Er bod y rheoliadau hyn wedi’u datblygu’n bennaf i atal llygru annerbyniol o gyrsiau dŵr, mae ffactorau amgylcheddol eraill wedi’u hystyried. Bydd y rheoliadau hyn yn arwain at ddefnyddio maethynnau’n fwy effeithiol ar ffermydd ac felly at ollwng llai o amonia i’r atmosffer.  Mae’r rheoliadau hyn yn rhan allweddol o’n hymdrechion i leihau allyriadau nwyon tŷ gwydr amaethyddiaeth ac i wella ansawdd aer a thrwy weithio ar lefel Cymru gyfan, adlewyrchir cyngor Pwyllgor Newid Hinsawdd y DU yn ei adroddiad “Land Use: Policies for a net zero UK”.
Whilst these regulations have been developed primarily to prevent the unacceptable pollution of watercourses, other environmental considerations have been taken into account. The implementation of the regulations will see nutrients used more efficiently on farms, resulting in lower losses of ammonia to the atmosphere. The regulations are a key part of reducing greenhouse gas emissions from agriculture to improve air quality and the whole Wales approach reflects the advice from the UK Climate Change Committee in their report “Land Use: Policies for a net zero UK”.