At present, over 60% of waterbodies in Wales fail against the tighter targets, and Local Planning Authorities are being asked to take more action to avoid further deterioration of the environment.
Ar hyn o bryd, mae dros 60% o'r cyrff dŵr yng Nghymru yn methu'r targedau llymach, a gofynnir i Awdurdodau Cynllunio Lleol gymryd mwy o gamau i atal yr amgylchedd rhag dirywio ymhellach.