Drinking Safe and Pure Water Makes you healthier and it also suppresses appetite.

There are many health benefits of Drinking the pure water.

RO vs UV

It is very important to choose the  best Water Purifier since there are a lot of harmful particles like bacteria, lead, artificial chemicals, pesticides that are present in Both Well water as well as Metropolitan Water Supplies.

Reverse Osmosis Purifier (RO), Ultraviolet Rays Purifier (UV), Ultrafiltration (UF) are the three most important methods of purification technologies that are widely used in India and all of them have Pros and Cons as well.

After you know the difference between the Ro, UV, and UF Water Purification system, you can select the Best Water Purifier that is suitable for you.

Before you select any water purifier, you have to know the basic terminologies like TDS. In the previous post, I had covered the TDS (Total Dissolved Solids).

Difference Between RO UV UF Water Purifiers

RO Water PurifierUV Water PurifierUF Water Purifier
Requires Electricity to operateRequires Electricity to operateNo Electricity required
Kills and Removes all the Bacteria and Viruses from the Water.Kills all Bacteria and Viruses but their Dead Bodies remain in the Water.Kills and Removes all the Bacteria and Viruses from the Water.
Requires Electricity to Boost the Tap Water PressureUV Water Purifiers can work with Normal Tap Water Pressure.UF Water Purifiers can work with Normal Tap Water Pressure.
Removes the Dissolved SaltsCannot remove Dissolved SaltsCannot remove Dissolved Salts
RO Purifiers has Prefiltration system to work with the Dirty Water.Water should be clear for UV to work.Works with Dirty Turbid Water.
RO Water PurifierUV Water PurifierUF Water Purifier

The Reverse Osmosis Water Purification System or RO Water Filter Requires electricity to operate, and it can remove the Total Dissolved Solids that are present in the Water.

The RO Water Purifier also offers prefiltration in case you want to purify the Dirty Water, and the purifier removes all the virus and Germs, but it requires electricity to boost the pressure of the Tap Water.

Reverse Osmosis Requires a lot of Water, If you input 3 Liters of Water into an RO Purifier, you will Get 1 Litre of Pure Water and 2 Liters of Dirty Water.

You can make use of the Dirty Water for mopping the floor and cleaning the house.

The Domestic RO Purifiers that are available online are not capable of desalination which means they can’t convert the saline water to fresh water. Also, unbranded RO water purifiers do not retain natural minerals.

Thre are a lot of RO Water Purifiers Available online, But a Good RO filter is capable of not only removing the bad salts and hard metals but also retain the natural minerals in the water.

The UV Water Purifier also requires electricity to work, but it doesn’t need additional power to Boost the Tap Water Pressure. It can work with Normal Tap pressure.

The UV Water Purification system can kill all the Germs, bacteria and the Viruses present in the water but the dead bacteria will remain in the water.

The UV has proven to be reliable and cost-effective methods of water purification. UV technology is chemical free, and it does not change the taste and the color of the water.

On the top of all these features, the UV systems are compact and can be easily maintained.

The Ultrafiltration, which is termed as UF, is another water purification system that works without electricity and completely kills and removes all the Bacteria, Viruses and other microorganisms from the water.

Unlike the UV Water Purifier, the UF purifier removes all the germs and dead bacteria from the water after killing them.

The UF Water purifier doesn’t require electricity since it doesn’t require Tap water pressure and works well with the regular pipe water pressure.

The only lag about the UF water purifier is that it will not remove the Dissolved solids in the water. So, you can use the UF purifier only when you are sure about the Level of the Dissolved solids in the water.

You need an RO Water purification system when the Water contains a lot of Dissolved Salts. Also, If you don’t know about the TDS levels in the water, it is good to opt for a Reverse Osmosis Water Purifier.

RO vs UV

Ultra Violet Purification: How it differs from RO?

The RO process takes care of the major aspects of purification. However, traces of contaminants like certain germs, bacteria, and microorganisms sneak through the RO filters.

These germs can cause dangerous diseases like typhoid, dysentery, and diarrhea. The UV purification system comes to the rescue by elimination such dangerous bacteria from the RO purified water.

The biggest disadvantage of the RO water purifying system is that it wastes a lot of water depending on the concentration of the impurities.

On an average, you have 1 part of pure water to every 2-3 parts of reject water. This can be a criminal waste considering the fact that there is an extreme shortage of water resources.

Ultraviolet filters do not waste any water. They do not use chemicals to purify water thereby ensuring they maintain the taste of water.

The UV filters do not require as much maintenance as the RO filters do. However, the UV filters are not capable of removing salts, nitrates, fluorides, and heavy metal impurities like arsenic and lead.

RO vs UV vs UF

Ultrafiltration – How is it different from RO and UV?

Ultrafiltration process does not require any electricity to operate. The UF membranes have slightly larger pores as compared to the RO membrane filters. They can take care of bacteria, viruses, and germs, but are ineffective in eliminating TDS.

The advantage of UF is that it does not require much maintenance and the filters have the capacity to last long. These filters are not efficient in handling heavy metals and water with high TDS levels.

UF differs from UV in the sense that it does not make use of ultraviolet radiation to remove impurities.

Final Words – Wrapping it up

Every type of water filter, RO or otherwise has some negative aspects. A combination of RO, UV, and UF along with TDS controllers is the best one for every Indian home. Ensure to have this combination in the water purifier you select.

Now you know the Difference Between RO – UV – UF Water Purifiers. If you have any queries regarding the water purification systems, post them in the comments section below, and I’ll be Glad to answer them 🙂

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I am having Kent Pride Plus model which has RO + UF + TDS controller + UV in tanks. But UV in tanks works only half an hour in two hours that means if the tank is refilled before two hours than UV will not work.
Please guide whether the water is safe for drinking.


The TDs level of water is around 150 ,Which purifier should we choose.Is aquaguard Superb a good option or kent maxx


I see a lot of Alkaline Purifiers in market. TDS level in my area are below 200 and sometimes in Summers have to get water through tankers. Please suggest which water purifier RO or Alkaline.


Maximum purifier have RO+UV is it ok or we required uf also . I m in dehradun and municipal water tds is around 300

Kitchenarena Team

For TDS 300ppm, RO is not required. Only UV/UF is enough.

MANOJ kumar Meher

We are drinking phd supply water
so which purifier is best for us RO or UV?


Alkaline ro is better or normal ro. Can we prefer ro and uv with out uf and tds

Kitchenarena Team

Alkaline and Reverse Osmosis are two different methods of water purification. There is no water purifier model that comes with both the RO and Alkaline Purification process. In fact, Alkaline water purifier models are not much available in India. Depending on the TDS levels in your water, you have to opt for an RO or normal UV/UF water purifier. Also, it is better to buy an RO that comes with a TDS Controller or Mineralizer.


TDS of water is 175,so for water purifier RO is required or not..only UV is enough?

Kitchenarena Team

TDS 175 is good. RO is not required, you can install an UV/UF water purifier like Kent Maxx.


hi sir ,

i have been looking out for a new water purifier for my home .

the water which is supplied is from municipality.

so i am thinking to buy uv + uf water purifier .

my budget is 13,000 rs

i m bit confused about which brands should i choose

kent, aquaguard or livpure.

as uv+uf technology doesn’t require much maintenance .

planning to use it for the next 10 years .

can u also suggest some good models

hope to get an answer from you soon and thanks in advance.

Kitchenarena Team

What are the TDS levels in your water source? As you mentioned that you get water from the municipality, the TDS levels will be generally good, so UV + UF water purifier will do the job. But, if you are planning to use the water purifier with borewell water, RO technology is required to purify the water.

Checkout the below uv uf models

Kent Maxx 7 L UV + UF Water Purifier (Amazon Link – http://amzn.to/2ddbmS1)
Aquaguard Superb 6.5-Litre UV + UF (Amazon Link – http://amzn.to/2y3QWmW)


in my society the water is supplied through only municipalty. there is no borewater. but only on few occassion water tanker is called . i am planning to buy kent maxx as suggested by you. thanks for the reply.


We have Aquauard Enhance UV +RO plant. Water supply is from tubewell , with TDS of around 600. We want to remove/ bypass RO unit / tube.

Is it ok to have unit without RO unit ?


I am in Chennai near the coast. TDS is close to 1800 and the water is slightly salty to taste. Will RO work for me.


Hi Shiva,

I am from Rajasthan. In RO based water purifiers a lot of water is wasted. Does the same holds true for UV/UF combined water purifiers as well. Thanks.



Your blog is confusing.

You mentioned

-RO can reduce TDS and also kill and remove germs, bacteria, virus.

-UV kill germs, bacteria, virus (using electricity) Donot remove these dead bodies plus cannot reduce TDS.

-UF kill and remove germs,bacteria, virus. Donot reduce TDS.

1) So if I have high TDS (more than 200) it’s mandatory to use RO. Then why you suggesting to use UV-UF even though RO is doing all??

2) Why are all big brands combining RO, UV,UF together in one product when each of these are doing same task??

3) What is TDS adjuster?? Information I have is companies mix small amount of untreated water in treated to increase TDS level in final water output?? Do you have some insight how it works??

4) With high density membrane water purifiers RO based reduce TDS by90-95%. Then how can they adjust TDS??

Kitchenarena Team

If the TDS levels are more than 300ppm, you should opt for an RO water purifiers. Most of the RO water purifiers come with UV/UF combination for additional purification, to ensure the water is 99% free from germs. Please read the below posts to know more about TDS Controllers and Mineralizers.



I have couple of questions after reading your Article and the posted questions, the basic premise being that the quality and contents of Water keeps on changing from day to day and we CANNOT control it:

1. Why does UV/UF used with a Slash?

2.Do we need only one of these or both?

3.Does any System have both?

4.If one has to choose between UV and UF, which one is better assuming normal Corporation Water which we all know how good or bad it is?


Kitchenarena Team

Most of the RO water purifiers are equipped either with UV or with UF chambers for additional purification. Now, most of the models come with the combination RO + UV + UF technologies to ensure that the water is 99% free from bacteria and virus. Have a look at the below models that with RO UV UF Combination.

Kent Grand Plus (Amazon Link – http://amzn.to/2vNuihO)

Livpure Pep Pro++ (Amazon link – http://amzn.to/2fqNER3)



can you provide the detailed digrame of parts used in aquaguard uv+uf. so that i can myself service the same and if needed replace the parts.

thanks in anticipation.



The TDS of our boring water is 560 mg/ltr.Which is the best purifier(Ro/UV/UF) to use without affecting the required/essential minerals?And what should be the TDS of a healthy water?

Kitchenarena Team

If the TDS of the water is above 400ppm, you have to opt for an RO water purifier that comes with a TDS Controller/Mineralizer. Now, most of the RO water purifiers come with UV/UF combination for providing additional safety. Check out these posts to know more about TDS



Is whirpool Minerala 90 Platinum RO Water Purifier – 8.5 L (8.5 Ltr) filter good? We have Pune corporation water.

What will be the maintenance of RO water purifier.

Thanks in advance for your help!

Kitchenarena Team

The water purifier you have mentioned is good and is suitable for water having TDS levels up to 2000ppm. The maintenance cost will be around Rs.3000 – 4000 for most of the RO water purifier models. It is better to check the TDS level in your water source as you get corporation the TDS levels might be already good. If the TDS levels are low, you can simply opt for a UV UF water purifier.


Hi, Your blog is so informative. I’m from Hyderabad and the water we use is of tds level around 320 to 350 and it’s not salty and clear municipal water. Please suggest me, Can I use Aquaguard Crystal Plus UV water purifier.

Thank you,

Kitchenarena Team

Aquaguard Crystal Plus UV is the right choice for you as the TDS levels in your water are good. But, this Aquaguard model does not have a storage tank. In case of power cut, you won’t get water. You can also have a look at Kent Maxx UV that comes with a 7-litre storage tank.


what is ur opinion about Pureit Advanced (RO + MF) 5 L RO + MF Water Purifier (White)
and kindly helpo me to understand MF .


Kitchenarena Team

Most of the reverse osmosis water purifiers are equipped with either UV/UF or MF for backup purpose and to make sure that the water is 100% free from the contaminants.

Also, these RO water purifier comes with a TDS controller and a little bit of water is directly sent through the UV or UF chamber to maintain the natural minerals in the water.

MF means microfiltration which is similar to the ultrafiltration.


Hi , does UF filter has any use of it , if the water first passed through RO first and then to UF filter

Biswajit Parida

Our drinking water has TDS of around 350 mg/L, but the hardness is little bit high, as evidenced from the settling in the boiled water and also from the scaling on buckets and taps in the bathroom. Which type of water purifier should be used?

Kitchenarena Team

In such condition, you have to opt for an RO water purifier that comes with a TDS Controller or Mineralizer. We have listed the Popular models in this post. Please have a look (https://www.kitchenarena.in/best-water-purifiers-india/)


In a combo of RO and UV does it mean that we can select one of the two to use simultaneously or whether the purifier will itself use both together? Also, I have borewell water at home so which is the best one suited?

Kitchenarena Team

Both RO and UV will work together. First, the water passes through the RO which eliminates hard metals and most of the bacterium form the water. Then the water passes through the UV chamber for additional purification, just to ensure that the water is 100% free from contaminants. For borewell water, it is better to go with a RO + UV water purifier like Kent Grand Plus, Kent ACE Mineral, Livpure Glo.


Sir minimum and higher range of tds for drinking water

Kitchenarena Team

Please have a look at this article: https://www.kitchenarena.in/total-dissolved-solids/


Hi i am looking for water purifier and in my area water is hard and we also use boring water.. My son falls sick frequently.. What type of ro we shud go for.

Kitchenarena Team

Hi There, If your water source is Hard, you have to go for an RO water purifier that removes the hard metals and salts from the water. It is better to take your water sample to a lab and check the TDS levels and if there any presence of harmful salts in the water. If the TDS level is high and not much harmful metals in the water then you can go with an RO water purifier that comes with a TDS Controller (EX: Kent Grand Plus, Kent ACE Mineral, Livepure RO) If there is presence of a harmful substance in the water, then you can go with an RO water purifier that offers 100% RO water purification + Mineralizer (100% water passes through RO Membrane and Minerals will be added at the end EX: LG RO water purifiers)



The place where I am staying, the TDS level of the tap water is 330. And the water has high levels of arsenic and iron. I am currently using Pureit Marvella UV filter along with an iron guard. Is this filtered water safe for drinking. Or do I need to install an RO filter?

Thank you.

Swatantra kumar verma

without RO filtration ,you can’t use for drinking purpose. Arsenic lable may be dangerous for human health.



Then can you please suggest some good water filter.

Kitchenarena Team

If Arsenic is present in your water source, you have to use an RO Water Purifier that removes the hard metals. Marvella UV cannot remove the dissolved salts from the water, it only removes bacterium.



What is the difference between RO and RO+UV ?
If I’ll get mix water , some time TDS high , some time low… How RO+UV work in that case ?
I read few articles and got to know that RO filter remove essential minerals also so not good for health…

Kitchenarena Team

Most of the RO water purifiers are equipped with UV Bulb for additional or backup purification purpose. Normally, RO is enough to remove all the salts and bacterium. In Most of the Reverse Osmosis water purifiers, 100% water does not pass through the RO membrane, some water will be directly sent to UV Chamber, this is done to retain the natural minerals in the water. In Some models, all the water will pass through RO membrane and in the end minerals will be added. Please have a look at the below articles to know more information.



We get borewell water mixed with municipal water for drinking purpose. Should I go for water purifier or RO. Also, I have shortlisted Aquaguard Geneus and LG puricare model. Kindly suggest the brand ( can be other than this) and model I need to purchase.

Kitchenarena Team

RO is also a water purifier. The RO water purifiers should be used in the places where the TDS levels in the water are high. If the TDS levels in the water source is below 300ppm, then you can go with a simple UV or UF water purifier. The Purification process is almost same in most of the RO water purifiers. It is always a good idea to go for the brand that provides quick support at your place.


Hi Chaitanya,
I am in chennai and my water TDS level (1000+) and salt is very high (some time water will come like brown yellow colour) Kindly advise which is the best water purifier and Cost effective. Which are the specialities is required compulsory.

Kitchenarena Team

TDS 1000 is very high and the water is not suitable for consumption. In Such cases, you have to opt for an Reverse Osmosis water purifier. The RO water purifiers are capable of removing the dissolved salts, hard metals and other bacterium from the water. The Annual Maintenance cost will be around Rs.4000 for an RO water purifier. It also depends on the TDS levels in your water and water usage. Please checkout the below RO water purifier models.

Kent Grand Plus (Amazon Link – http://amzn.to/2vNuihO)

Kent ACE Mineral (Amazon Link – https://amzn.to/2LKalx7)

Pureit Mineral Classic (Amazon Link – http://amzn.to/2qBeID6)

Livpure Glo (Amazon Link – http://amzn.to/2qKKpa4)

Bluestar Majesto (Amazon Link – http://amzn.to/2scSxVK)

Aquaguard Geneus (Amazon Link – http://amzn.to/2wiybuY)


Which brand of water purifier(RO+UV+UF)(Dr Aquaguard, Kent…. etc) is best .


which water purifier is required for iron rich water?


Sir, I used borewell water it contains 420ppm. which water purifier you will suggest.

Kitchenarena Team

For Borewell water, it is better to go with an RO water purifier that comes with a TDS Controller.


I want to know which uv uf filter separate the pesticides and harmful chemicals from water.

Kitchenarena Team

All the UV water purifiers are capable of killing the bacteria and virus while the UF water purifiers can remove pesticides and other dissolved pollutants like bacterium and cysts, it cannot remove dissolved salts from the water. So, it is better to opt for an RO water purifier if there are harmful chemicals in the water source.

Bhaswant Inguva

Thanks, Chaitanya for the pretty informative post. Can you help me understand the advantage of larger pores in UF when compared to RO?I’m trying to see if my water purifier has RO does it require UF again?

Kitchenarena Team

RO is better than UF. Ultrafiltration water purifiers have larger pores than RO and they cannot remove the dissolved salts from the water. In Most of the RO water purifiers a part of the water will not pass through the RO membrane and directly goes through UV/UF. This is done to maintain the TDS levels in the water. So, it is better to opt for a water purifier that comes with RO + UV/UF combination.


Hi, is tds controller and mineraliser both are same?

Kitchenarena Team

No, They are different. Please check out this article to know the difference.



Hi Chaitanya,

Your blog is pretty informative. I would like to know which purifier will suit 130PPM TDS level in water. I am getting multi source water and TDS varies often. Highest i have observed is 130PPM.

Kitchenarena Team

The TDS levels in your water source is good i.e. 130 PPM. TDS Levels above 500 is not good. In that case, you need to opt for an RO water purifier. For TDS levels below 400ppm, UV + UF water purifier is good. Checkout Kent Maxx 7 litre UV + UF water purifier (Amazon Link – https://amzn.to/2qpDOma)


Thanks Chaitanya. I have bought Kent Pearl which is RO + UV + UF + TDS Controller, since TDS level goes above 200 PPM at times.

Nitin sangtani

Hello sir,
A couple of days back i got to hear about a company named as wave which manufactures water purifiers. It has this option of RO + UV + UF and is available under 10,000 rs.
Any suggestions, should i go for it or stick to my previous ro purifier brand i.e. kent, which is priced at 16000 rs. ??

Kitchenarena Team

What about the Service Quality provided by that brand? Does that water purifier has a TDS Controller/Mineralizer? Can you gather more information about the Purification process of that water purifier. Also, Kent ACE Mineral is a good water purifier and is priced around Rs.13000.


Hi please suggest me which is better AMONG RO+UV+TDS CONTROLLER AND RO+UF+TDS CONTROLLER

Kitchenarena Team

There is no much difference. In General, RO is enough to remove all the dissolved salts and the bacterium from the water. UV/UF are employed for the backup purpose. Both the combinations you have mentioned are good. RO + UV is the popular one.


Sir blue mount company has a feature of alkaline instead of tds controller in what way is it beneficial,and I think my tap water tds level is below 300

Kitchenarena Team

I have Just seen Blue Mount website and there is no much information about the purification process. Actually, RO and Alkaline Purification are different water purification technologies. Alkaline (Electrolysis) water purifiers give water that is less acidic and rich in calcium, potassium and other Alkalizing compounds.


Hello Chaitanya
I am from Kolkata
Considering to purchase a water purifier
I have read that RO removes essential minerals from water such as magnesium and calcium due to which consuming RO purified water is harmful for your health in the long run.
New purifiers have come up in the market which claim to add back necessary minerals. Can you please suggest which would be best considering all pros and cons (UV / UF / RO / etc) to the health?
I need one which will provide only healthy water for my family and will not cause any side effects to the health in the long run.

Kitchenarena Team

RO water purifiers with TDS Controllers / Mineralizers retains natural minerals in the water and the required minerals will not be lost. If the TDS levels (Salt levels) in your water are high, you can install an RO water purifier otherwise no need for an RO water purifier. For Low TDS water, UV + UF water purifiers will do the job. I have listed all the Top RO, UV + UF water purifiers in this Post. Please have a look. Go for the brand that provides good support at your place.



I get corporation water which has low TDS. I had ordered for a 6 Lt. UV+UF water filter but by mistake the Seller(Amazon) has sent a RO+UF water filter.
I can return it but I am not sure whether I will be paid the full transportation charges as I may have to Insure it also. More than that I
I want to know what will be the approximate AMC maintenance cost difference between RO+UF and UV+UF filters.

Kitchenarena Team

RO membrane is costlier than a UV bulb or UF membrane. So, the maintenance cost for RO water purifiers will be around Rs.3000 – Rs.4000 per year. For UV + UF water purifiers, AMC will be around Rs.1000 – Rs.1500.


In my home(Ghaziabad) we are getting water supply which has TDS around 190-200. I called the Kent agent and as per him TDS should
be less then 100. should RO required or UV+UF is good? Please suggest.


If the tds level is less than 200ppm then only go for UV water purifiers.
I am using Alfaa’s Ewater – UV water purifier. I am very happy with their product quality as well as after-sales service.

Kitchenarena Team

Water having TDS levels below 300 is considered as excellent and there is no need for an RO water purifier if your TDS levels are around 200 ppm. A UV + UF water is good and is capable of removing the bacterium and other suspended impurities from the water. You can find more about the TDS levels here: https://www.kitchenarena.in/total-dissolved-solids/


Thanks for quick reply.
can you please suggest best UV+UF water purifier.

Kitchenarena Team

Check out the below models

Kent Maxx (Amazon Link – http://amzn.to/2ddbmS1) (Flipkart link – http://fkrt.it/ZgkOHuuuuN)

Aquaguard Superb (Amazon Link – http://amzn.to/2wj9fUl) (Flipkart Link – http://fkrt.it/WlmLm!NNNN)

Blue Star Pristina UV (Amazon Link – http://amzn.to/2x0bklq)


Our is ground water with tds 270/- checked by one kent sales person.
I am living in rented oremised and when i change house the tds could increase
If i go for ro + uv+uf from LG is it ok or will the water be depleted of minerals.
Or should i go for aquagard genius
Pl suggest i am confused

Kitchenarena Team

LG RO water purifiers are good and they come with a Mineral Booster that retains essential minerals like calcium and magnesium. If you are not sure about the TDS levels in the water, you can opt for LG water purifiers. You can find more details about the LG water purifiers here: https://www.kitchenarena.in/lg-water-purifiers-price/


Hi Chaitanya,
In HYD using boor water tds(800 to100) it’s changes avery time now i am thinking to by Dr. Aquaguard Magna NXT HD RO+UV this is god for me / i have to go RO+UV+UF also as you maintended above answers i understand that RO+UV good for me can you please suggest. Thanks and advance.

Kitchenarena Team

Aquaguard Magna NXT HD RO+UV is a good water purifier and it works with all kinds of water sources having TDS levels up to 2000ppm. Also, there is a mineral guard to retain the natural minerals in the water. If Aquaguard provides good service at your place, you can go with it.


Thanks for the advice. yes we have best service for AQUAGUARD in my location
One again thanks. Have good time.

Kitchenarena Team



How to check TDs level in water. I am staying in Bangalore and using supply as well as borewell water. So please refer me a budget friendly purifier.

Kitchenarena Team

You can use a simple TDS meter to check the TDS levels in your water. You can also contact Kent, Puriet or any other brand service personnel and request them to check the TDS levels in your water. Normally, Groundwater in most places has high TDS levels. Have a look at some of the budget RO water purifiers.

Pureit Mineral Classic (Amazon Link – http://amzn.to/2qBeID6) (Flipkart Link – http://fkrt.it/fF~XoTuuuN)

Livpure Glo (Amazon Link – http://amzn.to/2qKKpa4) (http://fkrt.it/fCNpeTuuuN)

Kent Maxx – Suitable for Low TDS water (Amazon Link – http://amzn.to/2ddbmS1) (Flipkart Link – http://fkrt.it/ZgkOHuuuuN)


Which type of water purifier should we use in home. As TDS of MC water is around 350. I am living in Ludhiana (Punjab)India

Kitchenarena Team

No need to go with an RO water purifier as the TDS levels in your water source is good. You can simply opt for a UV/UF water purifier. The UV+UF water purifier will be suitable for low TDS water and they will kill, remove bacterium, virus, and cysts from the water. The Maintenance cost for these models will also be low when compared with RO water purifiers.


My TDS is around 100 so what is the water purifiers?
How is dr aqua guard classic +

Kitchenarena Team

Aquaguard Classic Plus is the right choice for Low TDS water. But, this model does not have a storage tank and there will be no water when there is power outage. You can also have a look at Kent Maxx.

Amazon Link (http://amzn.to/2i7dCcX)

Flipkart Link (http://fkrt.it/UggqhTuuuN)


I installed RO : Kent Pearl in 2013. (Almost 4 years now)
It has RO + UF + UV with TDS Control, Auto-Flushing System along with UV fail Alarm. In addition to that I have installed 2 pre-filters (in series) which I change every 6 months).

Periodically, I also do the basic cleaning of filters by removing them and attaching water pipe in reverse direction & taping method.
My RO is working fine with Input Water TDS 268-300 & output TDS around 68-70 (Today I adjusted it to 200)
What I want to know is that although the unit seem to be working fine, should I change any filters (or UV lamp) inside the unit ?

Kitchenarena Team

As the TDS levels in your water source are good, there is no need to change the filters. Also, there is UV Fail Alarm that notifies about UV Bulb failure. As you are using Machine since 4 years, it is better to get your water quality checked by Kent Service Personnel.


Dear Mr. VS Chaitanya
Thanks for your prompt response.
I have a TDS meter with me. Apart from TDS is there anything else I need to get checked for water quality ?



Would like to know which filter i should use for bathing and brushing , as our water has smell of drainage water.

Kitchenarena Team

I have no idea about water purifiers that are suitable for bathing purpose. The water purifiers I have mentioned in this site are suitable for purifying drinking water only.


In my water supply the TDS is only 170 but the water is smelly and muddy. Is there any problem if I go for UF

If UF does all the work of of UV then why the combination of UV +UF which is expensive.

Kitchenarena Team

UV + UF combination works great for low tds water. UV can kill all the bacterium and virus. It is employed along with UF for backup purpose. Only the RO water purifiers are expensive. You can have a look at Kent Maxx. It is priced around 7k.


i have water source DELHI Jal board and i choosing classic + aquaguard is it ok and what if choose any ro water purifier

Kitchenarena Team

The water purifier you have mentioned is suitable for Low TDS water having TDS levels below 200 ppm. Normally, Government Supplied water is already treated. So, UV/UF water purifier is good.


is there any method to check TDS level at home? I get ground water from 360 feet boring water dosnt taste bad , all it has bad smell that too goes away after 1/2 hours of storage . what type purifier will suite ?

Kitchenarena Team

In Most Places, the Ground water will have high TDS levels. You can call any water purifier brand customer support and get the TDS levels in your water checked at your home.


Hi, I am staying in faridabad sector 31. Water in faridabad is very hard. I heard (not sure) the TDS is around 3000 ppm.
could you please advice:
1. which water purifier is best.
2. I read about RO/UV and UF types and differences. But what about the combination of two types? Which combination tyoe should I go for?

Kitchenarena Team

TDS levels 3000ppm is very high. Most of the Brands make water purifiers that work only with water having TDS levels up to 2000 ppm. Some of the RO water purifiers come with UV / UF combination. Ultraviolet or Ultrapurification are employed along with RO just for the backup purpose. It is better to request Kent/Aquaguard or any other brand technician to visit your home and get the TDS levels checked.


Hi, i am staying in gk2 in New Delhi where we get Sonia Vihar water and it’s TDS is around 90 so what should we buy??? RO OR UV. But I am bit confused that uv will deactivate germs not kill them. Pls. Help???


For T.D.S levels above 500 you may choose RO with U.V , but for anything less than 440 levels you need only U.V . Ideally healthy water should have TDS levels of atleast 220 , so if you decrease this using RO it only leads to drinking water depleted of essential minerals

Kitchenarena Team

No need for an RO water purifier if the TDS levels are low. Some of the UV water purifiers come with UF combination. So, the bacterium will be completely removed from the water. Check out the below models.

Kent Maxx (Amazon Link – http://amzn.to/2ddbmS1) (Flipkart Link – http://fkrt.it/ZgkOHuuuuN)
Aquaguard Superb (Amazon Link – http://amzn.to/2wj9fUl) (Flipkart Link – http://fkrt.it/WlmLm!NNNN)