Should I Install an Under-Sink Water Filtration System In Sydney?
Sydney homeowners know the importance of clean, fresh-tasting water, particularly in the Hills District, where water quality can vary between suburbs. Installing an under-sink water filtration system provides filtered water straight from the tap, improving taste and removing unwanted contaminants—all while keeping your kitchen space free from bulky water jugs and bottles.
But which system is best for Sydney homes, and how do local water conditions influence your choice? Here’s everything you need to know before installing an under-sink water filter in Sydney.
Why Install an Under-Sink Water Filter in Sydney?
Sydney’s drinking water is supplied by catchments and dams in the Greater Sydney region, treated by Sydney Water to meet the Australian Drinking Water Guidelines. While the water is considered safe, some residents notice chlorine taste, occasional sediment, and varying mineral content that can cause scale build-up in appliances.
An under-sink filtration system removes these unwanted elements, improves taste, and ensures consistently high-quality drinking water.
Common concerns in Sydney include:
- Chlorine taste and odour – Used for disinfection, but can be noticeable in some areas.
- Sediment and rust particles – Can be present in homes with older pipes or after water main repairs.
- Hard water minerals – Sydney’s water is moderately soft, but some areas experience scale build-up on taps and kettles.
- Fluoride and heavy metals – Some residents prefer to remove fluoride and other trace metals from their water supply.
By choosing the right under-sink filtration system, you can improve the quality of your drinking water while protecting your plumbing from scale deposits.
Best Types of Under-Sink Water Filtration Systems for Sydney Homes
Different filtration systems target specific water issues. The best option depends on your local water quality, household needs, and available space.
1. Carbon Block Filters – The Most Common Choice
Carbon filters use activated carbon to remove chlorine, sediment, and some chemicals. These filters are widely used in Sydney homes, particularly where taste and odour improvement is the main concern.
- Removes: Chlorine, sediment, organic compounds, and some heavy metals.
- Filter Micron Rating: 0.5 to 5 microns.
- Replacement: Every 6-12 months.
2. Reverse Osmosis (RO) – The Purest Option
Reverse osmosis systems push water through a semi-permeable membrane, removing up to 99 percent of dissolved solids, including fluoride, heavy metals, and bacteria. They are a good choice for Sydney homes looking for ultra-clean water but require more space and maintenance.
- Removes: Fluoride, chlorine, bacteria, viruses, heavy metals, and dissolved solids.
- Filter Micron Rating: 0.0001 microns.
- Replacement: Every 6-24 months depending on the component.
3. Ultraviolet (UV) Filtration – Extra Protection
UV filters kill bacteria, viruses, and parasites using ultraviolet light. While Sydney’s mains water is disinfected, these systems provide additional microbiological protection, particularly for homes using rainwater tanks.
- Removes: Bacteria, viruses, and parasites.
- Filter Micron Rating: Not applicable (light-based).
- Replacement: UV lamp changes every 12 months.
Choosing the Right Under-Sink Filter for Your Sydney Home
The best filtration system depends on your water supply and household needs. Key factors to consider include:
- Water Source – Sydney’s mains water is treated but may have chlorine taste and occasional sediment. Homes using rainwater tanks may require UV filters.
- Household Size – Larger households require a higher-capacity filter to maintain good water pressure.
- Maintenance and Budget – Carbon filters are cost-effective, while reverse osmosis provides the highest level of filtration at a higher cost.
A multi-stage system, such as the Puretec ESR2, is a popular choice for Sydney homes, removing chlorine, sediment, and heavy metals while maintaining strong water pressure.
Sydney Plumbing Regulations: Do You Need a Plumber?
Installing an under-sink water filter in New South Wales must comply with Sydney Water plumbing regulations to ensure proper pressure, hygiene, and safety.
Can You Install It Yourself?
Basic carbon filter systems may be installed by homeowners if no permanent plumbing modifications are required. However, more advanced systems, such as reverse osmosis or UV filtration, must be installed by a licensed plumber to comply with the Plumbing Code of Australia and NSW Fair Trading regulations.
Why Hire a Professional Plumber?
- Ensures compliance with AS/NZS 3500 Plumbing and Drainage Standards.
- Prevents leaks and water damage, which can impact home insurance coverage.
- Guarantees proper pressure balancing to maintain optimal water flow.
- Professional installation includes warranty coverage and safety checks.
A plumber will also assess pipe compatibility—most Sydney homes have 15mm copper pipes, but newer properties may use PEX piping, requiring specific fittings.
Hiring a licensed plumber in the Hills District ensures a safe, leak-free installation with long-term performance.
How Professionals Ensure Your Filter Performs in Sydney’s Climate
Sydney’s warm summers and fluctuating temperatures mean that proper installation and maintenance are essential to keep your water filter working effectively. A professional plumber will:
- Install the system away from heat sources such as dishwashers to prevent premature wear.
- Perform regular pressure tests to prevent leaks and ensure efficient water flow.
- Flush the system after installation to remove trapped air and contaminants.
- Use high-quality fittings and O-rings to prevent leaks and pressure drops.
- Schedule regular servicing to replace filters and maintain system efficiency.
A professionally installed system will ensure clean, reliable water year-round, even during Sydney’s hottest summer days and we can ensure your refrigerator can be plumbed into this as well.
Frequently Asked Questions About Under-Sink Water Filters in Sydney
How much does an under-sink water filter cost?
The average cost is $300-$800 for the unit, plus labour
How long do filters last?
- Carbon filters: 6-12 months
- Reverse osmosis membranes: 2-5 years
- UV lamps: 12 months
Do water filters reduce water pressure?
Properly installed systems maintain good water pressure. Reverse osmosis systems may slightly lower flow rates due to their filtration process.
Does an under-sink filter add value to my home?
Many Sydney buyers view built-in water filtration as a desirable home feature, particularly in areas with hard water or strong chlorine levels.
Is an Under-Sink Water Filter Worth It for Sydney Homes?
Installing an under-sink filtration system is a smart investment for Sydney homeowners. It ensures:
- Improved water taste and odour removal.
- Reduced chlorine, sediment, and contaminants.
- A cost-effective, eco-friendly alternative to bottled water.
- Minimal maintenance with long-term reliability.
By choosing the right system and hiring a licensed Sydney plumber, you’ll enjoy clean, fresh water straight from your tap—without the hassle of water bottles or countertop filters.
For professional under-sink water filter installation in Sydney, contact Plumbmaster Plumbing for expert advice and installation services in the Hills District.
