To extend the Federal Water Pollution Control Act through fiscal year 1992.

Amends the Federal Water Pollution Control Act to extend through FY 1992 the authorization of appropriations for: (1) specified research, investigations, training, and information; (2) grants to States for pollution control programs; (3) the Great Lakes program; (4) nonpoint source pollution control in rural areas; (5) interagency agreements to maintain water quality; (6) the clean lakes program; and (7) nonpoint source pollution management programs. Extends the general authorization for such Act through FY 1992. Increases the amount authorized to be appropriated for the State water pollution control revolving fund program for FY 1992.