Always use a potable water hose and attach a water pressure regulator at the spigot.
To determine if a hose is safe for potable (drinking) water, look for specific indicators and materials. First, check for a label stating the hose is “drinking water safe” or “potable water safe”. These hoses are typically made from materials like polyurethane or natural rubber, which are less likely to leach harmful chemicals compared to PVC. Green garden hoses, especially those made from PVC, often contain lead, phthalates, bromine, and antimony, which can leach into the water and pose health risks.
Hoses labeled as potable are usually white or blue, distinguishing them from standard green garden hoses. They are designed to be lead-free and free from toxic plasticizers, and many are made from UV-stabilized polyether-based polyurethane. Marine or RV drinking water hoses are also a reliable option, as they are specifically designed to be food-grade and safe for drinking water.
Even if a hose is labeled as potable, ensure the entire hose, including connectors, is lead-free, as brass fittings can still contain lead. It is also recommended to flush the hose for a few minutes before use to remove any contaminants that may have accumulated while the water was sitting in the hose.