How Do Water Filters Work?

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How Do Water Filters Work?

How do water filters work? This is a common question among home owners, but it doesn’t have an easy answer. There are five basic water filtering methods employed in the design of different filters on the market. These include carbon filtration, reverse osmosis, ion exchange, and equipment such as sediment filter treatment systems. The right method for you depends on your water supply and possible contaminants. Knowing the type you need helps answer the question how these filters work?

Chlorine RemovalFaucet Mounted Water Filter

The most common water treatment equipment found in most homes work by removing chlorine. Chlorine is effective for removing bacteria, but can react badly with metals or other substances in the water. This reaction can cause illness and be hazardous to your health. A carbon filter is the best for filtering out chlorine and is one of the most inexpensive treatments.

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The charcoal in these filters absorbs the chlorine and other impurities. You can use under sink or counter top water filters for your kitchen or have a whole house model installed to treat every outlet and the shower. Other disinfectant methods that work include equipment such as pasteurization and ultra violet radiation systems.

Sediment RemovalCountertop Water Filter

A sediment filter is often used to treat homes with excessive sediment or discoloration in the water. They work efficiently in homes with wells. Paper and ceramic are the most commonly used materials used to trap sediment. The quality and effectiveness of the filter depends on the amount of material that can be stored inside. If you choose to purchase this type of treatment equipment, look for the highest capacity you can find. The manufacturer can supply this information if the dealer cannot.

Iron and Fluoride Removal

An ion exchange filter works by removing metals, iron and fluoride from the water. A system such equipped doesn’t remove bacteria, viruses or other organic materials. This method is most commonly used in softener treatment systems. They are used to treat hardness, but can also remove iron, fluoride and metals. They don’t remove chlorine or chemicals.

Removal of Chemicals and Bacteria

Reverse osmosis equipment works by removing all chemicals and bacteria. The water is forced through a membrane, trapping impurities within the filter. The materials removed are flushed away with the wastewater. This is an expensive method of treatment.


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