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Polluted by sewage 597 times in 2025 lasting 4,440 hours
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Donate NowHere are all the reported sewage overflow totals for Normanton and Hemsworth in 2025. 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 all the declared CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s appeared to have monitoring enabled for more than 50% of the year
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| Yorkshire Water | Hemsworth Dyke | SOUTH ELMSALL WWTW | 134 | 818 | 99.8 |
| Yorkshire Water | Hessle Beck | FITZWILLIAM SPS | 40 | 736 | 100 |
| Yorkshire Water | River Went | ACKWORTH WWTW | 51 | 711 | 99.9 |
| Yorkshire Water | Brook Dike/River Dearne | WATH UPON DEARNE WWTW | 27 | 360 | 100 |
| Yorkshire Water | Cold Hiendley Reservoir | COLD HIENDLEY STW | 41 | 328 | 100 |
| Yorkshire Water | Oakenshaw Beck | CROFTON STW | 60 | 310 | 99.8 |
| Yorkshire Water | Skell | WRANGBROOK STW | 27 | 287 | 100 |
| Yorkshire Water | Applehaigh Beck | NOTTON SPS | 38 | 285 | 99.3 |
| Yorkshire Water | Hoyle Mill Beck | HOYLE MILL LANE SPS | 19 | 103 | 100 |
| Yorkshire Water | Went Beck | SHARLSTON (GIN LANE) SPS | 19 | 96 | 99 |
| Yorkshire Water | Went Beck | FEATHERSTONE NO 2 CSO | 25 | 74 | 99.8 |
| Yorkshire Water | Went Beck | SOUTHFIELD AVENUE SPS | 20 | 70 | 100 |
| Yorkshire Water | Drain Beck | SHAY LANE SEWAGE PUMPING STATION | 9 | 60 | 100 |
| Yorkshire Water | Applehaigh Beck | BLEAKLEY LANE NO 2 CSO | 16 | 50 | 100 |
| Yorkshire Water | Ashfield Beck | KING EDWARD STREET NO 2 CSO | 26 | 44 | 100 |
| Yorkshire Water | Sewerbridge Beck | SEWERBRIDGE LANE CSO | 7 | 41 | 100 |
| Yorkshire Water | Sewerbridge Beck | FEATHERSTONE LANE (NORTH) SPS | 16 | 32 | 99 |
| Yorkshire Water | Hoyle Mill Drain | HEMSWORTH SPS (WOODLANDS) | 7 | 15 | 99.9 |
| Yorkshire Water | River Went | KINSLEY WAKEFIELD ROAD CSO | 5 | 7 | 100 |
| Yorkshire Water | Ashfield Beck | ASHGAP LANE CSO | 5 | 4 | 100 |
| Yorkshire Water | Lawns Dike, Newmiller Dam | SECKAR SEWAGE TREATMENT WORKS | 4 | 2 | 91.7 |
| Yorkshire Water | Hemsworth Dyke | GROVE LANE STORM TANKS | 1 | 0 | 100 |
| Yorkshire Water | Wintersett Reservoir | 109 STATION ROAD | 0 | 0 | 100 |
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.
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Get in touch if you have queries or want to discuss our data.
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