Why? Over 1.3 billion people worldwide drink unsafe water. Ripple Effect, a collaboration between the Acumen Fund, IDEO, and Indian and Kenyan water organizations, stimulates innovation among water suppliers. In Indias Thar Desert region, the Jal Bhagirathi Foundation developed a new business model to convince communities to purchase treated water. In the Andhra Pradesh region, WaterHealth International has used entertainment-based education to encourage the community to use clean water.