1.Sales and profit
See section →- Tetra Tech had $5.4B of revenue in fiscal 2025, up 4.7% on the year before. Over five years, revenue changed +12.7% a year on average.
- Its operating margin was 7.5%, down 2.1 pts: of every 100 in sales, about 8 is left after running the business.
- Tetra Tech made $248M of net profit in fiscal 2025. From fiscal 2016 to 2025, diluted EPS grew 14.3% a year.




