Tetra Tech is a leading provider of consulting, engineering, and technical services around the world. The company is based in Pasadena, California, United States. It was founded in 1966 by four individuals with backgrounds in science and engineering.

Initially, Tetra Tech primarily focused on providing water-related services but soon expanded its expertise to include a wide range of environmental, infrastructure, and resource management solutions. Headquartered in Pasadena, Tetra Tech operates over 450 offices worldwide, serving clients in more than 120 countries. The company has established a global presence through a combination of organic growth and strategic acquisitions.

Tetra Tech offers a comprehensive range of products and services, including environmental consulting, water resources management, civil engineering, construction management, energy efficiency, and climate change mitigation. The company's expertise extends to sectors such as transportation, mining, renewable energy, and disaster response, among many others. Its services encompass all stages of a project's lifecycle, from initial planning and feasibility studies to design, implementation, and monitoring.

Over the years, Tetra Tech has expanded its operations by acquiring several notable subsidiaries and establishments. For instance, it acquired the British Columbia-based EBA Engineering Consultants, adding significant expertise in mining and oil and gas sectors. Tetra Tech has also formed partnerships and joint ventures with various organizations, including engineering firms and research institutions, to enhance its capabilities and global reach.

In terms of market position, Tetra Tech is recognized as one of the top engineering and consulting firms worldwide. Its extensive range of services and global presence contributes to its strong competitive advantage. The company has consistently achieved significant annual revenue growth, with global sales exceeding $3.

1 billion in 2020. Tetra Tech's growth has been driven by its ability to adapt to changing client needs and industry trends. The company has invested in cutting-edge technologies and advancements to provide innovative solutions across various sectors.

It has also actively pursued sustainability initiatives, aligning its operations with environmental and social responsibilities. As of the latest available information, Tetra Tech continues to operate on a global scale, providing its expertise and services to clients around the world. The company remains committed to delivering sustainable solutions and driving positive change through its projects and operations