Commissioning is one of the most important stages in preparing any technical systems for launch, including sewage treatment plants. Thanks to them, the installed equipment is brought to optimal operating modes, and the entire system goes to the most efficient functioning scheme. Commissioning requires knowledge of the nuances of the entire treatment plant and each individual equipment, installations, and systems included in it. All this is available to the SUECO company, which carries out commissioning work under the Contract for the device, reconstruction, repair, modernization of sewage treatment plants.