Ar 23 Mawrth 2022, cyflwynodd yr Uchel Lys yng Nghaerdydd ei ddyfarniad ar yr her a gyflwynwyd gan NFU Cymru i benderfyniad Llywodraeth Cymru i gyflwyno Rheoliadau Adnoddau Dŵr (Rheoli Llygredd Amaethyddol) (Cymru) 2021.
On 23 March 2022, the High Court in Cardiff handed down its judgment on the challenge brought by NFU Cymru to Welsh Government’s decision to introduce the Water Resources (Control of Agricultural Pollution) (Wales) Regulations 2021.