What types of materials are typically prohibited for use in potable water pipes?

The use of lead and galvanized steel pipes in potable water systems is generally prohibited due to health and safety concerns. Lead is known to leach into drinking water, posing significant health risks, particularly to young children and pregnant women. This has resulted in strict regulations to eliminate lead from plumbing materials in order to protect public health.

Galvanized steel, while historically used, can corrode over time, leading to rust and sediment accumulation in water lines. This corrosion can affect water quality and may also lead to the release of harmful substances. Regulations aim to provide safe and clean drinking water, and as a result, these materials are not suitable for use in systems designed for potable water.

In contrast, materials such as plastic, PVC, copper, brass, stainless steel, and aluminum are generally considered acceptable for use in potable water systems when they meet the appropriate standards, as they do not pose similar health risks and can provide reliable performance.