BJP holds protest outside CM Kejriwal's residence over clean water

BJP workers and leaders protest near Chief Minister Arvind Kejriwal's residence with water samples, after in rankings released by Bureau of Indian Standards on quality of tap water, Delhi was at the bottom.
BJP alleged Delhi government of supplying poisonous water in name of free water. 
Delhi Chief Minister Arvind Kejriwal today in a tweet, yet again raised question on the credibility of samples taken for water quality test.