Doug Liden is a water infrastructure engineer and cross-border environmental policy leader with more than three decades of experience addressing wastewater, drinking water, stormwater, and water reuse challenges along the U.S.-Mexico border. He joined the Institute of the Americas as a Non-Resident Fellow in 2026 after a 34-year career with the U.S. Environmental Protection Agency. For nearly two decades, Liden served as EPA’s U.S.-Mexico Border Water Engineer, managing major infrastructure projects and contributing technical leadership to efforts addressing contamination and wastewater flows in the Tijuana River watershed and other border communities.
