An Act amending the act of June 22, 1937 (P. L. 1987, No. 394), entitled, as amended, "An act to preserve and improve the purity of the waters of the Commonwealth for the protection of public health, animal and aquatic life, and for industrial consumption, and recreation; empowering and directing the creation of indebtedness or the issuing of non-debt revenue bonds by political subdivisions to provide works to abate pollution; providing protection of water supply; providing for the jurisdiction of courts in the enforcement thereof; providing additional remedies for abating pollution of waters; imposing certain penalties; repealing certain acts; regulating discharges of sewage and industrial wastes; regulating the operation of mines; and placing responsibilities upon landowners and land occupiers," requiring the board to take into consideration the risk of raw sewerage on the surface ground when establishing policy and priorities, limiting the authority of the Department of Environmental Resources and courts in requiring construction of sewerage facilities by municipalities, and prohibiting certain rules and regulations of the Environmental Quality Board which impose greater limitations than the minimal federal requirements.