Description
The 800 GPD Fast-Flow RO System is a tankless under-sink purifier with built-in TDS monitoring. A digital display shows the total dissolved solids of the incoming water and the purified water, so you can see exactly how well the system is working. When readings start to rise, you know it is time to change filters, long before taste changes.
At around 800 gallons per day, it delivers fast flow for busy family kitchens.
Why TDS monitoring helps in Oman
Homes in Muscat may switch between network water and tanker deliveries, and TDS can change significantly. A live reading shows you this immediately and confirms the RO is coping. It also gives peace of mind that the water your family drinks is genuinely purified.

Key features
- Around 800 GPD rated output
- Digital display for feed and product TDS
- Tankless direct-flow design
- Filter-life alerts
- Automatic membrane flushing (model dependent)
- Compact under-sink body
Typical specifications
| Capacity | Approx. 800 GPD |
| Monitoring | Inlet and outlet TDS display |
| Storage | None |
| Power | 220–240 V |
| Installation | Under-sink, dedicated faucet |
Who it suits
The 800 GPD Fast-Flow RO System suits families who want both speed and visibility of water quality, and owners who like to know exactly when service is due. Compare with other models in our reverse osmosis systems range. For background on TDS, see Wikipedia.
Frequently asked questions
What TDS should I expect? Good RO water in Muscat usually reads well under 50 ppm.
Do you service it? Yes, Farz Water offers filter replacement and AMC visits.
Why buy the 800 GPD Fast-Flow 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 800 GPD Fast-Flow 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 800 GPD Fast-Flow RO System in Oman
Farz Water supplies and installs RO systems across Oman. Contact us or call / WhatsApp +968 9455 4533.







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