Plumber exiting a sewer via a manhole Years of training and/or experience are needed to become a skilled plumber; some jurisdictions also require that plumbers be licensed. Common plumbing tasks and skills include: Reading drawings and specifications, to determine the layout of water supply, waste, and venting systems Detecting faults in plumbing appliances and systems, and correctly … Source: https://en.wikipedia.org/wiki/Plumber.
