In many job disciplines, the word “master” is applied to indicate a superior level of advanced knowledge, a proven track record of experience and success as well as the addition of a wider range of skills. This also applies to those in the plumbing industry. Individuals who achieve the status of master plumber are licensed and have extended the level of their licensing through their state’s most stringent license testing. These masters also possess management experience that is transferable to large plumbing projects for municipalities, new construction and often are called upon as trainers for many vocational schools and colleges where plumbing courses are offered. Masters are also called upon to verify plumbing designs and act as professional advisors should a legal difficulty arise.