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Homeowner Requirements
Regulations for Alternative Onsite Sewage Systems
The Virginia Department of Health issued Regulations for Alternative Onsite Sewage Systems 12VAC5-613-10 et.seq. on December 7, 2011. These regulations establish operation and maintenance requirements for all, existing and future, alternative on-site sewage systems (AOSS). Part three of the regulations identifies the operation and maintenance requirements and sets forth homeowner responsibilities, which are as follows: 
  • Have the AOSS operated and maintained by an operator;
    • AOSS operators are licensed by the Department of Professional and Occupational Regulation (DPOR). To Search: place an asterisk in the “name field”, check “operators” under Onsite Sewage System Professionals, then click “search”. This will provide a list of all licensed operators, their license number, and location.
  • Have an operator visit the AOSS at the frequency required by this chapter;
  • Have an operator collect any samples required by this chapter;
  • Keep a copy of the log provided by the operator on the property where the AOSS is located in electronic or hard copy form, make the log available to the department upon request, and make a reasonable effort to transfer the log to any future owner;
  • Follow the O&M manual and keep a copy of the O&M manual in electronic or hard copy form for the AOSS on the property where the AOSS is located, make the O&M manual available to the department upon request, and make a reasonable effort to transfer the O&M manual to any future owner; and
  • Comply with the onsite sewage system requirements contained in local ordinances adopted pursuant to the Chesapeake Bay Preservation Act (§ 10.1-2100 et seq. of the Code of Virginia) and the Chesapeake Bay Preservation Area Designation and Management Regulations (9VAC10-20) when an AOSS is located within a Chesapeake Bay Preservation Area.

Additional Requirements
Please note that these requirements are in addition to the Loudoun County requirements for alternative on-site sewage systems contained in the Loudoun County Codified Ordinances: Chapter 1067, which was revised in April 2013.  Also, individual operators and manufacturers may have their own requirements for AOSS.

Contact Information
Questions should be directed to the Loudoun County Health Department at 703-777-0234.


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