Section 1. Be it enacted, &c., That whenever any municipal corporation in this Commonwealth shall supply water to the public, shall have found, or shall find, it necessary, in storing water, to occupy and flow with water portions of any turnpike or any public road in this Commonwealth, or where any public road now leads into, crosses over or through any reservoir used for the storing of water, the said municipality shall cause the same to be reconstructed forthwith, at its own proper expense, on a favorable location and in as perfect a manner as the original road, and for such purpose are authorized to condemn land for that purpose whenever an agreement as to price cannot be had with the owners. And after such change is made, such municipality shall file in the court of quarter sessions of the proper county a map or plan showing such change of road, and shall furnish to the supervisors or other public authorities of the township or municipal corporation a copy of such map and the changes made.