RO Water Purifier Service in Kolkata — Booked on the App

Is your drinking water actually safe?

An RO purifier protects your family only while its filters and membrane work. As they clog and expire, the RO quietly stops removing contaminants — yet the water still looks clear. Stale filters can let through bacteria and dissolved impurities linked to stomach infections and waterborne illness. If it's been months since a service, your water may not be as safe as you think.

What water purifier services can I book?

Complete RO and UV care:

• Servicing — clean, sanitise and performance-check
• Filter & membrane change — sediment, carbon, RO membrane, UV
• Repair — no water, leaks, taste/odor, pump, electrical
• Installation — new fitting, uninstallation and shifting
• AMC — yearly plan with scheduled filter changes

RO, RO+UV or UF, any brand — one app covers it. You can also explore other home appliance repair services with us.

Can I get same-day RO repair?

Yes. A dead RO means no safe drinking water, so Zaruri Hai prioritises same-day service across Kolkata. Book in the morning and, in most areas, a technician reaches you the same day — no days of bottled water.

How often should an RO be serviced?

Service your RO every 3–6 months, sooner if you have heavy usage or poor input water. Regular servicing keeps water safe, maintains taste, reduces breakdowns and extends the purifier's life.

When to change each RO filter

Each stage has its own life — and skipping one means unsafe water:

We track these for you under an AMC, so nothing is forgotten.

What do the RO filter stages do?

Each part removes something different:

• Sediment filter — traps dirt, sand and mud
• Pre-carbon filter — removes chlorine, odour and organic impurities
• RO membrane — the heart; removes dissolved salts, heavy metals and TDS
• Post-carbon filter — polishes the final taste
• UV / UF — kills or blocks bacteria and viruses
• Mineraliser / TDS controller — adds back essential minerals

What is TDS, and what's safe to drink?

TDS (Total Dissolved Solids) is the amount of dissolved minerals and salts in water, measured in ppm:

• Below 500 ppm — the acceptable limit for drinking water
• 50–150 ppm — the ideal, best-tasting range
• Above 500 ppm — needs RO to be safe and palatable
• Below 50 ppm — too low; water tastes flat and lacks minerals, so a mineraliser helps

Our technician tests your TDS and sets it right.

RO, UV or UF — which purifier do you need?

It depends on your water:

• RO — removes dissolved salts and heavy metals; needed for high-TDS or borewell water; uses some water as reject.
• UV — kills microbes but doesn't reduce TDS; suited to low-TDS municipal water.
• UF — blocks bacteria and cysts without electricity, but doesn't reduce TDS.
• RO + UV + UF — the most complete protection.

Unsure? We test your water and recommend the right setup.

Common RO problems we fix — and what causes them

A quick read on the fault:

• No water — a clogged filter or membrane, pump failure, or power/adaptor fault.
• Slow flow / tank not filling — a choked filter, ageing membrane, low pressure, or a faulty auto-off.
• Bad taste or smell — an expired carbon filter or membrane.
• Leaking — loose fittings, a cracked pipe, or a tank or membrane-housing issue.
• Non-stop running — a faulty float or auto-off switch.
• Excess water wastage — a worn membrane or wrong reject setting.

Why an RO AMC saves you money

Filters and membranes need changing on schedule — pay for each visit separately and it adds up. An Annual Maintenance Contract bundles scheduled servicing, filter changes, leak fixes and priority repairs into one fixed yearly cost, so you spend less, never miss a filter change, and always have safe water. Ideal for homes and offices that depend on their RO daily.

Do you use genuine filters and parts?

Yes — and it matters more than you'd think. The RO market is full of cheap duplicate filters that purify poorly and fail fast. Zaruri Hai fits genuine, branded filters and membranes, so your water is truly safe and the parts last their full life. We show you what's being replaced and why.

RO installation, uninstallation & shifting

New installation, plus uninstallation and shifting when you move. We mount the unit, connect inlet, outlet and drain lines, fit filters and membrane, check for leaks and pressure, run a TDS and performance test, and clean up — set up right for safe water from day one. (Need plumbing adjustments? We can arrange a plumber for water connections too).

Do you service all RO brands?

Yes — every major brand. Kent, Aquaguard, Pureit, Livpure, AO Smith, Havells, Aquasure, Blue Star, Eureka Forbes and most other RO, RO+UV and UF purifiers. Our technicians are trained across brands and models.

How much does RO service cost in Kolkata?

You see the price upfront — a small inspection charge that's adjusted into the bill if you proceed, then a clear estimate. Servicing is fixed-rate; filters and membranes are priced by part.

*Genuine filters/parts priced separately. Your exact, live price shows in the app before you confirm.

Do I pay an advance to book?

No advance. You pay after the work is finished and your water is flowing clean. The inspection charge is adjusted into the bill once you go ahead with the service.

Are your technicians verified and skilled?

Yes. Every RO technician is background-verified and experienced across brands and water conditions. You get a professional who tests your water, explains the issue, and uses genuine parts — not someone who fits a duplicate filter and leaves. (Learn how we verify every technician or work as an RO technician with Zaruri Hai).

Will you test my water?

Yes. The technician checks your TDS and water quality during the visit and recommends the right service, filter or purifier type for your home — so you're treating the real problem, not guessing.

Which areas of Kolkata do you cover?

We send technicians across the city and suburbs — New Town, Rajarhat, Salt Lake (Bidhannagar), Lake Town, Baguiati, VIP Road, Dum Dum, Shyambazar, Park Street, Ballygunge, Gariahat, Kasba, Behala, Tollygunge, Jadavpur, Garia and the entire EM Bypass corridor. Enter your PIN in the app or view all areas we cover in Kolkata to check instantly.

Why book an RO service on the app instead of calling around?

One trusted app, one verified technician, genuinely safe water — without the phone-call lottery. (You can even book a full kitchen deep cleaning while we fix the RO).

Ready for safe, great-tasting water again?

Don't gamble with your family's drinking water. Download the Zaruri Hai app, book a verified RO technician, and get your purifier serviced or repaired with genuine filters — transparent price, pay after work.

Frequently Asked Questions