Introduction to Radon & Health Risk
The Fundamentals of Radon & Radioactivity
Radon Occurrence & Behavior
Radon Measurement & Devices
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Transport Mechanism #1 – Aquifer & Well Water

Radon dissolved in groundwater is released when the water is exposed to air. In the case of a drilled well, the water drawn has very little access to air; consequently, any radon in this water will remain there until it decays or has the opportunity to be released in air. Radon is released into the house air when occupants shower or wash dishes and clothes, for example. Since the volume of water used by an average household each day is small compared to the volume of air in a house, it takes very high concentrations of radon in water to produce an airborne radon problem.