Company Story
1966 - Tetra Tech was founded by Dr. Henri Hodara and Dr. Nicolas Quintans as a small engineering firm in Pasadena, California.
1970 - The company went public with an initial public offering (IPO) and began trading on the NASDAQ stock exchange.
1980 - Tetra Tech expanded its services to include environmental consulting and began working on projects related to hazardous waste cleanup.
1990 - The company acquired several firms, expanding its capabilities in environmental consulting, engineering, and construction management.
2000 - Tetra Tech began providing services in the areas of homeland security, defense, and intelligence.
2004 - The company acquired several firms, expanding its capabilities in water and wastewater management, and environmental consulting.
2008 - Tetra Tech acquired RMT Inc., a leading provider of environmental and infrastructure services.
2010 - The company acquired PRO-telligent, a provider of construction and program management services.
2014 - Tetra Tech acquired WYG plc's environmental and infrastructure consulting business in the United Kingdom.
2016 - The company acquired Coffey International Limited, a leading provider of environmental and infrastructure consulting services in Australia and Asia.
2019 - Tetra Tech acquired WSP's environment and infrastructure business in the United States and Canada.