In addition to the increase in the extension of the service to populations not yet served in the area of influence of the System, the investment will allow the closure of the System and the optimisation of the operation and profitability of the respective investment related to the existing sewage treatment plant. This low network is dimensioned and will serve about 236 inhabitants of the parish of Santa Cruz, which implies a coverage rate will increase from 36 % to 44 % in the area of the System.