Tetra Tech Reports Record Third Quarter 2021 Results Revenue of $802 million, up 13% Y/Y Record Net Revenue of $638 million, up 14% Y/Y EPS $0.95, up 14% Y/Y; up 22% Y/Y on an Adjusted Basis Record Backlog of $3.25 billion, book-to-bill 1.12x PASADENA, Calif.--(BUSINESS WIRE)--Tetra Tech, Inc. (NASDAQ: TTEK), a leading provider of high-end consulting and engineering services, today announced results for the third quarter ended June 27, 2021. Third Quarter Results Revenue in the third quarter totaled $802 million, up 13% year-over-year. Tetra Tech achieved record quarterly revenue, net of subcontractor costs (net revenue) 1, of $638 million, up 14% year-over-year. EPS was $0.95 up 14% and up 22% on an adjusted basis year-over-year. Cash flow from operations was $69 million and days sales outstanding (“DSO”) declined five days year-over-year to 65 days, the lowest level in over 10 years. Backlog grew to an all-time high of $3.25 billion with increased orders for water and environmental services.