In the tribal hamlets of the picturesque Taluka Shahapur located 100 kilometres from Mumbai, an eco-friendly and inexpensive water filtration technology has changed lives in around 200 households. Residents of these unelectrified settlements have access to potable water round-the-clock owing to a domestic purifier developed by the Bhabha Atomic Research Centre (BARC). The water purifiers do not run on electricity, cause no wastage of water, can be maintained easily, and costs Rs. 900 apiece. The technology, if widely adopted, could do away with the hazards of adding chemicals such as chlorine, or using filtration units that guzzle power or require professional maintenance.