The 2006 Virginia Plumbing Code was made effective May 1st, 2008, and is a fully integrated custom code that has been based on the 2006 International Plumbing Code. The International Plumbing Code provides comprehensive minimum regulations for plumbing facilities and provides for the acceptance of new and innovative products, materials and systems. Many new provisions and standards have been added or revised to reflect Code sections specific to the State of Virginia.