Revolutionary Water Purification System Delivers 1,000 Litres for Just ₹20

Scientists at IIT Guwahati have developed a low-cost, efficient water treatment system that removes fluoride and iron from contaminated groundwater for just ₹20 per 1,000 litres. Targeting regions like Rajasthan, Telangana, and Assam affected by skeletal fluorosis, the four-stage system uses aeration, electrocoagulation, flocculation, and filtration to purify up to 20,000 litres daily. It removes 94% iron and 89% fluoride, meeting Indian safety standards. Designed for minimal maintenance, it has a 15-year lifespan. A successful pilot was installed in Changsari, Assam. Future upgrades include solar power and smart controls to benefit remote and fluoride-affected communities across India.