What RO does
Reverse osmosis removes dissolved salts and heavy metals, reducing TDS.
What UV and UF do
UV kills bacteria and viruses; UF filters out cysts and fine particles. Neither reduces TDS.
Check your TDS
A cheap TDS meter tells you whether you need RO.
Running costs
Budget for yearly filter changes and service.
Our recommendations
Ready to choose? See our Best Water Purifiers in India: RO, UV & UF.
Recommended products
Kent Grand Plus RO Water Purifier
RO + UV + UF with TDS control
Pros
- Multi-stage purification
- TDS control
Cons
- Wastes water
- Filter replacements cost extra
HUL Pureit Eco Water Saver
Up to 60% water recovery
Pros
- Better water recovery
- Compact
Cons
- Smaller storage
Aquaguard Aura RO+UV Water Purifier
Mineral guard and wide service
Pros
- Wide service network
- Active copper
Cons
- Service plans add cost
Frequently asked questions
Do I need an RO purifier?
Only if your water TDS is high, such as borewell or tanker water. For low-TDS municipal water, UV + UF is enough and wastes no water.