The US National Hurricane Center said Irma is "potentially catastrophic."
Local legislators are suggesting that the site be used as an ecological reserve that can help to collect rainwater and supply neighboring areas.
The Brazilian construction company allegedly knew the details of a potable water plant half a year before the official tender was launched.
Projects will require a total of US$9.5bn funding, and will bring water coverage to 100% of the population of urban areas and sewerage services to 75% of the population.
Copasa will be spending almost US$170mn over the next five years for the preservation of the Rio das Velhas basin.
Mexico City lawmaker Janet Hernández, who is the secretary of the congressional water committee, spoke with BNamericas about the water problems facing the capital.
The supreme court has prohibited Rio de Janeiro's state government from obtaining loans from state-run banks by using water utility Cedae as a guarantee.
The water utility says a price increase of more than 10% is necessary for its investment program.
The government is seeking to halt the dumping of provincial cities' raw sewage into water sources.