What is considered a major source of lead exposure in homes?

Dust from leaded paint is considered a major source of lead exposure in homes primarily because lead-based paint was widely used in residential properties before it was banned for residential use in 1978 in the United States. When this paint deteriorates, it can create dust and chips that settle on surfaces, be inadvertently ingested or inhaled, and pose significant health risks, especially to young children whose developing bodies and brains are particularly vulnerable to lead poisoning.

Lead dust can accumulate in homes where lead-based paint is present, particularly in older buildings. This dust can be found in areas that are frequently touched, such as windowsills, doorframes, and floors, and it can easily be disturbed by activities such as cleaning, moving furniture, or repairs, resulting in lead particles becoming airborne or settling on surfaces within the home. The risk is compounded by the fact that small children are more likely to put their hands or objects in their mouths, increasing the likelihood of lead exposure.

In contrast, while indoor plants, household appliances, and tap water from modern plumbing can pose some risks, they do not present the same level of widespread and established danger when it comes to lead exposure as dust from deteriorating lead-based paint does. Indoor plants typically do not absorb significant amounts of