Saudi Arabia's café market has exploded. Gulf News, citing the Ministry of Commerce, reported in 2025 that more than 61,000 business licences had been issued for cafés in the Kingdom.[3] In Riyadh, Jeddah and Al Khobar a new specialty bar seems to open every week, and customers have no reason to stay loyal to a café whose coffee tastes worse than yesterday. Great-tasting coffee is now the minimum needed to protect a brand.
Yet many cafés still run a commercial espresso machine on water that has passed through one simple filter. That leaves the most important ingredient uncontrolled. Supply in the Kingdom ranges from very low-mineral desalinated water to harder, saltier water where groundwater is in the mix, and a simple cartridge does nothing about either. Reverse osmosis units for coffee preparation, with the right minerals put back, give a café control of its water, its machine and its reputation.
This guide is for specialty café owners, multi-branch chains and roasters supplying hospitality accounts in Saudi Arabia. It explains why a simple filter falls short, what breakdowns really cost in riyals, how RO with remineralisation pays its way, and how to plan the installation for local conditions.
TL;DR
- Competition among Saudi cafés is intense. Consistent, great-tasting coffee protects your brand, and water is more than 98% of a filter coffee.
- A simple sediment or carbon filter improves taste but leaves hardness, TDS and salts untouched, so it cannot stop scale or keep branches consistent.
- Failed heating elements, technician call-outs and closed days can cost a busy branch thousands of riyals a year.
- RO with remineralisation gives every branch the same target water. Against breakdowns and downtime, it usually pays for itself.
- Straight RO permeate is too pure for espresso. Always specify blending or remineralisation with it.
Planning a new branch? Talk to Our Team before the counter is built.
In this article
- Why great coffee is now non-negotiable in the Kingdom
- Why a simple filter is not enough
- What good coffee water looks like
- The real cost of breakdowns and downtime
- Why RO with remineralisation pays its way
- Choosing reverse osmosis units for coffee preparation
- Heat, tanks, drains and the back bar
- Scale, descaling and the warranty
- Frequently asked questions
Why great coffee is now non-negotiable in the Kingdom
Coffee has become one of the fastest-moving parts of Saudi hospitality. The Ministry of Culture named 2022 the Year of Saudi Coffee, and UNESCO added the knowledge and practices of growing Khawlani coffee beans, from the Jazan highlands, to its intangible heritage list the same year.[1][2] Saudi customers are knowledgeable, they share their opinions online, and with tens of thousands of cafés to choose from, one bad cup is enough to send them elsewhere.
Chains feel this most. The same beans, grinder and recipe can taste different in Riyadh, Jeddah and Al Khobar, and very often the variable is the water. Much of the Kingdom's municipal supply comes from desalination, which produces water very low in minerals before it is conditioned for the network. In some regions it is blended with groundwater, which is naturally harder and higher in dissolved solids.[4] Then each building stores water in its own roof or ground tank.
The rules leave room for that spread. A 2024 review led by the Saudi Water Authority notes that the national guideline allows TDS anywhere from 100 to 1,000 mg/L, while the Authority's own suggested range for total hardness is only 60 to 80 ppm.[5] Two branches can both be on compliant tap water and still sit far apart for coffee. A filter coffee brewed to the SCA's Golden Cup strength is only 1.15% to 1.35% dissolved coffee, so more than 98% of the cup is water.[7] When the water moves, the brand moves with it.
Why a simple filter is not enough
A simple filter on a café water line is usually a sediment cartridge and a carbon block. Both are useful, but neither touches the dissolved minerals that decide scale and flavour:
| What the café needs | Simple sediment and carbon filter | RO with remineralisation |
|---|---|---|
| No chlorine taste or smell | Yes | Yes |
| No sand or rust particles | Yes | Yes |
| Hardness held inside the machine maker's limits | No | Yes |
| TDS set to one figure, whatever the supply | No | Yes |
| Excess salts and chloride removed | No | Yes |
| The same water in every branch | No | Yes |
In a branch on harder, saltier water, the filter lets the minerals that form scale go straight into the boiler. In a branch on very soft desalinated water, it cannot add the minerals coffee needs. Either way the coffee drifts and the machine suffers. A simple filter is a reasonable minimum for a drinking fountain. For a commercial espresso machine at the heart of a busy branch, it is a false saving.
What good coffee water looks like
The Specialty Coffee Association's long-standing water standard gives a clear reference for brewing water.[6] It aims for total dissolved solids of about 150 mg/L, within an acceptable band of 75 to 250 mg/L. Calcium hardness is targeted at 68 mg/L as CaCO3, with 17 to 85 mg/L acceptable. Total alkalinity should sit at or near 40 mg/L, pH around 7.0, sodium at or near 10 mg/L, and there should be no chlorine, odour or colour.
Each part of that profile has a role. Magnesium and calcium help pull flavour from the grounds, and calcium is also the main cause of scale. Bicarbonate buffers acidity, so a shot with too little tastes sharp and one with too much tastes dull. Machine makers add their own limits: La Marzocco's specification calls for total hardness of 70 to 100 ppm.[8] Treat these numbers as the target at the group head, after all treatment. Our guide to TDS and ppm in Saudi Arabia explains how to read the figures on a water report.
The real cost of breakdowns and downtime
The price of an RO system is clear on day one. The cost of running without one is spread across a year of service visits and quiet afternoons, so it rarely gets added up.
The figures below are an illustrative example for a busy Saudi branch. They are not a quote. Ask your machine supplier for your own parts and labour prices, and use your own sales.
| Cost | Example figure | Usual cause |
|---|---|---|
| Heating element replaced and fitted | SAR 1,800 to 3,000 per failure | Scale on the element, or corrosion from very soft water |
| Technician descale | SAR 700 to 1,400 per visit | Hard or variable water with no mineral control |
| Solenoids, seals and other worn parts | SAR 600 to 1,800 a year | Scale flakes and corrosion in the waterways |
| Sales lost while the machine is down | 300 cups a day at SAR 15 = SAR 4,500 per day | Waiting for a technician or an imported part |
| Customers who switch to a rival | Hard to measure | Shots that taste different from branch to branch |
In this example, one element failure, two technician descales and some worn parts add up to roughly SAR 3,800 to 7,600 a year for a single branch. One day without espresso adds SAR 4,500. Multiply by ten branches and the numbers become serious. The most expensive loss is the customer who tries the café next door during the outage and does not come back.
Why RO with remineralisation pays its way
RO with remineralisation removes the cause of those costs:
| Stage | What it does |
|---|---|
| Sediment and carbon pre-filtration | Takes out particles and chlorine, and protects the membrane. This is the only job a simple filter does |
| Reverse osmosis | Removes most dissolved minerals and salts, so the result no longer depends on the city, the tank or the season |
| Remineralisation or blend | Adds back a measured amount of calcium, magnesium and bicarbonate, set to the SCA band and the machine maker's figures |
Every branch then brews with the same water. Scale forms far more slowly, boilers hold their temperature, and a recipe written in Riyadh tastes the same in Jeddah.
Set that against the example above. Avoiding even one element failure and an emergency call-out a year recovers much of the system's cost. Add the trading days it protects and the loyalty that comes from consistent coffee, and for most busy cafés RO with remineralisation pays for itself. The exact payback depends on each branch's water, machine and volume, which is why we size each system to the site.
Do not skip the remineralisation stage. Unblended permeate commonly reads in single figures of mg/L, well below the SCA band. It gives thin, sour shots, makes the bar hard to dial in, and is aggressive towards metal parts. Some boiler level probes also rely on the water's conductivity.
Choosing reverse osmosis units for coffee preparation
Measure TDS, total hardness, calcium hardness, alkalinity, pH and chloride at the point where each coffee machine will connect, using a calibrated meter or the building's latest water report. Then use this as a guide:
| Your branch | What we recommend |
|---|---|
| Any commercial espresso machine in daily use | RO with remineralisation, set to the machine maker's specification |
| Harder, saltier supply where groundwater is blended in | RO with remineralisation. A simple filter will not stop scale |
| Very soft desalinated supply | RO with remineralisation, or carbon filtration plus a remineralising stage, so minerals are added back |
| Chain wanting one profile across all branches | RO with remineralisation at every site, set to the same target |
| Ice machine or hot water outlet on the same supply | Carbon filtration with scale inhibition, such as Everpure Fibredyne FC, on its own line |
Set the remineralisation with a calibrated TDS meter and hardness and alkalinity readings, then confirm by cupping. Write the settings down for each branch so a new barista or technician can check them.
Our compact Noble RO 60 has an adjustable salinity regulator, so final TDS can be set to your recipe or the machine maker's specification.
Everpure's Fibredyne FC systems pair carbon filtration with a built-in scale inhibitor. They suit ice machines, hot water outlets and the pre-filter stage of a larger system. Our guide to Everpure Fibredyne FC systems in Saudi Arabia covers this option in more depth, and Everpure QL filter heads explains how cartridges are swapped quickly on a busy bar.
Traditional Saudi coffee deserves the same care. Qahwa brewed with cardamom, and tea served through the day, both taste better with water that has no chlorine and a consistent mineral content. A hot-water outlet fed from the same treated line keeps them on the same standard as the espresso.
We specify reverse osmosis units for coffee preparation as part of a wider food and beverage water plan. To price a branch, Request a Quote.
Heat, tanks, drains and the back bar
Climate and building conditions affect coffee water in ways a temperate-climate manual will not cover:
| Issue | What happens | What to do |
|---|---|---|
| Warm feed water | Water from roof tanks can arrive warm in summer, which speeds up biological growth in filters and housings | Keep housings out of direct sun and change cartridges on time |
| Hot cupboards | Under-counter spaces behind a busy espresso bar get hot | Leave ventilation around RO units and pumps, away from the machine's exhaust air |
| Tank hygiene | A clean treatment system cannot fix a dirty tank | Ask the landlord or facilities team when the building's tanks were last cleaned |
| Drain and power | RO sends part of the feed to drain, and most units need a power point for the pump | Agree the drain position, recovery ratio and socket with the fit-out contractor before the counter is built |
Scale, descaling and the warranty
Where the supply includes harder groundwater, scale builds inside boilers, on heating elements and in solenoid valves. Slow heat-up, unstable brew temperature, weaker steam and slow flow at the group are the usual warning signs. With remineralised RO set to target, descaling becomes an occasional service task, not a routine. Commercial boilers are normally descaled by a technician using the machine maker's method. A branch that needs frequent descaling has a water treatment problem to solve.
Espresso machine makers publish water specifications and commonly exclude damage caused by scale or unsuitable water from their warranties. La Marzocco's warranty terms call water outside its specification the most common reason for machine failure.[9] To protect yourself:
| Step | When |
|---|---|
| Get the machine maker's water limits in writing | Before installation |
| Record the water reading at the group head | The day each branch opens |
| Log every cartridge change, membrane change, descale and reading | Each time, with the date |
| Check the membrane by comparing permeate TDS with the commissioning reading | Each service |
| Keep service reports with the machine's paperwork | Always |
Sovereign Water's maintenance service can take on scheduled filter changes across a group of branches.
Frequently asked questions
Is a simple filter enough for a café espresso machine?
No. A sediment or carbon filter removes particles and chlorine but does not control hardness, TDS or salts, so scale and inconsistent coffee remain.
What does a breakdown cost a Saudi café?
It depends on the machine and supplier. Elements, technician visits and worn parts can reach thousands of riyals a year per branch, plus lost sales for every closed day.
Can I use RO water on its own for espresso?
No. Unblended RO water is too low in minerals. It gives thin, sour shots and can harm some machine parts. Always add blending or remineralisation.
Does RO with remineralisation pay for itself?
For most busy cafés, yes. Preventing one element failure and a few call-outs a year recovers much of the cost, before counting the trade it protects.
How do we keep coffee consistent across branches?
Use RO with remineralisation set to one target at every branch. Record the readings and settings for each site.
Protect your coffee and your reputation
Tell us your city, the number of branches, the machines you use and any taste or scale problems. Our team in the Kingdom will recommend an RO and remineralisation setup and a service plan for each site, and send you a quote.
Sources
[1] Saudi Gazette, "Culture Minister announces celebration of 2022 as the Year of Saudi Coffee": https://saudigazette.com.sa/article/614616
[2] UNESCO, "Knowledge and practices related to cultivating Khawlani coffee beans" (inscribed 2022): https://ich.unesco.org/en/RL/knowledge-and-practices-related-to-cultivating-khawlani-coffee-beans-01863
[3] Gulf News, report on Saudi coffee consumption and café licences, 19 August 2025: https://gulfnews.com/world/gulf/saudi/saudi-arabia-drinks-36-million-cups-of-coffee-daily-320-million-push-to-boost-production-1.500237136
[4] MATEC Web of Conferences (ASCM 2017), paper 05002 on Saudi water supply: https://www.matec-conferences.org/articles/matecconf/pdf/2017/34/matecconf_ascm2017_05002.pdf
[5] Al-Hamzah A. and Fellows C., "Drinking Water Quality in the Kingdom of Saudi Arabia", Water 2024, 16, 1810: https://www.swcc.gov.sa/uploads/water-16-01810%20(3).pdf
[6] SCAA, "Water for Brewing Specialty Coffee" standard (revised 21 November 2009), reproduced at: https://www.urbansaqua.com/wp-content/uploads/2023/09/www.urbansaqua.com-robust-ro-drinking-water-systems-water-standards.pdf
[7] SCAA, "Standard for the Golden Cup" (revised 23 December 2015), reproduced at: https://www.scribd.com/document/428096402/Golden-cup-standard
[8] La Marzocco, water specifications: https://lamarzoccousa.com/wp-content/uploads/2023/09/Water-Specifications.pdf
[9] La Marzocco UK, warranty: https://www.lamarzocco.com/uk/en/warranty/