Welsh Ministers are required to identify popular bathing waters in Wales, monitor their water quality and keep bathers well informed about water quality at these identified sites.
Mae’n ofynnol i Lywodraeth Cymru nodi dyfroedd ymdrochi poblogaidd yng Nghymru, monitro ansawdd eu dŵr a rhoi gwybodaeth i ymdrochwyr am ansawdd y dŵr ar y safleoedd sydd wedi’u dynodi.