Zerodha-backed venture firm Rainmatter has reportedly invested ₹10 crore in equity funding each into water recycling startup Boson Whitewater and nutrition-focused brand TruNativ. Boson Whitewater focuses on converting surplus sewerage treatment plant (STP) water into potable water. TruNativ offers nutritional products such as Everyday Protein, Everyday Fibre, and Everyday Sweetener.