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Polluted by sewage 124 times in 2025 - lasting 316 hours
Nidd at the Lido, Knaresborough was the #96 most polluted bathing area in England & Wales, by duration of sewage overflows, as reported by the water companies
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Donate NowHere are all the reported sewage overflow totals for Nidd at the Lido, Knaresborough in 2025.
We use data from the water companies, but we are seeing many anomalies that make us believe that bathing location information is quite poor. The situation is likely far worse than reported here.
If the locations of the sewage outlets look a bit unusual, it is likely that the reporting of the data from the water company is in error. We rely on their data in order to draw these maps.
Other CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s may also be located nearby, however the water companies claim that these do not affect the water quality here.
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| 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 | Frogmire Dyke | BOROUGHBRIDGE ROAD CSO | 5 | 2 | 98.3 |
| Yorkshire Water | River Nidd | ABBEY MILL CSO | 0 | 0 | 74.6 |
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