Adams recommends testing a home's water system. If the water has high levels of lead, she suggests letting water run for several minutes before using it. Because lead threats are rarely noticed until levels are very high, Adams recommends an aggressive prevention program. Children should be given a blood test for lead, which is just a simple finger prick, at 12 months and at 24 months. Homeowners also can wash surfaces frequently with a solution of water and tri-sodium phosphate or powdered dishwashing detergent.
Homeowners can test for surface lead levels by removing a sample for laboratory testing.
Professionals also can use X-ray fluorescence, which does not disturb the paint surface. When Remodeling Your Home.