All the water from the house flows into the septic tank. The job of the tank is to trap the solids and let the cleaner water pass through to the drainage area.
Mold is a living organism found indoors and outdoors alike. If moisture or humidity is introduced, the living organism will destroy the material it has rooted into.
Radon is a naturally occurring radioactive gas that cannot be detected by our senses. Radon is the second leading cause of lung cancer in the United States.