Clean, filtered and UV-treated water throughout your home

The Waimana Waiora Ultra III is a high-capacity whole-house water filtration system designed for larger family homes, lifestyle blocks and rural properties.

Three 20-inch jumbo filter housings improve water clarity, taste and odour before the water passes through a powerful 48W UV chamber for microbiological treatment. With a flow rate of up to 45 litres per minute, the Ultra III is built for high-demand households where showers, taps, laundry and kitchen outlets may be running at the same time.

Suitable for mains, rainwater tank and bore-water supplies, the Ultra III delivers clean, filtered and UV-treated water to every tap in your home.

The system arrives assembled on a heavy-duty wall bracket and connects using standard 1-inch / 25mm BSP fittings with a 240V power supply.

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Choose Your Configuration

Ultra III

The standard Ultra III features a compact design with the UV chamber mounted above the three filter housings.

This layout provides easy lamp access, efficient use of wall space and a tidy installation. It is designed for indoor or sheltered installations.

Ultra III Shield

The Ultra III Shield offers the same three-stage filtration, 48W UV treatment and 45L/min flow capacity, while adding:

• Protective cover
• Two pressure gauges
• Suitable for indoor and outdoor installation

The pressure gauges make it easy to monitor system performance. A drop in pressure is often the first indication that the filter cartridges are becoming loaded and ready for replacement.

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Why Choose the Waiora Ultra III?

High flow for busy homes

With a maximum flow rate of 45L/min, the Ultra III is designed for larger households where multiple showers, taps, appliances and outdoor water use may occur simultaneously.

Three-stage filtration before UV treatment

Water is thoroughly filtered before reaching the UV chamber, helping improve water clarity while ensuring the UV system is working with cleaner water for maximum effectiveness.

Flow-Activated UV Technology

Unlike conventional UV systems that operate continuously, the Ultra III only powers the UV lamp when water is flowing.

This helps to:

• Reduce electricity consumption
• Extend UV lamp life
• Prevent water warming inside the chamber
• Operate only when treatment is required

It's a smarter, more efficient way to protect your household water.

Chemical-free protection

The 48W UV chamber treats water against harmful microorganisms without adding chlorine or chemicals.

High-capacity 20" jumbo cartridges

Large 20-inch jumbo cartridges provide greater dirt-holding capacity than standard housings, helping reduce maintenance while maintaining excellent flow rates.

Built for New Zealand homes

Designed for:

• Mains water
• Rainwater tanks
• Bore water
• Lifestyle blocks
• Larger family homes

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How the Treatment Stages Work

Stage 1 — 20 Micron Polypleated Sediment Cartridge

Captures larger sediment, rust, dirt and suspended particles, helping protect the finer filtration stages.

Stage 2 — 1 Micron Polyspun Sediment Cartridge

Removes fine sediment, silt and smaller suspended particles down to 1 micron.

Stage 3 — 5 Micron Carbon Block

Improves water taste, odour and clarity while reducing unwanted contaminants before UV treatment.

Stage 4 — 48W UV Chamber

Filtered water passes through the high-output UV chamber where it receives 30mJ/cm² UV treatment to protect against harmful microorganisms without chemical dosing.

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Best Suited For

The Ultra III is ideal for:

• Large family homes
• Lifestyle blocks
• Rural properties
• Rainwater tank supplies
• Bore-water supplies
• Homes with multiple bathrooms
• High-demand households
• Anyone wanting filtered, UV-treated water at every tap

For smaller homes or single-tap filtration, a lower-capacity system may be more suitable.

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Key Specifications

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Ultra III vs Ultra III Shield

Choose the Ultra III for indoor or sheltered installations.

Choose the Ultra III Shield for outdoor installations or when pressure monitoring is preferred.

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Installation

The Ultra III arrives fully assembled on its wall bracket for easier installation.

It connects using standard 1-inch /25mm BSP fittings and requires a standard 240V power supply.

A licensed plumber is recommended. Isolation and bypass valves are also recommended to allow cartridge replacement without interrupting water to the entire property.

Connecting fittings and bypass valves are not included.

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Maintenance

Routine maintenance is simple.

• Replace filter cartridges approximately every 6–12 months, depending on water quality and usage.
• Clean the quartz sleeve whenever the UV lamp is inspected.
• Monitor system pressure and water flow to identify when cartridges require replacement.
• Thanks to the flow-activated UV system, the lamp only operates while water is flowing. This can significantly extend lamp life compared with conventional continuously operated UV systems.
• Replace the UV lamp according to its condition, performance and Waimana's servicing guidance rather than automatically replacing it every 12 months.

For bore-water supplies, we recommend testing your water before selecting any filtration system.

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What's Included

• Heavy-duty wall bracket
• Three 20" jumbo filter cartridges
• 48W UV lamp
• Flow-activated ballast
• Flow switch
• Filter wrench
• Thread tape

Ultra III Shield also includes:

• Protective cover
• Two pressure gauges

Connecting fittings and bypass valves are not included.

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Frequently Asked Questions

What's the difference between the Ultra III and Ultra III Shield?

Both models provide identical filtration performance, UV treatment and flow rate.

The Shield adds a protective cover and two pressure gauges, making it suitable for outdoor installation.

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Is this suitable for a large home?

Yes.

The Ultra III is designed for larger households, lifestyle blocks and high-demand properties where several outlets may be used at the same time.

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What does the Flow-Activated UV system do?

The UV lamp switches on only when water is flowing.

This reduces power consumption, extends lamp life and prevents water warming inside the UV chamber.

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Does the UV lamp need replacing every year?

No.

Because the UV lamp only operates while water is flowing, it can last significantly longer than lamps used in conventional continuously operating UV systems.

Lamp life depends on household water usage and should be assessed according to its condition, performance and Waimana's servicing recommendations.

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Can it be used with rainwater or bore water?

Yes.

The Ultra III is suitable for mains water, rainwater tanks and bore-water supplies operating within the specified pressure and temperature limits.

Because bore-water quality varies significantly, water testing is recommended before selecting a filtration system.

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Does UV add chemicals to the water?

No.

UV treatment disinfects water without adding chlorine or other treatment chemicals.

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How often should the filter cartridges be replaced?

Typically every 6–12 months, depending on your water quality and household water usage.

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Can the standard Ultra III be installed outdoors?

No.

The standard Ultra III should be installed indoors or in a sheltered location.

Choose the Ultra III Shield for exposed outdoor installations.

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Are bypass valves included?

No.

We recommend having your installer fit isolation and bypass valves to make future servicing quicker and easier.