Compact Reverse Osmosis Drinking Water System
3-Stage | Undersink | For Homes with Whole-House Filtration
This compact reverse osmosis (RO) drinking water system is designed specifically for homes with an existing whole-house water filtration system.
When a whole-house filter is installed, the initial sediment and carbon pre-filtration stages normally required for reverse osmosis are already handled upstream. This allows the RO system to be simplified to its core purification stages, resulting in a smaller footprint, fewer filters, and easier long-term maintenance.
Important requirement
This system is not a standalone reverse osmosis unit.
It is intended to be installed after a whole-house filtration system, which acts as the pre-filtration stage.
If you do not have whole-house filtration installed, we recommend our 5-Stage Reverse Osmosis Drinking Water System instead.
What this system does
This compact RO system provides high-purity drinking and cooking water from a dedicated tap at your kitchen sink.
By focusing on the core RO stages, it delivers clean, great-tasting water while reducing filter count, replacement frequency, and under-sink space requirements.
Filtration stages (overview)
Stage 1 – Inline carbon filter
Coconut shell carbon block filter designed to reduce chlorine and chemical disinfectants, protecting the RO membrane.
Typical replacement: 12 months.
Stage 2 – Reverse osmosis membrane (75 GPD FilmTec)
Core purification stage designed to reduce dissolved salts, heavy metals, fluoride, and a broad range of contaminants.
Typical replacement: 3–4 years.
Stage 3 – Remineralisation (alkalising) filter
Restores minerals such as calcium, magnesium, and potassium, gently elevating pH and improving taste.
Typical replacement: ~2 years.
Key features
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Compact 3-stage reverse osmosis system
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Designed for homes with whole-house filtration
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Smaller footprint than traditional RO systems
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Dedicated filtered water tap
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NSF-certified components
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Suitable for Australian mains water when pre-filtered
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Designed for drinking and cooking water only
Supply & installation
This product is supplied as a drinking water filtration system.
Professional installation is available for customers located within:
Installation is arranged separately and pricing may vary depending on site conditions.
Who this system is for
This system is ideal if you:
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Already have a whole-house water filtration system
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Want a compact RO solution at the kitchen sink
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Prefer fewer filters and lower long-term maintenance
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Want high-purity drinking water without a large undersink system
