The ex-MLA's indefinite hunger strike over the issue entered the third day today.
"The colonies are standing on 'barood' (explosives) and an untoward incident may occur any day. The Delhi Government and Municipal Corporation have not learnt any lesson," a statement quoted Sharma as telling a gathering of locals at the agitation site of Mohan Garden area.
Holding BJP-led MCD and the AAP government responsible for "unliveable" conditions in unauthorised colonies in Delhi, Sharma reiterated that notwithstanding his protest, roads in the area remain water-logged even as garbage heaps are piling up and sewers getting choked.