What materials are not recommended for use in drinking water distribution due to corrosion concerns?

Lead and certain types of galvanized steel are not recommended materials for use in drinking water distribution due to their susceptibility to corrosion and the potential health risks they pose. Lead is a toxic metal that can leach into drinking water, particularly when the water is acidic or when the plumbing system is old. Prolonged exposure to lead can lead to serious health issues, especially in children, including developmental problems and neurological damage.

Galvanized steel can also be problematic as it is coated with zinc to prevent corrosion; however, over time, the coating can wear off, leading to rusting and the release of iron and other contaminants into the water supply. As such, the use of lead pipes and certain types of galvanized steel is discouraged to ensure that the drinking water remains safe for consumption and free from harmful substances.

In contrast, materials like plastic, rubber, fiberglass, stainless steel, and aluminum are generally considered safer and more resistant to corrosion, making them acceptable options for drinking water distribution systems.