A lot of different companies associated with water claim to offer or produce the purest and cleanest water. But how do we find out whether their claims are true, or just marketing and advertising? This article compares the most popular water filter systems and water treatment methods, and provides an overview how effective these water purification systems work. |
Activated Carbon Filters
Granular Activated Carbon Filters are efficient and cost-effective water treatment devices, but the consumer has to consider its limitations. Activated carbon filters are able to remove concentrated chemicals (chlorine, trihalomethanes, fluoride), organic material (humus, algae), and microscopic contaminants (herbicides, pesticides, fungicides). Yet when used too long, activated carbon water filters can easily breed bacteria, so one has to ensure to change the filter cartridge regularly.
Reverse Osmosis Systems
Reverse Osmosis is able to remove fluoride from the water, as well as most mineral constituents, such as salts, lead, calcium and iron. This water treatment process is ineffective in taking out a variety of contaminants found in municipal water, such as chlorine and volatile organic chemicals. Water treated with reverse osmosis produces unhealthy drinking water as most healthy trace minerals and salts are also removed during the purification process.
KDF Filters (i.e. KDF process media) are characterized through a "Redox" reaction (Oxidation-Reduction). During this oxidation reduction reaction, harmful contaminants are changed into harmless components. Zinc and copper are the preferred metals used in the KDF alloy since both are relatively good reducing agents regarding common inorganic contaminants.
KDF process media change, for instance, free chlorine into benign, water-soluble chloride, which is harmless and carried through the water supply. Moreover, there is no need for electricity, no water waste, and the filter is not likely to breed any bacteria. The downside is, however, that KDF filters do not remove fluoride (fluorosis damages bones and teethes) and organic contaminants. A good alternative is to use KDF filter in conjunction with other water filter media.
Water Softeners (Deionizers)
Water Softeners or Deionizers are able to remove the hardness of the water, i.e. calcium and magnesium. Benefits are less pipe scaling, softer feeling clothes, and a longer life of household appliances such as dish washers and washing machines. However, as deionized or softened water contains high amounts of sodium, it isn't good for people's health. That is why softened water or deionized water shouldn't be used for drinking and cooking (the watering of plants and lawns isn't recommended as well).
The process of water Distillation is relatively slow and must be repeated several times to ensure significantly pure water. It is a good way to produce pure water removed of salt, nitrate, and pathogens. However, synthetic chemicals common in municipal water such as herbicides, pesticides, and chlorine solutions can't be removed through distillation, because their boiling point is lower than the one of water. In addition, distillation removes natural trace elements, thus turning it acidic (hydrogen composition becomes greater in proportion). Long-term consumption of water that is demineralized in that way, can be harmful to the body system and may result in mineral deficiencies inside the body.
Point of Entry Systems
A Point-of-Use System only affects the water at exactly that faucet where the unit is installed. A Point-of-Entry System, installed at the main in-line water feed to your home, is the better choice, as it provides pure and safe water throughout the entire home, including every faucet and shower head inside and outside the house.
Activated Carbon Combined With KDF Process Media
A Point-of-Entry Water Purification System that combines activated carbon with kdf filters is a product that purifies all the water coming into your home or business and removes up to 99% of all contamination, including biologicals, chemicals, and metals, but leaves the trace minerals which are important for health. It provides an unlimited supply of clean, pure, and pH neutral water for the whole family at every faucet in the house.
So it is by far the best choice when considering purchasing an effective and reliable Whole House Water Filter to combine the filtration technologies of Activated Carbon and KDF process media. In this way heavy metals, chlorine, volatile organic chemicals, and other toxins are effectively removed at the highest levels of any home water filter system on the market today. All components should be NSF certified.
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