PVC

PVC is an acronym that stands for polyvinyl chloride. Of the different types of plastic pipe used for water supply, PVC pipe has a wide variety of plumbing uses but is mostly used for drainage PVC is rarely used in potable water applications, and in many jurisdictions it is not considered safe for drinking. PVC is also very common in pool and spa systems. PVC pipe is often white but it can also come in other colors. You can often tell what it is used for by the colors and marks on the pipe. For example, purple pipe with black lettering is sometimes used for reclaimed water. PVC also comes in a variety of thicknesses, called schedules. Schedules 40 is common for pipes used in water distribution.

PVC connections are made by using a primer that softens the PVC and then applying PVC glue that melts the joints and pipe together. CPVC pipe should always be clearly labeled if used for potable (drinkable) water. In commercial applications, all piping systems are labeled.