More and more Sydney households are installing water filtration systems to reduce exposure to forever chemicals, microplastics, and other contaminants that can make their way into our drinking water. It’s becoming less about convenience and more about protecting your family’s health. But you might be wondering, how much does a water filtration system actually cost?
Let’s break it down.
What’s the Average Cost of a Water Filtration System?
There’s no one-size-fits-all answer here. The cost can range from a few hundred dollars for a simple under-sink filtration system to a few thousand for a whole house filtration system. It all comes down to the type of system you choose, your water source (mains vs rainwater), and how complex the installation is.
Types of Water Filtration Systems (and How They Affect Price)
Here’s a quick rundown of your main options:
1. Under-sink filters (from $589 supplied and installed)
Ideal for filtering drinking and cooking water from a single tap—usually in the kitchen. These compact systems are affordable, easy to maintain, and don’t take up much space. Perfect if you’re only concerned about the water you consume directly.
2. Reverse osmosis (RO) systems (from $1,255 supplied and installed)
RO systems provide advanced multi-stage filtration, removing up to 99% of contaminants—including heavy metals, nitrates, and PFAS. Many models include a re-mineralisation stage to add back healthy minerals, making the water not only clean but nourishing. These are a great choice for households seeking peace of mind around water purity.
3. Whole-house filtration systems (from $3,650)
Whole-home systems filter every drop of water that enters your house—from the kitchen and bathroom to the laundry and outdoor taps.
They’re not just about drinking water. They protect your skin during showers, reduce exposure to chemicals like chlorine and PFAS via inhalation and absorption, and even help prevent damage to clothes and plumbing caused by hard water and sediment.
For health-conscious households or those with skin sensitivities, this is the most comprehensive and future-proof option available.
Why Whole Home Filtration Is the Most Comprehensive Option
Whole home water filtration offers the most comprehensive protection for your household. It doesn’t just filter the water you drink—it treats every drop that flows through your home, including the water you shower in, wash your hands with, and use for laundry. This means you’re not only reducing your exposure to contaminants through drinking, but also through skin absorption and inhalation, which is especially important when it comes to chlorine and other chemicals found in tap water.
For families who are health-conscious or sensitive to water quality, it’s a smart long-term investment that supports overall wellbeing every time you turn on a tap.
What Affects the Final Price?
Several things can push the price up or down, including:
- Type of water: Rainwater requires more advanced filtration (like UV sterilisation).
- Water quality: More contaminants = more filtration stages needed.
- System size: Bigger households need systems with higher capacity.
- Plumbing configuration: The more complex the job, the more it costs.
- Ongoing maintenance: Filter cartridges and UV lamps need replacing regularly.
Choosing the Right System for Your Home
Not sure which option is best for you? Start by asking:
- Are you on mains water or rainwater?
- Do you want to filter all the water in your house or just what you drink?
- What’s your water quality like?
- What’s your budget for installation and ongoing maintenance?
At Swish Plumbing, we can help you work through these questions and recommend the best setup for your home.
Finding a Plumber to Install Your Water Filtration System
Getting the right plumber matters. Installing a filtration system isn’t just about connecting a few pipes—it needs to be done properly to comply with regulations and make sure your system works efficiently.
Here’s what to look for in a plumber:
- Fully licensed and insured
- Experience with your specific type of filtration system
- Upfront pricing (ideally fixed quotes)
- Good reviews or recommendations
- Willing to explain what’s included in the job
At Swish Plumbing, we’ve installed water filtration systems all over Sydney—from compact under-sink units to complex whole-house systems with UV filters and everything in between.
Let’s Talk About Your Water Needs
A good water filtration system is an investment in your home and your health. While costs vary, you can expect to spend anywhere from a few hundred dollars for a basic under-sink system, up to a few thousand for a whole-house setup with all the extras.
Need help figuring out what’s right for you? Call Swish Plumbing at 1300 926 917 or book online today. We’ll walk you through your options and provide a no-pressure quote that makes sense for your home.
