About Lead
Lead is a naturally occurring metal that was used in many products, before it was severely restricted in late 1970s.
Lead is harmful to the human body, with no known safe level. Small amounts of lead can build up in the body and cause lifelong learning and behavior problems. Buildup of lead in the body is referred to as lead poisoning, and is the most common environmental illness in California children.
If your home or apartment building was built before 1978, chances are that the old paint contains lead. You need to take special precautions if you are repairing or remodeling your home, because exposure to lead-based paint, lead dust, or paint chips is a health hazard.