Rainwater Harvesting Helps Families in Rajasthan, India. Using Rain for Drinking Water. Safe Water Network supported an innovative project in the Churu district of Rajasthan, India, to harvest rain water from roof tops in water tanks (called kunds in Hindi) for more than 1000 families in 55 villages during the period 2008-2010. The majority of these families were very poor. Bhoruka Charitable.