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all things water®

Contact Us

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

(212) 539-7000

Andre Dieffenthaller, PE

Vice President

Andre Dieffenthaller, PE

Andre is the Operations Manager for Hazen’s offices in Sarasota and Tampa, Florida. He has extensive experience in the planning, design, permitting, and construction management of water and wastewater treatment improvements. He has managed or acted as project director on large multi-million projects and has earned a reputation for successfully managing/directing projects within budget and on schedule, including under challenging conditions.

Areas of Expertise
• Water treatment plant design
• Process evaluations
• Master planning
• Condition assessments
• Project management
Professional Activities
American Water Works Association (AWWA)
Water Environment Federation (WEF)
Southeast Desalting Association (SEDA)
MS, Civil Engineering, Rutgers University
BS, Civil Engineering, Princeton University
Professional Engineer (PE)