Bollywood super star Aamir Khan on Tuesday advocated water conservation and the need for rainwater harvesting. "We should not only make water coservation a habit in our daily lives but also work hard to harvest rainwater so that in later years we can deal with water shortage," he said at the launch of 'Satyamev Jayte Water Cup 2017' in the presence of Maharashtra Chief Minister Devendra Fadnavis. "Satyameva Jayate Watercup" song is composed by Ajay-Atul and is directed by Nagraj Manjule of 'Sairat' fame. "A new singer has been introduced. Kiran has made her debut in singing with this song," said the "PK" star.