Serving Northern Virgina / Washington DC Metro Area Customers Since 1987

We Can Help!

Complete the form below to schedule an Alternative Onsite Sewage System Inspection

First Name:
Last Name:

Alternative Onsite Sewage System Inspection - Great Falls, VA

Septic Tank Inspection Services

If you need an Alternative Onsite Sewage System (AOSS) inspection at your property in Great Falls, VA, or you have recently received a letter regarding inspection compliance for your AOSS in Fairfax County, the professionals at SES in Warrenton can schedule your inspection today.

Our clients trust SES to provide dependable service and expert assistance navigating the health department approval process for alternative onsite sewage systems. We serve our clients, including property owners, realtors, builders, developers, land planners, and governmental agencies with precision environmental investigations, septic-drainfield design, decentralized wastewater systems and stormwater management services. No matter your need, the skilled professionals at SES will provide you with the inspection and support you need to meet local, state, and federal regulations to bring your Fairfax County AOSS into compliance.

Call 866-249-5630 today to schedule your Alternative Onsite Sewage System inspection and leave your compliance worries in Great Falls, VA in the dependable hands of SES.

Do you have property with one or more of the following limitations or needs? No problem for SES!

  • Limited Area
  • Steep slopes
  • Shallow, rocky, clayey, wet or sandy soils
  • High groundwater
  • Sites where the current system has failed
  • Coastal Areas where nutrient removal is required
  • Commercial Properties like Restaurants & Schools
  • Subdivision and Communal Systems

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