AMERICAN WATER WORKS COMPANY, INC. Subsidiaries
Every subsidiary the company listed in Exhibit 21 of its annual reports, newest list first (17 lists). Names and jurisdictions are as filed.
- 2026-02-18: Subsidiary Entity Name; Jurisdiction Jurisdiction of Organization.
- 2026-02-18: Subsidiary Alpha Merger Sub, Inc.; Jurisdiction Pennsylvania.
- 2026-02-18: Subsidiary American Lake Water Company; Jurisdiction Illinois.
- 2026-02-18: Subsidiary American Water (USA), LLC; Jurisdiction Delaware.
| Annual report filed | Subsidiary | Jurisdiction |
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| 2026-02-18 | Entity Name | Jurisdiction of Organization |
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| 2026-02-18 | Alpha Merger Sub, Inc. | Pennsylvania |
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| 2026-02-18 | American Lake Water Company | Illinois |
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| 2026-02-18 | American Water (USA), LLC | Delaware |
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| 2026-02-18 | American Water Canada Corp. | Ontario |
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| 2026-02-18 | American Water Capital Corp. | Delaware |
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| 2026-02-18 | American Water Enterprises Holding, LLC | Delaware |
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| 2026-02-18 | American Water Enterprises, LLC | Delaware |
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| 2026-02-18 | American Water Defense Services, LLC | Delaware |
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| 2026-02-18 | American Water Federal Services, LLC | Delaware |
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| 2026-02-18 | American Water Military Services, LLC | Delaware |
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| 2026-02-18 | American Water Operations and Maintenance, LLC | Texas |
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| 2026-02-18 | American Water Real Property Holdings LLC | Delaware |
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| 2026-02-18 | American Water Services CDM, Inc. | Washington |
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| 2026-02-18 | American Water Works Service Company, Inc. | Delaware |
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| 2026-02-18 | AW Insurance LLC | Delaware |
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| 2026-02-18 | AWIP Holdings LLC | Delaware |
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| 2026-02-18 | AW Technologies, LLC | Delaware |
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| 2026-02-18 | Bluefield Valley Water Works Company | Virginia |
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| 2026-02-18 | California-American Water Company | California |
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| 2026-02-18 | Edison Water Company | New Jersey |
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| 2026-02-18 | Environmental Management, LLC | Missouri |
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| 2026-02-18 | E’town Services L.L.C. | New Jersey |
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| 2026-02-18 | GCW Acquisition Company LLC | New Jersey |
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| 2026-02-18 | Hawaii-American Water Company | Nevada |
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| 2026-02-18 | Illinois-American Water Company | Illinois |
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| 2026-02-18 | Indiana-American Water Company, Inc. | Indiana |
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| 2026-02-18 | Iowa-American Water Company | Delaware |
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| 2026-02-18 | Kentucky-American Water Company | Kentucky |
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| 2026-02-18 | Laurel Oak Properties Corporation | Delaware |
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| 2026-02-18 | Liberty Water Company | New Jersey |
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| 2026-02-18 | Maryland-American Water Company | Maryland |
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| 2026-02-18 | Missouri-American Water Company | Missouri |
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| 2026-02-18 | New Jersey-American Water Company, Inc. | New Jersey |
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| 2026-02-18 | One Water Street LLC | New Jersey |
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| 2026-02-18 | Pennsylvania-American Water Company | Pennsylvania |
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| 2026-02-18 | Tennessee-American Water Company | Tennessee |
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| 2026-02-18 | TWH LLC | Delaware |
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| 2026-02-18 | Virginia-American Water Company | Virginia |
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| 2026-02-18 | West Virginia-American Water Company | West Virginia |
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