Polluted by sewage 1,117 times in 2025 lasting 1,070 hours
Your local MP is Sarah Champion (Labour) - Find out more about their interests, donors, and voting at They Work For You
Please consider a one-off or small recurring donation. We need your help to keep this site going.
Donate NowHere are all the reported sewage overflow totals for Thrybergh and Dalton 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 place 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 | River Don | EASTWOOD INDUSTRIAL ESTATE CSO | 77 | 378 | 100 |
| Yorkshire Water | River Don | ALDWARKE WWTW | 936 | 316 | 86.4 |
| Yorkshire Water | River Don | FITZWILLIAM CENTRE CSO | 45 | 165 | 100 |
| Yorkshire Water | Herringthorpe Beck | VALLEY ROAD NORTH CSO | 33 | 92 | 100 |
| Yorkshire Water | Dalton Brook | DALTON BROOK CSO | 16 | 78 | 100 |
| Yorkshire Water | River Don | FOSTERS GARAGE SPS | 10 | 40 | 100 |
| Yorkshire Water | Dalton Brook | DALTON LANE CSO | 0 | 0 | 93.4 |
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.