Serving Northern Virgina / Washington DC Metro Area Customers Since 1987

Community and Cluster Systems

Community and Cluster Systems have gained recognition as a viable solution as small cities, towns and counties face complex wastewater management issues. Interest in these systems continues to grow due because they provide communities with high quality, cost efficient wastewater treatment, while protecting community character and reducing the urban sprawl. The decision regarding which type of system to use remains based on a site's soils, groundwater and bedrock elevation, topography, and regulatory requirements. Our engineers are experienced trained and available to help your community make the right decision and construct the right system for your needs.

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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