From the archive: Sewage sleuths: the men who revealed the slow, dirty death of Welsh and English rivers

We are raiding the Guardian long read archives to bring you some classic pieces from years past, with new introductions from the authors. This week, from 2022: A tide of effluent, broken laws and ruthless cuts is devastating the nation’s waterways. An academic and a detective have dredged up the truth of how it was allowed to happen – but will anything be done? By Oliver Bullough. Read by Peter Searles. Help support our independent journalism at theguardian.com/longreadpod