Ohio Rev. Code Ann. § 743.07

Subject to Title VII of the Revised Code, the director of public service may make contracts for the building of machinery, water-works buildings, reservoirs, and the enlargement and repair thereof, the manufacture and laying down of pipe, the furnishing and supplying with connections all necessary fire hydrants for fire department purposes, keeping them in repair, and for all other purposes necessary to the full and efficient management and construction of water works.