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M. Susan Hardwick

Director

Headshot of Susan Hardwick

M. Susan Hardwick has been a Director of Tetra Tech since 2025.

Ms. Hardwick joined our Board in December 2025. She served as the Chief Executive Officer of American Water from 2022 to 2024 and Chief Financial Officer from 2019 to 2022. She previously served at Vectren Corporation as Chief Financial Officer from 2014 to 2019, Senior Vice President, Finance from 2013 to 2014, and Controller from 2000 to 2013. Prior to joining Vectren, Ms. Hardwick was Assistant Corporate Controller at Cinergy Corp. from 1992 to 1999. She began her career in public accounting with Arthur Andersen. Ms. Hardwick currently serves on the board of New Jersey Resources Corporation, a public energy services company. She is a Certified Public Accountant and holds a B.S. in Accounting from Indiana University, Bloomington.

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