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This profile was last updated on 1/2/16  and contains information from public web pages and contributions from the ZoomInfo community.

Michael P. Wehner

Wrong Michael P. Wehner?

Assistant General Manager

Phone: (714) ***-****  
Email: m***@***.com
Orange County Water District
18700 Ward Street
Fountain Valley , California 92708
United States

Company Description: Orange County Water District (OCWD) was formed in 1933 by a special act of the California State Legislature to protect Orange County's rights to water in the Santa...   more

Employment History

  • Assistant General Manager
    The OC Water District
  • Assistant General Manager
    WateReuse Association
  • Water Quality Program Chief
    Orange County Environmental Health Department

Board Memberships and Affiliations


  • Master , Public Works Administration
    California State University , Long Beach
  • Bachelor's degree , Biological Sciences
    University of California , Irvine
26 Total References
Web References
Michael P. ..., 2 Jan 2016 [cached]
Michael P. Wehner
Assistant General Manager
Mike Wehner ..., 29 Oct 2009 [cached]
Mike Wehner
Data Instincts: California Drought: Orange County expands 'toilet to tap' water recycling, 6 Mar 2014 [cached]
Dewane and OCWD Assistant General Manager Michael Wehner showed us around the treatment plant, where shiny stainless steel tubes and tanks fill several large buildings.
Microfiber membranes First, to filter out bacteria, particles and protozoa, the sewer water is forced by air pressure through a series of microfibers, straw-like plastic membranes, with holes so tiny you can't see them with the naked eye. The next stop is a pump station. Wehner said the pump station is "where the water that's been vacuumed through those hollow fibers is basically accumulated in a tank and transferred over to the reverse osmosis facility. Wehner said reverse osmosis or "R-O" is the heart of the largest potable reuse facility in the world. The water is pushed through plastic R-O membranes that remove nearly everything that isn't H2O. The R-O process removes dissolved chemicals, pharmaceuticals and viruses. "There is 70 million gallons a day of R-O capacity," said Wehner, as he pointed to hundreds of tubes. "Each of these units represents five million gallons a day. And you can see all of the units as you look across, you look at endless pressure vessels that hold these spiral wound R-O membranes. The last step is to add peroxide (H2O2) to the water before it is sent through pipes where it is exposed to ultraviolet light that "kills anything that's alive," Wehner said. The end result is distilled water. "It's actually purer than any other source of water that we have to put into our groundwater basin," he said.
"The San Fernando Valley and the San Gabriel Valley have groundwater resources," said Wehner.
You are here: Home / About ..., 2 Jan 2016 [cached]
You are here: Home / About / Departments / Executive bios / Michael P. Wehner, Assistant General Manager
Michael P. Wehner
Assistant General Manager
Michael (Mike) P. Wehner is the Assistant General Manager at Orange County Water District and is directly responsible for managing Water Quality and Technology functions at the District.
During his time with the District, Mike has implemented a proactive water quality program that includes a comprehensive monitoring protocol, use of outside expert water quality studies and independent advisory panels, and a water quality program for the county's new water purification project - The Groundwater Replenishment (GWR) System. He has been with the District since 1991 when he was hired as the Health and Regulatory Director. Prior to OCWD, he spent 20 years with the Orange County Environmental Health Department where he was Water Quality Program Chief.
Mike is an internationally recognized expert in water quality and technology and has served on numerous advisory panels for the National Water Research Institute, the WateReuse Research Foundation, the National Academy of Science, the Water Research Foundation, the State Water Resources Control Board, the California Department of Public Health, US EPA, United Kingdom Water Industry Research, CSIRO in Australia and PUB in Singapore.
Mike earned his Bachelor's degree in Biological Sciences from University of California, Irvine, and his Master's in Public Works Administration from California State University, Long Beach.
Michael Wehner, ..., 23 Feb 2011 [cached]
Michael Wehner, WateReuse Research Foundation Board Member; Assistant General Manager, Orange County Water District, CA
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