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Private company

Washington Savannah River Company LLC

Defunct US environmental business

Washington Savannah River Company LLC was an environmental remediation company that operated the Savannah River Site, Aiken, South Carolina until 2009.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1989Founded1
  • Industryenvironmental remediation1
  • HeadquartersSavannah River Site1

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Washington Savannah River Company LLC was an environmental remediation company that operated the Savannah River Site, Aiken, South Carolina until 2009.2

Corporate structure

Washington Savannah River Company LLC is part of a group headed by Amentum Holdings, Inc.. 175 entities, 28 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Amentum Holdings, Inc. Chantilly, Virginia
    • Washington Savannah River Company LLC Savannah River Site
    • AC First, LLC Subsidiary · Delaware, United States
    • Aeroptic, LLC Subsidiary · Massachusetts, United States
    • Aerospace Testing Alliance Subsidiary · Tennessee, United States
    • Afghan Holdco LLC Subsidiary · Delaware, United States
    • Africa Expeditionary Services LLC Subsidiary · Delaware, United States
    • AGS Sudan Limited Subsidiary · South Sudan
    • Airport & MRO Facilities Nigeria Limited Subsidiary · Nigeria
    • Amazon Finance LLC Subsidiary · Delaware, United States
    • Amentum (UK) Ltd. Subsidiary · United Kingdom
    • Amentum Australia Pty Limited Subsidiary · Australia
    • Amentum Business Support Services Inc. Subsidiary · Philippines
    • Amentum Clean Energy France SAS (U.K.) Subsidiary · France
    • Amentum Clean Energy International Limited Subsidiary · United Kingdom
    • Amentum Clean Energy Limited Subsidiary · United Kingdom
    • Amentum Clean Energy s.r.o Subsidiary · Czechia
    • Amentum Commercial Operations, Inc. Subsidiary · Delaware, United States
    • Amentum Digital Infrastructure, Inc. Subsidiary · New Jersey, United States
    • Amentum E&C Limited Subsidiary · United Kingdom
    • Amentum Enterprise Asset Solutions Construction Limited Subsidiary · United Kingdom
    • Amentum Enterprise Asset Solutions Limited Subsidiary · United Kingdom
    • Amentum Environment & Energy, Inc. Subsidiary · Ohio, United States
    • Amentum Facility Management UK Ltd. Subsidiary · United Kingdom
    • Amentum Global Services - Australia Pty Ltd Subsidiary · Australia
    • Amentum GmbH Subsidiary · Germany
    • and 149 more

Built from subsidiaries listed in Exhibit 21 of annual reports filed with the SEC; major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

Timeline

  1. 1989Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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  2. 2