By technology

Best RO Water Purifiers in India (2026)

20 products comparedPrices checked Sep 2026Independent · affiliate-funded

#1 Top pickAO Smith Z9 Green RO₹33,99019% offScore 9/10
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#2 Runner-upKENT Grand Plus₹16,49920% offScore 8.9/10
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#3 Also greatLG PuriCare WW182EP₹31,99018% offScore 8.8/10
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Reverse osmosis is the only domestic technology that lowers TDS. Everything else in a purifier — UV, UF, carbon, copper, alkaline — solves a different problem, and none of them touch dissolved salts, hardness, fluoride, nitrate or heavy metals. So if your supply is borewell-fed, tanker-fed, blended, or measures above roughly 300 ppm, an RO is not a preference. It is the only category that will work.

The corollary matters just as much, and almost nobody selling RO will say it: if your water is treated municipal supply below 200 ppm, buying RO is a mistake. You will pay more, waste two to three litres for every litre you drink, strip out calcium and magnesium, and end up with flat-tasting water — to solve a problem you do not have. Test with a ₹300 TDS meter before you spend ₹16,000.

For everyone who genuinely does need RO, four specifications decide the purchase and the rest is marketing. Input TDS rating must exceed your worst seasonal reading with headroom. A TDS controller must be present, or output arrives demineralised. Water recovery decides your monthly bill in a tanker-fed city. And the service network decides whether the unit is still working in year three — which, in this category, is the failure mode that actually happens.

The ranking below weights all four, plus five-year running cost rather than sticker price. Stage counts are deliberately ignored: brands inflate them by counting sediment pads, and a well-built 6-stage unit beats a badly built 12-stage one every time.

Our ranked picks

Filter by price, brand and feature, or sort by price and running cost. Tick Compare on any two to put their specs side by side.

20 water purifiers

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1Compare
🏆 Best Premium / Best Hot WaterAO Smith
AO Smith Z9 Green RO
Hot water on tap, and the best water recovery in the category
9.0/10our editorial score
- RO + SCMT (Silver Charged Membrane Technology) + Mineraliser
- 9 litres storage tank
- Suitable up to 3000 ppm input TDS
- Water recovery: Up to 2x more than conventional RO (Advanced Recovery Technology)
- TDS controller — retains essential minerals
- Hot & ambient water dispensing
Worth it for the hot water alone
“Tanker water here tests between 900 and 1,400 ppm depending on the month and this handles all of it. The 80 degree setting for tea has genuinely changed our morning routine. Expensive, no regrets.”
— Priya, GurugramVerified purchase+1 more owner report
₹33,99019% off
M.R.P. ₹42,000 Save ₹8,010
Running cost: ≈ ₹4,500/yr
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Indicative price, verified 2026-08-01. Confirm on the marketplace before buying.
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2Compare
🏆 Best OverallKENT
KENT Grand Plus
The default recommendation for Indian borewell water
8.9/10our editorial score
- RO + UV + UF + TDS Controller
- 9 litres storage tank
- Suitable up to 2000 ppm input TDS
- Water recovery: Up to 50% (Save Water technology)
- TDS controller — retains essential minerals
- Warranty: 1 year warranty + 3 years free service
Finally water that does not taste salty
“Our borewell tested at 1,150 ppm and every cheaper purifier we tried gave brackish water. Output now measures around 90 ppm on my own TDS pen. Installation took an hour and the technician actually explained the TDS controller setting.”
— Rakesh, JaipurVerified purchase+1 more owner report
₹16,49920% off
M.R.P. ₹20,500 Save ₹4,001
Running cost: ≈ ₹3,500/yr
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3Compare
🏆 Best Tank HygieneLG
LG PuriCare WW182EP
Stainless-steel tank and self-sterilising UV care
8.8/10our editorial score
- RO + Dual Protection Sterilising Care UV
- 8 litres storage tank
- Suitable up to 2000 ppm input TDS
- Warranty: 1 year comprehensive, 4 years on select parts
The steel tank is the whole point
“Our previous purifier's plastic tank developed a smell within two years in this humidity. Two years with the LG and the water still tastes of nothing at all, which is exactly what you want. Takes up counter space but worth it.”
— Ananya, KochiVerified purchase
₹31,99018% off
M.R.P. ₹39,000 Save ₹7,010
Running cost: ≈ ₹4,400/yr
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4Compare
🏆 Best Service NetworkAquaguard
Aquaguard Delight NXT
Aquaguard's best-selling all-rounder, now with active copper
8.7/10our editorial score
- RO + UV e-boiling + UF + MTDS + Active Copper
- 6 litres storage tank
- Suitable up to 2000 ppm input TDS
- TDS controller — retains essential minerals
- Copper enrichment
- Warranty: 1 year comprehensive
Service is the reason to buy Aquaguard
“Third purifier in twelve years and the first where service has not been a fight. Metro water here is brackish in summer and the output stays sweet. Tank is small, so during summer cuts we fill bottles in advance.”
— Meenakshi, ChennaiVerified purchase+1 more owner report
₹17,99023% off
M.R.P. ₹23,500 Save ₹5,510
Running cost: ≈ ₹4,200/yr
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5Compare
AO Smith
AO Smith X7
AO Smith engineering without the hot-water premium
8.6/10our editorial score
- RO + SCMT + Mineraliser, 8-stage
- 7 litres storage tank
- Suitable up to 2000 ppm input TDS
- Water recovery: Advanced Recovery Technology
- TDS controller — retains essential minerals
- Warranty: 2 years on select components
₹23,49022% off
M.R.P. ₹30,000 Save ₹6,510
Running cost: ≈ ₹4,000/yr
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6Compare
Aquaguard
Aquaguard Aura
Copper plus alkaline in Aquaguard's premium domestic unit
8.5/10our editorial score
- RO + UV e-boiling + UF + MTDS + Active Copper + Alkaline
- 7 litres storage tank
- Suitable up to 2000 ppm input TDS
- TDS controller — retains essential minerals
- Copper enrichment
- Alkaline / pH enhancement
₹25,49020% off
M.R.P. ₹32,000 Save ₹6,510
Running cost: ≈ ₹5,200/yr
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7Compare
🏆 Best Value Hot WaterHavells
Havells Aqua S
Hot and ambient dispensing at a sane price
8.5/10our editorial score
- RO + UV + Mineral fortification, 7-stage
- 6.5 litres ambient + hot tank storage tank
- Suitable up to 2000 ppm input TDS
- TDS controller — retains essential minerals
- Hot & ambient water dispensing
- Warranty: 1 year comprehensive + 3 years on RO membrane
₹21,49022% off
M.R.P. ₹27,500 Save ₹6,010
Running cost: ≈ ₹3,700/yr
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8Compare
KENT
KENT Pearl RO
Counter-top KENT with a UV-sterilised tank
8.4/10our editorial score
- RO + UV + UF + TDS Controller
- 8 litres storage tank
- Suitable up to 2000 ppm input TDS
- Water recovery: Up to 50%
- TDS controller — retains essential minerals
- Warranty: 1 year + 3 years free service
₹17,99018% off
M.R.P. ₹22,000 Save ₹4,010
Running cost: ≈ ₹3,600/yr
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Indicative price, verified 2026-08-01. Confirm on the marketplace before buying.
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9Compare
🏆 Safest Filter-Life EnforcementPureit
Pureit Copper+ RO
HUL's copper RO with an enforced filter-life cut-off
8.4/10our editorial score
- RO + UV + MF + Copper Charge technology
- 8 litres storage tank
- Suitable up to 2000 ppm input TDS
- TDS controller — retains essential minerals
- Copper enrichment
- Warranty: 1 year
The shut-off is annoying and I am glad it exists
“Ran out of water for two days because I ignored the warnings. Entirely my fault. My previous purifier had a blinking light I ignored for a year, which is worse. Water quality has been consistent for 18 months.”
— Deepak, LucknowVerified purchase
₹15,99927% off
M.R.P. ₹22,000 Save ₹6,001
Running cost: ≈ ₹3,800/yr
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10Compare
KENT
KENT Marvel RO Water Purifier
RO + UF + TDS Control water purifier with a 8 L tank
8.4/10our editorial score
- RO + UF + TDS Control
- 8 litres storage tank
- Suitable up to 2000 ppm input TDS
- TDS controller — retains essential minerals
₹11,59941% off
M.R.P. ₹19,500 Save ₹7,901
Running cost: ≈ ₹3,350/yr
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Indicative price, verified 2026-09-20. Confirm on the marketplace before buying.
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11Compare
KENT
KENT Marvel Plus-B
RO + UV + UF + Copper + TDS Controller water purifier with a 8 L tank
8.4/10our editorial score
- RO + UV + UF + Copper + TDS Controller
- 8 litres storage tank
- Suitable up to 2000 ppm input TDS
- TDS controller — retains essential minerals
- Copper enrichment
₹12,50042% off
M.R.P. ₹21,500 Save ₹9,000
Running cost: ≈ ₹3,350/yr
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12Compare
KENT
KENT Prime TC
High-throughput KENT for large families and small offices
8.3/10our editorial score
- RO + UV + UF + TDS Controller
- 9 litres storage tank
- Suitable up to 2000 ppm input TDS
- TDS controller — retains essential minerals
- Warranty: 1 year + 3 years free service
₹15,49021% off
M.R.P. ₹19,500 Save ₹4,010
Running cost: ≈ ₹3,400/yr
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Indicative price, verified 2026-08-01. Confirm on the marketplace before buying.
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13Compare
Pureit
Pureit Marvella RO
Pureit's premium unit with a smart-sensing display
8.3/10our editorial score
- RO + UV + MF, 6-stage
- 8 litres storage tank
- Suitable up to 2000 ppm input TDS
- TDS controller — retains essential minerals
- Warranty: 1 year
₹20,99022% off
M.R.P. ₹27,000 Save ₹6,010
Running cost: ≈ ₹4,100/yr
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Indicative price, verified 2026-08-01. Confirm on the marketplace before buying.
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14Compare
🏆 Best Service ExperienceNative by Urban Company
Native M1 by Urban Company
Service-first purifier with app-scheduled maintenance
8.3/10our editorial score
- RO + UV + Mineral cartridge
- 7 litres storage tank
- Suitable up to 2000 ppm input TDS
- Water recovery: High-recovery design, low reject ratio
- TDS controller — retains essential minerals
- Warranty: 1 year
₹16,99915% off
M.R.P. ₹20,000 Save ₹3,001
Running cost: ≈ ₹2,800/yr
Indicative price, verified 2026-08-01. Confirm on the marketplace before buying.
Read full review →
15Compare
KENT
KENT Grand RO Water Purifier
RO + UF + TDS Control water purifier with a 8 L tank
8.3/10our editorial score
- RO + UF + TDS Control
- 8 litres storage tank
- Suitable up to 2000 ppm input TDS
- TDS controller — retains essential minerals
₹13,09943% off
M.R.P. ₹23,000 Save ₹9,901
Running cost: ≈ ₹3,350/yr
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Indicative price, verified 2026-09-20. Confirm on the marketplace before buying.
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16Compare
KENT
KENT Ace RO Water Purifier
RO + UF + TDS Control water purifier with a 8 L tank
8.3/10our editorial score
- RO + UF + TDS Control
- 8 litres storage tank
- Suitable up to 2000 ppm input TDS
- TDS controller — retains essential minerals
₹14,09939% off
M.R.P. ₹23,000 Save ₹8,901
Running cost: ≈ ₹3,350/yr
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Indicative price, verified 2026-09-20. Confirm on the marketplace before buying.
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17Compare
KENT
KENT Ace Plus RO Water Purifier
RO + UV + UF + Alkaline + Copper + TDS Control water purifier with a 8 L tank
8.3/10our editorial score
- RO + UV + UF + Alkaline + Copper + TDS Control
- 8 litres storage tank
- Suitable up to 2000 ppm input TDS
- TDS controller — retains essential minerals
- Copper enrichment
- Alkaline / pH enhancement
₹15,59935% off
M.R.P. ₹24,000 Save ₹8,401
Running cost: ≈ ₹3,350/yr
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Indicative price, verified 2026-09-20. Confirm on the marketplace before buying.
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18Compare
KENT
KENT Supreme Plus RO Water Purifier
RO + UV + UF + Alkaline + Copper + TDS Control water purifier with a 8 L tank
8.3/10our editorial score
- RO + UV + UF + Alkaline + Copper + TDS Control
- 8 litres storage tank
- Suitable up to 2000 ppm input TDS
- TDS controller — retains essential minerals
- Copper enrichment
- Alkaline / pH enhancement
₹15,59941% off
M.R.P. ₹26,500 Save ₹10,901
Running cost: ≈ ₹3,350/yr
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Indicative price, verified 2026-09-20. Confirm on the marketplace before buying.
Read full review →
19Compare
KENT
KENT Ace Copper RO Water Purifier
RO + UV + UF + Copper + TDS Control water purifier with a 8 L tank
8.3/10our editorial score
- RO + UV + UF + Copper + TDS Control
- 8 litres storage tank
- Suitable up to 2000 ppm input TDS
- TDS controller — retains essential minerals
- Copper enrichment
₹15,59938% off
M.R.P. ₹25,000 Save ₹9,401
Running cost: ≈ ₹3,350/yr
Buy on Amazon Buy on Flipkart
Indicative price, verified 2026-09-20. Confirm on the marketplace before buying.
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20Compare
Aquaguard
Aquaguard Ritzy NXT
Slim-profile Aquaguard for compact kitchens
8.2/10our editorial score
- RO + UV e-boiling + MTDS + Mineral Guard
- 5.5 litres storage tank
- Suitable up to 2000 ppm input TDS
- TDS controller — retains essential minerals
- Warranty: 1 year comprehensive
₹15,29024% off
M.R.P. ₹20,000 Save ₹4,710
Running cost: ≈ ₹3,900/yr
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Indicative price, verified 2026-08-01. Confirm on the marketplace before buying.
Read full review →

How we chose these

Membrane input rating

2,000 ppm covers the large majority of Indian supply including most borewells. Buy 3,000 ppm only if you have measured above 1,500 ppm — in Jodhpur, Bikaner, Churu, Pali or coastal Tamil Nadu, for instance. Rating below your worst summer reading is how membranes die in five months.

TDS controller

Non-negotiable. It blends a measured amount of UF-filtered water back into the RO output so you land at a pleasant 60-120 ppm instead of a flat 25 ppm, and it lets you re-tune when your supply switches between municipal and tanker in summer.

Water recovery

A legacy RO rejects three litres per litre purified — roughly 16,000 litres a year for a family of four. High-recovery designs such as KENT's Save Water and AO Smith's Advanced Recovery halve that. In a city where you buy tankers, this is a line item, not a talking point.

Five-year running cost

Membrane, UV lamp, pre-filters and labour typically total ₹3,000-₹4,500 a year — which means consumables often cost more than the purifier over its life. We rank on that total, not on the launch price.

Service reachability

Weighted heavily, and decisively so outside metros. A brilliant purifier with no technician in your pin code is a worse purchase than an average one that gets serviced in 48 hours. Phone customer care with your pin code before ordering.

Quick comparison

Best RO Water Purifiers in India (2026) — comparison of key specifications
#	Product	Price	Score	Max input TDS	Best for
1	AO Smith Z9 Green RO	₹33,990	9/10	3000 ppm	Premium kitchens, high-TDS or brackish supply, and households that drink a lot of tea and coffee.
2	KENT Grand Plus	₹16,499	8.9/10	2000 ppm	Families on borewell, tanker or high-TDS municipal supply who want the safest all-round choice.
3	LG PuriCare WW182EP	₹31,990	8.8/10	2000 ppm	Hygiene-focused buyers, humid coastal cities, and anyone who has ever opened a purifier tank and been unpleasantly surprised.
4	Aquaguard Delight NXT	₹17,990	8.7/10	2000 ppm	Buyers who value service reliability and compact design over maximum tank capacity.
5	AO Smith X7	₹23,490	8.6/10	2000 ppm	Buyers who want AO Smith's engineering and water efficiency but do not need hot water.
6	Aquaguard Aura	₹25,490	8.5/10	2000 ppm	Premium buyers who want copper and alkaline options in one well-built unit.
7	Havells Aqua S	₹21,490	8.5/10	2000 ppm	Buyers who want hot water on tap without paying premium-brand prices.
8	KENT Pearl RO	₹17,990	8.4/10	2000 ppm	Renters and anyone who cannot drill walls, but still needs full high-TDS RO purification.
9	Pureit Copper+ RO	₹15,999	8.4/10	2000 ppm	Safety-first households, and anyone who has previously forgotten filter changes.
10	KENT Marvel RO Water Purifier	₹11,599	8.4/10	2000 ppm	A family on borewell, tanker or high-TDS municipal supply
11	KENT Marvel Plus-B	₹12,500	8.4/10	2000 ppm	A family on borewell, tanker or high-TDS municipal supply
12	KENT Prime TC	₹15,490	8.3/10	2000 ppm	Large households and small office pantries that need volume more than features.
13	Pureit Marvella RO	₹20,990	8.3/10	2000 ppm	Buyers who want Pureit's safety philosophy in a better-finished, better-instrumented package.
14	Native M1 by Urban Company	₹16,999	8.3/10	2000 ppm	Metro buyers who have concluded that the real product in this category is the service contract.
15	KENT Grand RO Water Purifier	₹13,099	8.3/10	2000 ppm	A family on borewell, tanker or high-TDS municipal supply
16	KENT Ace RO Water Purifier	₹14,099	8.3/10	2000 ppm	A family on borewell, tanker or high-TDS municipal supply
17	KENT Ace Plus RO Water Purifier	₹15,599	8.3/10	2000 ppm	A family on borewell, tanker or high-TDS municipal supply
18	KENT Supreme Plus RO Water Purifier	₹15,599	8.3/10	2000 ppm	A family on borewell, tanker or high-TDS municipal supply
19	KENT Ace Copper RO Water Purifier	₹15,599	8.3/10	2000 ppm	A family on borewell, tanker or high-TDS municipal supply
20	Aquaguard Ritzy NXT	₹15,290	8.2/10	2000 ppm	Couples and small families in compact flats where wall space is the binding constraint.

Prices are indicative street prices, last verified 2026-08-01. Always confirm the current price on the marketplace before purchasing.

Frequently asked questions

Which is the best RO water purifier in India?

For most Indian homes, the KENT Grand Plus (around ₹16,499) — a 2,000 ppm input rating, TDS controller, 9-litre tank, roughly 50% water recovery and the strongest service network in the country. The Aquaguard Delight NXT (around ₹17,990) is the pick if kitchen space is tight, and the AO Smith Z9 Green RO (around ₹33,990) is the one to buy if your supply is brackish at 2,000 ppm or more, or if you want hot water on tap.

Is RO water good for health?

For water above roughly 300 ppm TDS, yes — RO removes dissolved salts, heavy metals, fluoride and nitrate that no other domestic technology touches, and that benefit far outweighs the mineral loss. On low-TDS supply the calculation reverses: RO strips calcium and magnesium you want to keep and delivers flat water people drink less of. Use a TDS controller to keep output around 60-120 ppm and the objection largely disappears.

How much does an RO water purifier cost in India?

A genuine RO starts around ₹9,000 (Livpure Glo Pro++, Aquasure Delight). The mainstream band is ₹13,000-₹18,000, where you get RO+UV+UF with a TDS controller and a usable tank — KENT Grand Plus, Aquaguard Delight NXT, Pureit Copper+. Above ₹25,000 you are buying hot water, a stainless-steel tank, a 3,000 ppm rating or under-sink installation. Budget a further ₹3,000-₹4,500 a year for consumables.

How long does an RO membrane last?

Rated life is typically 18-24 months, but it is a function of your input TDS and your pre-filter discipline. On 400 ppm municipal supply you may reach 24 months; on 1,200 ppm borewell water plan on 10-12; above 2,000 ppm, less again. Sediment and carbon pre-filters exist to protect the membrane — changing them every six months is what makes the expensive part last.

Which RO is best for 1500 TDS water?

Any membrane rated to 2,000 ppm handles 1,500 ppm, but with limited headroom — and borewell TDS climbs in summer. The safer specification is the AO Smith Z9 Green RO at 3,000 ppm. Whichever you choose, insist on a TDS controller, change pre-filters every six months, and budget for membrane replacement every 10-12 months rather than every 18.

Does an RO purifier work without electricity?

No. Reverse osmosis needs a booster pump to push water through the membrane against osmotic pressure, so it needs mains power and reasonable line pressure. If your power supply is unreliable, either pair the purifier with an inverter point or, for low-TDS supply only, use a gravity UF purifier that needs neither.

Best RO Water Purifiers in India (2026)

Our ranked picks

AO Smith Z9 Green RO

KENT Grand Plus

LG PuriCare WW182EP

Aquaguard Delight NXT

AO Smith X7

Aquaguard Aura

Havells Aqua S

KENT Pearl RO

Pureit Copper+ RO

KENT Marvel RO Water Purifier

KENT Marvel Plus-B

KENT Prime TC

Pureit Marvella RO

Native M1 by Urban Company

KENT Grand RO Water Purifier

KENT Ace RO Water Purifier

KENT Ace Plus RO Water Purifier

KENT Supreme Plus RO Water Purifier

KENT Ace Copper RO Water Purifier

Aquaguard Ritzy NXT