What We Do

Oxon Run Valley Terrace Sewer Rehabilitation Project

The purpose of this project is to rehabilitate the sewer serving the Valley Terrace housing development in Southeast, DC and rehabilitate the sewers in Oxon Run Park, referred to as the Lower and Upper Relief Sewers. The Lower Relief Sewer has experienced deterioration from both age and exposure to the Oxon Run stream which has shifted over time. Through the Oxon Run Valley Terrace Sewer Rehabilitation Project, DC Water will rehabilitate the Upper Relief Sewer, abandon a portion of the Lower Relief Sewer, and design and construct an alternative sewer alignment to serve Valley Terrace by connecting it to the Upper Relief Sewer.

Due to the Lower and Upper Relief Sewers´┐Ż locations in National Park Service (NPS) property, DC Water is working closely with the NPS to develop a design that will have minimal impact on the sensitive ecological resources of the area. An Environmental Assessment following the requirements of the National Environmental Policy Act (NEPA) may be required on this project.

Download a more detailed project information sheet on the Oxon Run Sewer Rehabilitation Project (PDF 495 kb) .

Scope of Work

Major work items include, but are not limited to:
  • Rehabilitation of Upper Relief Sewer on NPS property (sewer varies in diameter from 36 inches up to 42 inches)
  • Construction of a new sewer to serve Valley Terrace housing development
  • Removal or structural abandonment of portions of the Lower Relief Sewer, as directed by NPS
  • Restoration of public roads and infrastructure, as needed


Design of this project will be completed by December 2017. Construction will then start in March 2018 and should be done by September 2018.

What We Do