Pradeep has already run small-scale field trials and found the filters to be effective. Working with a Madras-based start-up that will make and assemble the filters, his team plans to distribute 2,000 supersize versions of the filtration system, each meant to serve about 300 people. These community units will provide water for about 600,000 people in the state of West Bengal and allow Pradeep’s team to test how effective their technology is at clearing contaminants—especially arsenic, which occurs naturally in groundwater there—on a larger scale.
“Water means health, education and overall well-being of a society,” Pradeep observes. “This is how these technologies are going to make an impact in places such as India.”