Many reviews written on water filters only touch on commonly used filtration products - for example, carbon - and how they work to make water cleaner and safer. Carbon absorption is a process where dissolved solids and gases in water adhere to the solid medium's surface. As water flows through the carbon, any impurities will be retained by it, allowing the filtered product to pass through.

 

Aside from these carbon-driven systems from http://berkeyfilters.co/best-water-filtration-system, which are relatively low-cost, there are many other methods of filtration that consumers can use. For instance, distillation, an old-fashioned filtration technique, is used to make salty water suitable for human consumption. Nowadays, it is used to produce safer water in various areas around the world. Water is heated up to a point when it becomes vapor, removing impurities in the process; and then, it is again and transformed back into water. In reverse osmosis, another filtration method, water is pressurized and pressed against a membrane (a fine sieve). 

 

All water filter reviews will tell you that water will come out cleaner after any of these techniques, but of course, there are those which are better than the others. Reverse osmosis, for example, may be more expensive and wasteful and yield less clean water than the other techniques mentioned. Also, chemical impurities found in water may be smaller in molecular size than water itself, meaning they will only flow right through the membrane with the water, instead of being filtered out.

 

Distillation may also be slow and require laborious maintenance. Many chemicals have lower boiling points than water, so they may turn into vapor and be recollected together with the clean water. In both osmosis and distillation, it has been revealed that magnesium, potassium and other important minerals are removed from the filtered product. To gain more knowledge on how water filter works, you can go to http://www.britannica.com/topic/water-purification/images-videos/Schematic-diagram-of-a-rapid-filter-water-treatment-facility/19280.

 

Although most reviews will say that carbon filters are very useful in removing impurities from water, carbon filter systems can  only work with limited amounts, and that makes them not very practical for bigger families or households. Carbon filter cartridges have to be replaced often, and the system only processes an amount of water that is too small in relation to the entailed costs. Many of these carbon filters include only one cartridge for straining out the impurities. Water filter reviews mostly claim that this is the most effective way to filter water contaminants.

 

However, if you explore more complete water filter reviews, you can see that filtration systems involving multiple steps are the best option available to consumers. This simply means that when you run water through different types of processes, the final product will be better. Multi-step purifiers come with ion exchangers, where lead and other heavy elements are switched with potassium. Larger particles will be removed together with the microorganisms, and only pure water will proceed to the main water tank. You may click here to read more reviews.