Ratan Tata , Chairman , TATA group , during the launch of ' Tata Swach ', a water purifier from TATA chemicals . Ratan Tata , Chairman of the TATA group , is seen during the launch of ' Tata Swach ', a water purifier from TATA chemicals , in Mumbai , India , 07 December 2009 . According to a press release , Tata Swach is na innovative water purifier , requiring no energy or running water to operate and is based on low cost natural ingredients , delivers safe drinking water at INR 30 ( some 0 . 434577 EUR ) per month for a family of five . EPA / STR < 뉴스 의 새 시대 , 연합뉴스 Live > < 연합뉴스 폰 > < 포토 매거진 >< 저작권자 ( c ) 연합뉴스 . 무단 전재 - 재배 포금 지 . >