It’s no secret that drinking good water is essential for optimal health. Hydration is necessary for a healthy lifestyle, and drinking tap water can lead to high blood pressure, kidney stones, and other issues. This is because tap water carries harmful chemicals and metal particles like lead, which are harmful to your health. Water purifiers are the answer to this problem. These purifiers clean water by eliminating germs, bacteria, lead, and other pollutants while balancing the pH level. If the TDS of your water is 200 to 1000ppm, you should choose a RO water purifier. Only an RO water purifier can remove metal particles from hard saltwater.
What’s TDS Level?
The total dissolved solids (TDS) level of water is a measure of its quality. TDS is a measurement of the number of dissolved substances in water and is represented by PPM. The ideal water has a TDS of around 50-150ppm.
Water filter or water purifier?
Water purifiers are often confused with water filters, but they are two distinct devices. A water filter separates particles and impurities from water, making it clean and safe to consume and use for other purposes such as washing, cleaning, and cooking. Water purifiers take it one step further by removing biological pollutants (viruses and germs), hazardous chemicals, metals, solid particles, and toxic gases from the polluted water. Reverse osmosis (RO), distillation, and UV treatment are all used by water purifiers to remove contaminants.
Best 9 RO Water Purifiers with Price List
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Blue Star Aristo RO+UV+UF 7-Liter Water Purifier
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Rs. 9,999
Rs. 13,900 -
Eureka forbes Aquasure From Aquaguard RO+UV+MTDS
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Rs. 10,499
Rs. 16,000 -
HUL Pureit Eco Water Saver Mineral RO+UV+MF
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Rs. 13,299
Rs. 22,500 -
KENT Grand RO Water Purifier RO+UV+UF+TDS Control
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Rs. 14,999
Rs. 19,500 -
Eureka Forbes Aquaguard Ro+Uv E-Boiling + Mtds
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Rs. 15,499
Rs. 23,000 -
KENT Grand+ 9-litres Wall Mountable RO + UV + UF + TDS Controller
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Rs. 17,690
Rs. 20,500 -
HUL Pureit Copper+ Mineral RO + UV + MF 7 stage Copper Water Purifier
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Rs. 21,490
Rs. 25,990 -
AO Smith Z9 Hot+ RO+SCMT
—
Rs. 25,299
Rs. 32,500 - Blue Star Excella 6 L RO + UV + UF Water Purifier —
To make things easier for you, we’ve compiled a comparison table for the best water purifiers:
Brand |
Tank Capacity |
Warranty |
TDS controller |
Technology |
Material |
Electricity Usage (watts) |
KENT Grand+ |
9 liters |
1 year |
Yes |
RO + UV + UF |
Plastic |
60 |
HUL Pureit Copper |
8 liters |
1 year |
Yes |
RO |
Plastic |
55 |
Kent Grand |
8 liters |
1 year |
Yes |
RO + UV + UF |
Plastic |
60 |
Eureka Forbes Aquasure |
7 liters |
1 year |
No |
RO + UV |
Plastic |
30 |
Eureka Forbes Aquaguard Aura |
7 liters |
1 year |
No |
RO + UV + Active Copper & mineral guard |
Plastic |
20 |
HUL Pureit Eco Water Saver |
10 liters |
1 year |
No |
RO+UV+MF |
Plastic |
55 |
Blue Star Aristo |
7 liters |
1 year |
No |
RO+UV+UF |
Plastic |
36 |
AO Smith Z9 Hot+ |
10 liters |
1 year |
No |
RO |
Plastic |
36 |
Blue Star Excella |
6 liters |
1 year |
No |
RO+UV+UF |
Plastic |
48 |
1. Best Multi-Purification Purifier – KENT Grand Plus – Check Discount Price

- Uses multi-purification methods.
- Has UV disinfection.
- Overflow protection.
- Auto start and shut down.
- No detachable storage tank.
- No Child Lock.
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Best for Large Household Use – HUL Pureit Copper – Check Discount Price

The power consumption is 55 watts, and it comes with a 1-year warranty.
- Contains water level, filtration change, and low-pressure indicator.
- Uses UV LEDs.
- Auto shut off.
- Dual dispensing.
- Free installation.
- Customer service isn’t the best.
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Best User Convenience Purifier – Kent Grand – Check Discount Price

- Has a water level indicator.
- Multiple purifying methods.
- Built-in TDS controller.
- No pre-filter.
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Best Durable Purifier – Eureka Forbes Aquasure – Check Discount Price

- UV purification.
- Smart LED indicators.
- Auto Start and shut.
- Lacks TDS controller.
- Lacks hot or cold dispensers.
- No child lock.
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Best Easy to Install Purifier – Eureka Forbes Aquaguard Aura – Check Discount Price

- UV boiling technology.
- Active copper technology.
- Mineral guard technology.
- Attractive design.
- Easy installation.
- Lacks TDS controller.
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Best for Water Conservation – HUL Pureit Eco Water Saver – Check Discount Price

- High capacity.
- Free installation.
- Helps conserve water.
- Adds essential minerals.
- No child lock.
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-
Best Budget-Friendly Water Purifier – Blue Star Aristo – Check Discount Price

- Triple-Layered protection.
- Tank full indicator.
- Free Installation.
- Copper impregnated activated carbon.
- Inexpensive.
- Auto start and off.
- Lacks TDS controller.
- No detachable storage tank.
- Lacks cold or hot water dispensers.
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Best Large Storage Purifier – AO Smith Z9 Hot – Check Discount Price

- High capacity.
- 8 steps of purification.
- Offers filtered hot water.
- Can be a bit expensive.
- Lacks TDS controller.
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Most Compact Purifier – Blue Star Excella – Check Discount Price

- Triple-layer purification.
- Compact and easy to handle.
- Contains active carbon.
- Comparatively small capacity.
- No child lock.
- Lacks TDS controller.
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The Most Popular Water Purifier Brands in India
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KENT
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Aquaguard
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HUL Pureit
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AO Smith
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Eureka Forbes AquaSure
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Blue Star
Buying Guide: What to Look for When Buying a Water Purifier?
Before you buy a water purifier, there are a few things you should know to help you make an informed buying decision. Please read our Best Water Purifiers Buying Guide!TDS level of your tap water
The very first thing you should do before buying a water purifier is to get your water checked for impurities, hardness, and TDS. TDS stands for total dissolved solids. After finding out your water quality, you can easily decide which water purifier can suit you best. Take note; not every purifier is able to handle high TDS levels.RO Purification Technology
According to your water type and quality, you can look for a suitable purification technology. Certain models come with purification technology using 7 or 8 steps.Filtration Capacity
For this factor, you should decide on how much water is consumed in your household in a day so that you can search for a water purifier accordingly. Large households should opt for water purifiers with at least 8-liters of storage.Durability & Materials
Water purifiers usually come with storage tanks made of food-grade plastic or stainless steel. Purified water might catch bacteria or germs in a plastic water purifier. Stainless-steel storage tanks provide more extended periods of protection against the growth of bacteria and germs than plastic storage tanks.Filters
Always choose high-quality and reliable filters. The health of your household is at risk. So, don’t risk your family’s health by opting for a purifier with a low-quality filter.Warranty and Price
Look for a purifier that is affordable and has a reasonable warranty period. An extended warranty for your product protects your investment. When selecting a model, seek a long-term warranty. Many purifiers come with at least a 1-year of warranty.Cleaning & Maintenance
Always look for a water purifier that is easy to install and manage, and clean. Sanitization is necessary to obtain optimum results from your water purifier. Some brands offer free services to ensure your water purifier continues to function as long as possible.TDS Controller
TDS controller is an essential feature to look for in a water purifier to regulate and monitor the TDS of the water.Water-Saving features
The water purifier must have a water-saving feature because RO purifiers can waste a lot of water. So do look for a storage tank to save your water. Hul Pureit and Eureka have units that help save water.How Do the Reverse Osmosis Water Purifiers Work?
RO water purifier uses a semi-permeable membrane to filter water. The water is pumped through the RO membrane by a water pump, which pressurizes the hard water to pass through. During this procedure, the dissolved metals and solids like arsenic, fluoride, lead, chlorine, nitrates, and sulfates are captured and stuck to the RO membrane, filtering out the water and leaving the impurities behind.The Water Purification Process and Key Terms Explained
Sediment Filter
Sediment filters trap and eliminate impurities from water like dirt, sand, and other solid particles.Activated Carbon Pre-Filter
An activated carbon filter eliminates gasses, chemical vapors, and odor compounds through filtration. It is usually used in air purifiers to absorb pollutants to breathe fresh, clean air.RO Membrane
Reverse osmosis is like a filter that drives all water particles through a very tiny semi-permeable membrane. By forcing water through this semi-permeable membrane, all particles too large to follow the water’s path are filtered out.UV Filter
UV filters are substances that soak in or prevent UV radiation.UF Membrane
It is a type of membrane filtration in which water is pressed against a semipermeable membrane by hydrostatic pressure.TDS Controller
A TDS controller is a device used to monitor the TDS of the water.Mineralizer
When water is purified, the minerals are also removed along with the impurities which influence the flavor of the water. To restore the taste, purifier companies add a mineralizer cartridge to the appliance.Carbon Post Filter
After purifying the water with the RO and UV purification stages, a layer of carbon filter, known as the Post-RO Carbon filter, is added. This filter is commonly used at the end of the water purification process. It aids in improving the water’s quality and functions as a polisher, making pure water taste even better.SCMT
Silver Charged Membrane Technology is a secondary purification stage that effectively eliminates most pollutants and germs after RO purification. This technology outperforms UF, MF, and UV.Storage Tank
Storage tanks are containers that hold purified water filtered by a filtration system so you can utilize it according to your needs.Installation of the RO Water Purifier
Here’s what goes into installing a RO Water Purifier:- To install the RO Water cleaner, clean the area where you want to install it.
- Turn off the cold-water supply faucet. The water supply to the house must be switched off if the existing cold-water valve is inoperable.
- Drill a 5/16 diameter hole through the wall of the pipe at a location about six inches above the trap to connect the drain line connection to cold water.
- The drain clamp should then be attached, with the hole in the clamp aligned with the hole in the pipe. Align the holes while tightening the clamp.
- The faucet base must have enough flat space to allow the base nut to be securely tightened.
- After the hole in the sink has been bored, the faucet stem can be put into the hole. Position the faucet appropriately and tighten the lock washer and nut on the faucet stem.
- Finally, attach a 1/4″ tube to the bottom of the faucet stem and tighten it.
Cleaning & Maintenance of RO Water Purifiers
For optimal performance, it is necessary to maintain your RO water purifiers. Regular cleaning will keep the water pure and considerably decrease the chances of malfunction. Some significant aspects to follow regarding cleaning and maintenance are mentioned below:- It would help if you replaced all filters once a year.
- Ensure that the pipes are cleaned and sanitized every two years.
- You should purchase replacement parts when necessary.
- The RO membranes should be replaced once a year.
- Monitor the pressure nozzle frequently.
- Look out for leakages or drips in the pipes.
- Clean and sanitize the water storage tanks.