In this episode, recorded on November 19, Avinash Krishnamurthy, co-founder of Biome Environmental Trust, a sustainable development think tank and consultancy, and Vikas Brahmavar and Gowthaman Desingh, co-founders of Boson Whitewater, a water treatment venture backed by investors including Rainmatter, talk about a landmark collaboration to return potable-quality treated wastewater to communities in Devanahalli town, on the outskirts of Bengaluru city. They also talk about how this project can be a model with lessons relevant across India.