What We Do
Zwem designs filtration systems that make natural swimming pools crystal clear, without chlorine or chemical dosing. We combine horizontal-flow biological filtration with phosphate removal to deliver naturally clean water with low energy consumption and quarterly maintenance. We’re the specialists who make the water work.
What We Bring
Our systems combine proven horizontal-flow biofiltration, phosphate removal, and continuous circulation to deliver clear, natural swimming water.
Designed for low energy consumption at approximately 165 W, with quarterly servicing, our system is built to maintain water quality reliably over time.
We are the specialists who engineer water that looks and feels like a mountain stream, supported by a service model designed to keep it that way.
Low maintenance by design: no daily chemical dosing, no backwashing, and no constant water testing. Your only routine task is emptying the skimmer basket, the same as any pool. A weekly 20 second auto-flush keeps the mechanical stage clear, and a quarterly service visit handles the rest.
Two configurations
The standard Zwem system uses a submerged pump inside the filter box. This is the quietest configuration, but it means traditional suction-side cleaners cannot be used, a robotic cleaner is needed to maintain optimal conditions.
If you prefer to use a suction-side cleaner, we offer a pump-fed configuration with a self-priming pump at deck level. This allows a traditional cleaner to operate, at the cost of a slightly louder pump and a different installation layout.
Technology
A continuous circulation system
A stable system is not achieved periodically. It is maintained in motion. Water leaves the pool, passes through three treatment stages and returns balanced, around the clock.
Inspired by natural systems: the filter processes waste biologically and removes the nutrients that feed algae, rather than correcting problems after they appear.
- Mechanical filtrationThe brush box captures leaves, hair, and large debris before the water reaches the biological stage.
- Biological filtrationBeneficial bacteria in the foam media process organic waste continuously, in the same horizontal-flow filter.
- Nutrient polishing (GFO)Dedicated GFO vessels strip residual phosphate for long-term clarity. One vessel for pools up to 30,000L, scaling up to 90,000L with three vessels in the same box.
- Clean returnBalanced water re-enters the pool and the loop starts again.
Removes fine particles and suspended matter.
Beneficial bacteria break down organic waste continuously.
Continuous flow. Balanced system.
A Different Category
| Zwem pool | Chlorine Pool | Natural Pool | |
|---|---|---|---|
| Water treatment | Biological | Chemical | Plant-based |
| Water clarity | High / architectural | High | Variable |
| Maintenance style | Managed system | Constant adjustment | Seasonal / manual |
| Water feel | Soft / neutral | Chemical | Natural |
| Space requirement | Compact | Compact | Large |
| Water usage | Low, no backwash, only a brief auto-flush | High (backwashing) | Medium |
| Energy usage | Low | High | Low |
| Aesthetic | Clean / modern | Standard | Organic / pond-like |
Get in touch
Share a few details about your pool. We will reply with the next steps and answer any questions about the system.
Web: zwem.co.za
Area: Western Cape, South Africa