Water quality
What's in the water near you?
The Environment Agency's sampling points on the rivers, lakes, canals, estuaries and beaches around your postcode, and what the laboratory found in the past year: ammonia, phosphate, nitrate, dissolved oxygen, pH and more.
- Latest sample results
- A year of medians
- Rough health bands
How this works
Environment Agency officers take samples from thousands of fixed points on England’s rivers, lakes, canals, estuaries, beaches and boreholes, most of them monthly, and the laboratory results go into the Water Quality Archive. The page lists the open points within your chosen radius and reads a year of results for nine determinands that say most about a river’s health, showing the latest value and the year’s median for each. The two archive calls are shared between neighbouring postcodes and cached for six hours. The archive covers England; Wales, Scotland and Northern Ireland are linked to their own agencies.
Sources
- Environment Agency Water Quality Archive (© Environment Agency copyright and/or database right). Open Government Licence v3.
- Postcodes: postcodes.io / ONS Postcode Directory (OGL v3).
For information only. The bands are indicative; the official river classification is published in the Environment Agency’s Catchment Data Explorer.