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all things water®

Contact Us

498 Seventh Ave, 11th Floor
New York, NY 10018

(212) 539-7000

Fred Gerringer D.Env, PE, BCEE

Senior Associate

Fred Gerringer D.Env, PE, BCEE

Fred serves as Hazen and Sawyer’s West Region Water Reuse Practice Leader. He has managed projects at all stages of development, from initial planning and design through construction and startup. He also has extensive experience leading applied research projects in areas such as direct potable reuse and soil aquifer treatment that have benefited the potable reuse industry. Fred’s proficiency in advanced treatment processes includes membrane filtration, reverse osmosis, advanced oxidation, and ozonation. In recent years, he has applied his expertise to the management of complex water reuse projects for a variety of municipal clients. Fred was a member of the American Water Works Association California-Nevada Section and California Water Environment Association committee that developed a voluntary certification program for advanced water treatment operators in California and Nevada.

Areas of Expertise
• Water recycling and reuse
• Drinking water treatment
• Wastewater treatment
• Process design
• Regulatory compliance
• Ozone disinfection and oxidation
• Membranes
• UV disinfection and advanced oxidation
Professional Activities
American Water Works Association (AWWA)
Water Environment Federation (WEF)
International Ozone Association (IOA)
MS, Civil/Environmental Engineering, UCLA
BS, Civil/Environmental Engineering, University of California at Berkeley
Professional Engineer (PE)
Board Certified Environmental Engineer (BCEE)