AMERICAN WATER WORKS COMPANY, INC.

‌2025‌ ‌Annual Meeting‌
Vote by ‌May 13, 2025‌

American Water Operations

ANNUAL MEETING OF SHAREHOLDERS

TO BE HELD ON MAY 14, 2025, at 10:00 a.m. ET

www.virtualshareholdermeeting.com/AWK2025

American Water Works Company, Inc., 1 Water Street, Camden, New Jersey 08102-1658

The 2025 Annual Meeting of Shareholders of American Water Works Company, Inc. (the “Company”)

will be held virtually (and not at a physical location) on Wednesday, May 14, 2025, at 10:00 a.m., Eastern time, to consider and take action on the following:

1. election of the eight (8) director nominees named in the accompanying proxy statement, each to serve until the date of the 2026 Annual Meeting of Shareholders and until their successor has been duly elected and qualified;

2. approval, on an advisory basis, of the compensation of the Company’s named executive officers;

3. ratification of the appointment, by the Audit, Finance and Risk Committee of the board of directors, of PricewaterhouseCoopers LLP as the Company’s independent registered public accounting firm for 2025; and

4. such other business, if any, as may properly be brought before the meeting or any adjournment, continuation or postponement of the meeting.