The country's water regulator ruled that Essal, which serves the southern Los Lagos region, was responsible for "reiterated" unauthorized wastewater spills that affected a lake.
The Ciudad Juan Bosch housing development will see its potable water supply guaranteed thanks to the construction of a storage tank.
The works are being carried out at Pantitlán, the most important transfer station of the subway network that connects four lines.
The utility in the southern Brazilian state will install new pipeline in Arroio do Sal and Torres.
According to experts, the fiscal scenario will remain challenging in the coming years, forcing the next administration to look to the private sector for infrastructure investments.
The Quito metro project will receive US$230mn, while the remaining US$140mn will be used for the construction of a new wastewater treatment plant in Guayaquil, which will be tendered next week.
The funds for sanitation works in the capital of Colombia's Valle del Cauca department will come from the city, departmental and the national administrations. Projects had to be reevaluated due to the change of government.