Company: AWK
Filing Date: 2025-10-27
Form Type: 425
Source: 0001193125-25-250691
Chunk: 4

Company: American Water Works Company, Inc.
Filing Date: 2025-10-27
Form: 425
Chunk 4
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 Code of Ethics, Respect and Dignity in the Workplace Policy, Acceptable Technology Use Policy,     
 and Violence Free Workplace Policy to help ensure social media activity meets the company’s expectations and values. |

27. Where can I learn more about the merger?

| • |     | For more information about the merger, please visit AmericanWaterEssentialUtilitiesMerger.com. |

| • |     | Employees can also find additional information about the merger on Mysource, our intranet. |

28. Who should I reach out to if I have additional questions?

| • |     | We are committed to transparent communication and keeping you informed as we work through this process. |

| • |     | If you have any questions about what this development means for you, please reach out to your manager or submit                       
 questions to AskAW@amwater.com. We will do our best to cover submitted questions in future communications related to the transaction. |

Cautionary Statement Regarding Forward-Looking Statements Certain statements included in this communication are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, Section 21E of the Securities Exchange Act of 1934, as amended, and the Private Securities Litigation Reform Act of 1995. In some cases, these forward-looking statements can be identified by words with prospective meanings such as “intend,” “plan,” “estimate,” “believe,” “anticipate,” “expect,” “predict,” “project,” “propose,” “assume,” “forecast,” “outlook,” “future,” “pending,” “goal,” “objective,” “potential,” “continue,” “seek to,” “may,” “can,” “will,” “should” and “could,” or the negative of such terms or other variations or similar expressions. Forward-looking statements may relate to, among other things: statements about the benefits of the proposed merger, including future financial and operating results; the parties’ respective plans, objectives, expectations and intentions; the expected timing and likelihood of completion of the merger and related transactions; the results of any strategic review; expected synergies of the proposed merger; the timing and result of various regulatory proceedings related to the proposed merger, and other general rate cases, filings for infrastructure surcharges and other governmental agency authorizations and proceedings, and filings to address regulatory lag; the combined company’s ability to execute its current and long-term business, operational, capital expenditures and growth plans and strategies; the amount, allocation and timing