What Are Some Common Indoor Biological Pollutants?
• Animal dander (minute scales from hair, feathers and skin) • Dust mite and cockroach parts • Fungi (molds) • Infectious agents (bacteria or viruses) • Pollen Some of these substances are in every home. It is impossible to get rid of them all. Even a spotless home may permit the growth of biological pollutants. Two conditions are essential to support growth: nutrients and moisture. These conditions can be found in many locations, such as bathrooms, damp or flooded basements, wet appliances (such as humidifiers or air conditioners), and even some carpets and furniture. Modern materials and construction techniques may reduce the amount of outside air brought into buildings which may result in high moisture levels inside. Using humidifiers, unvented heaters, and air conditioners in our homes has increased the chances of moisture forming on interior surfaces. This encourages the growth of certain biological pollutants. The Scope of the Problem Most information about sources and health eff
