Description: S. 649. AMEND THE FEDERAL WATER POLLUTION CONTROL ACT TO AUTHORIZE THE APPROPRIATION OF $20 MILLION ANNUALLY FOR 64--67 FOR GRANTS TO STATES & MUNICIPALITIES TO DEMONSTRATE METHODS OF SEPARATION OF COMBINED STORM & SANITARY SEWERS, & TO PROVIDE OTHER MEANS OF INCREASED FED. PARTICIPATION IN PREVENTING, CONTROLLING, & ABATING POLLUTION OF INTERSTATE & NAVIGABLE WATERS. PASSAGE.