Public Works and Environmental Services

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Carey Needham
Director, Capital Facilities

Covanta Force Main Replacement

Project Number: WW-000001-034

Project Update: May 7, 2024

The project's current phase is anticipated to be finished by August 2024.

Project Background

After reviewing the force main near Covanta Pump Station in Lorton, Virginia, it was determined the existing DIP force main was eroding from the inside out due to the increase in acidity levels from the landfill leachates and increased abrasion from the Covanta Energy/Resource Recovery Facility cooling water towers that were conveyed in the existing force main.

Project Description

The work to be completed for the Covanta Force Main Replacement project consists of replacing approximately 2,600 LF of the existing 8” Ductile Iron Pipe (DIP) force main with 8” HDPE from the Covanta Pump Station valve vault to the Lorton Road’s Right-of-Way (ROW). Then, it will encompass replacing approximately 4,100 LF of 8” DIP with 8” of HDPE from the intersection of Lorton Road to the terminal manhole of the existing force main.

Project Location

Adress: 9898 Furnace Rd Lorton, VA 22079 (Covanta Energy Plant)

Map - Covanta Pump StationBlue square is the Covanta Pump Station. Orange Box encompasses Phase One. Green Box encompasses Phase Two. Red broken line in the rectangular boxes is the alignment of the Force Main.

Project Phase

This project has completed the Design Phase and is now in the bidding phase. The construction phase will begin in Summer 2024. Phase 2 is still in 75% Design.

Project Benefits

The benefits of the project are:

  • Prevent costly future emergency repairs.
  • Reduce risks to public health and the environment.


Estimated Finish for Phase 1 August 2024
Estimated Finish for Phase 2 TBD

What to Expect

The project will be awarded to William A. Hazel for Linear Construction once the design phase is completed. All work will be inspected and supervised by Fairfax County to ensure quality. Every effort will be made to minimize disturbances and impacts to public and private areas. A portion of the road leading to the Covanta Energy Plant will be one lane and have construction workers directing flow. Careful consideration will be given to scheduling construction activities to minimize disruption in the community. There will be no disruption to the existing sanitary sewer service.

Project Cost and Funding Source

The construction cost of the project is approximately $2.6 million. Wastewater construction projects are funded through the County’s Capital Improvement Program.


For more information, please email Matthew Doyle, Project Manager, Fairfax County Wastewater Collection Division at

Frequently Asked Questions

No, the force main replacement will not affect any resident’s sanitary services during construction.

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