The state governments expressed their resolve to end the menace as India played global host to 2018 World Environment Day celebrations with the theme "Beat Plastic Pollution".
Singh addresses a first-ever meeting of chief ministers of five Himalayan states.
After the setback in the Lok Sabha election, the ruling Congress on Friday recorded a big win in the bypoll to three assembly seats in Uttarakhand retaining Dharchula seat which went to Chief Minister Harish Rawat and wresting Doiwala and Someshwar seats from Bharatiya Janata Party.
Controversial Bharatiya Janata Party leader and Gujarat Chief Minister Narendra Modi's Man Friday Amit Shah arrived in Lucknow on Wednesday to take over the reins of the party in the country's most populous state, which he himself termed as the route to the ultimate seat of power in Delhi.
Congress chief Sonia Gandhi, vice president Rahul Gandhi, Left parties and CMs of various states congratulated Kovind.
Narendra Modi's stamp was written all over as the Bharatiya Janata Party announced its election campaign committee for 2014 polls on Friday including top leaders Murli Manohar Joshi, Sushma Swaraj and Arun Jaitley who will work under him.