What is the most commonly used material for potable water systems?

The most commonly used material for potable water systems is polyethylene. Polyethylene is favored in various applications for its durability, flexibility, and resistance to corrosion. It is also lightweight, making it easier to handle and install. Additionally, polyethylene does not leach harmful substances into the water, ensuring that the water remains safe for consumption.

Polyethylene comes in different grades and can be utilized in various sizes and configurations, making it versatile for different plumbing designs in marine applications. This characteristic is especially important in boating, where space is often limited and the ability to bend or fit pipes into tight areas without the need for additional fittings can simplify the installation process.

While other materials like copper are also used for potable water systems, they may not offer the same level of flexibility or corrosion resistance as polyethylene. Copper is more rigid and can be subject to oxidation. PVC, on the other hand, is generally not recommended for water that is intended for drinking due to concerns about chemical leaching, and polypropylene, while utilized in some plumbing systems, is less common than polyethylene for this specific purpose. Thus, polyethylene stands out as the most practical and widely used choice for potable water systems.