The preparation of the final work will be carried out with a presentation of the procedural rules of the administrative action of the public law body prescribed by the Law on General Administrative Procedure with the application of material provisions from the Law on Water and the Law on Financing of Water Management. The aim of this paper is to present the procedure for determining the payer and the amount of the water fee, i.e. the fee for water management, which is regulated by the Law on Water Management Financing. The fee for water management is resolved by an administrative procedure regulated by the Law on General Administrative Procedure. The paper will describe the legal status of water and water assets, water fees, the relationship between water management fees and utility fees, the method of passing a decision on liability for water management fees, taking into account the rights and duties of the parties, and the method of obtaining the evidence that is necessary to the factual situation would be established. It will describe the adoption of a decision on enforcement, legal remedies, and the procedures of the first- and second-instance bodies in the context of an appeal. Next, the prescription of the amount of water management fee based on the Regulation on the amount of water management fee and the Decision on the National Classification of Activities - NCA) and the allocation of income from the fee will be described. All theoretical parts will be supported and explained with practical examples.