Description
The 7-Stage Alkaline Mineral RO System combines full reverse osmosis purification with extra stages that add minerals and raise pH. The result is water that is clean and safe, yet tastes fuller than plain RO water. A compact frame allows it to be mounted on a wall, in a utility room or under the sink, which makes it flexible for apartments, hotel rooms and offices where cabinet space is limited.
The seven stages
- Sediment filter – sand, rust and silt
- GAC carbon – chlorine, taste and odour
- CTO carbon block – fine chlorine removal
- RO membrane – dissolved salts, heavy metals, microorganisms
- Post carbon – taste polishing
- Mineral cartridge – adds calcium and magnesium
- Alkaline / pH stage – raises pH for a smoother taste

Key features
- Seven stages with RO, mineral and alkaline cartridges
- Wall-mount or under-sink installation
- Pressure storage tank for instant water
- Standard replacement cartridges
- Optional booster pump for low-pressure supplies
Typical specifications
| Stages | 7 |
| Membrane | Residential RO, 75–100 GPD class |
| Storage | Pressure tank (approx. 3.2 gallon) |
| Mounting | Wall or under-sink |
| Feed water | Municipal, tank or tanker water |
Where it is used
The 7-Stage Alkaline Mineral RO System suits family kitchens, hotel and serviced apartment pantries, clinics and small offices in Muscat. Hotels like that it can be mounted neatly out of sight while still giving guests great-tasting water. Compare with our 6-stage and tankless models in the reverse osmosis systems range. For background on RO, see Wikipedia.
Maintenance
Change pre-filters every 6 months, post, mineral and alkaline cartridges every 12 months, and the membrane every 2 to 3 years depending on water quality.
Frequently asked questions
Is alkaline water necessary? It is mainly about taste. RO alone gives safe water; the extra stages make it taste better to many people.
Can it go in a hotel room? Yes, compact wall mounting suits pantries and service areas.
Why buy the 7-Stage Alkaline Mineral RO System from Farz Water?
Farz Water is a water treatment supplier based in Muscat, serving homes, businesses and projects across the Sultanate of Oman. When you choose the 7-Stage Alkaline Mineral RO System from us, you get more than a product in a box. Our team checks your water and site conditions first, so the equipment you buy matches your actual needs instead of a generic catalogue size. We explain the options honestly, including when a simpler or lower-cost solution will do the job.
We stock common spares and consumables in Muscat, so filters, lamps, membranes and fittings are available when you need them. Our technicians install and commission equipment, show you how to operate it, and return for scheduled service if you choose an annual maintenance plan. If anything is not working as expected, you can reach us directly by phone or WhatsApp and speak to someone who knows your system.
Order the 7-Stage Alkaline Mineral RO System in Oman
Farz Water supplies, installs and services RO systems across Oman. Contact us or call / WhatsApp +968 9455 4533.







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