How to Choose Between Different Types of Water Filtration Systems

Posted By on Jan 15, 2015

Tap water may contain various undesirable substances, dissolved or in solid state. Among them you can find various chlorine compounds, substances of petroleum, fertilizer residue, pesticides, sand, rust and the list goes on and on.
The water filtration systems are designed to get rid of them. With so many option available on the market, choosing a water filter can be quite difficult. Hence, this article will help you make the best choice between different types of water filtration systems.
How to Choose Between Different Types of Water Filtration Systems Picture How to Choose Between Different Types of Water Filtration Systems Picture

Types of water filter systems

  1. Activated Carbon

    The active carbon system is characterized by a positive electric charge: the magnet attracts the impurities found in water and many chemicals invisible to the naked eye. For example,  in a container with a carbon filter, under the effect of gravity, the water flows through the coal, but the negative ions from the contaminants will settle on the carbon particles.
    There are two types of activated carbon filters: powdered block filters and granular activated filters.
    Activated carbon filters fight very effectively against pesticides and herbicides but also against chlorine, radon or benzene. However, their efficiency is more limited with other substances such as lead, mercury or copper. In this case a reverse osmosis system is more advisable.

  2. Reverse osmosis water filters

    This process forces the water to go through a membrane that retains particles and molecules larger than water. The reverse osmosis system can remove a large number of substances that activated carbon filter can not retain. Thus, arsenic is eliminated, fluoride, hexavalent chromium and nitrates. On the other hand it can not neutralize chlorine or volatile organic chemicals removed by activated carbon filters. For best results, the two systems are very often combined in the same device. Users should be aware that these systems consume from 3 to 20 times more water than it is regularly produced.

  3. Distillation water filters

    This technology causes the vaporization of water, the steam is then cooled until it is changed back into water. The process removes minerals, a large number of bacteria and chemicals. However it can not remove chlorine, trihalomethanes or other volatile organic substances.
    A water distiller effectively removes all organic and inorganic contaminants and biological impurities, whether metals, minerals, chemicals or microorganisms: lead, copper, plutonium, sodium, potassium, chloride, nitrates, chlorine, insecticides, herbicides, bacteria, etc.
    Water distillation is a clean, secure, and environmentally friendly water filtration system.

  4. Other home water filter technologies

    Ultraviolet (UV)

    These systems use ultraviolet light to kill bacteria and microorganisms. It does not remove chemicals.

    Water softeners

    These devices use ion exchange system to decrease calcium levels and magnesium (which can be deposited in pipes) and some forms of radium and barium. It does not remove other pollutants from water. The process may result in higher levels of sodium in the water. Some people may be advised by their doctors to avoid water softeners.

    Ion Exchange

    This technology filters water through bead-like spherical resin materials. One procedure consists in the use of water softeners, when calcium and magnesium are replaced with sodium. The resin has to be periodically “recharged” with ion exchange.

    Mechanical filter

    Similar to the ceramic water filter system, these filters have small holes that allow water to pass while retaining parasites, rust and other sediments. It is often used with other types of filters, because it can not remove chemical contaminants.


    The ozone kills the bacteria and microorganisms, and is often used in conjunction with other filtration methods. It is not effective in the removal of chemicals from the water.

    Ceramic fibers

    Ceramic filters have small holes in the structure of ceramic materials that filters impurities in solid form (sediments). These filters do not remove soluble substances dissolved in water.


    This process removes some substances in the form of ions in water: salts and other molecules with electrical load. This process can not eliminate trihalomethanes or microorganisms.

We hope that the information presented above will help you better understand water filter reviews, so that you can make an informed decision when buying such a device. For some accurate reviews, go to the website. The articles presented there are easy to understand and they will help you make the right choice for your home.