Which organization approves fittings used when joining lead to copper pipes?

• A. WRAS
• B. UL
• C. CSA
• D. ANSI

Answer: (A)

Potable water fittings must carry approvals from a recognized body to guarantee they're safe for drinking water and compatible with the materials they join. When joining lead to copper pipes, the fittings used in the installation need to be approved for use in drinking-water systems to prevent contamination and corrosion. In the UK, that approval comes from WRAS—the Water Regulations Advisory Scheme—which tests and certifies fittings to ensure they meet safety and performance standards for drinking water. Other organizations like UL, CSA, and ANSI have important roles in safety and standards, but they don’t provide the specific potable-water fittings approval required for UK installations. So, WRAS is the correct organization.