Plumbing is one of the oldest trades in the world. Plumbers are skilled technicians who fix plumbing problems in buildings and homes. Unfortunately, plumbing is an archaic trade that's becoming less relevant due to technological advancements. Plumbing is also becoming more complicated due to increased safety regulations and standards. This means that more people are needed to handle plumbing jobs. Plumbing jobs are hard to find and pay well, which is why many people prefer to buy their plumbing supplies online.