Biplab Ketan Paul is founder of Naireeta Services, an Indian social enterprise that has developed an innovative water management solution, the Bhungroo system, a unique irrigation system based on rainwater harvesting for farmers facing both drought and flooding situations  Paul, together with his wife Trupti Jain, has spent some 17 years developing and improving the Bhungroo system which now benefits some 100,000 farmers in India. Paul has won multiple awards for his work including the  Millennium Alliance Award for Global impact and India Innovation Growth Award-he is also an Ashoka fellow.