MIT scientists have developed an inexpensive, solar-powered water treatment system for rural Indian villages, which lack affordable potable water and electricity.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/cheap-water-treatment-device-rural-india
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/telangana
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wastewater-treatment
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rural-water-supply
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/solar-energy
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/hyderabad-d
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/scientists