6W UV Water Steriliser - Electronic Ballast, Stainless Steel Chamber, 5 LPM NZ

UV-treated water at the point of use — without adding chemicals or changing the taste of your water.

This 6W UV water steriliser uses a high-grade stainless steel chamber and UV lamp to treat water against harmful micro-organisms including bacteria and viruses such as E. coli and Salmonella. The electronic ballast powers the UV lamp and controls system diagnostics, with a visible and audible alarm if lamp power fails.

Suitable for mains, rainwater, and tank water supplies. Well suited to underbench installations, baches, and anywhere a compact, reliable UV treatment unit is needed at a single point of use.

Connection fittings are not included. The inlet and outlet are 6mm. Standard 6mm fittings are available separately — get in touch if you need help selecting the right fittings for your installation.

Key specs at a glance

• UV output: 6W
• Recommended flow rate (30 mJ/cm²): 5 LPM
• Maximum flow rate (16 mJ/cm²): 9 LPM
• Chamber: High-grade stainless steel
• Lamp: Hard glass UV lamp
• Inlet/outlet: 6mm
• Temperature range: 2–40°C
• Lamps: 1
• Alarm: Visual and audible lamp power failure alarm
• Warranty: 2 years

Why homeowners choose this unit

• UV treatment deactivates bacteria and viruses — no chemicals added, no change to water taste or chemistry
• Stainless steel chamber — durable and easy to maintain
• Electronic ballast with lamp failure alarm — know immediately if the lamp needs replacing
• Compact 6W unit — suited to point-of-use and low-flow applications
• Water-resistant power supply

How it works

UV water sterilisers work by exposing water to ultraviolet light as it passes through the stainless steel chamber. The UV light disrupts the DNA of micro-organisms, preventing them from reproducing. At the recommended flow rate of 5 LPM, the system delivers a UV dose of 30 mJ/cm² — the level recommended for effective drinking water treatment. The electronic ballast powers the lamp and monitors lamp output, triggering a visible and audible alarm if power to the lamp drops.

Technical specifications

What's in the box

• UV6 stainless steel chamber, fully assembled
• UV lamp (pre-fitted)
• Quartz tube
• Electronic ballast
• Seals
• Mounting clamps
• Power cable

Questions

What does the UV lamp actually do?

The UV lamp emits ultraviolet light inside the stainless steel chamber. As water flows past the lamp, the UV light disrupts the DNA of bacteria and viruses — including E. coli and Salmonella — preventing them from reproducing. No chemicals are added and the taste and chemistry of your water are not affected.

How do I know the flow rate that's right for my home?

The UV6 is rated at 5 LPM at the recommended 30 mJ/cm² UV dose — this is the level used for effective drinking water treatment. The unit can handle up to 9 LPM at 16 mJ/cm², but at higher flow rates water spends less time in the chamber and receives a lower UV dose. For drinking water treatment, do not exceed 5 LPM.

Are connection fittings included?

No — connection fittings are not included. The inlet and outlet are 6mm. Standard 6mm fittings are available separately. Get in touch and we'll help you select the right fittings for your plumbing setup.

Do I need a surge protector?

It's a good idea. UV ballasts are sensitive to power fluctuations, and a surge protector adds a layer of protection for the electronics. We recommend fitting one as part of the installation.

How often do I need to replace the UV lamp?

UV lamp output degrades over time even when the lamp still appears to be glowing. Replace the lamp annually to ensure the unit continues to deliver an effective UV dose. The electronic ballast will trigger a visible and audible alarm if lamp power drops — but annual replacement is the best practice regardless.

Do I need a plumber to install it?

For most customers, yes — a licensed plumber is the safest path. That said, the UV6 arrives fully assembled, uses 6mm fittings, and plugs into a standard power outlet. If you're confident with household plumbing, the installation is straightforward. If you're not sure, get in touch and we'll help you decide.

Is it suitable for rainwater or tank water?

Yes — the UV6 is suitable for mains, rainwater, and tank water supplies. UV treatment is particularly valuable on rainwater and tank supplies where microbial contamination is a greater risk than on treated town water. As a point-of-use unit, it treats water at the specific tap or appliance it's connected to, not the whole house.

Do I need a sediment pre-filter?

UV treatment works best when water is clear — turbid or sediment-laden water can shield micro-organisms from UV light and reduce treatment effectiveness. If your supply carries sediment, fitting a sediment pre-filter before the UV unit is strongly recommended.

Do I need bypass valves?

Bypass valves are not included but are recommended as part of a good installation. They allow you to isolate the UV unit for lamp replacement and servicing without interrupting your water supply.

What warranty applies?

The UV6 carries a 2-year warranty. The UV lamp is a consumable and is not covered by the warranty — replace it annually as part of routine maintenance.