The bathing water results for 2011 show that 87 out of Wales’ 88 designated bathing waters have met the required standard for public health and the environment, under the Bathing Water Directive.
Cyfradd ymateb unigolion ar gyfer Cyfrifiad 2021 oedd 97% o boblogaeth breswyl arferol Cymru a Lloegr, a thros 88% ym mhob awdurdod lleol.