Lead is a common, naturally occurring metal found throughout the environment. Lead enters drinking water primarily as a result of corrosion or wearing away of materials in the water distribution system and household plumbing that contain lead. The most common sources of lead are lead pipes, faucets, and fixtures especially where the water has high acidity or low mineral content that corrodes pipes, and fixtures. Lead pipes are more likely to be found in older cities and homes built before 1986. The most common problem is with brass or chrome-plated brass faucets and plumbing with lead solder, are among homes without lead service lines.
Corrosion is a dissolving or wearing away of metal caused by a chemical reaction between water and your plumbing.
To protect your family, having your water tested for lead since you cannot see, taste, or smell lead dissolved in the water is the only sure way of telling whether there are harmful quantities of lead in your drinking water. There are lead water filters to help remove the lead from your water.