The article discusses the basic problems that occurred in the case law of the Supreme Administrative Court in cases regarding environmental legal protection. They concern in particular environmental issues in the field of burning hazardous medical and veterinary waste, greenhouse gas emissions, sewage disposal, non-compliance fees, as well as fees charged for the use of the environment. In addition, a large number of cases relate to the issues of environmental impact assessments. In the above cases, the case law of the Supreme Administrative Court shapes their correct interpretation as well as proper application by public administration bodies.