USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Portions of the Department of Transportation are currently in shutdown/furlough status due to a lapse in appropriations. Please continue to monitor this page for updates on DOT’s operating status.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Energy Transfer/Sunoco Twin Oaks Pipeline Updates

Thursday, September 11, 2025
  • PHMSA issues Warning Letter to Sunoco Pipeline, LP, reminding the operator of their obligation to cooperate with PHMSA inspectors, including providing information as required by Federal pipeline safety regulations and the Consent Agreement.

Friday, May 2, 2025

Thursday, February 13, 2025

Saturday, February 8, 2025

  • PHMSA inspectors arrive on scene to initiate an investigation into the Twin Oaks pipeline failure. As part of its investigation, PHMSA evaluates what additional actions may be necessary as it uncovers more information about the circumstances leading to the failure.  

Friday, January 31, 2025

  • Sunoco confirms a leak involving its Twin Oaks Pipeline system in Upper Makefield Township, Pennsylvania following odor complaints received from residents in the area.

Tuesday, January 21, 2025

  • PHMSA directed Sunoco Pipeline, LP to investigate a possible leak involving its Twin Oaks Pipeline after receiving notifications from the Pennsylvania Department of Environmental Protection of the discovery of kerosene in well samples in the Upper Makefield Township, Pennsylvania community.