It has been determined by the General Assembly of this Commonwealth, and it is hereby declared as a matter of legislative finding that--
Therefore, it is hereby declared to be the policy of the Commonwealth of Pennsylvania to promote the health and welfare of the inhabitants thereof by the creation of corporate and politic bodies to be known as housing authorities. The public purposes for which such authorities shall operate shall be-- (1) the clearance, replanning and reconstruction of the areas in which slums exist; (2) the providing of safe and sanitary dwelling accommodations for persons of low income through new construction or the reconstruction, restoration, reconditioning, remodeling or repair of existing structures, so as to prevent recurrence of the economically and socially disastrous conditions hereinbefore described; and (3) the accomplishment of a combination of the foregoing. Such purposes are hereby declared to be public uses for which public money may be spent, and private property acquired by the exercise of the power of eminent domain.
35 P.S. § 1542