Ossett and Denby Dale was polluted by sewage 1,557 times in 2024
lasting 8,801 hours - that's 1.02 years!

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Contains OS Data © Crown copyright & database right 2021-2024
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✔ means we have experimental daily data since 2023
Totals for Ossett and Denby Dale in 2024
43 Sites polluted by Yorkshire Water
1,557 sewage dumps
8,801 h duration
That's 1.02 years! On average 4.3 times a day
Change Over Time
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Pollution Summary 2024

Here are all the reported sewage overflow totals for Ossett and Denby Dale in 2024. Sometimes sewage can be being dumped for months at a time.

Reporting refers to how much of the time the monitoring was active. In this constituency 0 of the total 50 CSO locations had reporting enabled for less than half the year, of which 0 had zero reporting.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Yorkshire Water River Calder HORBURY (DUDFLEET) STW 143 998 100
Yorkshire Water River Dearne CLAYTON WEST WWTW 98 952 100
Yorkshire Water Bretton Brook WEST BRETTON STW 78 884 100
Yorkshire Water Totty Beck WOOLLEY STW 93 873 99.95
Yorkshire Water Smithy Brook BRIDGE ROAD CSO 110 735 92.7
Yorkshire Water River Calder MITCHELL LAITHES WWTW 75 505 89.75
Yorkshire Water Dean Bottom Dike SPRINGFIELD LANE CSO 80 386 93.2
Yorkshire Water River Calder ALBION MILLS CSO 55 379 100
Yorkshire Water Dennington Beck GREAT CLIFF PS & STORM TANK 53 368 99.9
Yorkshire Water River Dearne PARK MILL CSO 54 317 100
Yorkshire Water River Dearne CUCKSTOOL BOTTOM CSO 68 286 99.2
Yorkshire Water River Calder HORBURY BRIDGE SPS 78 282 100
Yorkshire Water Pugney'S Drain PORTOBELLO SPS 33 204 99.9
Yorkshire Water River Calder OSSETT SPA SPS AND STORM TANKS 25 189 99.9
Yorkshire Water River Calder HEALEY ROAD OSSETT CSO 66 189 100
Yorkshire Water Park Gate Dike SKELMANTHORPE CSO 33 187 100
Yorkshire Water Shepley Dike DAMHILL NO 2 CSO 42 179 84.4
Yorkshire Water Out Lane Dyke BROOMFIELD LANE NO 2 CSO 31 144 100
Yorkshire Water Little Dike BROOMHILL EMLEY CSO 32 131 100
Yorkshire Water Owler Beck STANDBRIDGE LANE CSO 50 106 100
Yorkshire Water Pildacre Mill Beck PILDACRE LANE CSO 35 82 99.9
Yorkshire Water River Dearne HAIGH STW 20 69 99.7
Yorkshire Water Spring Mill Beck BAPTISTS LANE CSO 41 63 98.3
Yorkshire Water Oakenshaw Beck MONTAGUE STREET CSO 20 59 100
Yorkshire Water Old Mill Stream CHARLES STREET NO 2 CSO 13 40 100
Yorkshire Water Smithy Brook EAST COWICK SEWAGE PUMPING STATION 14 26 90
Yorkshire Water River Dearne BIRDS EDGE CSO 9 25 99.9
Yorkshire Water Range Dike SPRINGFIELD LANE CSO 2 24 100
Yorkshire Water Thorpe Dike LANE HACKINGS GREEN CSO 17 20 96
Yorkshire Water Pits Beck Culverted NETHERTON CSO 20 20 100
Yorkshire Water Shepley Dike THUNDERBRIDGE NO 2 CSO 7 15 98.2
Yorkshire Water River Dearne CATCH BAR CSO 9 13 100
Yorkshire Water Owler Beck Via Surface Wtr Sw PLEDWICK CSO 19 8 99.9
Yorkshire Water Spring Mill Beck OSSETT TOWNGATE NO 2 CSO 12 8 100
Yorkshire Water Bretton Brook INNFOLD FARM 3 NO 2 CSO 3 5 98.8
Yorkshire Water Oakenshaw Beck AGBRIGG GARAGE CSO 7 4 100
Yorkshire Water Bretton Brook TOWN FARM 4 SSO 2 3 100
Yorkshire Water River Dearne TOWN FARM 4 CSO 1 3 99.7
Yorkshire Water River Calder DENBY DALE ROAD CSO 1 1 100
Yorkshire Water Clvrt Springfield Beck OSSETT WAKEFIELD ROAD 2 CSO 3 1 99.5
Yorkshire Water Bushy Beck GAWTHORPE MAIN STREET CSO 3 0 94.7
Yorkshire Water River Dearne SPRING GROVE CSO 1 0 98.3
Yorkshire Water Oakenshaw Beck AGBRIGG GARAGE SPS 1 0 100
Yorkshire Water Owler Beck/Newmillerdam NEWMILLERDAM CSO 0 0 100
Yorkshire Water Bretton Brook TOWN FARM 2 CSO 0 0 100
Yorkshire Water Clvrt Toad Hole Dike BACK LANE CSO 0 0 99.9
Yorkshire Water Woodsome Beck DOGLEY CSO 0 0 94.1
Yorkshire Water Chapelthorpe Bank Owler B CHAPELTHORPE CSO 0 0 100
Yorkshire Water River Dearne WAKEFIELD ROAD SCISSET CSO 0 0 90.1
Yorkshire Water River Calder SWALLOWS NEST CSO 0 0 12.9

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. This 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.