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Tetra Tech provides consulting and engineering services for environmental, infrastructure and other complex challenges.
Tetra Tech provides consulting, engineering, environmental, remediation, construction management and digital services to government and commercial clients. Its work includes water management, energy, infrastructure, disaster response and building design. Founded in 1966, the company is headquartered in Pasadena, California, and operates across the Americas, Europe and the Indo-Pacific. In January 2026, it agreed to acquire Providence Consulting Group Pty Ltd; financial terms were not disclosed.
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