The aim of this thesis is to examine how the EU directive 2004/35/EC on environmental liability impacts the Swedish administrative legal order. The thesis examines the directive through two main EU principles - the principle of good administration and the principle of procedural autonomy. The EU principle of good administration as a concept contains various procedural and substantive obligations that make up the subject for examination of the directive, both as regulated in the directive and as general principles of EU law. The directive is analyzed using a comparative method to determine to what extent the procedural and substantive principles of the directive impacts the Swedish administrative law, and weather or not the Swedish regulations comply with the EU principle of good administration. The results of the study shows that, althought there’s a general principle of national procedural autonomy, the EU principles of good administration do affect the Swedish administrative regulation in various aspects, through the implementaion of the directive on environmental liability as well as general principles of EU law. Furthermore the study shows that the Swedish regulations that are used to implement the directive don’t always act in accordance with the EU principles of good administration in certain areas, which potentially could restrain the impact of the directive in the Swedish legal order.