“For too long, the River Wye has suffered from extreme pollution, leading to devastating effects on wildlife and impacting all those who live along its banks.
"Ers gormod o amser, mae Afon Gwy wedi dioddef o lygredd eithafol, gan arwain at effeithiau dinistriol ar fywyd gwyllt ac effeithio ar bawb sy'n byw ar hyd ei glannau.