Undersink Water Filter System in Darwin

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Darwin Undersink Water Filter System

If you're after a clean and clutter-free way to enjoy better water at home, our high-performance undersink water filter systems are a smart solution. At NT Water Filters in Darwin, we supply and install your undersink water filter system so it fits neatly under your kitchen sink—out of sight but always working to deliver fresh, great-tasting water.


These systems are perfect for homes and offices where bench space is limited but water quality is a priority. Our range includes single, twin, and multi-stage setups to suit your water source, whether you're on town supply or bore water.


Choose from standard housings or upgraded models with stainless steel brackets, stylish taps, and high-quality filter cartridges for sediment, chlorine, and odour removal. We'll make sure your system is properly installed, maintained, and matched to your specific needs.


Ready to upgrade your tap water? Call us on 08 8947 2559 to find the right system for your kitchen.

Single Undersink System

Making use of a single 10”x2.5” sub-micron filter, water is filtrated and chemicals, heavy minerals ad bad tastes are removed. These systems do have shorter lifespans than the Double or Triple systems, as there is no sediment pre-filter. However, they are a cost-effective option for small businesses and homes with little bench space.

Dual Undersink System

Our most popular item, and the most commonly used filter in homes around Darwin, the Dual Undersink System, is fitted with an additional sediment filter cartridge along with the sub-micron filter.


By filtering water in 2 stages, it retains a longer lifespan and ensures quality water for your family or staff.

Stage 1: Flowing through the 10”x2.5” sediment filter first, sand, dirt and other sediments are easily filtered out of the water.

Stage 2: Following stage 1, water flows through the sub-micron carbon filter, which removes chemicals, heavy metals, chlorine and bad tastes.

Dual & Chiller Sink System

Enjoy instant access to both chilled and ambient water straight from your sink with our Dual and Chiller Sink Systems. Perfect for homes and offices, these compact units fit neatly under your bench, delivering cold, refreshing water on demand. Designed for efficiency and reliability, they pair seamlessly with high-quality filtration for cleaner, better-tasting water—no bulky bottles or benchtop clutter required.


Stay hydrated the easy way with NT Water Filters’ professional installation and service support.

Triple Undersink System

Designed for areas known for contaminated or bad water supply, the Triple Undersink System can even be built to remove fluoride, copper and lead. It follows 3 stages of filtration to ensure safe water every time.

Stage 1: Water is filtered through the initial 10”x2.5” sediment filter to remove dirt, sand and sediment.

Stage 2:  Using either the 10”x2.5” sub-micron filter or specialty filter, chemicals, chlorine and heavy metals are removed.

Stage 3: Water is filtered through the sub-micron or specialty filter again to ensure clean, safe water.

Hot/Cold System Boiling Billy with Chiller & Filters

Get the best of both worlds with our Boiling Billy Hot and Cold System. This compact undersink unit provides instant boiling and chilled filtered water at the touch of a button—ideal for kitchens, offices and staff rooms.


Equipped with premium filters for clean, great-tasting water, it’s energy efficient and built for everyday use. Enjoy convenience, safety and performance in one smart system, professionally installed and serviced by NT Water Filters.

How do undersink water filtration systems work?

Do undersink systems filter all water in the house?

Can undersink systems be customised to local water conditions?