Which type of pipe is not affected by corrosive water?

PVC, or Polyvinyl Chloride, is a type of plastic pipe that is commonly used in water distribution systems and other applications due to its resistance to corrosion. Unlike metals, PVC is not affected by the corrosive properties of water or soil typically found in various environments. This resistance makes PVC an ideal material for plumbing, drainage, and irrigation systems, ensuring longevity and reducing maintenance concerns associated with corrosion.

In contrast, materials like cast iron, steel, and copper can suffer from corrosion when exposed to aggressive water conditions or certain soil types. For example, cast iron is prone to rust, resulting in structural weaknesses over time when it comes into contact with moist environments. Steel can also corrode due to rust formation, and while it can be treated with coatings to minimize this effect, it remains susceptible to corrosion in the right conditions. Copper, while relatively resistant to corrosion compared to iron and steel, can still experience issues such as pitting corrosion in certain water conditions.

Thus, PVC stands out as a corrosion-resistant option, making it suitable for use in various water systems where corrosive elements may be present.