Helen Campbell, from Shropshire Wildlife Trust, said it was a good sign the River Severn was in good health. “They don't like dirty water,” she said. | more… https://www.google.com/url?rct=j&sa=t&url=http://www.bbc.co.uk/news/uk-england-shropshire-34733650&ct=ga&cd=CAIyHGVlODAyMzA4NTkzYTU2NGY6Y28udWs6ZW46R0I&usg=AFQjCNEf1ReEVdBPPX_ntxVhbtGwZOy01w