A normal workday for a plumber is between 8-10 hours of work time. Typically, a workweek is about 4-5 days. The workweek of a plumber is flexible because oftentimes you can choose to work four ten-hour days, leaving you with three days off a week!

The major categories of plumbing systems or subsystems are: potable cold and hot tap water supply. plumbing drainage venting. sewage systems and septic systems with or without hot water heat recycling and graywater recovery and treatment systems.

More than 1000 years ago, the Romans built water channels that carried water from the mountains into the city, which distributed it through underground supply lines made of lead. That is where the term 'Plumbing' originated, as 'Plumus' in Latin means Lead.

Plumbing work refers to the installation, repair, and maintenance of pipes, fixtures, and other systems used for water distribution and sewage disposal in buildings. It involves a variety of tasks, from simple repairs like fixing a leaky faucet, to complex projects like designing and installing a new plumbing system.