What material is NOT accepted for drinking water supply lines?

Lead is not accepted for drinking water supply lines due to its toxicity and potential health risks. When lead is used in plumbing, it can leach into the water supply, posing serious health hazards, particularly for young children and pregnant women. Prolonged exposure to lead can lead to developmental issues, cognitive impairments, and other severe health problems.

In contrast, materials like copper, polyethylene, and galvanized iron are widely used in drinking water systems and are considered safer alternatives. Copper has antimicrobial properties and is durable, polyethylene is resistant to corrosion and is lightweight, and galvanized iron has been used historically, though it may not be as preferred in modern installations due to the potential for rust and corrosion over time. Understanding the properties and safety implications of different materials helps ensure that drinking water supplies remain safe and uncontaminated.