What is UV water purification?

What is UV water technoloy

UV water purification is a method of water filtration which uses ultra-violet light to kill all germs, bacteria, microbes, cysts, etc. in water. Ultraviolet water purification is a simple but effective process that destroys around 99.99% of the harmful organisms in water.


There is a mercury vapor lamp, also called germicidal lamp inside the UV water purifiers. This lamp is connected to an electric arc that produces heat to vaporize the small amount of mercury inside the lamp. The vaporized mercury becomes ionized which in turn gives off short wave ultra violet radiations. These UV radiations irradiate the water and penetrate the cells of bacteria and viruses, destroying their ability to reproduce. These organisms fail to multiply and eventually die. This purification method only kills the germs but the bodies of the dead germs remain in the water. Separate filters are required to remove the germs physically. UV water purification is usually done in conjunction with other forms of filtration such as reverse osmosis or activated carbon filters.

Pros of UV water purifiers

  • A normal UV purifier requires very less energy for operation, approximately the same amount of energy as a 60 watt bulb
  • UV rays do not damage septic tank or plumbing systems
  • UV filters do not introduce chemicals or bi-products in water due to which the taste and odor of water remains unaltered
  • UV purifiers are easy to maintain as the mercury lamp is replaced only once a year
  • They are affordable and easy to install

Cons of UV water purifiers

UV purifiers work well when the water is clear. They are not very effective when the water is muddy and contains sediments. Also UV rays only kill the germs but the bodies of the dead germs remain suspended in water. Therefore separate filters are required to remove the germs and sediments physically.

UV water purification method works best when used with RO purifiers. UV rays kill the harmful microbes and RO process filters them out. Also the dissolved salts and suspended particles which the UV purifiers cannot remove are taken care by the RO filters and membrane.

You might also like


  1. 1

    Since we are talking about drinking water in Dubai so Tap water or plastic bottles cant be permanent solution in household, u will definitely need a water purifier.. I am particularly talking about water purifiers because I have a lot of experience about aqua filters or water purification systems. but the questions are, can we actually trust water purifiers? Are all purifiers actually same? Do they really work or is their any difference between technology?
    The thing about all water purifiers is that they are based on same technology but if we talk about something different upon my experience as I am Middle East citizen. I would suggest “Eureka Forbes UAE” in terms of their water purifiers which use RO and UV water purifying technology they are really great in terms of energy saving and taste, along with this they also offer other unique water solutions and products from domestic to industrial level, but I personally recommend Eureka Forbes Dubai for their customer service which is really fast, responsive. If you are here looking for a best water purifier or water processing technologies i.e. UV Sterilizers, Water Softeners, Fine Sediment, Water Filter etc. they are using MURAL CRM for customer management and service scheduling, https://eurekaforbes.ae #waterfilter #waterfilters #aquaguard #eurekaforbes #bestwaterpurifiersindubai #DubaiWaterFilters #EurekaForbesDubai #DubaiROFilters #

  2. 2

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>