Thirsk and Malton - Live Sewage

Polluted by sewage 12,843 hours in 2026 - That's 1.49 years , monitoring offline 79,742 hours , potential overflows 1,228 hours so far..

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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 Thirsk and Malton 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.

Totals for Thirsk and Malton in 2026

Sewage12,843 hours
Monitoring offline79,742 hours
Potential pollution1,228 hours
Storm overflows127

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Daily Data

Jan - 4,312 hours , 266 potential
Feb - 6,462 hours , 65 potential
Mar - 902 hours , 111 potential
Apr - 39 hours , 217 potential
May - 218 hours , 23 potential
Jun - 0 hours , 9,503 offline
Jul - 0 hours , 8,322 offline
Aug - 467 hours , 30 potential
Sept - 109 hours , 378 potential
Oct - 330 hours , 135 potential
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Yorkshire Water OSWALDKIRK/STW Holbeck 84 1,141h 43m 86 h
Yorkshire Water FELIXKIRK PIPER HILL/STW Whitelass Beck 75 1,140h 15m -
Yorkshire Water YORKERSGATE/CSO River Derwent 142 1,068h 16m 1,153 h
Yorkshire Water HAROME/STW Harome Moor Drain 75 1,062h 50m 66 h
Yorkshire Water LANGTHORNE/NO 2 STW Cobshaw Dyke 55 797h 56m -
Yorkshire Water WEST LILLING/CSO Black Dike 46 687h 43m -
Yorkshire Water COLD KIRBY/NO 2 STW Unnamed Grass Keld 76 629h 22m 168 h
Yorkshire Water WELHAM ROAD NORTH/HLR Culverted Mill Beck 51 614h 9m -
Yorkshire Water CASTLEGATE/CSO River Derwent 31 586h 40m -
Yorkshire Water KIRBY MISPERTON/STW Costa Beck 57 517h 55m -
Yorkshire Water SNAPE/STW/3XDWF OVERFLOW Main Cut 42 440h 28m -
Yorkshire Water BEDALE/STW Bedale Beck 29 362h 11m -
Yorkshire Water MALTON/STW/3XDWF OVERFLOW River Derwent 28 360h 32m -
Yorkshire Water GREAT BARUGH/STW Seven 32 265h 21m 168 h
Yorkshire Water HOWSHAM/STW River Derwent 23 234h 11m -
Yorkshire Water BRAWBY/STW River Seven 27 206h 15m -
Yorkshire Water FOSTON/STW Spital Beck 24 204h 56m -
Yorkshire Water ACKLAM/STW Acklam Beck 22 149h 30m -
Yorkshire Water HELMSLEY/STW River Rye 35 148h 34m -
Yorkshire Water WESTOW/STW Howl Beck 35 139h 39m 0 h
Yorkshire Water FLAXTON/STW Sike 43 128h 38m -
Yorkshire Water KIRKBY MOORSIDE/NO 2 CSO River Dove 44 111h 11m 0 h
Yorkshire Water CHANDLERS WHARF/CSO River Derwent 13 108h 12m -
Yorkshire Water OLDSTEAD/STW Wakendale Beck 17 107h 45m -
Yorkshire Water THORNTON LE DALE/STW Thornton Beck 10 100h 22m -
Yorkshire Water BURRILL/NO 2 STW Burrill Beck 24 93h 52m -
Yorkshire Water WHEELGATE/CSO River Derwent 28 90h 37m 91 h
Yorkshire Water THIRSK/STW Cod Beck 24 84h 44m -
Yorkshire Water SCRAYINGHAM SOUTH FM/CSO Goit Via A Culvertedsystem 21 80h 52m 88 h
Yorkshire Water GALE LANE/NO X CSO Syke Cut Via A Public Sewer 9 78h 57m 1,354 h
Yorkshire Water COWESBY/STW/6XDWF OVERFLOW Little Beck 9 78h 55m -
Yorkshire Water ST JAMES GREEN/CSO Cod Beck 26 69h 49m -
Yorkshire Water HUNMANBY STONEGATE/CSO Main Drain River Hertford 35 64h 52m -
Yorkshire Water WASS/NO 2 STW Holbeck 22 62h 10m -
Yorkshire Water LOW LN HUTTON SESSAY/CSO Culverted Birdforth Beck 16 59h 3m -
Yorkshire Water NORTON CHURCH ST/2 CSO River Derwent 38 56h 47m 0 h
Yorkshire Water PICKERING/STW/6XDWF OVERFLOW Costa Beck 26 54h 4m 0 h
Yorkshire Water LOCKTON/STW Levisham Beck 32 49h 14m 0 h
Yorkshire Water GILLING EAST/STW Holbeck 6 45h 35m -
Yorkshire Water HUNMANBY/STW River Hertford 11 43h 4m -
Yorkshire Water HACKFORTH/NO 2 STW Bowbridge Beck 20 39h 42m 0 h
Yorkshire Water LASCELLES LANE/CSO River Derwent 20 37h 45m -
Yorkshire Water MUSTON/CSO Hertford 8 34h 22m 265 h
Yorkshire Water KIRKBYMOORSIDE/STW River Dove 6 32h 25m -
Yorkshire Water BLAKEY LANE/NO 2 CSO Cod Beck 20 26h 37m 1 h
Yorkshire Water FILEY TRANSFER/CSO North Sea 16 24h 33m -
Yorkshire Water FLATCLIFFS/CSO North Sea 4 23h 55m -
Yorkshire Water FOLKTON CARR LN/CSO Ditch 12 23h 11m -
Yorkshire Water SHERBURN/STW Sherburn Beck 6 18h 1m -
Yorkshire Water LINKFIELD/NO 2 SPS Tbc When Permit Issued 4 17h 49m -
Yorkshire Water LITTLE BARUGH/STW Costa Beck 7 17h 22m -
Yorkshire Water BEDALE/STW Bedale Beck 16 17h 1m -
Yorkshire Water GREAT CRAKEHALL/CSO Bedale Beck 9 15h 6m 0 h
Yorkshire Water THIRSK CHAPEL STREET/CSO Cod Beck 4 14h 18m -
Yorkshire Water SINNINGTON MAIN ST/CSO River Severn 3 13h 45m -
Yorkshire Water RILLINGTON/STW Rillington Beck 2 13h 41m -
Yorkshire Water THIRSK FINKLE ST/NO 2 CSO Cod Beck 6 11h 38m -
Yorkshire Water SAWMILL LANE/CSO River Rye 10 11h 31m 1 h
Yorkshire Water KIRKLINGTON/STW/PRELIMINARY TREATMENT-STW/3XDWF OVERFLOW Healam Beck 6 11h 13m -
Yorkshire Water PICKERING/STW/3XDWF OVERFLOW Costa Beck 11 10h 7m -
Yorkshire Water SOUTH END BEDALE/CSO Tbc When Permit Issued 10 9h 18m -
Yorkshire Water HUNMANBY GAP/CSO North Sea Via Reighton Gill 3 8h 7m -
Yorkshire Water STAXTON VILLAGE/CSO Ditch 4 7h 7m -
Yorkshire Water CRAMBE/STW River Derwent 1 5h 43m -
Yorkshire Water LEEMING WATER LANE/CSO Tbc When Permit Issued 10 4h 51m -
Yorkshire Water SHERIFF HUTTON/STW Howl Beck 4 4h 48m 3,358 h
Yorkshire Water FILEY TRANSFER/CSO North Sea 3 4h 37m -
Yorkshire Water OUTGANG ROAD/CSO Outgang Drain 8 4h 30m 1 h
Yorkshire Water RILLINGTON/STW Rillington Beck 7 4h 25m 0 h
Yorkshire Water SKIPTON ON SWALE/STW River Swale 6 4h 13m -
Yorkshire Water NORTHALLERTON ROAD/CSO Terry Gutter 3 4h 9m 821 h
Yorkshire Water GALE LANE/NO 2 CSO Syke Cut Via A Public Sewer 7 3h 57m 7 h
Yorkshire Water PICKHILL/CSO Pickhill Beck 2 3h 33m -
Yorkshire Water NETHER SILTON/CSO Old Beck 2 3h 13m -
Yorkshire Water AMPLEFORTH/CSO Holbeck 4 3h 1m 1,151 h
Yorkshire Water SHERIFF HUTTON/STW Howl Beck 2 3h -
Yorkshire Water FILEY TRANSFER/CSO North Sea 1 2h 59m -
Yorkshire Water RYEDALE AISLABY/SPS Costa Beck 2 2h 50m -
Yorkshire Water MALTON EBBERSTON/CSO Ebberston Beck 2 2h 12m -
Yorkshire Water AMPLEFORTH VILLAGE/STW Holbeck 6 1h 51m 0 h
Yorkshire Water MARTON/STW River Seven 2 1h 34m -
Yorkshire Water LEEMING BAR/CSO Bedale Beck 2 1h 23m -
Yorkshire Water RYEDALE NEW ROAD/CSO Wath Beck 4 1h 16m -
Yorkshire Water SHERIFF HUTTON/CSO Bulmer Beck 2 0h 57m -
Yorkshire Water MALTON HAROME/CSO River Riccall 1 0h 53m -
Yorkshire Water EASTGATE/CSO Outgang Drain 3 0h 51m -
Yorkshire Water THORNTON LE BEANS/CSO Thornton Le Beans Beck 2 0h 51m -
Yorkshire Water Unknown Unknown 4 0h 49m -
Yorkshire Water ST PETERS STREET/CSO Mill Beck 3 0h 35m -
Yorkshire Water OUTGAITS LANE/CSO River Hertford 2 0h 33m -
Yorkshire Water SPORTSFIELD/NO 2 CSO River Dove 2 0h 30m -
Yorkshire Water SHEEPFOOT HILL/CSO River Derwent 1 0h 30m -
Yorkshire Water MALTON HOLMESFLD/CSO River Derwent 4 0h 30m -
Yorkshire Water STONE BRIDGE/NO 2 CSO Thornton Beck 2 0h 28m -
Yorkshire Water HARBOUR VIEW BEDALE/CSO Not Matched In Ea Consents Database 1 0h 28m -
Yorkshire Water SCRUTON/STW Common Stell 1 0h 24m -
Yorkshire Water MARTON BRIDGE/CSO River Seven 1 0h 23m -
Yorkshire Water OLD MALTONGATE/CSO River Derwent 1 0h 20m -
Yorkshire Water ALLERSTON/CSO Allerston Beck 0 0h -
Yorkshire Water CUDDY BROWN CLOSE/CSO Thornton Beck 0 0h 5,292 h
Yorkshire Water THORNTON LE MOOR/CSO River Wiske 0 0h -
Yorkshire Water HAWKSWELL LANE/CSO River Derwent 0 0h -
Yorkshire Water RAILWAY ST SLINGSBY/CSO Wath Beck 0 0h -
Yorkshire Water RYEDALE CARR LANE/CSO Holbeck 0 0h -
Yorkshire Water KIRKBY MILLS/CSO River Dove 0 0h 6,624 h
Yorkshire Water WELHAM ROAD SOUTH/CSO Mill Beck 0 0h -
Yorkshire Water ACKLAM/CSO Acklam Beck 0 0h -
Yorkshire Water BALACLAVA/NO 2 CSO Priorpot Beck 0 0h -
Yorkshire Water ST HILDAS STREET/CSO East Beck 0 0h -
Yorkshire Water HOVINGHAM/STW Marrs Beck 0 0h -
Yorkshire Water APPLETON LE MOOR/STW River Seven 0 0h 1 h
Yorkshire Water REETON TERRACE/NO 2 CSO Priorpot Beck 0 0h -
Yorkshire Water TOWN STREET MALTON/CSO River Derwent 0 0h 7,145 h
Yorkshire Water PRIORPOT BRIDGE/CSO Priorpot Beck 0 0h 6,624 h
Yorkshire Water FOSTON/CSO Spittal Beck 0 0h -
Yorkshire Water SWINTON LOWFIELD/CSO River Rye 0 0h -
Yorkshire Water BROOKSIDE CLOSE/CSO Bedale Bk/Swale 0 0h -
Yorkshire Water SCRAYINGHAM RECTRY FM/CSO Derwent 0 0h 2,001 h
Yorkshire Water FIRBY/STW Derwent 0 0h 5,281 h
Yorkshire Water NORMANBY/CSO River Seven 0 0h 6,624 h
Yorkshire Water REETON TERRACE/NO 1 CSO Priorpot Beck 0 0h 6,624 h
Yorkshire Water SWINTON LOWFIELD/CSO River Rye 0 0h 6,624 h
Yorkshire Water SINDERBY/STW/3XDWF OVERFLOW Holme And Ainderby Beck 0 0h 6,898 h
Yorkshire Water HUNGATE/NO 2 CSO Pickering Beck 0 0h -
Yorkshire Water CONEYSTHORPE/STW Mill Hills Beck 0 0h -
Yorkshire Water MISPERTON LANE/CSO Habton Ings Drain 0 0h 5,803 h
Yorkshire Water THE BROWS/CSO River Derwent 0 0h 6,634 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

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.