Water Purification: How Does It Work and Why Is It Important?

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Water is the most important element of living. It keeps us healthy and alive. Many bodily functions rely on water, which makes up about 70 percent of human anatomy. There are many techniques to ensure that clean drinking water is available for consumption and other household purposes. These include bottled water and water purifiers for producing clean water.

Water purifiers deliver clean, safe drinking water, avoiding water-borne infections. In this article, we will discuss the importance of water purifiers and how they work.

Why Use a Water Filter?

The main benefits of employing water filtration are that it provides individuals with clean, contaminant-free water that tastes nice and is a good resource of hydration. It can also be a more ecologically friendly way to drink clean water because it reduces the usage of single-use plastic bottles.

Water from the tap isn’t always as clear as it appears. Even the purest tap water can pick up trace minerals and contaminants from the environment. Moreover, water is often treated with additives like fluoride which is unwanted by homeowners. Water mains often burst during storms or constructions, contaminating water supplies with germs and other particles. 

Volatile organic compounds (VOCs) cause a bad taste, toxic chemicals, and pollution. These chemicals can easily enter any municipal water system, either by mistake or as part of the water delivery process. 

Water moving through metal pipes can pick up minerals and other particles, giving it an unpleasant taste that only filtration can eliminate. In light of these concerns, setting up a water purification system at home seems logical.

The Importance of Water Purification

Water purification is a good idea for a lot of reasons.

  • Purifying water can make it not only taste and smell better, but also remove chemicals, pesticides, chlorine, bacteria, and heavy metals.
  • Water filters have been shown to cut the risk of colon, rectal, and bladder cancer by getting rid of chlorine and chlorine byproducts from the water.
  • Carbon water purifiers are made to remove only harmful contaminants from drinking water, but they keep healthy mineral deposits that help to keep the pH level of drinking water in check.
  • People who use water purification systems like reverse osmosis technology have found that they can cut their risk of stomach disorders by more than 80 percent.
  • Purified water is important for kids because it gives them clean, healthy water that’s important for their immune systems to stay strong and healthy.
  • There are more than 2,100 known toxins that can enter the body through drinking water. Water filters are your last line of defense against them.
  • Drinking clean, filtered water improves your general health and also helps you avoid getting sick.

Methods of Water Purification

Here’s a brief overview of each kind of water filtration technique.

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1. Activated Carbon

Carbon cleans the system by chemically attaching to the water pumped in. Some just remove chlorine, improving taste and odor, while others remove hazardous pollutants like mercury and lead. Filters come in block or granulated form.

2. Distillation

Distillation is an ancient way of purifying water. It vaporizes water by superheating it. The vapor is subsequently condensed into liquid water. Distillation eliminates high boiling point minerals, bacteria, and chemicals. These filters can’t remove chlorine or many other VOCs.

3. Deionization

Deionization filters use ion exchange to remove salts and other electrically charged ions from water. These filters will remove contaminants that lack an electrical charge. They will not remove living organisms like viruses and bacteria.

4. Ion Exchange

The ion exchange resin replaces hazardous ions with less damaging ones. Ion exchange softens water by replacing calcium and magnesium with sodium. To keep these filters working for a long time, the resin must be “recharged” with safe replacement ions.

5. Reverse Osmosis

A semipermeable membrane moves water by reverse osmosis, stopping larger, more dangerous molecules from entering. Because this technique can only prevent molecules larger than water, pollutants like chlorine cannot be eliminated. Many consumers prefer reverse osmosis systems because they may remove more pollutants than carbon. You can save more water by using these filters.

6. UV disinfection

This procedure uses high-powered ultraviolet light radiation, often known as UV-C or germicidal UV. UV-C rays penetrate pathogens’ bodies to kill them. The UV rays damage the germs’ DNA, preventing them from reproducing. These rays can kill 99.9 percent of bacteria.

Unlike chemical disinfection, dangerous germs cannot acquire immunity to UV light. The pre-treatment process enhances treatment efficiency. During pre-treatment, water flows through sediment and carbon filters. Sediment filters remove silt while carbon filters remove organic contaminants.

6. Mechanical

Mechanical filters can remove sediments from water, but they cannot remove chemical contaminants. In addition to other filtration methods, mechanical filters have microscopic pores that collect impurities. If your water is contaminated with grit and other particles, you may wish to invest in a mechanical filter.

7. Ozone

Ozone is commonly used alongside other technologies and is well-known for its capacity to kill large amounts of microorganisms. Ozone filters don’t eliminate chemicals, however. If you’re worried about getting sick through drinking your drinking water, this could be the best choice for you.

8. Carbon Block

Carbon block filters are formed like blocks of crushed carbon. Because they have a bigger surface area than other carbon-based filters, they are more effective. The rate at which water passes through these filters determines their efficacy. Fibredyne carbon block filters contain more sediment than other block filters.

9. Granulated Carbon

These filters use microscopic grains of carbon to filter water. Granulated carbon filters are less effective than block-shaped carbon filters due to their lower surface area. Like a carbon block filter, their efficiency is heavily impacted by water flow.

10. Water Softeners

Water softeners use ion exchange technology to lower magnesium and calcium levels in the water. They are also good if your plumbing fixtures tend to mineralize. Because these hazardous elements are replaced by sodium, the resulting water tends to be sodium-rich. If you can’t eat salt, avoid softened water. Watering plants with softened water is also harmful due to the high salt content.


As you can see, different forms of purification remove different pollutants—but there is no single technology that removes all pollutants from water. There are a lot of different ways to filter water at home, and many of them work together. If you want to buy a water filter for your home, be careful. 

Keep in mind that you won’t always get rid of all the bad things. Remember, too, that most water purifiers have some kind of ongoing cost, and if they don’t get cleaned and serviced regularly, they can leave your water in even worse shape than it was before!

Water Purification: How Does It Work and Why Is It Important? was last modified: by