Delhi twins develop Rs 100 plant-based filter removing 93% of forever chemicals
Twin sisters Naina and Nayantara Singh from Delhi-NCR have created a low-cost water purification system called Aqua Sattva. The device uses natural ingredients — okra, fenugreek, and rice husk — to filter out harmful contaminants including microplastics and PFAS, commonly known as forever chemicals. Independent lab tests confirmed the system can remove up to 93% of these pollutants. Priced at just Rs 100, the eco-friendly prototype is designed to make clean drinking water accessible to a wider population.
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