If they are properly maintained, a plastic water piping system can last for several generations. Misusing or improperly maintaining a plastic piping system can cause it to prematurely deteriorate.
Plastic water pipes are the most lightweight type of pipes used in the plumbing industry. According to Builder's Websource, they are considerably lighter than pipes made of copper or steel.
A plastic water piping system will be easier to install than systems involving metal pipes and will require less skilled labor. Ease of installation lowers the ultimate cost of the initial installation project.
Plastic water pipes are quite resistant to condensation, corrosion and abrasion, making them ideal for plumbing situations. According to Savvy Cafe, they also have a high-impact strength, are non-conductive and are very flexible.
Plastic piping and joints are much cheaper than metal pipes and joints. Plumbing projects involving plastic water pipes will come with a much lower price tag than if other materials such as copper piping were used.