If you’ve ever filled a glass from the tap and noticed an odd taste or smell, you’re not imagining it. Newcastle and Hunter Region tap water meets the Australian drinking water guidelines, but that doesn’t mean every household will be happy with what comes out of the tap. Chlorine, sediment, heavy metals, and other substances can affect the taste, smell, and quality of your water depending on where you live and the age of your pipes.
A home water filtration system can make a real difference. The challenge is knowing which type is right for your household, your budget, and your water quality concerns. This guide walks you through the most common options so you can make an informed decision.
Why Filter Your Home’s Water?
Australian tap water is treated and generally safe to drink. But treatment doesn’t remove everything, and some substances are added during the treatment process itself. Common concerns for Australian households include:
- Chlorine and chloramines, added during treatment to kill bacteria, which can affect taste and smell
- Sediment and particles, particularly in older homes with ageing pipes
- Heavy metals such as lead or copper, which can leach from older plumbing systems
- Fluoride, which some households choose to reduce even though it’s added intentionally
- Hard water minerals such as calcium and magnesium, which affect appliances and leave scale deposits
A filtration system doesn’t just improve drinking water. Depending on the type you install, it can also protect appliances like your hot water system, dishwasher, and washing machine from scale buildup over time.
The Main Types of Water Filtration Systems
1. Jug and Countertop Filters
The most basic option. These use activated carbon to remove chlorine and improve taste. They sit on the bench, need no installation, and are inexpensive to buy. The downsides are that they filter small volumes at a time, the cartridges need regular replacement, and they don’t remove heavy metals or dissolved solids.
Best for: renters or households who want a simple, low-cost improvement to drinking water taste.
Tip: If your main concern is chlorine taste or smell, a basic carbon jug filter can make a noticeable improvement without any installation costs.
2. Under-Sink Filters
Installed under the kitchen sink and connected directly to the water supply, these systems filter water at the point of use before it reaches the tap. They’re more effective than jug filters and can handle a wider range of contaminants depending on the cartridge type.
Under-sink filters typically use one or more stages of filtration, including activated carbon, ceramic, or KDF media. They need professional installation and periodic cartridge replacement, usually every six to twelve months.
Best for: households that want filtered water at the kitchen tap without committing to a whole-house system.
3. Reverse Osmosis (RO) Systems
Reverse osmosis is one of the most thorough filtration methods available for residential use. Water is pushed through a semi-permeable membrane that removes up to 99 per cent of dissolved solids, heavy metals, fluoride, bacteria, and other contaminants. Most RO systems include multiple pre-filter and post-filter stages.
The trade-offs are that RO systems waste some water during the filtration process, produce water slowly (which is why they include a storage tank), and remove minerals that some people prefer to keep in their drinking water.
Best for: households with specific water quality concerns, older pipes, or anyone who wants the highest level of filtration for drinking and cooking water.
Tip: If you have young children or someone in the household with a compromised immune system, a reverse osmosis system offers the most thorough filtration available for home use.
4. Whole-House Filtration Systems
Rather than filtering water at a single point, a whole-house system is installed at the main water supply line and filters all water entering the home. This protects not just drinking water but also shower water, laundry water, and the water running through your appliances.
Whole-house systems typically use sediment pre-filters combined with activated carbon or other media. They’re a larger investment upfront but protect your plumbing and appliances from scale, sediment, and chlorine damage over the long term.
Best for: households in areas with sediment or hardness issues, or anyone who wants whole-home protection including appliances and shower water.
5. Water Softeners
Strictly speaking, a water softener isn’t a filtration system but an ion exchange system that replaces calcium and magnesium ions (which cause hardness) with sodium or potassium ions. The result is soft water that doesn’t leave scale on taps, showerheads, and heating elements.
Hard water is less of an issue in the Newcastle region than in some other parts of Australia, but it can still contribute to scale buildup in hot water systems and appliances. A water softener can be used on its own or in combination with a filtration system.
Best for: households with hard water, visible scale on taps and showerheads, or repeated issues with hot water system efficiency.
6. UV Purification Systems
Ultraviolet purification uses UV light to kill bacteria, viruses, and other microorganisms in the water. It doesn’t remove dissolved solids or chemicals, so it’s usually used as one stage in a multi-stage system rather than as a standalone solution.
UV purification is more relevant for households on tank water or bore water than for those connected to the mains supply, where microbiological treatment is already carried out during the treatment process.
Best for: households on tank or bore water, or as an additional stage in a multi-stage filtration system.
Key Questions to Ask Before You Choose
Before deciding on a system, it helps to think through a few practical questions:
- What are you trying to fix? Taste and smell issues are usually addressed by activated carbon. If you want to remove heavy metals or dissolved solids, you need something more substantial like reverse osmosis.
- What’s your budget? Entry-level under-sink filters start from a few hundred dollars installed. Whole-house systems or RO systems can range from several hundred to a few thousand dollars depending on the complexity.
- How much water does your household use? High-volume households may find a point-of-use RO system too slow and may benefit from a larger whole-house system.
- Do you rent or own? Renters need to consider what can be installed without making permanent changes. Some under-sink systems need permission from the landlord.
- What’s the ongoing cost? Cartridges and membranes need regular replacement. Factor this into the total cost of ownership over a few years, not just the upfront price.
Getting Your Water Tested
If you’re serious about choosing the right filtration system, the best starting point is a water test. This gives you an accurate picture of what’s actually in your water rather than guessing based on taste or smell alone.
Water testing kits are available at hardware stores for basic checks. For more detailed analysis, independent water testing services can identify specific contaminants, heavy metals, and mineral content. Once you know what’s in your water, it’s much easier to choose a system that addresses the actual problem.
Tip: A water test costs relatively little and can save you from buying a system that doesn’t address your specific concern. It’s worth doing before committing to a larger investment.
Installation and Maintenance
Basic jug and countertop filters need no plumbing. Everything else does. Under-sink filters, reverse osmosis systems, and whole-house systems all involve connecting to your water supply, which in most cases means using a licensed plumber to make sure the work is done properly and to code. Our residential plumbing team handles this kind of work across the Newcastle area every week.
Incorrect installation can lead to leaks, water damage, and in some cases void the warranty on the filtration unit. It’s also worth considering ongoing maintenance when you choose a system. Cartridges and membranes have a finite service life and need to be replaced on schedule to keep the system working effectively. A neglected filter can actually make water quality worse over time. The same goes for the gear you already have at home, so it pays to keep your hot water system and other appliances protected from scale and sediment.
At Green Planet Plumbing, we supply and install water filtration systems for Newcastle and Lake Macquarie homes. If you’re not sure which system suits your situation, we’re happy to talk it through and give you a recommendation based on your water quality concerns and budget.
Which System Is Right for You?
Here’s a quick comparison to help you narrow it down:
| System Type | Best For | Removes |
| Jug / countertop filter | Renters, basic taste improvement | Chlorine, some sediment |
| Under-sink filter | Households wanting point-of-use filtered drinking water | Chlorine, sediment, some heavy metals |
| Reverse osmosis | Thorough filtration for drinking and cooking | Heavy metals, dissolved solids, fluoride, bacteria |
| Whole-house filter | Full-home protection including appliances | Sediment, chlorine, scale |
| Water softener | Hard water and appliance protection | Calcium, magnesium (hardness) |
| UV purification | Tank or bore water microbiological safety | Bacteria, viruses, microorganisms |
Talk to Your Local Newcastle Plumber
Choosing and installing a water filtration system is a straightforward process once you know what you’re dealing with. If you’d like advice on the right system for your home, or you need a licensed plumber to handle the installation, give us a call.
We service Newcastle, Lake Macquarie, Maitland, Cessnock, and the broader Hunter Region. Call us on 02 4911 9402 or get in touch online for a free quote.