Serving Northern Virgina / Washington DC Metro Area Customers Since 1987

Septic System Engineering Services

In 2015 SES Mid Atlantic began offering Professional Engineering Services by establishing an office in Powhatan Virginia managed by Peter M. Brooks, P.E. Peter brings more than 30 years of experience to SES in the field of water, wastewater and onsite sewage system consulting and design.

SES has had a long standing relationship with Peter and has great respect for his knowledge and reputation with clients, local governments and especially with VDH and DEQ regulators. Peter is also a Licensed Onsite Soil Evaluator and has experience with soils and landscapes make him uniquely qualified to design systems with multiple limiting conditions and apply sound engineering principles to small and large scale commercial and communal onsite sewage systems.

Peter’s experience with small and large sewage pump stations, water booster stations and design of small private and communal water well supply systems brings a new aspect to SES’s design offerings. The addition of professional design services for water and wastewater projects allows SES to fill niches for AOSEs, Licensed Operators, Licensed Installers and other professional engineering firms who do not have these specialized services in house.

SES is looking to team with other professionals across the State and find new clients in need of soil investigation and or professional design services. SES does not provide surveying, land planning or other such civil or geotechnical engineering services.

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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