Located over 3,000 feet above sea level, Bengaluru depends heavily on the Cauvery river for water supply to its 1.2-crore denizens.
Rainwater harvesting has been made mandatory for all new houses and office buildings across the city to meet the need and reduce dependency on rivers and groundwater.
"The rainwater can be stored and used for gardening, washrooms, and the like to judiciously use the river water for drinking and cooking," added the official.
Meanwhile, marking 'World Water Day, the state government Monday signed an agreement with multi-business conglomerate ITC Ltd to develop a watershed in 10-lakh acres of land across the southern state in three years.
