How Is Water Filtered? Free Drinking Water Filtration Methods


Water filtration is a process where water gets purified from harmful contaminants such as metals and parasites. There’s no hiding the fact that humans can suffer from too much Lead, Copper, pollutants, and bacteria. They are commonly found in tap water and sometimes in bottled water. Filtered water can have a better taste and smell.

How do you know if the water has been filtered? You either filter it yourself or you purchase water that has been through the filtration methods below. Most techniques are easy to accomplish and very effective.


We have started with the best method possible. Old methods aren’t necessarily the best options but in this case, this is a superior method. The process involves the conversion of water into a vapor which subsequently comes back as purified water. This method will remove the harmful solids from nonvolatile ones. If you suffer from consuming too many metals, this is the best option for you.

Whilst it’s true that it may take a long time to effectively get purified drinking water, it’s worth the wait. You should know that this method removes the water from the contaminants, not the other way around. The bacteria, pesticides and organic chemicals will be left behind.

The EPA has concluded that there has been found over 750 chemicals in tap water. As well as, the chemical compounds used by industries are growing each year. Thus, you need to be careful about the water you drink.

In order to understand better, below there are frequently asked questions with answers which will help you to understand this technique better.

Q. What about the chemicals with a lower boiling point?

In order to be efficient, you have to do it carefully. Tap water is heated just below the boiling point in order to kill the toxins that have a low boiling point. After they evaporate, the water gets fully heated. Thus, everything happens in stages.

Q. Can I do this at home?

Yes, in few steps you can distill water yourself for free. All you have to do is boil water in a bowl inside of a pot filled with tap water, create a condensation effect by filling it with ice, then watch the magic happens. When the process is done, allow some time for the water to cool down before you drink it.

Q. I’ve read that distilled water is acidic, is it true?

Whilst it’s true that if you leave distillate water outside for a long period of time, it can reach a pH of 6. This shouldn’t be a worry if your digestive system is working well. Many foods are high in acidic levels. Our bodies are made to counteract high acidic levels.

Ion Exchange

This method will exchange the contaminated ions with other clean ions. This process is used for softening or de-mineralization. During the softening technique, it will remove water hardness. The harmful calcium and magnesium. In addition to this, it will also remove arsenic, fluoride, and nitrate. They all lead to a bad digestive system and shorten our life expectancy.

After the process, both the contaminants and the exchanged substances are dissolved by an electrical charge. You can rely on this method to provide you with fresh water if you monitor the regeneration process regularly. Once you lose interest, so will the water quality. Such system includes a tank where salt is stored and connected to an ion exchange resin tank. When water comes in, harmful chemicals are removed in the ion exchange tank with the help of the salt tank. Then it is transferred to your tap.

Thus, deionization plays a very important part in the purification system. However, you have to mix it with other methods in order to be sure you achieve clean water. On the other hand, it’s able to remove inorganics effectively.

Q. What are the limits of this method?

This is a suitable method for water with a low concentration of contaminated particles. If there are several grams of toxins in a liter of water, it will not work properly. The ion exchange cycles will become short and it will not remove every single toxin particle from the water. Thus, you have to ensure that your water source is not from sea water or that it has high salinity.

Q. How expensive is it to have it at home?

An initial cost will set you back few hundred dollars. However, this is an investment rather than a meaningless purchase. The system will resist for many years to come so you will reach the point where the product outlives the initial costs.

Q. What chemicals make my water to be considered ‘hard’?

The usual components of hard water are metals such as calcium, and metals. You would consider it ‘hard’ when it measures around 5 grains per gallon or 68 parts per million of dissolved minerals. In order to find out how hard your water is, you will have to get it tested locally.

Reverse Osmosis

This is somewhat similar to ion exchange process. It can remove up to 99% of harmful ions, salts, chemicals, bacteria and pyrogens from drinking water. In fact, it can remove any molecule that weighs more than 200. This method removes them by pushing water under a lot of pressure through a semi-permeable membrane.

This membrane will allow some atoms to pass through but not the others. It has tiny holes that are specifically designed just for the safe water to pass through. However, in order for it to work, you need to supply a lot of pressure. This is where it requests a high-pressure pump. How much pressure it requires, depends on how full of toxins the water is.

Q. Does this system requires to be provided with electricity

Not at all. It works through the water pressure. The only money you would be spending is on the system itself or any other accessories you may wish to add. This includes an electric pressure pump or UV lamp.

Q. I’ve read that the membrane doesn’t remove chlorine, is it true?

The system has been designed with a number of carbon filters which do not allow chlorine to pass through. In short, the chlorine will be removed before it reaches the membrane. Otherwise, the chlorine deposits would completely damage it.

Q. How much water does Reverse Osmosis waste?

Whilst it’s true that it uses water to clean itself from the remaining impurities, it does not consume a large amount. To put it in simple terms, you would waste around 4 extra toilet flushes a day. It will not bring up your water bill significantly.