A host of Resident Welfare Associations (RWAs) in the Capital are coming out to help each other in making their localities eco-friendly. The collective project being undertaken has three focus areas — solar power, rainwater harvesting and waste management.According to Atul Goyal, the convenor of the United RWAs Joint Action (URJA) Front, about 95 per cent of the existing rainwater harvesting chambers in Delhi is lying defunct. In a bid to conserve the old water harvesting units, URJA Front, which is an umbrella body of about 850 RWAs in the city, has chalked out a pilot project to revive 50 of them. While restoration of one such harvesting unit has been completed in Defence Colony, some other areas where work is yet to be completed include Vasant Kunj, Gargi College, Chittaranjan Park and so on.“Rainwater harvesting chambers in Delhi are dying due to the absolute neglect of the municipal corporations and the Delhi government. Instead on creating new chambers and later rendering tem defunct, we have decided to help smaller RWAs in maintaining the existing ones,” said Mr. Goyal.Maintenance of a regular rainwater harvesting unit would cost the residents of a locality anywhere between Rs. 5,000 to Rs. 10,000 annually, depending on the size.