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Polluted by sewage 760 hours in 2025 , monitoring offline 7,888 hours , potential overflows 110 hours
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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| Company | Site Name | Receiving Waterway | Overflow Days | Total Duration (hours) | Offline/Potential Pollution |
|---|---|---|---|---|---|
| Yorkshire Water | WIDE LANE MORLEY/CSO | Owler Beck | 56 | 165 h 20m | 2 h |
| Yorkshire Water | ST BERNARDS MILL/NO 2 CSO | Farnley Wood Beck | 37 | 120 h 28m | - |
| Yorkshire Water | DEWSBURY ROAD 51/NO 2 CSO | Cotton Mill Beck | 43 | 105 h 33m | - |
| Yorkshire Water | ARDSLEY FALLS/CSO | Bowling Beck | 20 | 95 h 16m | - |
| Yorkshire Water | DEAN BECK/CSO | Farnley Wood Beck | 34 | 80 h 34m | - |
| Yorkshire Water | WELLFIELD TERRACE/2 CSO | Farnley Wood Beck | 30 | 49 h | - |
| Yorkshire Water | SPRING GARDENS/NO 2 CSO | Cock Beck | 5 | 44 h 16m | 108 h |
| Yorkshire Water | ROOMS LANE/NO 2 CSO | Clvrtd Dean Beck | 22 | 31 h 58m | - |
| Yorkshire Water | FARNLEY RING ROAD/CSO | Farnley Beck | 17 | 31 h 4m | - |
| Yorkshire Water | HAIGH HALL/CSO | Hey Beck | 13 | 25 h 10m | - |
| Yorkshire Water | BEESTON RING ROAD/CSO | Millshaw Beck | 12 | 8 h 30m | - |
| Yorkshire Water | EAST ARDSLEY/NO 2 CSO | C. Lingwell Gate Beck | 3 | 1 h 41m | - |
| Yorkshire Water | CHURWELL HILL/CSO | Farnley Wood Beck | 2 | 1 h 13m | - |
| Yorkshire Water | STONEBRIDGE LANE/CSO | Farnley Beck | 2 | 0 h 21m | - |
| Yorkshire Water | LUMB WOOD/NO 2 CSO | Cock Beck | 1 | 0 h 14m | - |
| Yorkshire Water | MORLEY STATION ROAD/CSO | Cotton Mill Beck | 1 | 0 h 14m | - |
| Yorkshire Water | LAWNS LANE/CSO | Wortley Beck | 0 | 0 h | - |
| Yorkshire Water | WESTWOODSIDE/CSO | Farnley Wood Beck | 0 | 0 h | - |
| Yorkshire Water | TINGLEY/CSO | Denshaw Beck | 0 | 0 h | - |
| Yorkshire Water | GELDERD RD SCHOOL/2 CSO | Dean Beck | 0 | 0 h | 7,888 h |
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.
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org