Public Works and Environmental Services

Fairfax County, Virginia

CONTACT INFORMATION: Our administrative offices are open Mon – Fri by phone, email, and virtual 8 a.m. - 4:30 p.m. Front-desk hours 9 a.m. – noon.

TTY 711

12000 Government Center Parkway
Suite 358, Fairfax, Va 22035

Shahram Mohsenin,
Director, Wastewater Planning & Monitoring

Wastewater Management News, Videos and Podcasts


Wastewater Management News

Public Works Ready and Resilient. National Public  Works Week May 15-21, 2022 APWA
- More than 900 employees in the Fairfax County DPWES will join over 30,000 colleagues throughout the U.S. and Canada to recognize National Public Works Week from May 15 through May 21.
Centerville Field Day 2022
- Centreville Environmental Field Day is a first-year mentorship program started in 2022. It is aimed at creating relationships between environmental professional mentors, high school students, and elementary school students. The mentors assisted Advanced Placement Environmental Science students in creating hands-on activities for elementary school students so they can learn more about the importance of environmental stewardship from their peers. This program’s focus on mentorship has supported the next generation to be impassioned with protecting the environment and maybe even joining the environmental field workforce.
Photo: UV Plant 1
- FAIRFAX COUNTY, Va. – A new process designed to disinfect treated wastewater using ultraviolet lights (UV) is now operating at the Noman M. Cole, Jr. Pollution Control Plant in Lorton. The UV process will replace the existing chemical (sodium hypochlorite) disinfection system. The project resulted in the first Institute for Sustainable Infrastructure Envision Gold Award achieved by Fairfax County. The county currently leads the state in Envision awards.

Flushed! The Journey of Wastewater

Wastewater Management (WWM) does more than just clean dirty water. Employees from all WWM divisions work toward pollution prevention and continuous improvement focused on maintaining our wastewater infrastructure, a critical asset to Fairfax County, and protecting human health and the environment. This video series highlights some of the programs and systems where dedicated wastewater employees work to enhance the quality of life for those that live, work or visit Fairfax County.

Fairfax County’s Environmental Monitoring Laboratory tests wastewater that flows to and from the Noman M. Cole Jr., Pollution Control Plant. In this segment of our Flushed! The Journey of Wastewater series, learn how our laboratory professionals use state-of-the-art equipment to help ensure permit compliance, support county stormwater initiatives, and protect the local environment.

More videos will be added throughout the year.

Wastewater Management Videos

Learn about the environment in Fairfax County. Listen to EnviroPod.


Mitigating Sewer Odors in Holmes Run Stream Valley ~ La Voz del Condado de Fairfax (Nov. 12, 2019) - español

Juan ReyesFairfax County's weekly Spanish radio program, "La Voz del Condado de Fairfax," originally broadcast on WUST Radio (1120 AM) on Tuesday, Nov. 12, 2019. This week's show features Juan Reyes, assistant director with the Fairfax County Department of Public Works and Environmental Services, discussing mitigating sewer odors in Holmes Run Stream Valley with host Heber Velasquez.

Fairfax Virtual Assistant