Clean Water for India: Innovation at the Indian Institute of Technology
About 239 million people in India drink arsenic-contaminated water. Professor Thalappil Pradeep and his team at the Indian Institute of Technology (IIT) Madras used Metrohm analysis to develop a water filter that has been integrated in hand pumps in schools and other public places, providing safe drinking water for more than eight million people. In Chennai, I met with Kamalesh Chaudhari, principal scientist at the IIT spin-off InnoNano Research, which commercialized the technology. He told me about the arsenic crisis in the state of West Bengal and how it is being addressed with the nanomaterial-based water filters.