A statement from Acciona claims that it will now take full charge of the works and management of the second phase of the project, but Odebrecht denied this in a statement of its own.
The water utility is being accused of providing inaccurate information regarding the state of the network, and of not following instructions from the regulator.
The Viracopos airport concessionaire has a debt of around US$800mn with several banks, according to local daily O Estado de S. Paulo.
The US$160mn reservoir for the Valparaíso (V) Region is one of three water storage structures that will be tendered this semester, as the government speeds up its public works agenda on its last year.
The public works minister argued that the comptroller, who recommended voiding the tender, does not have "unlimited powers to do and say whatever it wants." Meanwhile, a court rejected a separate accusation against the project's evaluation committee.
A local water utility had to temporarily stop water intake in one of the sections of the Magdalena river.
The concessionaire that will build the government complex was seeking alternative options to finance the project in case the social security institutions declined to invest, according to reports.
The company will invest 2.5mn reais in water and sanitation in the city.
Moody's slashed the troubled company's ratings and maintained a negative outlook on the ratings.