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Introduction

Integrated filtered water systems are now a common feature in kitchens and workplace amenities. Their specification is typically guided by visual integration, spatial efficiency and perceived sustainability outcomes. Convenience also shapes selection, as users increasingly prefer immediate access to filtered tap water over relying on packaged plastic bottles. While these drivers are valid at the design stage, they tend to offer limited insight into how systems will perform under sustained use.


In operation, users perceive the performance of filtered water systems in terms of cost, reliability and consistency of water quality. Maintenance and replacement requirements quickly become key considerations. Central to this is the performance of water filters. As filters age, their capacity declines and performance becomes less predictable. If this is not anticipated, it can lead to reduced water quality, interruptions to supply and increased maintenance intervention.


Filters are not static elements within a system. Filtration media are designed to interact with contaminants and, in doing so, their performance can change over time. Chemical, physical and biological processes all affect flow rates, filtration efficiency and hygiene conditions.
This paper examines the behaviour of filtration media over its service life, including factors that influence degradation, hygiene risk and replacement cycles. In doing so, it highlights the key considerations designers and specifiers must address to ensure the successful adoption and use of filtered water systems well beyond installation.

Understanding filtered water systems

Filtered water systems are multi-component systems that consist of a tap, an under-bench unit and a filtration device.


At the point of use, the dispenser controls water delivery, while filtration occurs upstream within the unit through a sequence of stages targeting specific contaminants. Sediment pre-filters remove suspended particles such as sand, rust and debris, protecting downstream components from blockage and wear. Activated carbon filters are often used as the primary treatment, adsorbing chlorine, volatile organic compounds and substances affecting taste and odour. Sub-micron filtration delivers a further level of refinement, capturing smaller particles and, depending on the rating, some bacteria and cysts.


Leading systems have been proven to remove a broad range of contaminants that affect water quality, taste and safety. For example, Billi filtration systems are designed to reduce chlorine, sediment and certain heavy metals, while fine filtration down to 0.2 microns enables the removal of parasitic cysts such as Cryptosporidium and Giardia. Depending on the filter configuration, these systems can also address emerging concerns such as microplastics, with new filtration media being developed to target contaminants like PFAS (per- and polyfluoroalkyl substances).


Heating and cooling functions are often integrated within the same system. Systems such as those developed by Billi combine filtration with the delivery of chilled and boiling water using advanced underbench technology. Key technologies include heat exchange for energy efficiency and water-cooled units that eliminate the need for cupboard ventilation.


Modern systems also include monitoring features such as usage counters, time-based alerts and diagnostic indicators as well as integrated digital solutions for tracking filter life, service history and warranty status. These tools support timely filter replacement and early fault detection.

How filtration performance changes over time

Filtered water systems rarely fail suddenly. Instead, their effectiveness declines gradually through normal use.


The first form of decline relates to filter performance. As filters accumulate captured contaminants, both flow and filtration efficiency begin to reduce. Flow rates may slow and pressure resistance can increase. At the same time, the filter becomes less effective at removing contaminants. This can affect chlorine, volatile organic compounds, heavy metals and sediment. Finer filtration may also decline, including the removal of parasitic cysts at sub-micron levels. As the media approaches saturation, performance against emerging contaminants such as microplastics and PFAS (including PFOA and PFOS) may also be reduced.


A second mode of decline relates to internal conditions within the filter. Once in service, filters become wet environments that can support biological activity. Biofilm can form within stagnant areas of the media, while microbial colonisation may occur over time. Sediment accumulation can also affect internal pathways, valves and seals, increasing wear and restricting flow. In some cases, trapped contaminants may contribute to localised corrosion or material degradation within the system.


The final stage is contaminant breakthrough. As the filtration media reaches capacity, its ability to retain contaminants diminishes. Previously captured substances may begin to pass through or, in some cases, be released back into the water stream. At this point, water quality can become inconsistent despite the system appearing to operate normally.

Thermal conditions affect reliability


Filtered water systems generate heat during operation, which must be managed to maintain performance, hygiene and long-term reliability. Without adequate ventilation and cooling, heat can build up within cabinetry or service zones, which can accelerate filter degradation, promote microbial growth and place additional strain on system components.


Cooling design determines how this heat is managed within the system. Air-cooled units dissipate heat into surrounding cabinetry and rely on ventilation openings or grilles to maintain safe operating temperatures. Where ventilation is limited, heat can accumulate within enclosed joinery, reducing system efficiency and placing additional stress on components. Elevated cabinet temperatures can increase the risk of bacterial growth and biofilm formation within filter media.


Water-cooled systems transfer heat away from the unit through water flow in a similar way to how human bodies manage heat through circulation and sweat. This reduces heat build-up within cabinetry and removes the reliance on ventilation cut-outs. Modern boiling and chilled systems from Billi adopt water-cooled technology, which can also reduce operational noise and improve energy efficiency over extended use. More stable internal temperatures support consistent filtration performance and help extend component life.

Filters have a shelf life

Filter lifespan is governed by both the volume of water treated and time in service. As explained above, filtration media changes throughout its operational life. Even in low-use conditions, water can remain stagnant within the filter, disinfectant residuals dissipate and microbial activity may develop.


As filters age, contaminant removal declines and performance becomes less predictable. Previously captured materials may pass through or be released back into the water. This reinforces that filtration systems rely on ongoing maintenance and planned replacement to maintain required levels of hygiene
and performance.

Filtered water systems rarely fail suddenly.
Instead, their effectiveness declines gradually through normal use.

Maintenance behaviour is a user experience consideration

Maintenance is as much a user experience consideration as it is a matter of functionality or technical knowledge. A well-designed filtered water system should enable and encourage appropriate maintenance behaviours.


Common issues that influence maintenance behaviour:

These behaviours are influenced by decisions made at the design and specification stage. These issues
can be mitigated by the following considerations:


How Billi designs for reliability

For more than three decades, Billi has led the global market with innovative tapware and instant boiling and chilled water filtration systems. Proudly Australian-made and designed, Billi products are celebrated for their combination of functionality, performance and contemporary aesthetics.

Filtered water systems must anticipate declines in filtration performance over time. Billi addresses this by embedding reliability controls into the system itself.

From passive alerts to active monitoring


Rather than relying on user memory or simple indicator lights, Billi systems incorporate filter tracking based on both usage and time. Metrics such as cup count and elapsed days trigger alerts based on actual operating conditions. Visual indicators provide early warning as filters approach replacement, followed by clear “filter change due” notifications once limits are reached. This reduces both premature replacement and delayed servicing, aligning maintenance with real system demand.


Supporting this, Billi is implementing QR code integration, which allows users to quickly access unit serial numbers, technical documentation and service information. This new functionality will enable faster customer support while improving the accuracy and completion of warranty registration.


Built-in protection guarantees water quality


Billi systems incorporate RFID-enabled filter recognition technology to maintain water quality and prevent operation outside validated treatment conditions. Each filter contains an embedded RFID chip linked to the specific unit, allowing the system to verify correct installation and track the filter’s approved service life. Once the filter reaches the end of its recommended replacement cycle (typically between 6 to 12 months), the system issues an alert and restricts normal operation until the correct replacement filter is installed. This lockout functionality helps prevent expired or incompatible filters from being reused, reducing the risk of cross-contamination and ensuring ongoing filtration performance.


Thermal stability for greater reliability


Thermal management is integral to system reliability. Billi’s water-cooled technology transfers heat away via the plumbing system rather than into surrounding cabinetry. This stabilises internal temperatures, reduces reliance on joinery ventilation and eliminates the need for cabinet cut-outs. More stable thermal conditions support consistent filtration performance, reduce biological risk and improve component longevity, while also contributing to lower noise and improved energy efficiency.


These outcomes also align with broader indoor environmental quality objectives. Thermal and acoustic comfort are recognised as key considerations within the Green Building Council of Australia’s Green Star Buildings and Fitouts framework, reflecting the importance of building systems that support occupant wellbeing and overall environmental performance.


Building serviceability into the system


Reliability is further supported through clear serviceability and lifecycle planning. Systems are designed with accessible cartridge replacement, defined service intervals and integrated tracking mechanisms that support ongoing maintenance. Billi reinforces this with structured aftercare, including a standard 3-year warranty and optional Billicare service plans extending coverage up to 5 years, providing scheduled maintenance and ongoing system support.

Billi filters

The Billi filter range offers solutions suitable for a range of water quality conditions and performance
requirements:

Article Author: Architecture & Design
Website: https://www.architectureanddesign.com.au

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Over the past 18 months, Billi has achieved a number of significant milestones that have strengthened the business and positioned it for future growth.

From investing in a world-class manufacturing facility to expanding our capabilities and growing our presence across key international markets, we have continued to build on our reputation as a leader in premium drinking water solutions.

These achievements have been driven by a clear focus on innovation, operational excellence and delivering exceptional outcomes for our customers, partners and distributors.

Today, Billi is stronger than ever, with a talented team, growing international opportunities and a clear vision for the future.

As demand continues to grow for sustainable, premium drinking water solutions around the world, Billi is entering its next phase of growth with a renewed focus on international expansion and long-term value creation.

As part of this next chapter, the business has also evolved its leadership structure to support its future ambitions.

We would like to acknowledge and thank Guy Nicholls for his contribution to Billi over the past 18 months. During his time with the business, Guy played an important role in supporting growth, strengthening the organisation and helping position Billi for future success. We wish him every success in his next chapter.

We are also pleased to welcome Rachel Pallett back to the business as CEO of Billi Global Group. Having previously been part of the Billi journey, Rachel brings a deep understanding of the business, our customers and our growth opportunities. Her return provides continuity, experience and strong leadership as we continue to build on the momentum already achieved.

While leadership transitions are a natural part of business evolution, Billi’s strategic direction remains unchanged. Our commitment to innovation, manufacturing excellence, customer experience and sustainable growth continues to guide everything we do.

Looking ahead, our focus remains clear:

To our employees, customers, distributors, suppliers and industry partners, thank you for your continued support.

We are proud of what has been achieved and excited about what comes next.

The next chapter for Billi is already underway.

Water quality in Western Australia (WA) is carefully managed (Government of Western Australia), but what reaches your kitchen tap can still vary in ways that affect taste, consistency, and everyday use.

Across the state, drinking water comes from a mix of dams, groundwater, and desalination (Water Corporation). Perth’s supply is supported by major catchments, and ongoing public discussion around areas such as Serpentine Dam (Catchment Area, PDF) shows how closely water security is monitored. That context matters because people are thinking about whether water meets regulatory standards, how it tastes, how it performs in cooking, and whether it’s good to drink every day.

With more than 30 years of experience designing and manufacturing instant filtered boiling and chilled water systems in Australia, Billi brings a practical understanding of water conditions and modern expectations. For households and workplaces considering water quality in WA, our experience includes extensive local history.

Why drinking water in WA can taste different at home or work

Municipal water can be well managed and still taste different once it reaches a particular property or kitchen tap. Internal plumbing, storage conditions, and the age of pipework can all influence the day-to-day experience at the tap. Often, the difference is subtle such as a faint chlorine aftertaste, tea that lacks clarity, or cold drinks that do not feel as crisp as expected.

The questions are rarely whether the public supply is safe. It is whether the taste and quality of that water could be improved when and where it is used.

Why filtration matters at the point of use

A well-designed filtration system is about consistency. Point-of-use filtration helps refine water at the moment you use it, which is why it has become a considered addition in both homes and workplaces.

Billi’s systems are designed around advanced multi-stage filtration technology. Depending on the cartridge selected, filters are designed to reduce chlorine, taste and odour, while specific filters also remove parasitic cysts. Noting sediment filtration cartridges are designed for particulate reduction only. This understanding allows users to know what their system is designed to do, without overstatement.

For anyone researching water filtration in Western Australia, the benefits are straightforward. Water that tastes better, greater consistency from glass to glass, and a more reliable result for everything from cooking to everyday hydration.

How Billi filtration supports better everyday water use

Our approach to filtration is shaped by performance and practicality. Through our partnership with BWT and the use of Fibron X technology, the focus is on delivering reliable results over time. This translates into everyday advantages such as:

The practical appeal of underbench water filtration systems

Convenience plays a large role in how people use water. When access is simple, habits tend to improve. This is a key reason why underbench water filtration systems continue to gain attention across WA.

Billi systems are designed with a compact footprint, helping maximise valuable cupboard space. Many water-cooled models do not require cupboard ventilation cut-outs or grilles, which simplifies installation and keeps cabinetry intact. The ability to access filtered boiling, chilled, sparkling, and still water from a single system also adds a level of flexibility that suits both homes and workplaces.

For those comparing options, the difference often comes down to practicality. A jug filter requires refilling and waiting, while an underbench system integrates filtered water into the normal flow of the day. Explore the full product range to see how these options can be configured for different spaces.

Common reasons people hesitate and what to consider

It is natural to question whether filtration is necessary. Australian tap water is regulated and generally safe to drink, so some people wonder whether a system adds real value. Others are concerned about maintenance, installation, or available space.

Servicing and filter changes support long-term performance

Ongoing performance depends on regular care. Instant filtered water systems require maintenance and filter replacement to operate effectively, therefore we aim to make this process as easy as possible with BilliCare Service Plans.

Users can choose between Gold and Silver options, each designed to simplify maintenance:

For relevant systems, the service plans can include an environmentally sustainable approach to CO₂ cartridge replacements.

Sustainability matters in WA homes and workplaces

Water use is increasingly linked to broader sustainability goals, particularly in Western Australia where resource management is a constant consideration. Our systems are designed with this in mind.

Heat exchange technology allows the system to reclaim energy during operation, improving efficiency without compromising performance. Water-cooled systems also operate quietly and without the need for additional ventilation, which contributes to both usability and energy management.

For homes and offices looking to reduce reliance on bottled water, underbench systems offer a more sustainable alternative over time. For projects requiring certification, it is worth noting that the Quadra range holds Global Greentag certification.

Learn more about our sustainability commitments to understand how these systems align with broader environmental goals.

Better water quality starts with informed choices

Water quality in WA is managed at scale, but the experience of water from the kitchen tap is personal. By understanding how water can vary at the point of use, it becomes easier to see where filtration fits into everyday life.

Improving water quality is about choosing consistency, convenience, and performance where it matters most. With Australian design, long-term reliability, and a focus on efficiency, our systems offer a practical solution to achieve that balance.

Take the next step towards better water at your tap. Explore our range or visit your local Billi stockist to find a system that works for your home or workplace.

Billi is proud to support the Pickles and Magpies teams from Churchlands Senior High School WA for the 2026 Pedal Prix season.

Pedal Prix is a student endurance racing program where teams design, build, maintain and race human-powered vehicles in long format team events. The program gives students practical experience in engineering, teamwork, problem solving and endurance while encouraging collaboration both on and off the track.

The opening round in Bunbury WA brought together students, teachers, volunteers and families for a successful day of racing and learning.

With vehicles running strongly throughout the event, students worked together across driving, mechanical support, strategy and team operations to keep everything moving smoothly during the 14-hour race day.

Programs like Pedal Prix create valuable opportunities for students to apply classroom learning in a real world environment.  Students develop practical technical skills while also building resilience, communication, leadership and teamwork through shared challenges and competition.

At Billi, innovation and continuous improvement are central to our culture. As a company with a strong focus on engineering, product development and in house research and development, we are passionate about supporting programs that encourage students to explore practical problem solving and hands on learning experiences.

Billi’s sponsorship helps support team operations across the season and contributes towards equipment, maintenance, race preparation and reducing participation costs for students.

We congratulate all students, staff, volunteers and families involved in the Bunbury event and look forward to following the Churchlands Senior High School teams throughout the 2026 Pedal Prix season.

Media Contact: 

 
Christy Minutoli 
Marketing Manager ANZ 
christy.minutoli@billi.com.au 

Royce Tan
Marketing Coordinator – Brand & Content
royce.tan@billi.com.au 

Safety, Quality, and Sustainability: Billi Group’s ISO Journey

At Billi, we believe in our rallying mantra of “The Power of One”—it is an apt call to unite our expanding influence as a global company. Following our recent relocation to our new headquarters and factory office in Reservoir VIC, we are proud to announce that our commitment to excellence at this fit-for-future facility has been officially re-certified. 

At the end of 2025, Billi Australia successfully completed a comprehensive audit with BSI Global. This audit was a critical step in updating our certifications to reflect our new operations, ensuring that our management systems remain world-class as we expand our manufacturing and distribution capacity. 

A Message from Leadership 

In recognition of our ongoing dedication to these standards, David Gardiner, Billi WHS Manager ANZ, shared his thoughts on the importance of this milestone: 

“For this World Day for Safety and Health at Work, Billi reaffirms our commitment to ISO 9001, 45001 & 14001 – Work Health and Safety standards. By embedding safety into every process, we ensure the wellbeing of our people, partners, and customers every day.” 

What Does ISO Mean? 

While many recognise the name, few know its origin. ISO is the short name for the International Organisation for Standardisation. It is not an acronym, but a name inspired by the Greek word isos, meaning “equal”. This reflects a global mission to create consistency and equality in standards worldwide, regardless of language or location. 

(*reference: https://www.iso.org/about)  

The Gold Standard: Billi’s Certified Systems 

The recent audit was rigorous, covering three vital pillars of our business operations:

A Perfect Result 

“We are thrilled to share that the audit was completed with zero findings. Our certifications have been officially updated to our new address, confirming that our new facility operates at the highest possible global standards. 

By meeting the ISO 45001 standard, we have proven our commitment to a safe workplace for everyone. Likewise, our ISO 14001 certification underscores our ‘duty of care’ as we navigate our global impact and sustainability goals.” 

Driven by the “Power of One” 

This achievement is a direct result of the dedication and collaboration of the entire Billi team. As we progress through 2026, these certifications provide the solid foundation needed to present a single, strong, and safe front to our partners and customers worldwide. 

Together, we are embedding best practices into every tap we manufacture and every system we design, ensuring that sustainability and safety remain at the forefront of the Billi legacy. 

About Billi Australia 
For over 35 years, Billi has been designing and manufacturing premium instant boiling, chilled and sparkling filtered water systems in Australia. Renowned for quality, innovation, and timeless design, Billi products are specified by leading architects and designers and trusted by homeowners who demand the very best. 

Media Contact: 

 
Christy Minutoli 
Marketing Manager ANZ 
christy.minutoli@billi.com.au 

Royce Tan
Marketing Coordinator – Brand & Content
royce.tan@billi.com.au 

Empower sustainable specification with Billi’s Quadra and Quadra Plus.
Featuring high RPV scores and robust Green Star Fitouts compatibility, these systems simplify achieving credits across key categories – helping specifiers meet targets and advance Australia’s transition to a greener built environment.

 

The pursuit of a sustainable built environment is a journey driven by uncompromising vision, unwavering commitment and bold action. Yet, the milestones along the way are not marked by lofty ideals alone – they’re punctuated by the tangible reality of numbers, documents and meticulously measured metrics. This is especially true when navigating the complexities of sustainability certifications and ratings – but the sheer volume of data associated with specified materials and products can feel particularly overwhelming.
And so, with the new Green Star Fitouts rating tool’s launch as a backdrop, we explore how specifiers can strategically consider product selection to achieve tangible results within the established frameworks used today and – through the lens of Billi’s Quadra and Quadra Plus systems – answer a fundamental question: why are product sustainability metrics essential in facilitating this process?

ACHIEVING CREDITS THROUGH SUSTAINABLE SPECIFICATION

Industry professionals will be familiar with the Green Star Buildings rating tool, a fundamental device on the path to Green Star certification. And now, sharing the same methodology, the Green Star Fitouts rating tool is set to roll out, evolving its Green Star Interiors counterpart and raising the bar on carbon, well-being and circularity.
The tool is set to provide a framework to achieve a rating by accumulating credits across five different categories: Circular, Responsible, Healthy, Positive and People. It will set out specific criteria to assess whether – and how well – a project is meeting the credit outcome, falling into one of the performance levels: Minimum Expectation, Credit Achievement and Exceptional Performance.

THE VALUE OF THE RESPONSIBLE PRODUCT VALUE (RPV)

Architects, designers and specifiers will need to demonstrate that the products they specify meet outlined sustainability benchmarks, and a crucial mechanism that will help them assess a product’s contribution to the credits will be the Responsible Product Value (RPV).
An RPV is calculated based on an initiative’s ability to meet criteria that sit across the Responsible, Positive, Healthy and Circular categories. Each of these carries a fixed-point value, and their sum amounts to the product’s total RPV.

HIGHER RPV, HIGHER POTENTIAL: THE QUADRA EXAMPLE

Specifying products with an RPV may contribute towards achieving the Responsible products credits, and Billi’s Quadra and Quadra Plus systems – with an RPV of 19 – are an excellent showcase of that methodology. Their RPV score is based on their Global GreenTag product-specific EPDs – worth 7 points – and their Global GreenTag LCARate Gold certification – which is worth 12 points.

THE GREEN STAR RESPONSIBLE PRODUCTS FRAMEWORK

While the Fitouts tool is yet to be rolled out, the mechanism for assessing products against these categories is already well-established in the Green Star Buildings tool, providing a framework outlining how a product’s metrics can translate into tangible outcomes and ratings.
Quadra and Quadra Plus can contribute to achieving the Responsible Products credits in Green Star. In the Green Star Buildings rating tool, the RPV of 19 allows them to contribute to achieving credits in the Responsible Systems category, placing them in the Exceptional Performance tier with a required minimum RPV of 11 at a product level.

THE ALL-ELECTRIC BENEFITS

As all-electric units, the Quadra and Quadra Plus systems can also help pursue goals related to fully electric and fossil-fuel-free outcomes, which might require the project to use electricity to power heating and cooling, domestic hot water and cooking.

HEALTHY, LOW-TOXIN MATERIALS

Both systems contain no VOCs or BPA and are Watermark and WELL-certified. In addition, the Gold Level certification under Global GreenTag standards, along with the maximum score for Health & Toxicity the products achieve, further highlights the system’s potential to help support obtaining relevant outcomes within existing frameworks.

WATER EFFICIENCY
In addition, Quadra and Quadra Plus systems’ WELs ratings and flow rates – ranging from 5 stars and 5 litres per minute to 6 stars and 4.5 litres per minute, depending on the chosen dispenser option – can help industry professionals meet relevant criteria for water efficiency.

SUPPORTING OCCUPANT WELLNESS
Beyond direct credit contributions, the Quadra and Quadra Plus support the goals of a healthy indoor environment. Their ergonomic design enhances usability, while the silent, water-cooled operation contributes positively to acoustic comfort. And by not requiring cabinet ventilation, they also prevent unwanted heat from impacting thermal comfort in occupied spaces.

EPD AND THE UPFRONT CARBON REDUCTION

Plus, Quadra and Quadra Plus’ product-specific EPDs equip architects, designers and specifiers with a crucial metric they require to meet the upfront carbon reduction criteria – the Upfront Reduced Carbon unit, which is 167kgC02e/Unit for Modules A1-A3 (cradle to gate).
To achieve the credit under Minimum Expectations, the upfront carbon emissions will have to be at least 10% less than those of a reference fitout, for Credit Achievement – 20%, and for Exceptional Performance, the fitout’s upfront carbon emissions will have to be at least 40% less than those of a reference fitout.
Any project seeking a rating under the Green Star Buildings framework will have to reduce its upfront carbon by a minimum of 10% for Minimum Expectation, while any project seeking higher ratings will require a reduction of 30% to achieve the Credit Achievement. Billi’s product-specific EPD provides the exact third-party verified data required to make this calculation.
“It’s essential for industry professionals to collaborate with suppliers to identify opportunities to reduce the project’s carbon footprint throughout the entire supply chain,” says Fergus Tough, Billi’s Director of Manufacturing Operations.

THE COLLECTIVE NEED FOR A SUSTAINABILITY STEP-UP

There is no doubt that architects, designers and specifiers can leverage the potential of sustainable products with robust sustainability metrics – like Quadra and Quadra Plus – to unlock an effective pathway to relevant ratings and a greener built environment overall. And with the new Green Star Fitouts rating tool being rolled out, the navigational toolbox industry professionals have at their disposal is getting increasingly more nuanced and demanding.
“Based on the Green Star Building system rollout in 2022, and the Green Star Fitouts in 2025, with planned stricter requirements in the coming years, we see that the supplier side of the equation will be called to accountability as well,” says Fergus. “This system calls for prior consideration of the end-user’s well-being and better monitoring from cradle to grave of our product lifecycle. This changes the perspective to a much more holistic one and will drive faster improvement in fitout design for the industry.”
Based on the fact that the Quadra system’s cradle-to-grave number is 175.98 kg CO2 Eq (Carbon Dioxide Equivalent) – about 35% lower than the industry average for worst case product (271.7 kg CO2 Eq) – Billi is certainly well equipped to lead the way.

STRENGTHENING “AHEAD OF THE MARKET” COMPLIANCE

Sitting in the top 35% of Global GreenTag internal rankings with “ahead of the market” compliance, both Quadra and Quadra Plus set an example for highly considered product development. But how is Billi planning to strengthen its leadership position in metric-driven sustainable hydration solutions and in Green Star Fitout compliance?
“We have recently launched with BIMSTORE to keep our digital drawing and 3D files accessible and up to date, and we provide ongoing information to third-party industry websites like Architecture & Design to improve product navigation and search,” says Christy Minutoli, Billi’s Marketing Manager ANZ. “We’re also about to release Billi’s first sustainability report and are ramping up our ongoing collaboration with Global GreenTag and the broader architecture and design industry, with a few exciting initiatives currently underway.”
Billi is also transitioning older units to R290 gas. “That means we’ll be adding a few more options to our sustainable products range – and expanding options for Green Star applicants in buildings or specification design.”
Ultimately, the journey towards achieving Green Star certifications and fostering a more sustainable built environment is intrinsically linked to robust sustainability metrics. And as Green Star tools continue to evolve and demand more from manufacturers, products like Quadra and Quadra Plus – with their independently verified metrics, impressive RPV and the company’s plans to expand their sustainable product range – serve as prime examples of how manufacturers can empower architects, designers, and specifiers to make sustainable product choices and confidently navigate the path to achieving their Green Star aspirations.

SUSTA I N A B I L I T Y  AWA R D S  2 0 2 5 

S U S TA I N A B I L I T Y  eBOOK  2025

BRANKO MILETIC, EDITOR

Architecture & Design 

 

Launched in 2006, Billi’s Quadra system revolutionised underbench drinking water systems with energy reclaim technology and user-first design. Nearly two decades on, Quadra continues to set the benchmark for efficiency, sustainability and design innovation in residential and commercial water systems.in residential and commercial water systems.

 

 

When Billi launched in 1989, the small, Aussie-grown company was bursting into an establishing water filtration market with some pretty groundbreaking ideas on how to galvanise the industry. And they accomplished this ambitious vision by introducing Australia to the first underbench boiling and chilled drinking water system only a few years later. This pioneering launch laid the groundwork for Billi’s future prominence in the market, setting in motion years of innovation and exciting technological and product releases.

One of them was the landmark launch of Billi’s signature Quadra underbench water system in 2006. Pioneering a unique heat energy reclaim system that significantly enhances energy efficiency, at the time of launch, the Quadra range solidified Billi’s reputation as an innovative, environmentally-driven disruptor in the water systems space. And now, almost 20 years on, we take a closer look at the Quadra range to uncover the innovation behind this revolutionary system, understand how it’s maintained its unwavering relevance over the years, and explore the design philosophy that brought it to life in the first place.

THE END USER
“The end user has always been at the heart of our design philosophy,” says David Craggs, Billi’s Head of Research & Development.
“From the meticulous design of our hot water safety labels and the addition of a digital user interface to expanding user controls for temperature settings, perfecting the spout splash dynamics and dispenser design – we’re constantly improving our product design to enhance user experience.”

It’s evident that the very same, user-driven ethos informed Quadra’s mid-2000s launch. While there was quite a lot of innovation happening in the water system space at the time, Quadra introduced some particularly inventive features that directly addressed shifting consumer needs and evolving requirements of the built environment.
In essence, Quadra’s innovative heat energy reclaim system captures and reuses the energy produced during the chilling cycle to preheat the boiling water, leading to significant energy savings and improved efficiency. In addition, Quadra introduced water-cooled technology, which is generally considered more energy-efficient and does not require cupboard ventilation or a cooling fan, making installation easier, preventing the release of exhaust heat into surrounding cabinetry and ensuring much quieter operation.

This noise-reduced, efficient and space-saving underbench design made it easier to integrate into various residential and commercial environments, offering architects and designers at the time a unique opportunity to specify water systems in applications that weren’t an option before.
With such an outstanding fusion of performance, convenience, improved efficiency and energy savings, no wonder that the ripples of Quadra’s momentous launch still influence the water systems landscape to this day.

QUADRA’S ENDURING RELEVANCE

Since the launch, the range has expanded its product family, and now comprises Quadra, Quadra Plus and Quadra Twin Plus. The Quadra provides instant boiling and chilled filtered water, while the Quadra Plus adds a separate sink mixer tap with its own hot and cold-water supply. The Quadra Twin Plus provides boiling and chilled water and features two separate sink mixer taps with hot and cold water.
Designed to work in commercial and residential spaces, the systems boast a selection of refined dispenser options, including XT Touch, XR Remote, XL Levered and the award-winning Multifunction Mixer Tap, launched in 2024 and recognised with a Good Design Award, complemented by a range of versatile contemporary finishes from classic matte white to urban brass and gunmetal grey. In addition, the XL Levered option is available with red and blue coloured levers and braille pads to support vision-impaired users.

This design versatility is also reflected in the varying capacity of each system, showcasing Billi’s commitment to meeting customer needs and ensuring the best possible experience. Specifiers can select an appropriate system depending on the number of users it’s meant to cater to, hourly delivery of boiling or chilled water cups, and a total current draw needed to accommodate the desired operation. Even the temperature of the chilled water can be adjusted between 6°C and 15°C to accommodate individual user preferences. Billi also offers custom service plan options to ensure continuous safe drinking water onsite – with periodic plans available for locations with multiple units, the company provides a bespoke management system for every customer’s needs.

Alongside versatile choice, outstanding quality and excellent functionality – backed by a two-year warranty – Quadra’s environmental profile continues to be the cornerstone of its unwavering relevance. And essential to its sustainability performance is the natural gas refrigerant (R290) – with a negligible global warming potential (GWP), it plays a critical role in the system’s efficiency.
“R290 exhibits exceptional thermodynamic characteristics, enhancing heat transfer efficiency and expediting cooling processes,” explains Fergus Tough, Billi’s Director of Manufacturing Operations. “As a result, R290-powered systems generally demand less energy for temperature control, reducing both energy usage and utility expenses.”
From a health, safety and well-being perspective, the products contain no VOCs or BPAs and Quadra filters are manufactured with bacteria- and biofilm-resistant materials for improved water safety and quality. Plus, both the “red for no, green for go” smart locking technology with visual safety and fault indicators and the clever Splash Free™ technology underscore the systems’ user-centric character.

A WATER-TIGHT SHIP: RELIABILITY, CERTIFIED

It’s very clear that this holistic design continues to be as relevant as when Quadra first launched, and an array of essential sustainability certifications underscores this enduring character.
Billi is a cornerstone member of the International WELL Building Institute (IWBI), and both Quadra and Quadra Plus are Watermark-certified, have Environmental Product Declarations (EPDs) and are certified Gold Level under Global GreenTag standards. This certification not only reflects their commitment to sustainability across the full lifecycle of the product – including energy and water efficiency, reduced environmental impact, low-VOC emissions, healthy indoor environments, ethical manufacturing practices, and responsible sourcing of materials – but also recognises the maximum score the products achieve for Health & Toxicity, further highlighting their potential to support relevant outcomes within existing frameworks.
For architects and designers striving for sustainable building certifications like Green Star, specifying products with recognised ecolabels provides valuable documentation and contributes towards achieving their project goals. For instance, specifying Quadra and Quadra Plus can contribute to achieving the Responsible Products credits in Green Star. In the Green Star Buildings rating tool, the RPV of 16 allows them to contribute to achieving credits in the Responsible Systems category, placing them in the Exceptional Performance tier with a required minimum RPV of 11 at the product level.

This potential to help architects and designers achieve their sustainability aspirations is underscored by Global GreenTag’s assessment of Quadra ranges’ compliance as “ahead of the market,” positioning them in the top 35% of Global GreenTag’s internal ranking.

STAYING AHEAD OF THE MARKET, LOCALLY AND GLOBALLY

With the “ahead of the market” Global GreenTag compliance under Quadra and Quadra Plus’ belt, Billi, which has just started its global expansion, is looking at a much more complex market of international regulations to adhere to.

“It adds another layer of complexity when we look at sustainability as a manufacturer,” says Royce Tan, the company’s Brand Marketing Coordinator. “It highlights the ‘duty of care’ and our own global impact as an international conglomerate.” With such a strong commitment to industry-wide collaboration, a data-driven approach to innovation and a constant push to advance sustainability ambitions locally and abroad, what’s next for Billi and for the Quadra systems?
“The latest units are based on the consistent success of an all-in-one underbench water filtration solution, like our flagship model, the Quadra,” David says, explaining that the last iteration of the Quadra range, Quadra Sparkling, has now evolved into the OmniOne. “We’ve improved the touchscreen interface in OmniOne, introducing better customisation controls and even safety mitigations in the unit,” he continues. “Now, the new XT Motion will combine the convenience of buttons with motion-sensor controls for all functions on the sides, back and top to enable more convenient, inclusive and hands-free operation, supporting disability access and helping ensure infection control.”

As Billi’s intuitive refinements continue to improve the user experience over the coming years, another challenge lies ahead, and the company is facing it with readiness, curiosity and optimism. “We are approaching the energy efficiency limit of unit design,” explains David. “That’s because it’s impossible to increase the capacity without increasing energy use
or altering the size of the system. So, for us, this will be the most exciting challenge, once we’ve exhausted the limits of conventional appliance design
Based on the Quadra system’s trajectory to date, it’s safe to assume that Billi is most certainly going to rise to the challenge, and we can expect continued market-defying innovations.

 

Sustainability E-Book 2025 

BRANKO MILETIC, EDITOR 

Architecture & Design Australia 

 

[dearpdf id=”256736″ ][/dearpdf]

 

 

 

At Billi, we have always been proud to be at the heart of the Australian home, providing premium filtered water solutions that combine luxury with innovation. Today, we are proud to share a significant milestone in our journey toward a more sustainable future: our transition to 100% compliant, eco-friendly packaging.

 

Embracing Change for a Cleaner Australia As a homeowner, you understand the importance of preserving the beautiful Australian environment for the generations to come. Billi Australia is fully committed to this mission, ensuring we are not only compliant with state mandates but leading the industry in sustainable practices.

As announced on 1 July 2025, Western Australia officially banned the use of expanded plastic moulded packaging under the Environmental Protection (Prohibited Plastics and Balloons) Regulations 2018. This ban specifically targets:

 

 

A Message from Our Supply Chain Team

We have been working diligently to stay ahead of these regulations. Our Supply Chain Manager Karol Recki recently shared an update on the tangible changes we’ve implemented:

“We changed our polystyrene (EPS) spacers to honeycomb—a biodegradable material made from recycled paper—late last year. While we may still have a small quantity of units at Billi HQ produced prior to the break point, every step we take is designed to eliminate waste. Furthermore, Billi does not use EPE nor EPP for packaging.”

 

Innovation Beyond the Box Our commitment doesn’t stop at the spacers. We are constantly investing in new ways to reduce our footprint. Our team has already commenced investigating the option to move towards plant fibre pallet strapping, ensuring that even the smallest components of our delivery process align with our “Green” philosophy.

 

What This Means for You When you choose a Billi system, you are investing in a brand that values the planet as much as you do.

 

 

We invite you to join us in celebrating this step forward. By choosing Billi, you aren’t just choosing world-class design—you’re choosing a cleaner, greener Australia.

 

 

About Billi Australia

For over 35 years, Billi has been designing and manufacturing premium instant boiling, chilled and sparkling filtered water systems in Australia. Renowned for quality, innovation, and timeless design, Billi products are specified by leading architects and designers and trusted by homeowners who demand the very best.

 

Media Contact:


Christy Minutoli

Marketing Manager ANZ

christy.minutoli@billi.com.au

 

Royce Tan

Marketing Coordinator – Brand & Content

royce.tan@billi.com.au

When you are renovating a kitchen, upgrading an apartment, or planning an office fit-out, every inclusion must justify its footprint. Cabinetry is measured to the millimetre, power points are mapped, and joinery is finalised often before appliances are specified.

That is why many designers, homeowners and facilities managers are turning to a compact underbench water systems that deliver filtered boiling and chilled water, and in selected models sparkling and ambient, from a single integrated tap.

Choosing the right system involves more than selecting a finish. Installation considerations, capacity requirements, energy performance and long-term servicing all influence whether a solution is suitable for your space. As an Australian manufacturer with more than 30 years of experience designing and producing underbench boiling and chilled systems in Melbourne, Billi approaches hydration as built-in infrastructure rather than an afterthought. Learn how to assess your options properly and specify with confidence.

 

Why Underbench Systems Are Replacing Traditional Taps

An integrated boiling and chilled tap consolidates the functions of kettles, bottled water, carbonation appliances, and more, into one streamlined solution. The unit sits beneath the bench, freeing surface area while delivering filtered water on demand.

Billi systems are engineered with a compact underbench footprint and incorporate technologies such as heat exchange and energy reclaim, where waste heat from the chilling process assists boiling. Eco and Sahara systems also feature Eco-Intelligence, a self-learning timer that adapts to usage patterns to reduce unnecessary energy consumption.

For renovation projects focused on clarity and performance, and for offices requiring reliable hydration without clutter, underbench systems provide structural efficiency rather than cosmetic change.

 

Confirm Space and Installation Requirements Early

Before comparing models, confirm feasibility. A well-specified retrofit filtered water tap should integrate with existing cabinetry rather than require it to be rebuilt.

However, many of our water-cooled systems do not require cupboard ventilation cut-outs or grilles, which simplifies installation and preserves joinery aesthetics. This is particularly relevant in apartment renovations and commercial retrofits where alterations can be disruptive and costly.

Typical installation considerations include:

 

Planning for these requirements from the outset avoids late-stage compromises. If you are uncertain about suitability for your space, contact our team to confirm installation requirements before finalising specification.

 

Align Capacity With Real-World Usage

Once installation is viable, performance becomes the defining factor. Capacity must reflect genuine demand.

In a residential setting, usage peaks tend to occur during mornings and evenings. Systems within the Billi Home range are designed for domestic environments, incorporating energy-saving modes and select models include boiling safety features suited to family use.

Commercial environments require a more deliberate calculation. A 50-person office can generate concentrated demand during breaks and meetings. The OmniOne, for example, is capable of delivering up to 180 cups of boiling water and 220 cups of chilled or sparkling water per hour, based on one cup drawn every ten seconds, and is suggested for up to 60 people.

Undersizing can lead to recovery delays and strain. Oversizing may increase costs without measurable benefit. Matching the system to the scale of your site ensures consistent delivery and long-term reliability.

For larger workplaces, review our commercial range to compare models against staffing levels and expected usage patterns.

 

 

Integrate Design and Function Seamlessly

Once performance criteria are met, attention turns to interface and aesthetics. A compact system should complement the architectural language of the space.

Billi offers a selection of dispenser styles including XL, XT and XR options, allowing flexibility in form and activation style. For projects seeking a single-fixture solution, the Multifunction Mixer Tap integrates filtered boiling, sparkling and chilled water alongside mains-fed hot and cold water within one streamlined tap body. The ergonomic touch interface is positioned to reduce the risk of accidental activation, and the tap complies with Australian standards including Watermark certification and a 5-Star WELS rating.

View the full range of dispensers and mixer options to select a configuration that aligns with your design intent.

 

Consider Energy Performance and Sustainability Credentials

Sustainable specification now forms part of both residential and commercial decision-making.

Our water-cooled systems utilise heat exchange technology to improve energy performance, and Quadra units have been certified and re-certified by Global GreenTag at Gold Level. An Environmental Product Declaration under EN 15804 further supports transparency in life cycle analysis. We also participate in the International WELL Building Institute’s Works with WELL program, aligning with broader health and wellbeing considerations in building design.

For sparkling systems, the Refillable CO? Plan (within BilliCare) offers a lower-waste alternative to disposable cylinders, with scheduled refilling provided to site.

 

Plan for Servicing From the Outset

A compact filtered water system should be viewed as a long-term asset. Therefore maintenance is important, and should be structured and predictable.

Filters must be replaced at least every 12 months, and commercial sites may require more frequent changes depending on usage and water conditions. Even where usage is light, filters can accumulate organic matter over time, which is why scheduled replacement is recommended.

BilliCare Service Plans provide ongoing support. The Gold Plan includes comprehensive maintenance with filter replacements performed by accredited technicians. The Silver Plan focuses on scheduled filter changes at a fixed rate. For sparkling systems, the Refillable CO? Plan ensures cylinders are replaced and refilled on a planned schedule.

This structured approach reduces downtime, ensures genuine parts are used and provides access to an Australia-wide network of trained service technicians.

 

Choosing With Confidence

Selecting a compact underbench water system is about determining how your kitchen or workplace will function every day.

By evaluating space constraints, confirming installation feasibility, aligning capacity with genuine demand, considering energy performance and planning for servicing, you move from preference to informed specification. The result is a system that integrates neatly beneath the bench, delivers filtered boiling and chilled water reliably and supports long-term performance through structured maintenance.

The right system supports the rhythm of daily use, consistently and quietly. View our full range to compare models or contact our experts to discuss your project.

 

Office kitchens influence productivity, wellbeing, sustainability, and the overall impression of your workplace. When kettles create ques, bottled water contracts feel excessive, or ageing chillers become unreliable, the conversation shifts from convenience to infrastructure.

A well-specified underbench filtered water system can consolidate boiling, chilled, sparkling and filtered ambient water into one streamlined solution. But not every system delivers the same operational performance, acoustic suitability or lifecycle value.

With over 30 years designing and manufacturing instant filtered boiling and chilled systems in Melbourne, Billi understands what separates a short-term upgrade from a long-term workplace asset. Learn about the practical criteria that determine whether a multi-function dispenser is worth the investment, from capacity and quiet operation, to sustainability credentials and total cost of ownership.

 

Modern workplaces demand more than a kettle

Most offices begin with a simple arrangement of a kettle and a refrigerator. Perhaps bottled water is delivered weekly. It works in the short term, until it creates friction.

Kettles introduce wait times during peak periods. Bottled water generates recurring cost and waste. Multiple standalone appliances consume space, energy and maintenance attention. None of them are integrated into the broader design of the workplace.

Hydration has become part of the amenity conversation. Staff often expect instant access to boiling and chilled water. Sustainability targets encourage a reduction in single-use plastics. Fit-out decisions increasingly prioritise efficiency and long-term performance.

Billi systems were developed around this shift. Designed and manufactured in Australia, they deliver instant filtered boiling, chilled, sparkling and still water from a compact underbench unit. The result is consolidation, with fewer appliances, less clutter, and greater control.

 

What actually makes a system worth the investment

A multi-function dispenser should not be evaluated as a decorative upgrade. It should be assessed as workplace infrastructure.

Before comparing models, define the criteria that matter to your organisation:

 

Framing the decision this way shifts the focus from initial outlay to lifecycle value.

 

Integration and underbench efficiency

Integration reduces operational complexity. Instead of separate kettles, chillers and carbonators, an integrated system delivers multiple water types from one underbench unit.

Billi systems are engineered with a space-saving underbench footprint, allowing you to reclaim benchtop area and simplify kitchen layouts. In high-traffic office environments, that space matters.

Safety and usability are built in. Boiling dispensers include a safety switch to lock off access where required. Electronically controlled boiling flow briefly moderates delivery as water enters the cup to minimise splashing. These practical design elements reduce daily friction in shared environments.

If you are comparing configurations, you can explore suitable options within our commercial range to align specification with staff numbers and usage patterns.

 

 

 

Matching performance to workplace demand

Performance should be assessed realistically. A system that performs well in a small office may not suit a high-demand breakout zone.

Sparkling capability, where required, should also be considered carefully. An instant sparkling water dispenser can integrate carbonation within the same underbench unit. Adjustable sparkling levels, with control up to 5 bar of CO? pressure, allow workplaces to tailor output to preference. Ice bank technology supports consistent chilled and sparkling delivery.

For organisations aiming to reduce bottled sparkling purchases, the Silver Sparkling Plan (within BilliCare) offers an environmentally conscious alternative. Cylinders are exchanged and refilled, with capacity of more than twice that of some disposable options.

Not every workplace requires sparkling. But where client experience, staff amenity or sustainability goals are priorities, integrated sparkling can reduce reliance on packaged beverages while maintaining convenience.

To review available configurations, you can compare sparkling water systems such as the Eco Sparkling & Quadra Sparkling (boiling, chilled and sparkling), or Alpine Sparkling (chilled & sparkling), or OmniOne (boiling, sparkling, chilled, and still), to determine whether the function aligns with your operational needs.

Quiet operation and seamless installation

Noise is often overlooked until after installation. In open-plan offices, even modest mechanical sound can become disruptive.

Billi offers both water-cooled and air-cooled systems. Water-cooled models use heat exchange technology and do not require a cooling fan or cupboard ventilation. This reduces ambient noise and removes the need for cabinet cut-outs or grilles in many installations.

Air-cooled systems remain appropriate in certain settings, but where acoustic comfort and clean joinery are priorities, water-cooled solutions offer practical advantages.

Correct specification is essential. Contact our experts to ensure the selected system aligns with your space, usage patterns and installation constraints.

 

Cost measured over time

The most significant difference between entry-level and investment-grade systems emerges over years, not months. This is where total cost of ownership becomes decisive.

Energy efficiency is central. Our heat exchange technology recovers waste heat from the chilling process to preheat boiling water, improving efficiency and supporting energy savings. Standby mode powers the unit down after two hours of non-use to reduce unnecessary consumption. Eco and Sahara models incorporate Eco-Intelligence technology, a self-learning timer that monitors usage patterns and adjusts operation to minimise energy consumption.

Maintenance must also be predictable. Filters are consumable items and must be replaced regularly, with commercial sites typically changing filters at least every six months depending on usage and water quality. Structured service plans simplify asset management. The BilliCare Gold Plan includes comprehensive maintenance and filter replacements performed by accredited technicians at a fixed fee. The Silver Plan provides scheduled filter replacement at a consistent rate.

With correct specification and regular servicing, there is no reason a Billi unit will not operate for many years. Longevity shifts the financial equation significantly.

 

Sustainability credentials that support modern fit-outs

Billi Quadra units have been repeatedly certified by Global GreenTag at Gold Level under the LCARate Program and hold an Environmental Product Declaration under EPD EN 15804. We also maintain membership with the International WELL Building Institute and participate in initiatives aligned with WELL standards.

For architects and facilities managers working toward Green Star, WELL or ESG objectives, documented credentials provide assurance. Reducing bottled water reliance, selecting energy-efficient systems and specifying Australian-designed and manufactured products all support more responsible fit-out decisions.

 

Common concerns and practical answers

Budget is often the first hesitation. A multi-function system represents a capital investment. However, when evaluated over its operating lifespan, including energy performance, servicing structure and reduced appliance duplication, the value proposition becomes clearer.

Some workplaces question whether sparkling is necessary. In smaller environments it may not be. In larger offices or client-facing spaces, it can reduce bottled purchases and elevate amenity without adding complexity.

Maintenance is another concern. BilliCare plans exist to reduce downtime and simplify servicing, with accredited technicians performing scheduled maintenance. Warranty conditions are clearly defined for commercial installations, and consumables such as filters are treated as standard replacement items.

Noise and installation disruption can be managed through correct model selection, particularly where water-cooled systems eliminate the need for ventilation cut-outs.

The most important decision is not whether to upgrade, but how to specify correctly.

 

Choosing with confidence

When you assess integration, performance, acoustic suitability, sustainability credentials and total cost of ownership together, the decision becomes more strategic. A well-specified system reduces clutter, improves efficiency, supports environmental objectives and provides predictable servicing over the long term.

If you are reviewing your options, explore our commercial range to compare models suited to your environment. For tailored specification advice, contact our experts. And to ensure continued performance from an existing unit, book a service through BilliCare.

When hydration is integrated into your workplace infrastructure, the investment supports efficiency, sustainability and long-term operational confidence.