What type of pipes are commonly used in water distribution systems?

Ductile iron and PVC pipes are commonly used in water distribution systems due to their durability, versatility, and resistance to corrosion. Ductile iron pipes are strong and can withstand high pressures, making them suitable for underground distribution systems. They also have a good resistance to impact and can be used in various soil conditions.

PVC (polyvinyl chloride) pipes are lightweight and easy to install, making them a popular choice for many modern water distribution applications. They are resistant to chemicals and do not corrode, which enhances their longevity and reliability for transporting clean drinking water. The combination of ductile iron's strength and PVC's lightweight properties allows for effective management of water distribution, making these materials well-suited for the demands placed on water systems.

Other materials, though used in specific circumstances, may not offer the same benefits as ductile iron and PVC in terms of overall performance and adaptability in diverse environments.