The health and safety of a home is influenced by many factors. Chemical contaminants such as lead or asbestos could have been used in building materials to construct and maintain the house. Health hazards can be caused by a resident's behavior, such as improperly using pesticides or not fixing a moisture and mold problem. A home's immediate surroundings can influence things such as air and drinking water quality. The following are some home contaminants that can affect a person's health.