Metals in drinking water – why copper, nickel, and lead usually originate at home

Metals in drinking water are often associated with source water or treatment plants. In reality, elevated metal concentrations usually develop within household plumbing systems. Pipes, fittings, and faucets play a decisive role in shaping what reaches the tap. Copper is a common example. Widely used in plumbing, copper is generally approved for drinking water installations. […]