Tetra Tech Awarded £60 Million Water Asset Management Contract

Tetra Tech, Inc. (NASDAQ: TTEK), a leading provider of high-end consulting and engineering services, announced today that Scottish Water, Scotland’s publicly owned water utility, awarded Tetra Tech a £60 million, single-award contract to provide comprehensive asset management services.

Scottish Water delivers water and wastewater services across Scotland through 60,000 miles of pipes and more than 2,000 treatment works. Under this eight-year contract, Tetra Tech will inspect, analyze, and report on the condition of more than 2,500 assets annually, with a focus on the development of digital solutions to optimize the collection and analysis of data. This will enable Scottish Water to better understand rates of deterioration and help prioritize future maintenance and investment decisions for their water utility assets.

"Tetra Tech has used our Leading with Science^® approach to support Scottish Water with technical and operational support, and critical infrastructure design services for more than 20 years," said Dan Batrack, Tetra Tech Chairman and CEO. “Through our RPS operations in the United Kingdom, we look forward to incorporating the latest technologies to help Scottish Water make rapid and informed decisions to optimize and sustain their infrastructure assets.”

About Tetra Tech

Tetra Tech is a leading provider of high-end consulting and engineering services for projects worldwide. With 27,000 associates working together, Tetra Tech provides clear solutions to complex problems in water, environment, sustainable infrastructure, renewable energy, and international development. We are Leading with Science^® to provide sustainable and resilient solutions for our clients. For more information about Tetra Tech, please visit tetratech.com or follow us on LinkedIn, Twitter, and Facebook.

Any statements made in this release that are not based on historical fact are forward-looking statements. Any forward-looking statements made in this release represent management’s best judgment as to what may occur in the future. However, Tetra Tech’s actual outcome and results are not guaranteed and are subject to certain risks, uncertainties and assumptions ("Future Factors"), and may differ materially from what is expressed. For a description of Future Factors that could cause actual results to differ materially from such forward-looking statements, see the discussion under the section "Risk Factors" included in the Company’s Form 10-K and Form 10-Q filings with the Securities and Exchange Commission.

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