When a surface water is designated as a bathing water, NRW must produce a detailed bathing water profile and monitoring programme, as it does for all identified sites.
Pan ddynodir corff dŵr wyneb yn gorff dŵr ymdrochi, rhaid i CNC lunio proffil dŵr ymdrochi manwl a rhaglen fonitro, fel sy’n cael ei wneud ar gyfer pob safle a nodir.