This updated version of the 2006 Virginia Plumbing Code is a fully integrated custom code based on the 2006 International Plumbing Code, and was made effective on May 1st, 2008. Covering minimum regulations for plumbing facilities, including the design, installation, and inspection of private sewage disposal systems, the information in the 2006 Virginia Plumbing Code is customized to reflect the specific standards and regulations in the State of Virginia.