Company: AWK
Filing Date: 2025-12-17
Form Type: S-4
Source: 0001193125-25-321389
Chunk: 423

Company: American Water Works Company, Inc.
Filing Date: 2025-12-17
Form: S-4
Chunk 423
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 001-34028, 
 filed February 23, 2024)                                                                                                                                                                  |

II-4

| Exhibit 
 No.     |     | Description                                                                                                                                                                               |
| 4.24    |     | Officers’ Certificate, dated February                                                                                                                                                     
 23, 2024, establishing the 5.450% Senior Notes due 2054 (incorporated by reference to Exhibit 4.2 to American Water Works Company, Inc.’s Current Report on Form 8-K, File No. 001-34028, 
 filed February 23, 2024)                                                                                                                                                                  |
| 5.1*    |     | Opinion of Skadden, Arps, Slate, Meagher & Flom LLP regarding legality of securities being registered                                                                                     |
| 8.1**   |     | Opinion of Gibson, Dunn & Crutcher LLP regarding certain tax matters                                                                                                                      |
| 23.1*   |     | Consent of Skadden, Arps, Slate, Meagher & Flom LLP (included in Exhibit 5.1)                                                                                                             |
| 23.2**  |     | Consent of Gibson, Dunn & Crutcher LLP (included in Exhibit 8.1)                                                                                                                          |
| 23.3*   |     | Consent of PricewaterhouseCoopers LLP, Independent Registered Public Accounting Firm for American Water Works Company, Inc.                                                               |
| 23.4*   |     | Consent of PricewaterhouseCoopers LLP, Independent Registered Public Accounting Firm for Essential Utilities, Inc.                                                                        |
| 24.1*   |     | Power of Attorney (included on the signature page of this registration statement)                                                                                                         |
| 99.1*   |     | Consent of BofA Securities, Inc.                                                                                                                                                          |
| 99.2*   |     | Consent of Moelis & Company LLC                                                                                                                                                           |
| 99.3**  |     | Form of Proxy Card for Special Meeting of American Water Works Company, Inc.                                                                                                              |
| 99.4**  |     | Form of Proxy Card for Special Meeting of Essential Utilities, Inc.                                                                                                                       |
| 107*    |     | Filing Fee Table                                                                                                                                                                          |

| * | Filed herewith. |

| ** | To be filed by amendment. |

| † | Certain schedules to this agreement have been omitted as permitted by rules or regulations of the SEC. American 
 Water will furnish the omitted schedules to