Question

Why are PVC pipes preferred over iron pipes for water supply to home and in sewer system?​

Answer 1

Because they are more durable and are rust free as compared to iron pipe

Answer 2

Cost effective- PVC pipes and fittings are cheaper than the iron ones which makes the former more preferable. ... Corrosion is one of the main reasons for replacing iron pipes with the plastic ones. When the iron pipes start rusting, the water running through it is no longer healthy. The water loses its goodness.