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Water Purification Systems – Basic Types

Water JugWater purification systems, portable domestic or commercial have been around for some time. In the last fifteen years, a number of highly effective tap water purification systems for the home have appeared on the market, some of them have become quite popular. Why is water purification needed to begin with? Water, provides a thriving environment for many bacteria many of which pathogenic i.e. detrimental to health. Even water in natural catchments like rivers, lakes etc. away from human caused pollution may contain harmful bacteria. On the other hand, water may become contaminated through human action or inaction, this could happen in the case of chemical spills. In some parts of the world, tap water supplied to general public is non-drinkable, but for washing purposes only. All of these require the development and use of effective water purification systems.

Water purification systems is a wide term used to describe the various methods and technology used for killing bacteria, neutralising chemicals and their subsequent separation or extraction from water supplies in order to make it drinkable, or otherwise suitable for use. Science and technology have allowed for the creation and implementation of various water purification systems, ranging from ones intended for personal use, or at home to large scale installations able to recycle and purify large amounts of water for local or even regional use.

One of the oldest and most effective ways to purify water, which is still widely used today is boiling. Heating up water to boiling point and maintaining that temperature for a certain amount of time will kill off all bacteria and organic pathogens in the water, making it drinkable. This method however is slow and cannot be performed on a large scale as it requires large volume vessels, constant heat etc. Boiling water is a common way to purify water in the outdoors, and is used by hikers, campers etc. For information of personal water purification systems and methods, you can visit

There are various domestic water purification technologies, ranging from small scale ones like ionised filter pitchers to professionally installed water purification systems able to supply an entire household with drinkable water. One thing that all water purification systems, big or small, have in common is the fact that they take time to do their job properly. Water purification is not an instantaneous process and the better purification and quality of water, the longer it takes to achieve it.

Purification PlantFiltration is another common and highly effective water purification method. Such systems can have both domestic and commercial application. Filtration systems make use of various types of filters, like ceramic ones for instance. Water is pumped through the filters at a certain rate per minute or hour and as it passes through the different filters (as usually such systems contain more than one filter) bacteria, chemicals and other impurities are gradually removed. Some filtering systems may cycle water a number of times before removing all impurities and bacteria.

Large scale water purification is usually done through the use of chemicals. In some cases these are added directly to the water supply, in other cases water is cycled and filtered through certain chemicals or substances which purify it. One common method for chemical water purification is active charcoal absorption. Another widely used method for disinfecting large amounts of water is chemical disinfection with halogens. Certain halogens like iodine / iodine crystals or halazone tablets are not necessarily effective in removing all or certain impurities, so in some cases it might be necessary to run water through various purifiers, or to use a purification method which is specifically effective on the given bacteria or chemical contaminating the water.

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