The planned project is the reconstruction and expansion of the existing mechanical and biological sewage treatment plant on plots located in the village of Izbiska, Wadowice Municipality Upper to the capacity of Qśr.d. = 800 m³/d with equivalent number of inhabitants of RLM = 6500.The planned project consists of the construction of the building of the existing buildings of the sewage treatment plant. Existing energy connections and water connections will be used. The current biological reactor will be adapted to a storage tank. The main purpose of the project is to equip the Wadowice Upper agglomeration with a modern sewage treatment plant located in the town of Izbiska with the required capacity of 800 m³/d, which will ensure wastewater treatment from all residents living in the agglomeration. The specific objective is to introduce a modern technology for the treatment and control of the technological process, which will increase the efficiency of the collection and treatment of waste water in the agglomeration of Wadowice Górne.