Known as India’s Silicon Valley, Bangalore has seen its population swell from 5.1 million in 2001 to 12.3 million today. The consequences of that growth: mounting sewage and a shortage of water. “Water quality is a year-round problem for the low-income residents of Bangalore,” says Kaylea Brase, ’17 M.S., who developed an inexpensive filtration device through the U’s Acara program.