How Does UV Water Filter Work?

Healthy drinking water

Clean and safe water is an indispensable resource in our daily lives and industrial production. However, water sources may contain various bacteria, viruses, and parasites, which pose a potential threat to human health. To effectively eliminate bacteria and viruses in water, ultraviolet water purifiers are widely used. However many people don’t know much about ultraviolet water purification systems. The following article will introduce how ultraviolet water filters work.

Ultraviolet water purification system

The built-in ultraviolet lamp generates short-wave ultraviolet rays with a central radiation wavelength of 253.7nm to sterilize and disinfect the water flowing through the reaction chamber, thereby solving the problem of excessive bacterial indicators in drinking water so that the water quality contaminated by bacteria reaches and exceeds the relevant health standards for drinking water.

UV Water Filtration System Principle

What does a UV filter remove from water? It uses the highly bactericidal broad spectrum of ultraviolet light to efficiently kill microorganisms in water, including bacteria, viruses, and some parasites.

UV radiation: The device emits ultraviolet radiation through a specific UV lamp, usually in the ultraviolet range of 254 nanometer wavelength. This ultraviolet radiation can damage the DNA molecules of microorganisms, thereby preventing their reproduction and growth.

Highly effective sterilization: Ultraviolet light has a highly bactericidal broad spectrum and can effectively kill almost all bacteria and viruses. Even some parasites that are ineffective against traditional water treatment methods (such as chlorine or ozone treatment), such as cysticercosis and giardia, can be effectively killed by ultraviolet light.

Verification and guarantee: UV water purifiers undergo rigorous and extensive verification to ensure their reliability and efficiency in different water qualities and application environments. These devices are developed by a professional scientific research team with rich industry experience to meet various water treatment needs.

Are UV water purifiers good for health?

UV water purifiers can effectively kill bacteria, viruses, and other microorganisms in water, thereby purifying safe water. People use UV water filtration systems to obtain healthier and safer drinking water and reduce health problems caused by drinking contaminated water sources. Therefore, the safety of water quality is very important to people's health, and the UV water filtration system can provide people with healthy and safe drinking water. Therefore, UV water purifiers are good for health.

In addition, although UV water purifiers can inactivate microorganisms, they need to be regularly maintained and replaced during long-term use to achieve the best disinfection effect. Therefore, when choosing a UV water purifier, it is necessary to consider various factors comprehensively, adopt a multi-layer water purification method, and match it with other water purification equipment, such as a cartridge water purifier or a reverse osmosis water purifier, to more comprehensively ensure the safety and health of household drinking water.

Home kitchen

Using UV water purifiers at home

If you want to add a UV water purifier at home, choose a purification system with an excellent filtration effect, and bacteria, viruses, and other impurities will not exist. ITEHIL Reverse Osmosis Water Filtration System is a home portable design purification system, so your family can benefit from the RO process, now with the further improvement of UV light. ITEHIL Portable Reverse Osmosis Water Filtration System can remove bacteria, viruses, parasites, heavy metals, pesticides, polyvinyl chloride, PFAS, etc. through multi-level filtration of PP cotton + activated carbon + reverse osmosis membrane, helping you to easily obtain healthy and safe water quality for your family, thereby ensuring the health of family members.

Related: How to choose the best reverse osmosis water filtration system?

Frequently Asked Questions About UV Filters

Are UV filters effective for water?

Extremely effective, UV water purification can eliminate about 99.99% of pathogenic microorganisms. Easy to install, UV water filters are easy to install. Low maintenance cost, after the initial installation, there is little maintenance required except for annual bulb replacement and other occasional maintenance.

Is it safe to drink UV-filtered water?

Yes. UV water purifiers can filter and disinfect impurities in water, effectively killing bacteria in water, making the water cleaner, and after the UV water purifier is filtered, there is no other odor in the water, so the water can continue to be drunk, and will not cause much impact on the body.

How long does it take for UV to purify water?

How long does it take for UV to kill bacteria? The UV water purification process is fast! When water flows through UV rays, bacteria, and other waterborne microorganisms are killed within 10 seconds. The UV water disinfection process uses special UV-C lamps to emit ultraviolet rays of a specific wavelength.


UV water purifiers play a key role in the field of water treatment with their efficient sterilization capabilities and wide range of applications. Reliable tools to ensure clean and safe water sources protect human health and the sustainability of various industrial processes. By using UV water filtration systems, we can ensure that our water sources are free of the threat of harmful microorganisms, making our lives healthier and safer.


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