You can find further information in The Water Resources (Control of Agricultural Pollution) (Wales) Regulations 2021: guidance for farmers and land managers.
I gael rhagor o wybodaeth , ewch i Rheoliadau Adnoddau Dŵr (Rheoli Llygredd Amaethyddol) (Cymru) 2021: canllawiau ar gyfer ffermwyr a thirfeddianwyr