What material is commonly used for drainage system piping?

The commonly used material for drainage system piping is plastic. This choice is favored due to its lightweight nature, resistance to corrosion, and the ease with which it can be installed. Plastic pipes, particularly polyvinyl chloride (PVC) and high-density polyethylene (HDPE), are durable and can withstand the chemicals often found in wastewater. Additionally, their smooth interior surfaces help reduce friction and prevent clogging, making them an ideal choice for effective drainage.

While copper and galvanized steel can be used in some plumbing applications, they are less common for drainage systems because they are more susceptible to corrosion over time, especially when exposed to moisture and various chemicals in the wastewater. Rubber is generally not used for drainage piping; it is more suited for flexible connections or seals rather than as the main material for piping systems. Aluminum can be lightweight, but it does not provide the same level of corrosion resistance or durability as plastic in drainage applications.

Overall, plastic's advantages in both performance and longevity make it the preferred material for drainage systems.