To amend the Reclamation Wastewater and Groundwater Study and Facilities Act to authorize the Secretary of the Interior to participate in the Prado Basin Natural Treatment System Project, to authorize the Secretary to carry out a program to assist agencies in projects to construct regional brine lines in California, to authorize the Secretary to participate in the Lower Chino Dairy Area desalination demonstration and reclamation project, and for other purposes.

Summary: Santa Ana River Water Supply Enhancement Act of 2009 - Amends the Reclamation Wastewater and Groundwater Study and Facilities Act to authorize the Secretary of the Interior, in cooperation with: (1) the Orange County Water District (the District), to participate in the design, planning, and construction of natural treatment systems and wetlands for the flows of the Santa Ana River, California, and its tributaries into the Prado Basin; (2) local governments, to assist agencies in projects to construct regional brine lines to export the salinity imported from the Colorado River to the Pacific Ocean; and (3) the Chino Basin Watermaster, the Inland Empire Utilities Agency, and the Santa Ana Watershed Project Authority, to participate in the design, planning, and construction of the Lower Chino Dairy Area desalination demonstration and reclamation project. Limits the federal share of total project costs. Prohibits using funds provided by the Secretary for operation and maintenance of the projects. Terminates the Secretary's authority to carry out this Act after 10 years.

SECTION 1. SHORT TITLE.

    This Act may be cited as the ``Santa Ana River Water Supply 
Enhancement Act of 2009''.

SEC. 2. PRADO BASIN NATURAL TREATMENT SYSTEM PROJECT.

    (a) In General.--The Reclamation Wastewater and Groundwater Study 
and Facilities Act (Public Law 102-575, title XVI; 43 U.S.C. 390h et 
seq.) is amended by adding at the end the following:

``SEC. 16__. PRADO BASIN NATURAL TREATMENT SYSTEM PROJECT.

    ``(a) In General.--The Secretary, in cooperation with the Orange 
County Water District, shall participate in the planning, design, and 
construction of natural treatment systems and wetlands for the flows of 
the Santa Ana River, California, and its tributaries into the Prado 
Basin.
    ``(b) Cost Sharing.--The Federal share of the cost of the project 
described in subsection (a) shall not exceed 25 percent of the total 
cost of the project.
    ``(c) Limitation.--Funds provided by the Secretary shall not be 
used for the operation and maintenance of the project described in 
subsection (a).
    ``(d) Authorization of Appropriations.--There is authorized to be 
appropriated to carry out this section $20,000,000.
    ``(e) Sunset of Authority.--This section shall have no effect after 
the date that is 10 years after the date of the enactment of this 
section.''.
    (b) Conforming Amendment.--The table of sections in section 2 of 
Public Law 102-575 is further amended by inserting after the last item 
the following:

``16__. Prado Basin Natural Treatment System Project.''.

SEC. 3. REGIONAL BRINE LINES.

    (a) In General.--The Reclamation Wastewater and Groundwater Study 
and Facilities Act (Public Law 102-575, title XVI; 43 U.S.C. 390h et 
seq.) is further amended by adding at the end the following:

``SEC. 16__. REGIONAL BRINE LINES.

    ``(a) Southern California.--The Secretary, under Federal 
reclamation laws and in cooperation with units of local government, may 
assist agencies in projects to construct regional brine lines to export 
the salinity imported from the Colorado River to the Pacific Ocean as 
identified in--
            ``(1) the Salinity Management Study prepared by the Bureau 
        of Reclamation and the Metropolitan Water District of Southern 
        California; and
            ``(2) the Southern California Comprehensive Water 
        Reclamation and Reuse Study prepared by the Bureau of 
        Reclamation.
    ``(b) Agreements and Regulations.--The Secretary may enter into 
such agreements and promulgate such regulations as are necessary to 
carry out this section.
    ``(c) Cost Sharing.--The Federal share of the cost of a project to 
construct regional brine lines described in subsection (a) shall not 
exceed--
            ``(1) 25 percent of the total cost of the project; or
            ``(2) $40,000,000.
    ``(d) Limitation.--Funds provided by the Secretary shall not be 
used for operation or maintenance of any project described in 
subsection (a).
    ``(e) Sunset of Authority.--This section shall have no effect after 
the date that is 10 years after the date of the enactment of this 
section.''.
    (b) Conforming Amendment.--The table of sections in section 2 of 
Public Law 102-575 is further amended by inserting after the last item 
the following:

``16__. Regional brine lines.''.

SEC. 4. LOWER CHINO DAIRY AREA DESALINATION DEMONSTRATION AND 
              RECLAMATION PROJECT.

    (a) In General.--The Reclamation Wastewater and Groundwater Study 
and Facilities Act (Public Law 102-575, title XVI; 43 U.S.C. 390h et 
seq.) is further amended by adding at the end the following:

``SEC. 16__. LOWER CHINO DAIRY AREA DESALINATION DEMONSTRATION AND 
              RECLAMATION PROJECT.

    ``(a) In General.--The Secretary, in cooperation with the Chino 
Basin Watermaster, the Inland Empire Utilities Agency, and the Santa 
Ana Watershed Project Authority and acting under the Federal 
reclamation laws, shall participate in the design, planning, and 
construction of the Lower Chino Dairy Area desalination demonstration 
and reclamation project.
    ``(b) Cost Sharing.--The Federal share of the cost of the project 
described in subsection (a) shall not exceed--
            ``(1) 25 percent of the total cost of the project; or
            ``(2) $50,000,000.
    ``(c) Limitation.--Funds provided by the Secretary shall not be 
used for operation or maintenance of the project described in 
subsection (a).
    ``(d) Authorization of Appropriations.--There are authorized to be 
appropriated such sums as are necessary to carry out this section.
    ``(e) Sunset of Authority.--This section shall have no effect after 
the date that is 10 years after the date of the enactment of this 
section.''.
    (b) Conforming Amendment.--The table of sections in section 2 of 
Public Law 102-575 is further amended by inserting after the last item 
the following:

``16__. Lower Chino dairy area desalination demonstration and 
                            reclamation project.''.