Tetra Tech, Inc. operates as a global provider of specialized consulting and engineering services. The firm organizes its activities into two primary divisions: the Government Services Group (GSG) and the Commercial/International Services Group (CIG). The GSG division delivers a comprehensive suite of solutions, encompassing initial data collection and ongoing monitoring, advanced data analytics and information management, practical scientific and engineering research, intricate engineering design, thorough project management, and continuous operations and maintenance support.