Radon being soluble in water enters the underground water supply easily. All ground water has radon and some have very high concentrations. Radon that enters a home through the water supply escapes from the water when flushed, heated or sprayed in showers, dishwashers and clothes washers @aquascience.net
... Chamber of a Large Air-Conditioning System. The Filtersorb ... Air conditioners. Drinking Water. Home Appliances. Laundry Machines. Ro Membranes. Swamp Coolers ...