Local Authorities are also required to display further information in the form of water quality classification symbols during the bathing season at each identified bathing water.
Mae’n ofynnol i Weinidogion 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.