Leaves in minerals such as calcium. First, the raw water enters a 1-micron prefilter cartridge to remove the fine particulate. Then, the raw water enters the distribution tube and travels through the distribution basket. These form a maze of tortuous paths through which the water flows. The water is then ready to use.
Water chemistry is different throughout the world.
This water has been run through the filter until any one of the contaminants was no longer removed in sufficient quantity to meet EPA limits. At that point, the test was stopped and the gallonage noted. That gallonage is the compliance capacity of the units. This system is also certified to the requirements of states. Shower in chlorine-free water.