it is a combination. there are a huge amount of chicken farms you're right but the raw sewage being dumped untreated has an effect too. you got to start somewhere. the river is a murky green mess when back in my youth you could watch fish and see the bottom throughout the summer. i canoed regularly as a youth, but now i don't think i'd do any kind of water sports on the wye now due to the high level of pollutants which i'm really sad about.
it is a combination. there are a huge amount of chicken farms you're right but the raw sewage being dumped untreated has an effect too. you got to start somewhere. the river is a murky green mess when back in my youth you could watch fish and see the bottom throughout the summer. i canoed regularly as a youth, but now i don't think i'd do any kind of water sports on the wye now due to the high level of pollutants which i'm really sad about.