Clean and safe drinking water is essential for every Australian household. With so many filtration systems available, selecting the right one can be daunting. Whether you’re considering an under-sink or whole-house water filter, your choice should depend on your unique needs and preferences.
This guide will walk you through the essentials of these filtration systems, highlighting how a whole-house water filter can safeguard your entire water supply. Choosing the right whole-house or under-sink filtration system means your family enjoys clean and safe drinking water daily without worry.
The Importance of Water Filtration
In Australia, concerns about water quality are increasingly common. Are you confident your tap water is clean enough for you and your family? Clean water is fundamental for drinking, cooking, and maintaining health, but contaminants like heavy metals, chlorine gas, and sediment can impact water taste and safety. A reliable water filtration system can make a huge difference, providing filtered water that ensures safe drinking water for your household.
When treating your water, you have two main options: under-sink filters and whole-house filtration systems. Understanding the distinctions between these will help you choosethe right system for your needs. Below, we’ll break down these choices to help you find the best fit for your home.
Under Sink Water Filters: Compact and Targeted Solutions

Definition and Function
Under-sink systems are typically installed directly under your kitchen sink and treat water at the point of use. An under-sink water filter connects to the cold water supply line, providing filtered water for a single tap, often the kitchen faucet.
These systems effectively remove contaminants like chlorine, heavy metals, and other specific contaminants, ensuring safe drinking water.
Benefits
The main advantage of under-sink filters is their targeted approach. Under-sink systems are cost-effective and provide great-tasting water without filtering the entire house’s supply. Since they filter only the tap water you drink or cook with, they are instrumental if you want to ensure clean water without the higher upfront cost of whole-house water filtration systems.
Additionally, under-sink filters take up little space and can often be installed easily without major renovations.
Ideal Situations
Under-sink water filters are ideal for small households, renters, or anyone who wants a filtration system without a significant investment. They provide an excellent balance of convenience and efficiency for those primarily concerned with drinking and cooking water.
With an under-sink system, you can have filtered water directly from your kitchen tap, making it perfect for homes where bottled water use is everyday and minimising costs and waste.
Whole House Water Filters: Comprehensive Filtration for Your Home

Definition and Function
Whole-house water filters handle your entire water supply when it enters your home. This means every tap provides filtered water, from your kitchen faucet to your bathroom shower. Whole-house systems connect to the main water supply, so your water is treated whether it’s the kitchen sink or the hot water system. These setups can feature everything from sediment filters to reverse osmosis membranes, eliminating a broad spectrum of contaminants in your local supply.
Benefits
The primary advantage of whole-house water filters is comprehensive filtration. A whole-house filtration system treats water for the entire home, removing contaminants that could affect hot and cold water quality. This means all the water flowing through your taps, showerheads, and even into your appliances is pure water.
Whole-house filters are highly convenient because they simultaneously address all pointsof use, ensuring that even bath water is filtered and safe. Additionally, by reducing mineral build-up, whole-house water filtration systems can extend the life of your appliances and prevent issues like clogged pipes.
Ideal Situations
Whole-house water filtration is ideal for larger homes or families who want safe water throughout the home. These filtration systems are beneficial in areas with poor water quality or where the local water supply is known to have specific contaminants. Whole-house water filters provide safe drinking, cooking, and shower water, all from one comprehensive system, making them an excellent option for long-term household needs.
Key Differences Between Under-Sink and Whole-House Filters
Installation and Maintenance
Under-sink water filters are generally easier and less expensive to set up than their whole-house counterparts. They’re often simple to install—sometimes even a DIY project. In contrast, whole-house systems typically require a professional touch.
Maintenance for under-sink systems is also straightforward, typically involving only the replacement of sink filters. In contrast, maintaining a whole-house filter can be more complex, involving multiple filtration components.
Cost Considerations
Under-sink systems are budget-friendly, not just upfront but also in their ongoing costs. Conversely, a whole-house filter is a bigger investment, with its equipment and installation costing more initially. However, these systems can save money in the long run by preventing mineral build-up and prolonging the life of appliances like water heaters and washing machines.
Filtration Capabilities
Under-sink filters are designed to treat water at a single point of use, focusing on removing contaminants from drinking water. These systems are perfect for targeting specific contaminants but have limited capacity for whole-home needs.
On the other hand, whole-house filters provide filtration at every tap and appliance in the house, removing contaminants such as chlorine gas, sediment, and even heavy metals from the entire water supply. Whole-house water filtration offers a much broader contaminant removalscope than under-sink systems.
Space and Aesthetics
An under-sink filtration system takes up minimal space and is hidden beneath the kitchen sink. This can be ideal for households looking for a discreet solution. A whole-house filtration system, however, requires more space and is typically installed near the main water supply line, which might be in the basement or garage. The space requirement for whole-house water filters is more considerable, but the aesthetic impact is minimal since it is installed away from the main living areas.
Making the Right Choice

Water Quality Needs
When choosing between under-sink and whole-house filters, evaluate your water quality needs. If the issues in your local water supply mainly affect drinking water, an under-sink filter might be your best bet. But a whole-house system is probably the way to go if your water shows problems like mineral build-up, discolouration, or sour taste all over the house.
Budget Analysis
For households on a tight budget, under-sink filters offer a practical, affordable way to ensure safe drinking water. Their upfront cost is significantly lower than that of a whole-home filtration system. However, if your long-term goal is to treat all the water flowing into your home, a whole-house filter’s benefits will justify the cost.
Household Size and Usage
Family size and water usage are important factors. Small households or individuals primarily concerned with drinking and cooking water may find under-sink systems adequate. Larger families that consume more water—including for bathing, laundry, and dishwashing—will benefit from the comprehensive filtration offered by whole-house systems.
Long-term Goals
Consider your future needs. If you plan on staying in your current home for many years, investing in a whole-house filtration system can improve overall water quality. Conversely, under-sink water filters provide an easy, portable solution for clean drinking water for those renting or moving soon.
Choose the Best for Your Home
Selecting the right water filtration system for your needs depends on various factors, including water quality, budget, household size, and long-term considerations. Whether you choose an under-sink filter for targeted use or a whole-house filtration system for comprehensive contaminant removal, ensuring clean and safe water is a worthwhile investment.
For tailored advice and professional installation, contact Fixed Today. Our experts are ready to assist with all your water filtration needs across Sydney.



