Who is responsible for internal plumbing work?

The Plumbers Licensing Board (PLB) regulates WA's plumbing industry by issuing licenses to suitably qualified and experienced plumbing contractors and their tradespersons to ensure compliance and workmanship standards for plumbing work. As of 1 July 2016, the PLB is also responsible for administering drainage plumbing diagrams (‘flimsies’) in WA. Licensed plumbing contractors are responsible for submitting diagrams to the PLB along with a Certificate of Compliance when they perform any plumbing work involving the installation, alteration or extension of drainage plumbing. For further information please visit www.commerce.wa.gov.au/dpd.