(a) General rule.--A borough may, by ordinance, acquire ownership of storm sewers, culverts and the necessary inlets and appliances for surface, under surface and storm sewer drainage by purchase, by the exercise of eminent domain pursuant to 26 Pa.C.S. (relating to eminent domain) or by gift from the owner or owners.
(b) Eminent domain.--In eminent domain proceedings, the viewers shall assess the costs and expenses of the storm sewer, culverts, inlets and appliances acquired by the borough upon the property or properties benefited according to benefits. Any deficiency that is not assessed upon the benefited property or properties shall be paid by the borough.