A home water distiller will remove impurities from contaminated water and separate pure water from the bad chemicals through a process of distillation. The purified water will then separate and condensed into a storage tank, cooled down and ready to drink.

A distiller heats the contaminated water in the unit compartment until it reaches the boiling point. The distillation device come as either a counter-top or a stand-alone unit, or as an inline under counter unit.  Water is heated to a boiling point in a closed chamber and then vaporized.  The vapor is collected in another chamber where it is condensed, cooled and can then be dispensed through a faucet from the storage tank, or from a pitcher.

Contaminants with higher boiling points than water will remain at the bottom of the heating chamber.   Contaminants such are volatile organic compounds (VOCs) with lower boiling points than water are vaporized with the heated water.  The condensed vapor is clean refreshing water. 

The system is very effective in solving most drinking water problems, especially dissolved salts which may be difficult to remove by other water purifiers.  This water purification alternative produces almost pure water by removing microorganisms, nitrates, metals, dissolved solids, heavy metals, and unpleasant tastes and odors.  The use of distillers as the sole means of water purification will depend on a reliable power supply.

The most common home water distillation system in the market today are the PureWise brands. Mostly come as portable countertop units and they are very effective in removing up to 99% of impurities to greatly improve the flavor and appearance of foods and beverages.