Serving Northern Virgina / Washington DC Metro Area Customers Since 1987

Installation & Construction

Now that your soil study is complete, your design is done, your permit is issued it's time to install it. Why let anyone other than SES handle this important task?

We know you, we know your lot and we know installation. Our installation crews and foremen are some of the most experienced in the State and are properly licensed for alternative and conventional systems. Our design build process ensures you won't get lost in the process with required construction inspections, health department certificates or operations permits. SES handles all of these things and gives you an operations permit for your system two weeks before your scheduled closing. We guarantee it or your first year of O&M is free.

Visit our YouTube Channel

SES Company


  • Virginia Onsite Wastewater Recycling Association
  • National Onsite Wastewater Recycling Association
  • Water Environment Federation
  • Virginia Association of Counties
  • Northern Virginia Building Industry Association
  • Design Build Institute of America
  • Better Business Bureau
  • Dulles Area Realtors Association
  • Prince William Regional Chamber of Commerce

Learn More

Responsible Management Entity

SES is one of only three businesses to be licensed as a Responsible Management Entity. Loudoun County Virginia was the first in the Nation to establish requirements for an RME based on EPA recommendations. SES manages several communities required to have an RME.

Learn More


  • Licensed Conventional & Alternative Onsite Soil Evaluators (AOSE)
  • Licensed Conventional and Alternative Onsite Sewage System Operators
  • Licensed Conventional and Alternative Onsite Sewage System Installers
  • NSF Certified Septic System Inspectors
  • Virginia Class A Contractors License
  • Environmental, Monitoring Well and SDS Endorsements
  • Licensed Sewage Handler
  • Licensed Wastewater Treatment Plant Operators
  • Licensed Water System Operators

Learn More