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Carbon Water Filters

Carbon water filters are used to clean the impurities from household drinking water and improve the taste of the water. Carbon has been used to absorb chemicals for a long time. Most carbon water filters use activated carbon, which has a electro-positive charge added to it.

This eletro-positive charge acts as a magnet attracting the chemicals in the water.

Carbon water filters either have granular activated carbon or powdered block carbon. Although either is effective, many argue that powdered block carbon is more effective. There is a third type of carbon water filter called a, silver impregnated carbon filter. However, these are not highly recommended because the risk of adding silver ions to your drinking water is greater than the possible benefits of using one.

The degree to which carbon water filters will work depends on the amount of carbon in the filter and the speed in which the water travels through the filter. Obviously the more carbon in the filter, the better it will work. Plus, the slower the water flows through the filter the more impurities the carbon will be able to draw out. This is because the slower the water travels through the filter, the longer it will be exposed to the carbon.

There are two ways in which the carbon water filters work. The first is absorption. The carbon actually absorbs a lot of the impurities.  The second is through catalytic reduction, which is how activated carbon works. The positive charge present in activated carbon attracts the negatively charged ions in the water impurities. Carbon water filters can be used as stand alone filters to help eliminate a bad taste or odor in your water, or they can be used to pre-treat your water.

Carbon water filters can remove pesticides and herbicides from the water. It will also remove chlorine, benzene, radon, solvents, and some heavy metals. Carbon water filters should not be used to try to remove inorganic impurities such as salt or other minerals. Carbon water filters will not remove: copper, fluoride, mercury, nickel, sulfate, or selenium from your water. Carbon water filters also can not be used in place of a sediment filter.

It is important to replace your carbon water filter on the schedule recommended by the manufacture. Carbon water filters can maintain the enhanced flavor of the water while still allowing impurities to pass through. An aging carbon water filter also will not change the flow of the water. You will not be able to tell by the speed, smell or taste of the water if the carbon filter is no longer working to its full potential. When home carbon water filters go bad, they need to be replaced. Although there is a method called backwashing, which can be used to clean commercial sized filters, it is not recommended for home filters.

Carbon water filters vary greatly in price depending on the type and style of filter you want to buy. You can find carbon water filters that will mount onto your faucet and filter the water as it comes out for less than $100. You can buy an inline carbon water filter, which won’t be visible for around $20. Or you can buy a carbon water filter pitcher for $25 - $30. The carbon water filter pitcher you fill from your tap, and than the pitcher filters the water itself.

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