The Best Practice has been validating by the detailed monitoring campaign done during the project. Moreover, the HYDRO 1 (without UV disinfection) has passed the Quick Scan phase for ETV (European Technology Verification) as a wastewater treatment solution discharging with effluent quality in class A of European Regulation 2020/741 in class A (highest quality). The SVP (Specific Verification Protocol) is expected to be submitted by the end of the year. The ETV is expected to be got by the end of the project (July 2023).