On the other hand, if you want to know the content of these metals in your well, you should run the water for at least three cycles of your pressure tank to ensure that fresh groundwater is collected. If you want to determine whether a treatment system is effective, you might want to sample before and after the unit and compare the results. If you have storage tanks in your home, you should determine how best to obtain a representative sample from the tank without contaminating the sample during collection. Some storage tanks have outlet taps, and others may require dipping the sample container into the stored volume of water. To analyze the amount of radon gas in your water, it is important to draw the water very gently and not create turbulence during the sampling .
Turbulence can release radon gas to the atmosphere, lowering the level found in the water.
Two small glass vials completely filled with sample, containing no air bubbles, are required.