53 Pa. Stat. § 24131
The word "property" as used in this act shall be construed to mean and include lands, buildings, earth, sand, clay, gravel, rock, stone, wood, materials, springs, streams, rivers, lakes, easements, and rights of way together with any facilities constructed thereon.
The term "waterworks" as used in this act shall be construed to mean reservoirs, dams, storing lakes, power plants, viaducts, aqueducts, canals, tanks, cisterns, water mains and pipes, pumping stations, filtration plants, buildings, machinery, and any other works connected with a public water supply system and necessary for the collection, reception, storage, purification, conveyance, and distribution of water for domestic and industrial consumption.
The word "city" means a city of the second class.
53 P.S. § 24131