To authorize the Secretary of the Army and the Administrator of the Environmental Protection Agency to conduct certain water reclamation projects, and for other purposes.

Authorizes the Secretary of the Army to participate in the study, engineering, design, and construction of a regional water reclamation and reuse system for southern California. Bars the Secretary from providing funds for the operation and maintenance of the system.

Authorizes the Secretary to study, engineer, design, and construct water reclamation and reuse demonstration facilities to develop advanced technology for economically and environmentally sound alternative water supplies for the San Diego metropolitan area. Directs the Secretary to: (1) carry out such provisions in cooperation with the State of California and appropriate local and regional entities; and (2) report to specified congressional committees within two years of the first appropriation of funds.

Authorizes the Administrator of the Environmental Protection Agency, subject to specified restrictions, to participate with: (1) the city of Santa Rosa, California, and other appropriate authorities in the design, planning, and construction of water reclamation and reuse projects to treat waste water and store reclaimed water for such city and surrounding areas; and (2) the county of Napa, California, and other appropriate authorities in the expansion of the Soscol Wastewater Treatment Plant.

Limits the Federal share to 50 percent of the costs of projects authorized by this Act.