Bangalore Metro Rail Corporation (BMRC) is one of the urban utilities to have adopted rain water harvesting in a practical way. The Metro has made simple arrangements to catch all the rainwater that falls on its station areas and use the same for various non-potable uses.
Each of the six stations on the Metro's operational stretch between MG Road and Byappanahalli have water tanks of one lakh litre capacity each, to store rain water. "We make use of this for construction, landscaping and maintenance. The water collected on the tracks further enters the ground water chamber, which we can't quantify," said BMRC officials.
Source: The Times of India