What We Do

Potomac Interceptor Odor Abatement

The Potomac Interceptor is a 50-mile-long gravity sewer system that transports wastewater to the Blue Plains Advanced Wastewater Treatment Plant (more information in the "Who We are" section of this site) located in Washington, DC The Potomac Interceptor is owned and operated by DC Water though several suburban jurisdictions add their wastewater to the system.

The Potomac Interceptor sewer has a number of structures along the 50 mile route to Blue Plains to allow sewage to flow efficiently. However, during certain times of the year they can become the source of odor. If you have an odor complaint or issue with the Potomac Interceptor please call our 24 hour Emergency Command Center at (202) 612-3400 or during normal business hours you can contact the Potomac Interceptor Manager on (202) 612-3460.

In 1999 DC Water began design and planning for a long term odor abatement program.

The objectives of the long term odor abatement program are:

  • To provide long-term control of odors from the Potomac Interceptor using practical and reliable state of the art technology.
  • To reduce hydrogen sulfide gases in the Potomac Interceptor that cause the corrosion of the concrete sewer pipe.

Download a recent community presentation on the Potomac Interceptor and Operation Clean Air (PDF 5.7 mb) .

More detailed information on the Potomac Interceptor is available in the "Wastewater Treatment" section of this site.

Potomac Interceptor Easement

Potomac Interceptor Easment

Jurisdictions served by the Potomac Interceptor

  • Loudoun County (VA)
  • Fairfax County (VA)
  • Washington Dulles International Airport
  • Washington Suburban Sanitary Commission (WSSC)

The Potomac Interceptor conveys wastewater from Dulles International Airport in Chantilly, VA along the Potomac River to the DC border. At the DC/Montgomery County, MD border, the Potomac Interceptor becomes the Upper Potomac Interceptor Relief Sewer, and continues to the Potomac Pumping Station in Washington, DC

Odor Abatement Facilities Location and Photographs

Individual Potomac Interceptor Facilities are presented in the link below.

What We Do