Supply · Install · Service

RO Water Filter Supply and Installation in Dubai

We supply, install and service reverse osmosis drinking water filters across Dubai: under-sink systems with a storage tank, compact tankless units, and systems for offices and cafés. We carry all the main brands, and we install units you have already bought.

An under-sink RO system costs AED 1,200 to 2,500 supplied and installed. Before you buy, read the first section below: in some Dubai homes the better fix is a clean tank or a simple carbon filter, and we’ll tell you if yours is one of them.

AED 1,200+

Under-sink RO installed

~AED 9

Monthly waste water, older units

AED 300–600

Filters per year

A kitchen sink and mixer tap in a Dubai home, where a separate RO drinking water tap is usually fitted beside the main tap
Written by Rashid Sajjad, Quick Fix DubaiLast reviewed Water quality figures checked against the RSB Water Quality Regulations (2019)
Before You Buy

Do You Need an RO Water Filter in Dubai?

You need an RO water filter in Dubai if you want to drink and cook with tap water instead of buying bottled water. The water DEWA supplies is treated to a high standard, but it passes through your building’s storage tank and pipes before it reaches your glass, and that last stretch is where taste and quality change. RO at the kitchen sink fixes the drinking tap. It doesn’t fix the tank.

DEWA itself has made the same point: its water meets WHO guidelines, but it advises customers to have home and building tanks cleaned regularly, because residue and mould build up over time, and notes that poor-quality pipes can corrode and contaminate the water. So match the fix to the complaint.

You want to stop buying bottled water

The right fix
Under-sink RO system
Why
This is what RO does best: drinking and cooking water from its own tap

Water tastes of chlorine

The right fix
Carbon filter, or RO (which includes carbon stages)
Why
Carbon alone removes chlorine taste for a fraction of the cost

Musty or earthy smell, cloudy water, grit in the glass

The right fix
Clean the water tank first
Why
A filter treats the symptom at one tap; the tank feeds every tap in the house

Rusty or brown water when you first open the tap

The right fix
Check the pipework
Why
Usually old galvanised pipes; RO protects the drinking tap only

Scale on the kettle, shower glass and taps

The right fix
Whole-house water softener
Why
RO treats one tap and does nothing for showers or appliances

Tank not cleaned for a long time and you’re worried about bacteria

The right fix
Tank cleaning and a lab test, then RO with a UV stage if you want extra protection
Why
Test first so you know what you are treating

Water tastes flat or slightly salty

The right fix
RO with a mineral stage
Why
Removes the dissolved salts, then adds back a small, controlled amount of minerals

If your complaint is in the third or sixth row, start with water tank cleaning. A filter fitted downstream of a dirty tank works harder, its filters clog sooner, and the showers and the washing machine still run on the same water. If the complaint is scale, you want whole-house water softening, not RO. Many villas end up with both: a softener for the house, RO for drinking.

You can get a quick picture of your own supply with our free Water Report Card before deciding.

Dubai Water

What’s in Dubai Tap Water, and What RO Removes

Dubai’s drinking water is made from seawater by desalination, using thermal distillation and reverse osmosis, and then treated to Dubai’s water quality regulations. Those regulations, issued by the Regulatory and Supervisory Bureau in 2019, are measured where the water leaves the production plant. Everything after that, from the DEWA network to your building’s tank to the pipe behind your sink, is outside that measurement.

Where compliance is measured

Dubai regulation
Where water leaves the production plant
What it means for you
Nothing after that point is covered, including your building’s tank and pipes

E. coli and enterococci

Dubai regulation
0 per 100 ml
What it means for you
Zero at the plant; what happens in a warm, uncleaned tank is a separate question

Conductivity (water entering DEWA’s network)

Dubai regulation
200 to 900 µS/cm
What it means for you
Roughly 100 to 630 mg/L of dissolved solids, so a wide range is normal

Sodium (entering the network)

Dubai regulation
2 to 35 mg/L
What it means for you
Low by international standards

pH (entering the network)

Dubai regulation
7.9 to 8.5
What it means for you
Slightly alkaline, which protects pipes

Primary disinfectant

Dubai regulation
Chlorine dioxide for water entering DEWA’s network
What it means for you
Leaves a residual that fades as water sits in tanks

Lead / copper (from pipes and fittings)

Dubai regulation
10 µg/L / 2 mg/L maximum
What it means for you
Listed because they can come from plumbing, not from the source

Source: RSB Water Quality Regulations, September 2019, Annex I. Ranges marked “entering the network” apply to water entering DEWA’s potable network.

What reverse osmosis takes out

An RO membrane holds back most dissolved salts and metals, including the lead and copper that can come from old fittings, along with nitrates and fluoride. The carbon stages before and after the membrane take out chlorine and chlorine dioxide taste and most odours. Sediment filters catch rust flakes and grit from tanks and pipes before they reach the membrane.

RO is not a sterilising system on its own. The membrane blocks bacteria, but the storage tank and tubing after it can grow a film over time if filters are left too long or the system sits unused. That is why regular filter changes matter, and why some households add a UV stage at the end.

Putting minerals back

RO removes the calcium and magnesium along with everything else, which leaves water tasting flat. A WHO-commissioned review of demineralised water cites a recommendation that such water carry at least 100 mg/L of dissolved salts and 30 mg/L of calcium, and a WHO expert group found that adding calcium and magnesium back to demineralised water would likely benefit health. Most of the minerals you take in come from food, not water, so this isn’t a reason to fear RO. It is a good reason to choose a system with a mineral stage, which also improves the taste.

TDS Meters

TDS Meters: What the Number Means in Dubai

A TDS meter measures total dissolved solids, the minerals and salts dissolved in water, in parts per million or mg/L. It tells you how much is dissolved, not whether any of it is harmful. It can’t detect bacteria, and it can’t tell calcium from lead.

Sellers in Dubai quote “normal” tap readings that don’t agree: 70 to 120, 150 to 350, 150 to 500. The regulation explains why. The allowed conductivity range for water entering DEWA’s network is 200 to 900 µS/cm, and dissolved solids run at roughly half to two-thirds of the conductivity figure, which works out to about 100 to 630 mg/L. A reading of 300 at your tap is normal Dubai water.

Reading your meter

Tap water, 100–600: normal range for Dubai supply

RO tap, under 50: membrane working

RO tap, 20–80 with a mineral stage: normal, the stage adds some back

RO tap creeping towards the tap-water reading: membrane or filters due

The meter is useful for one job: checking that an RO system is still working. Test the tap water and the RO tap on the same day. A healthy membrane removes most of the dissolved solids, so the RO reading should be a small fraction of the tap reading. If the gap narrows over the months, the membrane is wearing out.

Be wary of anyone who dips a meter in your tap water, shows you a number and tells you the water is unsafe. The number doesn’t measure safety. If you want to know what is in your water, a laboratory test does that; a TDS meter doesn’t.

System Types

Types of Reverse Osmosis System in Dubai

For a Dubai home, the choice is almost always between an under-sink RO system with a storage tank and a tankless under-sink unit. The tank type costs less and needs no power. The tankless type is smaller, faster and wastes less water, but needs a socket under the sink. Countertop units suit renters, and whole-house RO is rarely worth it.

Under-sink RO with storage tank

Best for
Most apartments and villas; the lowest price
Strengths
A small pressure tank fills slowly and holds a few litres ready; no power needed on basic models
Trade-offs
Water sits in the tank; older designs waste more water

Tankless under-sink RO

Best for
Households that drink a lot, or have little cabinet space
Strengths
Filters on demand with a built-in pump; compact; more efficient
Trade-offs
Needs a power socket under the sink; higher price

Countertop RO

Best for
Renters who can’t drill a worktop
Strengths
Sits beside the sink and is filled by hand or from the tap
Trade-offs
Small capacity; you refill it

Whole-house RO

Best for
Rarely the right choice for a Dubai home
Strengths
Treats every tap
Trade-offs
Large waste stream; stripped water attacks metal pipes unless re-mineralised; storage tank and pump needed

Office and café systems

Best for
Pantries, coffee machines, ice machines, clinics
Strengths
Higher output; can feed several points
Trade-offs
Check each machine’s water specification first

Why we don’t push whole-house RO

Water that has been through reverse osmosis is low in minerals and slightly aggressive: it dissolves metal from the pipes it runs through. DEWA puts minerals back into desalinated water before it enters the network for this reason, and Dubai’s regulations set minimum conductivity and pH values for water entering the network. A whole-house RO system strips those minerals out again and sends the result through every copper pipe and brass fitting in the house. It can be done, with a mineral stage, pH correction, a storage tank and a pump, but for scale on showers and appliances a whole-house softener is the simpler answer, with RO at the kitchen sink for drinking.

Coffee machines and ice makers

An RO line can feed a fridge ice maker or a coffee machine as well as the drinking tap. For espresso machines, check the manufacturer’s water specification first: some ask for a minimum mineral content, and very low-mineral water can affect both taste and the machine. A mineral stage usually covers this.

Filter Stages

RO Stages Explained, and Which Ones Matter Here

Every RO system is built around four stages: a sediment filter, a carbon filter, the membrane, and usually a post-carbon filter. Anything beyond that is an extra, such as a mineral stage or a UV lamp. A “7-stage” or “10-stage” label often counts functions inside one cartridge, or adds cartridges that each need replacing.

Sediment filter

What it does
Catches rust, sand and grit from tanks and pipes
For Dubai water
Essential in Dubai, where the water has sat in a tank

Carbon filter (pre-membrane)

What it does
Removes chlorine and chlorine dioxide, which damage the membrane
For Dubai water
Essential; it protects the most expensive part

RO membrane

What it does
Holds back dissolved salts, metals and most contaminants
For Dubai water
The part that makes it RO

Post-carbon filter

What it does
Polishes the taste after the storage tank
For Dubai water
Worth having on tank systems

Mineral stage

What it does
Adds back a small amount of calcium and magnesium
For Dubai water
Recommended for taste; see the section above

UV lamp

What it does
Disinfects the water just before the tap
For Dubai water
Optional extra protection; needs power

More stages means more cartridges, and every cartridge has a price and a replacement date. When comparing two systems, count the cartridges you will buy each year and ask what they cost here, not how many stages are printed on the box.

The sediment and carbon stages matter more in Dubai than in many places, because the water has usually spent time in a rooftop or basement tank. A sediment filter that clogs quickly after installation is often a sign that the tank needs cleaning.

Waste Water

RO Waste Water and Your DEWA Bill

Every RO system sends part of the water it takes in to the drain, carrying away the salts the membrane held back. Older under-sink designs typically send 3 to 5 litres to drain for every litre of drinking water. Newer tankless units commonly run between 1:1 and 3:1 the other way round: one to three litres of drinking water for every litre sent to drain.

In dirhams, the difference is smaller than the marketing suggests.

Worked example: 10 litres of drinking water a day

Older unit, 4 L to drain per 1 L: 40 L a day to drain

40 L × 30 days = 1.2 m³ a month

At DEWA’s first-slab rate of AED 7.70 per m³: about AED 9 a month

Tankless unit, 2 L drinking per 1 L to drain: 5 L a day

5 L × 30 days = 0.15 m³ a month: about AED 1 a month

So a less efficient unit costs about AED 100 a year more in water. That matters, but it shouldn’t decide the purchase on its own. The bigger reasons to choose an efficient unit are that it uses less water in a desert city and usually produces water faster.

Waste also rises when the inlet pressure is low. Most manufacturers specify a minimum inlet pressure, commonly around 2.8 bar (40 psi). Villas fed by gravity from a rooftop tank, and top-floor apartments just below a building’s roof tank, often sit below that, and the system then runs slowly and sends more to drain. We check the pressure before recommending a unit. If it is too low, a model with its own pump solves it, or the building needs a booster pump.

Buyer’s Checklist

Choosing an RO System: What to Check Before You Buy

Choose an RO system by its certification, its real output at your water pressure, the cost and availability of its filters in the UAE, and whether it has a mineral stage. Stage counts and “99% pure” claims tell you little. We supply all the main brands, so this is the checklist we use to recommend one, and you can use it to compare any quote.

NSF/ANSI 58 certification

Ask for
Ask for the certificate and the performance data sheet
Why it matters
NSF/ANSI 58 is the standard for RO systems; the data sheet lists what the unit reduces and by how much

Waste ratio, with its direction

Ask for
“3:1 pure to drain” or “1:3”?
Why it matters
The same numbers can mean opposite things

Output per day

Ask for
Litres or gallons per day (GPD) at a stated pressure
Why it matters
A tank system rated at 75 GPD in a lab may produce much less at low Dubai pressure

Filter prices and availability

Ask for
Price of each cartridge, and who stocks them in the UAE
Why it matters
Proprietary cartridges that must be imported are the most common reason systems are abandoned

Mineral stage

Ask for
Included, or available as an add-on
Why it matters
Improves taste and replaces some calcium and magnesium

Tap

Ask for
Lead-free, metal body, sized for your worktop hole
Why it matters
The tap is the part you touch every day

Leak protection

Ask for
Leak-stop valve or water sensor in the cabinet
Why it matters
An apartment leak under the sink can reach the flat below

Power

Ask for
Does it need a socket under the sink?
Why it matters
Tankless units and UV stages do; many cabinets have none

Warranty and service

Ask for
Who services it in Dubai, and what the warranty covers
Why it matters
A good system with no local support is a poor purchase

The filter question deserves the most attention. The purchase price is paid once; the cartridges are paid every year for as long as you own the system. Two units at the same price can differ by several hundred dirhams a year in filters, and a unit whose filters are hard to find in Dubai will eventually run on overdue cartridges, which is worse than no filter.

If you have already bought a system online or brought one from abroad, we install it. Check that it runs on 220 to 240 volts if it has a pump, and that the tap and fittings are included; imported kits sometimes arrive with fittings sized for a different market.

Your Kitchen

Installing RO in Dubai Apartments and Villas

Installing an under-sink RO system needs four connections: a tee on the cold water supply, a drain connection on the sink waste pipe, a hole for the drinking tap, and space in the cabinet for the unit. The work is the same in apartments and villas; what differs is permission, water pressure and cabinet space.

Apartments

If you rent, ask the landlord before a hole is drilled in the worktop. Where drilling isn’t allowed, there are two alternatives: use an existing hole, such as a soap dispenser position, or replace the kitchen mixer with a three-way tap that has a separate filtered channel, which needs no new hole at all. When you move out, the system can be removed and the supply capped.

Cabinet space is the usual constraint. A tank system needs room for the unit and the pressure tank side by side; a tankless unit fits where the tank type won’t. Because a leak in an apartment can reach the unit below, we recommend a leak-stop valve on every apartment installation.

Villas

Villas usually have the space, but check the pressure. A villa fed by gravity from a rooftop tank gets roughly 0.1 bar for every metre of height between the tank and the tap, so even a ground-floor kitchen seven or eight metres below the tank sees well under 1 bar unless the house has a booster pump. That is far below what most RO membranes need, so a villa on gravity feed usually needs a model with its own pump. Villas are also where an RO line to the fridge ice maker makes most sense, since the run is usually straightforward.

Worktops and sinks

Granite and quartz worktops are drilled with a diamond core bit, cooled with water, to avoid chipping; stainless steel sinks are punched. The drinking tap needs a hole of about 12 mm on most models. We confirm the tap position with you before drilling, because a hole in stone can’t be moved.

The drain connection

The waste line from the RO unit joins the sink waste pipe with a drain saddle, fitted above the trap so waste water can’t siphon back into the system. A saddle fitted below the trap, or on a waste pipe that is already partly blocked, causes gurgling and slow filling. If your sink drains slowly already, have it cleared first; our sink plumbing repair page covers it.

Process

How We Install a Drinking Water Filter

Drinking water filter installation takes about two hours for a standard under-sink RO system. We check the kitchen first, because pressure, cabinet space and the worktop decide which unit will work, then make four connections, flush the new filters and record a before-and-after TDS reading.

  1. 1

    Check the kitchen

    We measure the water pressure at the sink, check cabinet space and whether there is a power socket, note the worktop material, and test how well the sink drains. We also take a TDS reading of your tap water to compare against later.

  2. 2

    Recommend or check the unit

    We recommend a system that suits the pressure, space and your household's use, or check that a unit you already bought has everything it needs for your kitchen.

  3. 3

    Connect the cold supply

    The cold water line is isolated and a tee with its own shut-off valve is fitted, so the RO system can be turned off without cutting water to the sink.

  4. 4

    Fit the drinking tap

    The tap position is agreed with you, then the worktop is drilled with a water-cooled diamond core bit for stone, or the sink punched for stainless steel, and the tap is fitted.

  5. 5

    Connect the drain

    The waste line joins the sink waste pipe with a drain saddle fitted above the trap, so waste water can't siphon back into the system.

  6. 6

    Mount the unit

    The unit and any storage tank are secured in the cabinet, with a leak-stop valve where fitted and an optional line to the fridge or coffee machine.

  7. 7

    Flush and leak-check

    New filters and the membrane are flushed as the manufacturer specifies, usually by running the first batches of water to drain, while every joint is checked under pressure.

  8. 8

    Test and hand over

    We take a TDS reading at the RO tap and record it beside the tap-water reading, then give you the filter schedule and set up reminders if you join a service plan.

Running Costs

RO Maintenance Schedule and Running Costs

An RO system needs its sediment and carbon filters changed every 6 to 12 months and its membrane every 2 to 3 years, which comes to about AED 300 to 600 a year for a typical household. Overdue filters are the main reason RO systems stop working well, so the schedule matters more than the brand.

Sediment filter

Replace
Every 6 – 12 months
Notes
Sooner if the tank is dirty; a fast-clogging filter is a warning sign

Carbon pre-filter

Replace
Every 6 – 12 months
Notes
Overdue carbon lets chlorine reach and damage the membrane

RO membrane

Replace
Every 2 – 3 years
Notes
Replace when the RO tap’s TDS reading rises towards the tap-water figure

Post-carbon and mineral cartridges

Replace
Usually yearly
Notes
Follow the manufacturer’s interval

UV lamp (if fitted)

Replace
Yearly
Notes
The lamp dims before it fails, so it is changed on schedule

Storage tank (tank systems)

Replace
Sanitised at filter changes
Notes
Stops a film building up in the tank and tubing

RO against bottled water

Five-gallon (18.9 litre) bottles in Dubai cost roughly AED 8 to 12 each. Al Ain’s new-customer offer of 25 bottles from AED 210, for example, works out at about AED 8.40 a bottle.

Household using 10 litres of drinking water a day

Bottled: 300 L a month ÷ 18.9 L = about 16 bottles

16 bottles × AED 8.40 = about AED 133 a month, AED 1,600 a year

RO, year one: system AED 1,200 – 2,500 + filters AED 300 – 600 + water AED 12 – 110

RO, each year after: about AED 310 – 710

Break-even: about 1 year for a basic system, about 3 years for a premium one

The calculation leaves out the time spent carrying bottles and the plastic, and it assumes the filters are changed on time. A system left running on filters two years overdue is cheaper than bottled water only on paper.

Pricing

RO Water Filter Prices in Dubai

RO water filter installation in Dubai costs AED 1,200 to 2,500 for an under-sink system with a storage tank and AED 2,000 to 3,500 for a tankless unit, supplied and installed. Installing a unit you already own costs AED 250 to 450.

Under-sink RO with storage tank, supplied and installed

Typical price
AED 1,200 – 2,500

Tankless RO, supplied and installed

Typical price
AED 2,000 – 3,500

Installing a unit you already bought

Typical price
AED 250 – 450

Filter change visit (sediment and carbon)

Typical price
AED 150 – 300, plus filters

RO membrane replacement

Typical price
AED 300 – 600, including membrane

Annual filter costs, typical household

Typical price
AED 300 – 600

Whole-house RO, office and commercial systems

Typical price
Quoted after survey

Filter-change service plan

Typical price
Available; ask for details

Within each range, the price follows the system’s output and number of cartridges, whether it has a mineral stage or UV, and the installation: a stone worktop, a line to the fridge or a new socket under the sink all add work. We quote a fixed price once we have seen the kitchen.

When comparing quotes, add up the first three years: purchase, installation and the filters for three years at local prices. That figure separates a good buy from a cheap unit with expensive cartridges.

Workplaces

RO for Offices, Cafés and Clinics

Workplaces use RO the same way homes do, at higher volume: a pantry drinking tap, a line to the coffee machine and ice maker, and sometimes a chilled dispenser in place of bottled water coolers. The output is sized to the number of people and machines, and the filters are changed on a fixed schedule rather than when someone notices.

For cafés and restaurants, the coffee machine and ice machine decide the specification. Check each machine’s water requirements before choosing the system, and keep the filter records with your other maintenance records. For kitchen drainage, grease traps and larger plumbing work, see our commercial plumbing page.

Common Questions

RO Water Filter FAQ

How much does an RO water filter cost in Dubai?

An under-sink RO system with a storage tank costs AED 1,200 to 2,500 supplied and installed, and a tankless unit AED 2,000 to 3,500. If you already have a unit, installation costs AED 250 to 450. Filters cost about AED 300 to 600 a year.

Is Dubai tap water safe to drink without a filter?

DEWA's water is treated to Dubai's regulations and meets WHO guidelines where it leaves the plant. What reaches your tap also depends on your building's tank and pipes, which is why DEWA advises regular tank cleaning. RO at the kitchen sink is the simplest way to be sure of your drinking water.

Does RO remove minerals, and is that a problem?

Yes, RO removes most minerals along with everything else. Most minerals in your diet come from food, not water, but a mineral stage after the membrane adds some calcium and magnesium back and improves the taste. We recommend one.

How often do RO filters need changing?

Sediment and carbon filters every 6 to 12 months, sooner if your water tank is dirty. The membrane every 2 to 3 years. Mineral and post-carbon cartridges usually once a year, and a UV lamp yearly if you have one.

How much water does an RO system waste?

Older under-sink units send about 3 to 5 litres to drain for every litre of drinking water. Newer tankless units produce one to three litres of drinking water for every litre to drain. For 10 litres of drinking water a day, that is about AED 9 a month in water on an older unit and about AED 1 on an efficient one.

Can I install RO in a rented apartment?

Yes, with the landlord's agreement if a hole is needed in the worktop. Where drilling isn't allowed, a three-way kitchen tap with a separate filtered channel, or a countertop unit, avoids it. The system can be removed and the supply capped when you move out.

Will you install an RO unit I bought online?

Yes. Installation of a customer-supplied unit costs AED 250 to 450. Check that pumped models run on 220 to 240 volts and that the tap and fittings are included.

Is a tank or tankless RO system better?

A tank system costs less and needs no power, but water sits in the tank and older designs waste more. A tankless unit is compact, fast and more efficient, but needs a socket under the sink. For villas on gravity-fed water, a pumped tankless unit often works better.

Why is my RO tap running slowly?

The usual causes are clogged pre-filters, low inlet pressure, or a storage tank that has lost its air charge. A sediment filter that clogs within weeks is often a sign the water tank needs cleaning.

Can an RO system feed my fridge or coffee machine?

Yes, a line can run from the RO unit to a fridge ice maker or coffee machine. Check the coffee machine's water specification first, because some espresso machines need a minimum mineral content.

Do I still need tank cleaning if I have RO?

Yes. RO treats the drinking tap only; showers, the washing machine and every other tap still use tank water. A clean tank also makes the RO filters last longer.

Do you offer RO service plans and warranty?

Yes. We offer filter-change service plans with reminders. Our installation work carries a one-month workmanship warranty, and the unit itself is covered by its manufacturer's warranty.

Drinking Water From Your Own Tap

Send us a photo of the space under your kitchen sink and tell us whether you rent or own. We’ll recommend a system that fits, or check the one you have, and give you a fixed installed price.

RO installation across Dubai, including:

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