Researchers at IIT Guwahati have developed a rotating-anode electrocoagulation system that can remove arsenic and fluoride from groundwater simultaneously within minutes. The technology achieved up to 98.2% arsenate and 91.8% fluoride removal in experiments, with an estimated operating cost of Rs 18–Rs 58 per 1,000 litres. Tested with real groundwater from Assam, the system could eventually support affordable community water treatment, although further pilot-scale testing is needed before large-scale deployment.
