Section 224(2) in West Bengal Municipal Corporation Act, 2006
(2)If any private street is constructed, or any wall or other structure is erected over any municipal drain, or if any wall, fence or structure is erected on the bed or embakment of any municipal sewage or storm-water channel or if any portion thereof is interfered with, encroached upon, altered or occupied without the permission, in writing, of the Commissioner, the Commissioner may remove or otherwise deal with the same in such manner as he may think fit, and the expenses incurred by the Corporation in so doing shall be paid by the owner of such private street, wall, or other structure or by the person who interferes with, or encroaches upon, or alters or occupies, as the case may be.