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all things water®

Contact Us

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

(212) 539-7000

Erik Rosenfeldt, PhD, PE

Associate Vice President

Erik is Hazen’s Drinking Water Practice Lead and a senior member of the firm’s Reuse and Applied Research groups. As the national practice lead, he is responsible for developing the strategic direction of the group to ensure our continued high level of technical excellence, quality, and service in solving our clients’ most difficult challenges. As an expert in implementing conventional and advanced treatment for addressing emerging water quality challenges such as algal blooms and PFAS, Erik aims to lead Hazen’s Drinking Water team as we blend innovation and practicality for every project, continually striving to earn our place as our clients’ trusted advisor.

Areas of Expertise
• Physical/chemical processes
• Water process technology
• Bench/pilot testing
• Water chemistry
• Emerging contaminants
• Disinfection byproducts
• Advanced water treatment processes
Professional Activities
American Water Works Association (AWWA), Organic Contaminants Research Committee, Virginia Water Quality and Research Committee Chair
International Ozone Association (IOA)
International Ultraviolet Association (IUVA)
PhD, Environmental Engineering, Duke University
MS, Environmental Engineering, Duke University
BS, Chemical Engineering, Washington University
Professional Engineer (PE)