Insights

RO vs UV on mixed Cauvery and borewell supply

High TDS needs RO with a mineral cartridge. Stable low TDS can stay UV + UF. The choice follows a reading, not a brand ad.

25 October 2026 · 4 min read

AuthorSuresh NairReviewerHarish BhatVerifiedShwetha Iyer
RO and UV stack on the bench before an inlet TDS check
RO and UV stack on the bench before an inlet TDS check

Start with a reading

Start with a TDS reading at the kitchen inlet. Mixed tanker days after summer can swing that number week to week.

When RO is the stack

All Brand Water Purifier installs and repairs RO, UV and UF stacks listed on the services page. Membrane work happens only when reject water and TDS say so.

Frequently asked questions

Can UV replace RO on high TDS?
No. High TDS needs RO with a mineral cartridge. Stable low TDS can stay UV + UF.
Where are brands listed?
On the brands page: Kent, Aquaguard, Pureit and LivePure.

Related

Written, reviewed and verified

AuthorSuresh NairInstallation authorReviewerHarish BhatService reviewerVerifiedShwetha IyerPhone verifier

All Brand Water Purifier · Chellikere, Meganahalli, Kalyan Nagar, Bengaluru 560043

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