Form of Proxy

AMERICAN WATER WORKS COMPANY, INC.

Notes

BD Client Code:

Client Name:

Number of Shares Held in a BD Nominee Company:

No.	Proposition		For	Against	Abstain
1	Election of Director: Jeffrey N. Edwards
2	Election of Director: John C. Griffith
3	Election of Director: Lisa A. Grow
4	Election of Director: Laurie P. Havanec
5	Election of Director: Julia L. Johnson
6	Election of Director: Patricia L. Kampling
7	Election of Director: Karl F. Kurz
8	Election of Director: Michael L. Marberry
9	Election of Director: Stuart M. McGuigan
10	Election of Director: Raffiq Nathoo
11	Approval, on an advisory basis, of the compensation of the Companys named executive officers.
12	Ratification of the appointment, by the Audit, Finance and Risk Committee of the Board of Directors, of PricewaterhouseCoopers LLP as the Companys independent registered public accounting firm for 2026.
13	Approval of amendments to, and a restatement of, the American Water Works Company, Inc. 2017 Omnibus Equity Compensation Plan.
14	Approval of amendments to, and a restatement of, the American Water Works Company, Inc. and its Designated Subsidiaries 2017 Nonqualified Employee Stock Purchase Plan.
15	Approval of an amendment to the American Water Works Company, Inc. Restated Certificate of Incorporation to provide for officer exculpation.