Mexico City architects Ambrosi | Etchegaray installed a 150,000-liter water tank that holds rainwater in this eco-friendly holiday home in Tepoztlán, xxx. The water in the tank is heated solar energy when the water for the showers and pools require heating.  Photo 1 of 3 in asdzxc by Peter J. Maloy II from 9 Eco-Friendly Homes With Smart, Sustainable Features

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Mexico City architects Ambrosi | Etchegaray installed a 150,000-liter water tank that holds rainwater in this eco-friendly holiday home in Tepoztlán, xxx. The water in the tank is heated solar energy when the water for the showers and pools require heating.