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Alternative Onsite Sewage System Inspection - Oakton, VA

Septic Tank Inspection Services

Property owners in Oakton, VA with alternative onsite sewage system (AOSS) are required to have their systems inspected annually by a licensed operator like SES of Warrenton. If you recently received a letter regarding compliance in Fairfax County, contact SES to schedule your inspection now.

Since 1987 our loyal clients in Northern Virginia trust SES for exceptional service and expert assistance in septic-drainfield designs, decentralized wastewater systems, stormwater management, and alternative onsite sewage systems. They expect timely, professional service and the expertise of our skilled professionals to assist with the Health Department regulatory compliance process.

SES has more licensed operators and installers than any other company in Virginia. From annual inspection and regular maintenance to repair or replacement, the experienced team at SES will provide you with the services you need to bring your AOSS into compliance with local, state and federal regulations and avoid costly fines.

Call SES today at 866-249-5630 to schedule your alternative onsite sewage system inspection in Oakton, VA, and see why we are one of the most well respected environmental services companies in Northern Virginia.

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

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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.

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  • 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

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