In addition to the powers and authority hereinbefore granted, power and authority is hereby conferred upon the department, after due notice and public hearing, to make, adopt, promulgate, and enforce reasonable orders and regulations for the protection of any source of water for present or future supply to the public, and prohibiting the pollution of any such source of water rendering the same inimical or injurious to the public health or objectionable for public water supply purposes.
35 P.S. § 691.501