Ray Ehrhard

Ray Ehrhard

Senior Lecturer

Energy, Environmental & Chemical Engineering

  • Phone
  • Office
    Brauer Hall, Room 3021


BS Civil Engineering, Missouri S&T, 1977
Registered Professional Engineer
Board Certified Environmental Engineer


Teaches practical evaluation and analysis involving rising concerns in the environmental field focusing on water, wastewater and energy solutions.


Ray Ehrhard conducts collaborative research with government agencies, electric utilities, water and wastewater facilities, and technology developers to pilot proof of concept pollution control and energy management technologies and solutions. This work focuses on novel pollution control technologies while understanding the energy impact. Ehrhard also serves as the student mentor and Responsible Engineer In Charge (REIC) for Washington University’s Engineers Without Borders (EWB) student chapter. Classes taught include; Sustainability Exchange: Community and University Practicums, Special Topics: Introduction into Zymurgy, International Experience in EECE, and Independent Study. 


In 1994 Ray Ehrhard joined Washington University as the Deputy Director of the EPRI (Electric Power Research Institute) Community Environmental Center. The EPRI Center managed a national research program to further the development of technical solutions and energy management principles affecting drinking water and wastewater facilities in the US and abroad. He continues to conduct collaborative studies with government agencies, electric utilities, and private engineering companies bridging the gap from basic research to practical applications for environmental solutions. His previous positions included wastewater facility design and permit approvals at the Illinois EPA and working as the environmental manager at a major manufacturing industry.