What Is Reverse Osmosis Water Purification?
Reverse osmosis (RO) is the gold standard in water purification technology. It works by forcing water through a semi-permeable membrane with microscopic pores that block virtually all dissolved contaminants — including bacteria, viruses, heavy metals, salts, chemicals, and dissolved minerals.
For Zimbabwean homes and businesses dealing with borehole water containing high TDS, iron, manganese, fluoride, or nitrates, reverse osmosis provides the most thorough purification available. The result is crystal-clear, great-tasting water that meets and exceeds WHO drinking water standards.
Rantex Water supplies, installs, and maintains RO systems ranging from compact domestic under-sink units to large-scale industrial plants capable of treating thousands of litres per hour. Every system is preceded by proper water testing to ensure the correct membrane type and pre-treatment configuration.
Reverse Osmosis for Every Application
From a kitchen countertop to a mining operation, we have the right RO system for your needs.
Domestic RO Systems
Compact reverse osmosis units designed for Zimbabwean homes and small offices. These systems connect to your kitchen tap or a dedicated drinking water faucet, delivering pure, great-tasting water for drinking, cooking, and making beverages. Ideal for treating borehole and municipal water at the point of use.
- Under-sink RO units (100–400 litres/day)
- Countertop RO systems for renters
- Whole-house RO for comprehensive treatment
- Post-mineralisation for taste and health
- 5–7 stage filtration configurations
- Quick-change filter cartridges
Commercial RO Systems
Medium-capacity RO systems for hotels, safari lodges, restaurants, schools, hospitals, and offices. These systems provide a continuous supply of purified water for larger numbers of people, food preparation, beverage production, and facility operations.
- 500–5,000 litres/hour capacity
- Multi-membrane rack configurations
- Automated flushing and monitoring
- Remote performance monitoring
- Pre-treatment packages included
- Stainless steel frame construction
Industrial RO Plants
High-capacity reverse osmosis plants for mines, manufacturing facilities, food processing, and large-scale operations. Custom-engineered for your specific water source, quality requirements, and production volume.
- 5,000+ litres/hour capacity
- Custom membrane array design
- High-recovery configurations
- Process water & boiler feed quality
- Wastewater recovery and recycling
- PLC automation and SCADA integration
What Reverse Osmosis Removes From Your Water
RO membranes have pores as small as 0.0001 microns — thousands of times smaller than a human hair. This allows them to remove virtually all dissolved and suspended contaminants from your water.
How Reverse Osmosis Works
A multi-stage process that delivers the purest water possible from any source.
Pre-Filtration
Sediment and activated carbon pre-filters remove particles, chlorine, and organic compounds. This protects the delicate RO membrane from damage and fouling, extending its lifespan significantly.
RO Membrane Separation
Water is pressurised and forced through semi-permeable RO membranes with pores as small as 0.0001 microns. The membrane rejects up to 99% of dissolved contaminants including salts, bacteria, viruses, heavy metals, and chemicals.
Post-Treatment & Polishing
Purified water passes through a final polishing filter for taste improvement. Many systems include a mineralisation cartridge that adds back beneficial calcium and magnesium for healthy, great-tasting water.
Storage & Delivery
Purified water is stored in a pressurised tank (domestic) or holding vessels (commercial/industrial) and delivered on demand through your taps, dispensers, or process pipework.
Reverse Osmosis FAQs
Common questions about RO water purification in Zimbabwe
Request an RO System Quote
Describe your water source, daily usage, and any known water quality issues. We'll recommend the right reverse osmosis solution and provide a competitive quote.