Metropolitan is exploring a water purification project to reuse water currently discharged to the Pacific Ocean for recharge of regional groundwater basins. Through a partnership with the Sanitation Districts of Los Angeles County, Metropolitan would build a new purification plant and distribution lines to groundwater basins in Los Angeles and Orange counties. The program would represent the first in-region production of water by Metropolitan. Diversifying the region's water supply sources, advancing conservation and maintaining imported supplies are all part of Metropolitan's long-term
Integrated Water Resources Plan.
Read Metropolitan’s Press Release dated Jan. 9, 2017.
Learn more about the Program Advisory Panel.
AWT Demonstration Facility Project
Metropolitan's Board of Directors has awarded a $13.9 million contract to construct the recycled water demonstration facility.
Read Metropolitan's press release dated July 12, 2017
The primary objectives of the AWT Demonstration Facility are to obtain regulatory acceptance of the preferred process train, determine optimum process parameters for the full-scale AWT Facility, and provide a vehicle for public outreach.
To achieve these primary objectives as described in the
Feasibility Report (November 30, 2016), a process train consisting of Membrane Bioreactor (MBR), Reverse Osmosis (RO) and Ultraviolet/Advanced Oxidation Process (UV/AOP) will be evaluated at the demonstration-scale for a period of 12 months or more. The testing plan for the demonstration plant is currently under development, with input from the regulatory community. Regulatory requirements for indirect potable reuse via groundwater recharge include removal of pathogens as well as inorganic and organic compounds. It is anticipated that these requirements will be fully addressed in the final testing plan.
While the AWT Demonstration Facility is designed to accommodate multiple process trains, the initial construction will include the preferred MBR, RO and UV/AOP processes and provide for other unit processes, if required.
Click here for illustration.
Approach for Alternative Treatment Technology Acceptance
Letter to State Water Resources Control Board Division of Drinking Water (April 19, 2017)
State Water Resources Control Board Response (May 31, 2017)
Listen to General Manager Jeffrey Kightlinger discuss the proposed water recycling program as well as how it fits into Metropolitan's Water Tomorrow Integrated Water Resources Plan.
MWD board letter 8-3 and
staff presentation (July 2017)
MWD board item 6-A staff presentation (January 2017)
MWD Board letter 8-3
MWD board letter 8-3 and staff
presentation (November 2015)
MWD board item 6-C staff presentation (October 2015)
MWD board letter 9-1 and staff
presentation (September 2015)