Types of Water Filters


Water filters remove impurities from water through a fine physical barrier, biological process, or a chemical process. They clean the water for different purposes such as for swimming pools, drinking, irrigation, and ponds. The technology of water filters started back in the 1800 in Scotland when Paisley Filters were invented. An improved sand filter was later constructed at Massachusetts. In the recent years, there has been a range of water filters available in the market from which one can choose depending on needs. A single filter, however, cannot remove all contaminants in water. Here are some of the most common types of water filters.

Reverse Osmosis

  • The reverse osmosis water filter is so popular because of its ability to remove various contaminants. Furthermore, the end product from filter is odor free and clear. It removes contaminants by pushing water through semi-permeable membranes that block particles larger those of water. They, however, waste large volumes of water because of their precise purification.

Alkaline or Water Ionizers

  • This type of water filter uses electrolysis process. Water passes through plates that are electrically charged where it is separated into two streams. The streams are either acidic or alkaline. The end product is water that is friendly to the skin.

Ultra Violet (UV) Filters

  • This is the latest water filtration technology in the market and it uses UV radiation to treat water. The filters have the potential of destroying various bacteria that are detrimental to human health. They are environmental friendly filters since they do not use any heat or chemicals.

Activated Carbon Filters

  • The filters remove large particles such as silt and sediments from water. They attract and absorb the sediments so that the sediments are totally absent from the end product. It also improves the odor and taste of the water. They are available in two forms; the granulated activated carbon and carbon block.

Infrared Filters

  • In the same way as the alkaline filters, these filters also help soften water. The infrared water filters are, therefore, best suited for use by people who live in hard water areas. They use both light and heat to negatively charge water.

As mentioned above, none of the water filters can remove all contaminants single handedly. They are all equally important. One should choose a filter depending on the impurity to be removed. Using water filters is highly recommended because of health related benefits. You should, however, know how a water filter works and the contaminants it removes before purchasing one. All these water filters can be sourced from some of the local leading hardware stores and installed by a local plumbing technician.