The petition said that a heat wave should be considered on a par with other disasters as per Article 14 of the Constitution.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/petition-supreme-court-seeks-measures-combat-heat-wave
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/heat-waves
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/supreme-court
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/public-interest-litigation-pil
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drinking-water
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/natural-disasters