Delhi-NCR twins build Rs 100 water filter that removes up to 93% of PFAS
Delhi-NCR twins Naina and Nayantara Singh developed Aqua Sattva, a plant-based water filter that removes up to 93% of PFAS and microplastics. The system uses okra, fenugreek, and rice husk, and has been independently tested for its effectiveness. Their affordable prototype, priced at ₹100, aims to enhance access to safe drinking water.