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all things water®

Contact Us

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

(212) 539-7000

Stephanie Ishii PhD, PE, ENV SP


Stephanie Ishii PhD, PE, ENV SP

Stephanie is Hazen’s Director of Integrated Resource Technologies. She also leads the Water Reuse Practice and Sustainability Services for the Southeast Region. Stephanie specializes in evaluations of water supply, water/wastewater treatment, and effluent management options, using multi-criteria decision analysis to incorporate economic, environmental, and community criteria into the decision-making process. Throughout her career, Stephanie has helped municipalities engage stakeholders and leverage efficiencies across service programs to provide comprehensive and affordable solutions that benefit multiple perspectives.

Areas of Expertise
• Water reuse
• Water treatment
• Water quality
• Bench/pilot testing
• Greenhouse gas assessment, lifecycle assessment
• Decision theory
• Regulatory engagement
Professional Activities
American Water Works Association (AWWA)
WateReuse Association
PhD, University of Florida, Environmental Engineering
ME, University of Florida, Environmental Engineering
BS, University of Florida, Environmental Engineering
Professional Engineer
Envision Sustainability Professional