TBF assisted the operator of the wastewater treatment system in the province of Sondrio in optimising the existing facilities and in drawing up a master plan for the future expansion of the treatment works and the sewerage network.

The study analysed the current situation and operational data and identified the associated problem areas. Scenarios for operational measures and structural modifications to the plant were subsequently developed.

A multi-criteria assessment weighing costs, timeframes and operational benefits was used to identify the optimal scenario. A master plan for future development, including a business plan, was drawn up based on this scenario.