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  4. How do I access the Water Quality Archive (WQA)?

How do I access the Water Quality Archive (WQA)?

Created: 18 February 2020 Updated: 06 November 2024

You can access the Water Quality Archive (WQA) here.

The WQA provides data on water quality measurements. Samples are taken at sampling points around England and can be from coastal or estuarine waters, rivers, lakes, ponds, canals or groundwaters. They are taken for a number of purposes including compliance assessment against discharge permits, investigation of pollution incidents or environmental monitoring. The archive provides data on measurements and samples dating from 2000.

The data is updated within two working days of a new sample being added. We also do a complete data refresh each month which may include corrections to earlier data.

Please see the WQA homepage for the latest refresh dates.