(a) General rule.--A city may construct, or cause to be constructed, sanitary sewage treatment works, which may be part of the same improvement and under the same contract as sanitary sewers.
(b) Location of construction.--Sewage treatment works may be erected within or outside the limits of the city.
(c) Eminent domain.--The city shall have authority to acquire, by eminent domain or otherwise, property within or, subject to the limitations in 26 Pa.C.S. § 206 (relating to extraterritorial takings), outside the limits of the city deemed necessary for the treatment works and the sewers leading to the treatment works.