - 2 hours , 27 potential
May - 17 hours , 42 potential
Jun - 9 hours , 1,440 offline
Jul - 92 hours , 1,189 offline
Aug - 21 hours , 744 offline
Sept - 229 hours , 720 offline
Oct - 97 hours , 744 offline
Nov - 696 hours , 720 offline
Dec - 747 hours , 744 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 52 459 h 36m -
Yorkshire Water CARLETON/NO 2 STW River Little Went 39 280 h 48m -
Yorkshire Water SOWGATE LANE/CSO Wash Dike 47 220 h 12m -
Yorkshire Water CARLETON/NO 2 STW River Little Went 56 196 h 25m 69 h
Yorkshire Water KNOTTINGLEY MARSH LN/CSO River Aire 20 177 h 48m -
Yorkshire Water KNOTTINGLEY MARSH LN/CSO River Aire 29 148 h 24m -
Yorkshire Water CASTLEFORD RD/CSO Wain Dike Beck 25 121 h 14m -
Yorkshire Water CASTLEFORD ROAD/CSO Wain Dike Beck 26 115 h 31m -
Yorkshire Water STATION ROAD ALTOFTS/CSO Ashfield Beck 33 105 h 16m -
Yorkshire Water SOWGATE LANE/CSO Wash Dike 29 93 h 5m -
Yorkshire Water AIREDALE/STW River Aire 39 82 h 25m 180 h
Yorkshire Water KNOTTINGLEY COMMON LN/CSO Town Dyke 31 81 h 10m -
Yorkshire Water WHELDON ROAD/CSO River Aire 26 66 h 58m 263 h
Yorkshire Water FERRYBRIDGE/CSO Fryston Beck 18 65 h 45m -
Yorkshire Water GLASS HOUGHTON/CSO Carr Beck 22 49 h 38m -
Yorkshire Water CASTLEFORD/STW River Aire 18 42 h 36m -
Yorkshire Water BONDGATE/CSO Wash Dike 21 41 h 17m -
Yorkshire Water KNOTTINGLEY A1/CSO Aire 18 39 h 28m -
Yorkshire Water FRYSTON/CSO River Aire 7 26 h 18m -
Yorkshire Water ALTOFTS CHURCH ROAD/CSO Choke Churl Beck 15 23 h 47m -
Yorkshire Water ALL SAINTS CHURCH/CSO River Aire 15 22 h 57m -
Yorkshire Water WHITWOOD/CSO Willowbridge Beck 5 19 h 5m -
Yorkshire Water AKETON ROAD CUTSYKE/CSO Carr Beck 15 18 h 34m -
Yorkshire Water AIREDALE/STW River Aire 9 14 h 56m 1,415 h
Yorkshire Water WHELDALE FARM/CSO River Aire 9 7 h 23m -
Yorkshire Water JAMES STREET/CSO River Aire 7 4 h 36m -
Yorkshire Water Unknown Unknown 0 0 h 5,537 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.