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Calder Valley - Live Sewage

Polluted by sewage 7,087 hours in 2026 , monitoring offline 38,559 hours , potential overflows 3,066 hours so far..

© OpenStreetMap contributors
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 Calder Valley 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 - 2,102 hours , 917 potential
Feb - 3,645 hours , 179 potential
Mar - 914 hours , 830 potential
Apr - 334 hours , 720 potential
May - 90 hours , 419 potential
Jun - 0 hours
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Yorkshire Water PRINCESS BRIDGE/NO 2 CSO River Calder 91 1,454h 52m -
Yorkshire Water CROW NEST BRIDGE/CSO River Calder 66 1,159h 17m 467 h
Yorkshire Water THORNHILLS BECK LANE/CSO River Calder 62 485h 24m 0 h
Yorkshire Water NEW ROAD/CSO Luddenden Brook 45 438h 51m -
Yorkshire Water BRIGHOUSE/UPPER STW/3XDWF OVERFLOW River Calder 41 423h 40m -
Yorkshire Water EASTWOOD/STW River Calder 26 318h 18m -
Yorkshire Water BONEGATE LANE/CSO River Calder 62 304h 25m -
Yorkshire Water WYKE BECK/CSO Bottom Hall Beck 33 223h 43m 3 h
Yorkshire Water DELIGHT/CSO Colden Water 18 207h 52m -
Yorkshire Water WISTONS LANE/CSO Canker Dyke 18 184h 46m -
Yorkshire Water EASTWOOD/NO 2 CSO River Calder 36 183h 43m -
Yorkshire Water BARSEY GREEN/STW Barsey Clough 23 183h 19m -
Yorkshire Water BREARLEY MAIN SEWER/CSO River Calder 39 170h 44m 10 h
Yorkshire Water BROOKFOOT MILLS/CSO Wyke Beck 24 170h -
Yorkshire Water HIGH ROYD/NO 2 STW/3XDWF OVERFLOW River Calder 20 139h 7m -
Yorkshire Water BRIGHOUSE/UPPER STW/6XDWF OVERFLOW River Calder 20 135h 2m 3 h
Yorkshire Water COLEY BECK/CSO Wyke Beck 26 124h 3m 3 h
Yorkshire Water FIELDING STREET/CSO River Calder 22 113h 29m 8 h
Yorkshire Water FIELDEN TERRACE/CSO Oak Hill Clough 36 112h 9m -
Yorkshire Water WEST VALE/CSO Black Brook 19 86h 51m 411 h
Yorkshire Water RIPPONDEN/STW/3XDWF OVERFLOW River Ryburn 8 61h 56m -
Yorkshire Water FERN HILL/CSO River Calder 7 59h 8m 2,378 h
Yorkshire Water SYKE LANE/CSO Wyke Beck 12 48h 12m -
Yorkshire Water WOODHOUSE LANE/CSO River Calder 24 42h 15m 10 h
Yorkshire Water ROSE GROVE LANE/CSO River Calder 26 37h 52m -
Yorkshire Water HALIFAX OLD ROAD/CSO Wyke Beck 17 32h 50m 11 h
Yorkshire Water ELLAND WEST VALE/SPS River Calder 10 21h 15m -
Yorkshire Water CRAGG ROAD/NO 2 CSO Cragg Brook 9 20h 16m -
Yorkshire Water HUDDERSFIELD RD 106/CSO Canker Dyke 20 18h 28m -
Yorkshire Water SOUTH LANE/CSO Canker Dyke 20 18h 27m -
Yorkshire Water BRAMSTON STREET/CSO River Calder 15 14h 58m 285 h
Yorkshire Water ALEGER STREET/CSO River Calder 11 12h 43m -
Yorkshire Water MARKET STREET/CSO River Calder 10 10h 14m -
Yorkshire Water ASHENHURST ROAD/CSO River Calder 9 9h 55m -
Yorkshire Water HEPTONSTALL ROAD/CSO Hebden Water 6 8h 56m -
Yorkshire Water HAZELWOOD STREET/CSO River Calder 6 7h 56m 389 h
Yorkshire Water HOYLES MEMORIAL GDNS/CSO Black Brook 9 6h 5m -
Yorkshire Water RIVER STREET/CSO River Calder 6 5h 37m -
Yorkshire Water BURNLEY RD CORNHOLME/CSO River Calder 3 5h 3m -
Yorkshire Water POLLARD STREET/NO 2 CSO River Calder 6 4h 44m -
Yorkshire Water ELLAND LOWFIELDS/SPS River Calder 6 3h 55m 1 h
Yorkshire Water FOREST HILL ROAD/CSO Holywell Brook 4 3h 52m -
Yorkshire Water ELLEN HOLME ROAD/CSO River Calder 3 3h 43m -
Yorkshire Water OLD GATE/CSO Hebden Water 3 1h 56m -
Yorkshire Water HOYLE HOUSE BRIDGE/CSO Clifton Beck 4 1h 48m -
Yorkshire Water LOWER EDGE ROAD/CSO River Calder 1 1h 29m -
Yorkshire Water EASTGATE ELLAND/CSO Canker Dyke 4 1h 26m -
Yorkshire Water DYHOUSE LANE/CSO River Calder 4 0h 44m -
Yorkshire Water BROW BRIDGE/CSO Black Brook 2 0h 43m -
Yorkshire Water HOLYWELL GREEN/CSO Holywell Brook 1 0h 30m -
Yorkshire Water HOULTS LANE/CSO Black Brook 1 0h 29m -
Yorkshire Water LONGFIELD ROAD/CSO Walsden Water 2 0h 28m -
Yorkshire Water MIDGELEY ROAD/CSO Culverted White Lee Clough 1 0h 14m -
Yorkshire Water ELLAND WEST VALE/SPS River Calder 2 0h 3m -
Yorkshire Water ELLAND LOWFIELDS/SPS River Calder 0 0h 2,777 h
Yorkshire Water ROCHDALE ROAD/CSO Black Brook 0 0h -
Yorkshire Water CARR HALL LANE/CSO Calder And S 0 0h -
Yorkshire Water SUNNYBANK/CSO Black Brook 0 0h -
Yorkshire Water LORDS LANE BRIGHOUSE/CSO River Calder 0 0h 2,777 h
Yorkshire Water HOLYWELL BROOK/CSO Culverted Holywell Brook 0 0h 275 h
Yorkshire Water PARK ROAD ELLAND/CSO River Calder 0 0h 2,777 h
Yorkshire Water LILLANDS LANE/CSO River Calder 0 0h 2,777 h
Yorkshire Water IBBOTROYD/CSO Ibbot Royd Clough 0 0h -
Yorkshire Water HANGINGROYD ROAD/CSO River Calder 0 0h -
Yorkshire Water HALL STREET/CSO Walsden Water 0 0h 3,299 h
Yorkshire Water LOWER MILL/CSO Hebden Water 0 0h -
Yorkshire Water ELLAND LANE/CSO River Calder 0 0h -
Yorkshire Water HOLLINS MILL LANE/CSO Rochdale Canal 0 0h -
Yorkshire Water SADDLEWORTH ROAD/CSO Black Brook 0 0h 3,299 h
Yorkshire Water CARVER CLOUGH/NO 2 CSO Carver Clough 0 0h -
Yorkshire Water OLD BRIDGE INN/CSO River Ryburn 0 0h 2,787 h
Yorkshire Water STAINLAND ROAD/CSO Holywell Brook 0 0h -
Yorkshire Water SALEM CRICKET GROUND/CSO Hebden Water 0 0h 3,299 h
Yorkshire Water BOROUGH BOUNDARY/CSO Wyke Beck 0 0h -
Yorkshire Water BIRDS ROYD LANE/NO 2 CSO River Calder 0 0h -
Yorkshire Water THE DRIVE/CSO River Calder 0 0h 2,787 h
Yorkshire Water REDACRE/NO 2 STW/3XDWF OVERFLOW River Calder 0 0h -
Yorkshire Water BIRCHCLIFFE ROAD/NO 2 CSO Hebden Water 0 0h 2,787 h
Yorkshire Water GAS WORKS LANE/CSO River Calder 0 0h -
Yorkshire Water PARK ROAD/CSO River Calder 0 0h 2,787 h
Yorkshire Water MITCHELL STREET/CSO River Calder 0 0h -
Yorkshire Water SKEW BRIDGE/CSO Walsden Water 0 0h 2,427 h
Yorkshire Water ELLAND MILLGATE/CSO River Calder 0 0h 2,777 h
Yorkshire Water SCOUT ROAD/CSO River Calder 0 0h -
Yorkshire Water WYKE OLD LANE/CSO Clifton Beck 0 0h -
Yorkshire Water HELLIWELL SYKE/NO 3 CSO Helliwell Syke 0 0h -

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.