C.1 Increase of robustness to the overall water supply system (e. g. increase of reliability)
C.2 Increase of capacity of the water supply system (e. g. increase of storage capacity and water transportation)
Family D: Impacts during the building of the new infrastructures
D.1 Impacts over the road users (social costs incurred over the users of the affected roads during construction works)
D.2 Impacts over neighbor zones (it goes beyond D.1 concerning the citizens living near the zones affected by construction works)
D.3 Interference with other existing infrastructures (other infrastructures exist in the underground, as gas, electricity, cable TV, that can be affected by the constructionworks; there is, at least, an associated risk of damage of other infrastructures when opening the ditch).