What is A UF Water Purifier? Advantages and Disadvantages

Want to get rid of muddy water? Are you tired of the bland taste of boiled water? Are you looking for a permanent and budget-friendly solution for contaminated water? Are you on the hunt for the best water purifier for home use? Well, you have found just the article you need! 

The most incredible way to explain any appliance is to evaluate its upsides and downsides! We have done that for you! We have formulated a complete list of the pros and cons of investing in a UF purifier. 

Additionally, we have also included a comparative analysis between RO purifiers and UF purifiers

Want more? We have also included some commonly asked questions!


Working of UF Purifiers

UF Water filter

UF purifiers work on the principle of membrane filtrations. These membranes are semipermeable, i.e. they allow specific molecules to pass through the pores. The membrane can filter particles depending on the pore size. 

The membrane used in UF purifiers is called an ultrafilter. These filters can suspend impurities like soil, chemicals like chlorine, microbes including bacterias and viruses, organic molecules like plants and algae, etc., from water. 

The design of this device is such that it allows gravity to pull the contaminated water over the ultrafilter to give purified water.


Advantage of UF Water Purifier

Before deciding which filter is better, it is crucial to analyze the advantages and drawbacks of the method used for filtration. Listed below are 9 benefits of a UF water purifier.

1. Remove Impurities

UF filters contain microscopic pores that enable them to filter out even the smallest particles. The sediment filters and carbon filters can aid in the process by removing toxic chemicals and contaminants.  

It can filter chemicals like benzene, chlorine, rust, pesticides and other contaminants. It can also eliminate sediments and sands, resulting in the purest water attainable.

The activated carbon filter absorbs impurities such as volatile organic compounds (VOCs) from the water, neutralizing odour and taste.

Furthermore, unlike a UV purifier, these filters retain bacterias, pathogens, viruses and germs and prevent them from entering the final filtered water, making them a more attractive purchase. 


2. Easy Installation

RO and UV purifiers are complicated and heavy machines with several parts that an expert must install. A UF purifier is a relatively straightforward appliance to install without the assistance of a specialist. 

Because these filters are so compact, they may be taken out of the package and used right away without fiddling with the settings.


3. No Electricity Needed


Want to save money and reduce your electricity bill? A UF filter will be a perfect choice.

Since UF purifiers work under the influence of gravity, electricity is not a requirement. It lowers the overall operational cost of these filters compared to any other filter available in the market. 

The hydrostatic pressure and gravity allow the water to pass through the membrane and get purified. 

A UV purifier is an ideal solution in locations where electricity is a concern or frequent power cuts occur because no additional pumps or current is required.


4. Minerals Retained

While purifying water, a RO membrane can filter out vital minerals. As a result, some purifiers incorporate mineral cartilage that aids in the replenishment of essential minerals in purified water.

To function effectively, the human body requires essential minerals and nutrients such as potassium and magnesium. Magnesium deficiency, for instance, has been linked to neuromuscular problems, hypertensioncardiovascular disorders and type 2 diabetes.

Since potassium is an electrolyte is can help in maintaining the electrolytic balance of the body. Lack of potassium has been linked to kidney failure, excessive sweating, constipation, high blood pressure, fatigue, etc

Since a UF filter retains minerals, the problems associated with mineral deficiencies can be avoided. 


5. No Water Wastage

Save Water Poster
Save Water

We live in an era when everyone is environmentally conscious and is driven towards sustainable living. An RO purifier wastes litres of water, and that is very concerning to the common mass. 

A typical RO water purifier wastes roughly 80% of its water supply, meaning that 1 litre for every 5 litres of water is converted into wastewater! 

A UF filter functions similarly to a RO filter, but without wasting water! Those who want to keep track of their water usage might consider investing in a UF purifier.


6. Cost-Efficient

UF purifiers are the most budget-friendly option due to their simple design and functioning. 

RO and UV purifiers are on the more expensive side of the scale because of their sophisticated functions and additional features such as mineral cartilages, taste enhancers, pH modifying chemicals, etc.

Since these filters do not require electricity to operate, the operational cost is also minimum.


7. Low Maintenance

Since the machine is relatively less complicated with few parts, the maintenance is easy! It does not require professional or high-end tools to clean it. Simply cleaning the membrane once a month can help in increasing the life of these purifiers. 

Furthermore, unlike the RO membrane, which must be replaced every two years, the membranes used in UF filters are robust and can last for years without changing. 


8. Portable

The purifier is particularly portable due to its small size. If you don’t have enough room, a large purifier can make the whole room feel cramped. 

A UF purifier may be the best option if you frequently travel or often relocate because it does not require installation. 


9. No chemicals Are Used.

Chemicals like flocculants, coagulants, defoamers, reducing agents, etc., are generally used to clean water and get rid of contaminants. These chemicals are harmful and can cause irritation and headaches. 

The principle behind UF purifiers uses filters; chemicals are not used in this entire process. 


Disadvantages of UF Water Purifier

Knowing the drawback associated with this purification technology is imperative to get a complete picture of this purifier. 

Let us discuss two significant issues with a UF purifier.


1. Cannot Remove Total Dissolved Solids


Solids in water can either be particulate or dissolved. A UF filter can easily remove the former contaminants; however, it cannot eliminate solids that are dissolved. It is a significant disadvantage of a UF purifier because it will not treat water with high TDS.

According to WHO guidelines, TDS should not exceed 300 ppm and values greater than 1200 ppm can cause health problems. 

Thus, ensure that before investing in a UF purifier, you check the TDS of the water. If the level is high, you might want to choose another option.


2. Biofouling

A UF filter traps biological contaminants like bacteria’s, viruses, algae, etc. can accumulate on the filter and colonize to form biofilms over time. It is called biofouling.

The surface of the filters is moist, and hence it is an ideal environment for organisms to replicate and grow in numbers. The functionality and efficiency of the filtering process might be compromised by biofouling. It can potentially damage the filter and necessitate its replacement.


Let’s Compare

People tend to get confused between a UF filtration and an RO filtration process since they both work on the similar principle of membrane straining.

RO Purifier UF Purifier
Since the process is against the natural laws of gravity, additional pressure is required. The process works in alignment with gravitational force and hydrostatic pressure, hence no pressure is required.
Pore Size: 0.0001 Micron Pore Size: 0.1 Micron
TDS is reduced by 90% Cannot alter the TDS level in the water
Multivalent and Microvalent Ions can be eliminated No effect on the ion concentrations
It can filter heavy metals. It cannot retain heavy metals. For instance, these filters are infective against mercury, arsenic, lead, cadmium. These heavy metals can cause severe diseases and impact the normal functioning of a human body.



In this section, we will address some commonly asked questions to help you make a better decision. 

1: Is a UF purifier a more advanced boiling method?

Answer: Boiling is a time-consuming process that frequently alters the taste of water. On the other hand, A UF purifier is simple and can effectively filter pollutants and germs. Boiled water contains dead organisms, but UF membrane-purified water is free from them.


2: Can UF purifiers eliminate cysts and eggs from water?

Answer: UF purifiers employ hydrostatic pressure to purify water through filters. It can kill pathogens and cysts due to the pressure induced by water on these biological contaminants. 


3: UF purifiers take time to purify water?

Answer: Nope, UF purifiers operate quickly and can give filtered water instantly. 


 4: Can we combine them with other methods for a complete purification system?

Answer: Yes, you may get the best of both worlds with a multi-technology filtration system. Every technology has flaws; integrating them can improve the result. When UF is combined with RO or UV filters, it cannot eliminate TDS and germs.



An ultrafilter physically removes contaminants from water such as bacteria, viruses, particle particulates, chemicals, but it cannot remove dissolved salts or heavy metals.

The complete setup is simple to put together and takes up very little room. It can provide pure water without the use of electricity or pumps. Since these filters are basic, they are inexpensive and require minimal upkeep. 

Let us know if you found this article helpful. Don’t forget to tell us in the comments below which purifier you purchased!


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I am tech writer who is passionate about technology and spearheads the core writing team on tech news

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