framework agreement for the assignment of engineering services relating to the withdrawal, treatment, storage tank and distribution of water resources – Construction / adaptation of purification plants – Decommissioning of Imhof pits – Construction of sewage collectors – Construction of first rain tanks.

framework agreement for the assignment of engineering services relating to the withdrawal, treatment, storage tank and distribution of water resources – Construction / adaptation of purification plants – Decommissioning of Imhof pits – Construction of sewage collectors – Construction of first rain tanks.