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Buying Guide Water Purifiers

RO vs UV vs UF Water Purifier: Which Do You Need?

Quick answer

Test your water's TDS. Choose RO for high-TDS borewell or tanker water and UV + UF for low-TDS municipal water. RO wastes water, so do not buy it if you do not need it.

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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.

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.

Buyrskip Editorial Team

Part of the Buyrskip research team. We compare specifications, documentation and real-world trade-offs so you can decide faster.