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Polluted by sewage 280 times in 2025 lasting 1,139 hours
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Donate NowHere are all the reported sewage overflow totals for Knaresborough 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 Nidd | KNARESBOROUGH WPC WORKS | 38 | 379 | 99.6 |
| Yorkshire Water | Rud Beck | SHERWOOD DRIVE CSO | 49 | 230 | 100 |
| Yorkshire Water | River Nidd | MANSE LANE 57 CSO | 59 | 199 | 99 |
| Yorkshire Water | River Nidd | CRAGG TOP COMBINED SEWER OVERFLOW | 11 | 106 | 95.7 |
| Yorkshire Water | Mill Stream | WATERSIDE 47 CSO | 28 | 59 | 92.1 |
| Yorkshire Water | River Nidd | ABBEY ROAD NO 2 CSO | 19 | 48 | 80.6 |
| Yorkshire Water | Mill Stream | WATERSIDE 48 CSO | 24 | 42 | 88.6 |
| Yorkshire Water | River Nidd | SPITAL CROFT CSO | 21 | 42 | 99.4 |
| Yorkshire Water | River Nidd | WATERSIDE 49 CSO | 16 | 14 | 98.3 |
| Yorkshire Water | Culverted Star Beck | FOREST LANE CSO | 9 | 12 | 100 |
| Yorkshire Water | Frogmire Dyke | BOROUGHBRIDGE ROAD CSO | 5 | 2 | 98.3 |
| Yorkshire Water | Rud Beck Via Public Sewer | HOOKSTONE GRANGE WAY CSO | 1 | 1 | 99.9 |
| Yorkshire Water | River Nidd | ABBEY MILL CSO | 0 | 0 | 74.6 |
| Yorkshire Water | Rud Beck Via A Public Sewer | GREENFIELDS ROAD NO3 CSO | 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.
press [at] top-of-the-poops.org