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Harrogate and Knaresborough - 2025 Sewage

Polluted by sewage 2,989 hours in 2025 , monitoring offline 42,407 hours , potential overflows 275 hours

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

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You're looking at the totals that we have calculated for sewage in Harrogate and Knaresborough 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 Harrogate and Knaresborough

Daily Data

Jan - 497 hours , 2,620 offline
Feb - 10 hours , 3,238 offline
Mar - 0 hours , 4,761 offline
Apr - 8 hours , 103 potential
May - 50 hours , 44 potential
Jun - 12 hours , 3,600 offline
Jul - 131 hours , 128 potential
Aug - 2 hours , 3,720 offline
Sept - 440 hours , 3,353 offline
Oct - 249 hours , 2,456 offline
Nov - 571 hours , 3,372 offline
Dec - 1,015 hours , 3,805 offline
Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.
Please note: We don't have rainfall data for Wales. If you know where to source it please let us know!
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Yorkshire Water HARROGATE NORTH/STW/3XDWF OVERFLOW Oak Beck 45 328 h 46m -
Yorkshire Water KNARESBOROUGH/STW River Nidd 33 326 h 56m -
Yorkshire Water CRIMPLE LANE/NO 2 CSO Crimple Beck 52 295 h 29m -
Yorkshire Water STAVELEY QUARRY/NO 2 CSO Tanner Beck 29 287 h 23m -
Yorkshire Water SHERWOOD DRIVE/CSO Rud Beck 41 204 h 21m -
Yorkshire Water MANSE LANE 57/CSO River Nidd 47 182 h 19m 297 h
Yorkshire Water HOOKSTONE ROAD/CSO Hookstone Beck 23 130 h 32m -
Yorkshire Water HARROGATE NORTH/STW/6XDWF OVERFLOW Oak Beck 29 93 h 59m -
Yorkshire Water ST MARYS WALK XXX/CSO Oak Beck And Coppice Beck 41 85 h 56m -
Yorkshire Water STRAY ROAD/CSO Hookstone Beck 19 83 h 38m -
Yorkshire Water HOLLINS CLOSE/CSO Nidd And S 13 71 h 1m 29 h
Yorkshire Water JENNY PLAIN BRIDGE/CSO Oak Beck And Coppice Beck 17 58 h 42m 331 h
Yorkshire Water ALMSFORD AVENUE/CSO Crimple Beck 20 57 h 1m 488 h
Yorkshire Water HOTEL MAJESTIC/CSO Oak Beck And Coppice Beck 24 55 h 11m 537 h
Yorkshire Water BLACK SWAN/CSO Crimple Beck Or River Crimple 14 54 h 58m -
Yorkshire Water WATERSIDE 47/CSO Mill Stream 27 53 h 50m 520 h
Yorkshire Water PANNAL BRIDGE/CSO River Crimple Via Sewer 18 48 h 21m -
Yorkshire Water GOLDSBOROUGH/CSO New Cut 33 47 h 13m -
Yorkshire Water HAMBLETON ROAD/CSO Clvrt Bilton Beck 7 41 h 50m 15 h
Yorkshire Water WATERSIDE 48/CSO Mill Stream 23 38 h 36m 128 h
Yorkshire Water CRAGG TOP/CSO River Nidd 8 38 h 11m 147 h
Yorkshire Water ST MARYS WALK 29/CSO Oak Beck And Coppice Beck 23 36 h 24m -
Yorkshire Water THE GRANARY/CSO Nidd And S 4 34 h 14m 18 h
Yorkshire Water ALBERT STREET/CSO Oak Beck And Coppice Beck 26 34 h 12m -
Yorkshire Water ABBEY ROAD/NO 2 CSO River Nidd 17 33 h 11m 576 h
Yorkshire Water FULWITHMILL FARM/NO 2 CSO Crimple Beck 4 27 h 55m -
Yorkshire Water LOW MOOR LANE/CSO Jumwell Beck 6 27 h 1m -
Yorkshire Water BILTON LANE BECK/CSO Bilton Beck 14 26 h 27m 673 h
Yorkshire Water ST MARYS WALK 7/CSO Oak Beck And Coppice Beck 9 24 h 40m -
Yorkshire Water KILLINGHALL/NO 2 CSO Nidd 10 24 h 13m -
Yorkshire Water SPITAL CROFT/CSO River Nidd 13 20 h 13m -
Yorkshire Water HYDE PARK ROAD/CSO Oak Beck And Coppice Beck 28 17 h 44m 78 h
Yorkshire Water STRAWBERRY DALE/CSO Oak Beck And Coppice Beck 17 15 h 31m -
Yorkshire Water OAKDALE AVENUE/CSO Oak Beck 14 15 h -
Yorkshire Water ST MARYS WALK 30/CSO Oak Beck And Coppice Beck 10 13 h 51m 19 h
Yorkshire Water COLD BATH ROAD/CSO Oak Beck And Coppice Beck 2 13 h 9m -
Yorkshire Water FOREST LANE/NO 2 CSO Culverted Star Beck 8 9 h 19m -
Yorkshire Water MONTPELLIER RD27/CSO Oak Beck And Coppice Beck 11 9 h 11m -
Yorkshire Water WATERSIDE 49/CSO River Nidd 12 9 h 1m -
Yorkshire Water HOOKSTONE DRIVE/NO 2 CSO Culverted Rud Beck/Publicsewer 11 7 h 5m 6,106 h
Yorkshire Water OAKDALE HARROGATE/CSO Oak Beck 6 5 h 19m -
Yorkshire Water CAMBRIDGE STREET/CSO Oak Beck And Coppice Beck 4 1 h 3m -
Yorkshire Water WEST PARK/CSO Oak Beck And Coppice Beck 1 0 h 12m -
Yorkshire Water BOROUGHBRIDGE ROAD/CSO Frogmire Dyke 1 0 h 11m -
Yorkshire Water SKIPTON ROAD 109/CSO Oak Beck Via A Public Sewer 1 0 h 5m -
Yorkshire Water ABBEY MILL/CSO River Nidd 0 0 h 1,649 h
Yorkshire Water STRAY REIN/CSO Hoohstone Beck 0 0 h -
Yorkshire Water WEDDERBURN SCHOOL/CSO Rud Beck Via A Public Sewer 0 0 h -
Yorkshire Water HOOKSTONE GRANGE WAY/CSO Rud Beck Via Public Sewer 0 0 h -
Yorkshire Water SKIPTON ROAD 33/CSO Oak Beck Via A Public Sewer 0 0 h -
Yorkshire Water UNITY GROVE/CSO Oak Beck Via Public Sewer 0 0 h 8,656 h
Yorkshire Water CHUDLEIGH ROAD/CSO Oak Beck And Coppice Beck 0 0 h 6,176 h
Yorkshire Water SKIPTON ROAD 179/CSO Oak Beck Via Public Sewer 0 0 h 8,464 h
Yorkshire Water SKIPTON ROAD 83/CSO Oak Beck Via A Public Sewer 0 0 h -
Yorkshire Water KINGS ROAD/CSO Oak Beck And Coppice Beck 0 0 h -
Yorkshire Water GREENFIELDS ROAD/NO 3 CSO Rud Beck Via A Public Sewer 0 0 h -
Yorkshire Water VILLAGE GREEN/CSO River Nidd 0 0 h 7,767 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.

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© Openstreetmap contributors, Contains OS data © Crown copyright and database right 2021-2025,
Contains Water UK National Storm Overflow Hub Data CC-BY-SA 4.0 and analysis © 2025 Top-Of-The-Poops

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