Tetra Tech, Inc. is a leading provider of consulting, engineering, program management, and construction management services focused on water, environment, sustainable infrastructure, resource management, energy, renewable energy, and international development. The company operates through two primary segments: the Government Services Group, which delivers services to U.S. federal, state, local governments, and worldwide development agencies, including water resources analysis, environmental monitoring, data analytics, waste management, and resilient infrastructure planning; and the Commercial and International Services Group, serving U.S. commercial clients and international markets in countries such as Canada, Australia, New Zealand, the United Kingdom, Brazil, and Chile with expertise in infrastructure, environmental engineering, and project management. Tetra Tech addresses complex challenges across the entire water cycle, environmental protection and restoration, and resilient infrastructure design for public and private clients globally. Founded in 1966 and headquartered in Pasadena, California, the firm supports diverse sectors through high-end technical solutions worldwide.