A well-designed plan is essential for a trouble-free home plumbing system: Plumbing works on the simple concept of “water in -- water out.”

In a new home, the plumbing system features three main components, the water supply system, the drainage system and the appliance/fixture set. In most communities, in order to install plumbing, you must be a licensed plumber or you must work under a licensed plumber who approves and oversees your work. Local codes determine standard plumbing procedures, but a new home’s fixture placement, pipe routing diagram and pipe size depends on the home’s individual layout. There are also a few important things you need to know in up-front in the plumbing system:Installation Timetable, Plumbing Fixtures, Water Supply System, Drainage Pipes, Vent Pipes, and Traps.