Universidad Autónoma Metropolitana researchers developed a 30-minute process to recover 99% of the dirty water from a car wash.
Legislators in Peru as well as in Bolivia are analyzing a series of measures to clean up South America's largest freshwater body.
The local livestock union calls on the government to declare a state of emergency amid the region's worst drought in some 30 years.
The storm that passed through the Caribbean last week damaged agricultural crops but also increased low water levels.
The Argentine province will review a proposal that delimits rural and urban areas to differentiate water use.