Currently only 14 per cent of UK rivers are rated as having a ‘good’ ecological status. Agricultural runoff and the release of untreated sewage are the leading causes of water pollution. But why are rivers in such a bad way and what can we do about it?

In this episode we speak to Dr Tanja Radu, senior lecturer in water engineering at Loughborough University. She tells us how we’ve reached this point in river pollution, the risk it poses to human health and what we can do to set things right.
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