Hiroko Yoshida (Yoshi) is a senior environmental engineer specializing in wastewater and waste management. Much of her career has focused on resource efficiency, resource recovery, and process optimization through hands-on data collection, alternative assessments, and process modeling. She has worked on projects across a wide range of industries, including municipal water and wastewater treatment plants, agricultural digesters, paper and steel mills, and food processing facilities.

At ERG, Yoshi focuses on two key areas: conducting life cycle assessments and life cycle cost analyses for waste and wastewater treatment systems to support policy and program-level decision-making and providing technical assistance to small and mid-sized communities to help address infrastructure funding gaps. 

Yoshi holds an M.S. in water resource management and environmental engineering from the University of Wisconsin-Madison, and a Ph.D. in environmental engineering from the Technical University of Denmark. She is a licensed environmental engineer in Wisconsin. In her spare time, she enjoys visiting museums, restoring oak savannas, and traveling with family and friends.