How it works

Our network of volunteer citizen scientists (River Health Project Monitors) make regular visits to monitoring locations to collect, identify and count river bugs to build up a data base which helps the Environment Agency set a ‘trigger level’. If the results from our monitoring fall below the trigger level action will need to be taken to improve matters, and in some cases further investigations can be carried out to identify the cause or culprits of pollution incidents.

Our River Health monitors are all volunteers from local communities and are trained to national standards in how to take the samples, identify and count eight key pollution sensitive species and record their findings on a central data base (

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