UV vs RO Purification – Which Water Purifier Is Best?

Drinking clean water is an unquestionable right of every human. It is important to ensure a healthy body and healthy mind. However, with rising pollution and population its availability can’t be assured in every place. Many diseases across the world have been affiliated with the bad quality of water. This clearly demands that we ensure that water coming to our home is pure and clean. Dirty water not only consists of water-borne diseases but also other harmful particles. These can be pesticides, heavy metals, fecal material of humans and animals, and other poisonous substances.  For this reason, we must look out for an effective water purifier that ensures healthy drinking water. However, with so many available in the market it is difficult to choose. To make you choose the right one, we have compared  UV and RO purifiers. Let’s understand what they are?

What are UV purifiers?

UV purifiers work with ultraviolet rays which remove harmful microbes from the water. UV rays destroy the DNA of pathogens, which further disrupts their reproduction mechanism. And hence, effectively kills them. An important feature of UV purifiers is that they do not add harmful chemicals to the water. Also, keeps the taste and nature of water the same. In a UV water purifier, the water is passed through a tube where it gets exposed to radiation. And hence, it cleans water instantly. Even though the process cleans the water of pathogens, it is not very effective in removing TDS and dead bacteria. Owing to this, it is not very effective with muddy water.

What is RO(reverse osmosis) purifier?

Reverse osmosis purification is one of the best purification technology available on the market. It not only kills the microbes but also eliminates them.  In addition to this, it also removes the dissolved solids from water. It uses a semi-permeable membrane. Through this water flows from high pressure to low pressure allowing only water molecules to pass, leaving behind other contaminants.

RO purification not only cleans the water but also makes it fit for drinking. It removes dissolved salts (TDS) from water and even converts hard water into soft water. With its multistage filters, it preserves the natural nutrients and minerals in the water.

UV or RO purifier?

Let’s understand which one is better so you make the right decision in purchasing a suitable water purifier.

UV purifier

      RO purifier

  • UV purifier kills disease-causing microbes.
  • RO purifier also kills disease-causing microbes.
  • It doesn’t remove dead microbes.
  • It removes dead microbes and gives more hygienic water.
  • It doesn’t have a multistage filter.
  • RO purifiers Have an Inbuilt multistage filter consisting of a pre-filter, sediment filet, carbon filter, and side stream RO filter.
  • UV rays don’t remove TDS/ sediments from water.
  • It is Efficient in reducing TDS in water.
  • UV rays might remove useful minerals.
  • The natural minerals and nutrients are preserved in RO.
  • It doesn’t work well in muddy water.
  •  RO works well with muddy water with a great amount of sediment content.
  • It Keeps the natural taste. So if foul taste, it will remain the same after purification.
  • It enhances the taste.


  • It works well with normal tap water pressure.
  • RO requires high water pressure and might need an additional pump.
  • UV purifier neither removes heavy metals nor dissolved salts.
  • RO effectively eliminates harmful metals and dissolved salts from water.
  • It gives instant purification.
  • It takes time to purify water.
  • UV purification doesn’t work on hard water.
  • It works on hard water and changes it to soft water.

Hence, we can say that RO is the best option when the tap water supplied to your house has more sediments. If the problem is only microbes, you can go for a UV purifier.

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