UV Rainwater Tank Filter Systems
Top choice water filtration systems in Melbourne
Protect Your Home with a Rainwater Filter Built for Australian Conditions
Harvesting rainwater saves money and eases the load on mains supply, but tank water is rarely as clean as it looks.
As rain runs off your roof it collects dust, leaves, bird droppings and sediment, and tanks are an ideal home for bacteria, viruses and parasites like Giardia and Cryptosporidium. If you plan to drink, cook or bathe in your tank water, it needs proper filtration first.
At PureFlow Filtration™ we build purpose-made UV rainwater tank filter systems for Australian homes. Our 3-stage setup pairs sediment pre-filtration with high-output ultraviolet (UV) disinfection, so you get clear, safe water at every tap with no chlorine, salt or chemicals. It starts with a free in-home water test and recommendation built around your tank, pump and plumbing.
Benefits of Rainwater Filtration
Filtering your rainwater before it enters the home is a simple step that makes every tap safer.
Health
Rainwater isn’t treated like mains water, so without proper filtration, it may contain pathogens, sediment, and contaminants from bird droppings, leaves, or rust. A multi-stage rainwater filter helps make tank water safer to drink, cook with, and bathe in.
Home Protection
Unfiltered tank water can cause sediment buildup, pipe corrosion, and damage to washing machines, dishwashers, and kettles. A filtration system keeps your home’s infrastructure clean and running efficiently.
Sustainability
Filtered rainwater reduces your environmental footprint and gives you greater water security, especially in rural or off-grid properties. Use it confidently for your family, garden, or even emergency supply.
What is a UV Water Filter System?
A UV water filter is a disinfection system that uses ultraviolet light to neutralise bacteria, viruses and other pathogens in water. No chemicals, no salt, no added taste, just light doing the work. The UV light damages the DNA of microorganisms so they can't reproduce or make you sick, and it treats water in real time as it flows through.
UV systems are installed at the point where tank water enters your home, so the water you use in the kitchen, bathroom and laundry is all treated. For UV to work properly the water has to be clear, which is why we always pair the lamp with multi-stage sediment pre-filtration. On its own, a UV lamp can't reach microbes hiding behind dirt or cloudiness, so filtering first is essential.
Why You Need to Filter Rainwater
Rainwater may be free, but it’s not always clean. As it runs off your roof and into your tank, it can collect a range of unwanted contaminants:
- Dirt, rust, leaves, and sediment
- Bird droppings and organic debris
- Bacteria, viruses, and protozoa like Giardia
Rainwater starts pure, but it often requires filtration to make it safe for household use - especially if you’re using it for drinking water.
A proper rainwater filter system helps reduce these risks and ensures your water is clear, safe, and great-tasting.
Why PureFlow Filtrarion™ is the #1 Choice for Water Filters in Melbourne
Real Reviews. Real Results. Really Clean Water.
Five Star Google Reviews
Vico Lintang
Amazing product!!! We installed this 2 weeks ago and since that my daughter eczima never flare up anymore. Monte was very informative and helpful throughout the process. Very recommended!!
Chadstone
Jessica Ranci
We love our PureFlow filter. The bath and shower no longer smell of chlorine when we run them, and the water tastes delicious. We previously used a ceramic benchtop filter, but having PureFlow installed for...
Read MoreMontmorency
Ruben Marks
I called a few different companies to find exactly what I was looking for, and PureFlow was the most professional by far. They sent out Monte, who was excellent to talk to about all my...
Read MoreRingwood
Adam P
10/10: I recently had a water filtration system supplied and installed by PureFlow Filtration, and I couldn’t be more impressed. From start to finish, the service was absolutely seamless. The price was the best I...
Read MoreMornington
Gaurav J
Monte is very patient. He came to our house and tested the water from the kitchen tap. He was able to answer all the questions we asked him. The setup was very easy, and the...
Read MoreTarneit
Asil Hakimzadav
They installed my system last week, and since then, the water tastes so good, and the chlorine smell is gone. Installing the filter has been one of the best decisions I’ve made, especially with a...
Read MoreClyde North
Ravi Sandhu
We are really satisfied with our whole house PureFlow filter and the reverse osmosis filter system under the sink. We had this product installed a couple of days ago, and we’ve already started noticing the...
Read MoreWeir Views
Akash Singh
We’ve noticed a real improvement in our skin and hair since installing the system, and the water tastes much cleaner. The stainless steel unit is solid and performs far better than smaller plastic alternatives. Monte’s...
Read MoreCranbourne
Harchand
The water quality has made a huge difference to my hair, our laundry, and drinking water. The PureFlow team answered all our questions and made the setup process easy. Great product and excellent customer service.
Tarneit
Patricia De Sousa
The water tastes so much better that even my dog won’t drink from anywhere else. There’s no more buildup on the shower glass either—it stays crystal clear.
Burnside Heights
Manpreet Kaur
I absolutely love my PureFlow water system—it’s one of the best decisions I’ve made for my home. I started researching water purifiers after hearing about the water contamination in Melbourne, and after speaking with Monte...
Read MorePakenham
How Our 3-Stage UV Rainwater System Works
A common misconception is that a UV lamp alone is enough. It isn't. Ultraviolet light can only disinfect water it can actually penetrate, so if there's sediment or organic matter floating about, microbes shelter behind it and slip through untreated. That's why every PureFlow system filters first, then disinfects.
Our 3-stage rainwater tank filtration system uses a combination of physical filtration and UV disinfection to treat tank water effectively:
Stage 1
20-Micron Pleated Sediment Filter
Removes larger particles such as rust flakes, suspended solids, leaves, and sand. The pleated design increases surface area for better performance and lifespan.
Stage 2
5-Micron Polyspun Filter
Captures finer debris missed in stage one - including silt, fine dirt, and smaller rust particles - ensuring high-clarity water before UV treatment.
Stage 3
Advanced UV Disinfection
Neutralises bacteria, viruses, and pathogens like E. coli using ultraviolet light. This non-chemical disinfection step makes your tank water safe for drinking and cooking.
Our Italian-made filter system handles up to 70 litres per minute, making it suitable for most Australian homes. It can be installed before the pump or post-tank depending on your setup.
Why Filtration Before UV Matters
One of the most common misconceptions is that UV alone is enough. In reality, ultraviolet light can only treat clear water. If there’s debris, dirt or organic matter floating in the water, the UV light can’t reach and deactivate the microorganisms properly.
That’s why we use a three-stage approach:
- 20-micron sediment filter – captures larger particles like rust, leaves, and sand
- 5-micron polyspun filter – removes fine dirt, silt and remaining sediment
- UV light disinfection – neutralises bacteria, viruses and parasites without affecting water taste or pH
This process ensures that water is not only clean, but safe, all without relying on chlorine or additives.
For added chemical reduction, you can replace either sediment stage with an optional carbon cartridge.
Is It Safe to Drink Rainwater with a Filter?
Yes, with the right system in place. When fitted with pre-tank filters and a UV disinfection stage, filtered rainwater meets the safety needs for everyday household use, including drinking.
Our systems are ideal for:
- Off-grid and rural homes
- Primary or supplementary water supply
- Families wanting to avoid chemical disinfectants
What Makes Our Rainwater Tank Filters Different?
- 3-stage protection: sediment + fine filter + UV
- Designed specifically for Australian rainwater conditions
- Robust 70LPM flow rate for whole-home use
- No chlorine or chemicals required
- Italian-made system, built to last
You get clean, safe water without compromising on pressure, taste, or performance.
Our Water Filter Systems Range
Our advanced four-stage whole house filtration system purifies water down to 0.5-1 microns using large 10″ or 20″ cartridges, optimising efficiency and longevity while effectively eliminating contaminants. This comprehensive system ensures clean, filtered water is delivered to every tap and shower throughout your home—enhancing your family’s health and well-being, protecting your plumbing and appliances, and improving your overall quality of life.
Our advanced five-stage reverse osmosis system reduces up to 98% of contaminants, including PFAS and fluoride, while enriching the water with essential minerals. This results in clean, high-alkaline water with a pH of 9.5, offering added peace of mind and supporting overall health. Featuring a USA-made RO membrane and a 12-litre stainless steel storage tank, the system ensures durability, safety, and the highest quality drinking water for your family.
Our premium UV Rainwater Filtration System eliminates bacteria and viruses from your tank water while capturing both fine and coarse sediment. Made in Italy, this all-in-one unit includes dual-stage filtration and a high-output UV lamp, ensuring reliable disinfection without the need for chemicals. An intelligent countdown timer with a built-in alarm system monitors UV lamp life and alerts you when replacement is due, providing continuous, safe water to every tap—ideal for homes relying on rainwater.
The Benefits of UV Filtration
UV water filtration is popular among households looking for an effective, low-maintenance way to disinfect tank water. Here's why it's a smart solution:
- Chemical-free – no taste, no smell, no harmful byproducts
- Fast – treats water in real time as it flows
- Low energy use – efficient UV lamps, no moving parts
- Eco-friendly – no salt, no waste, no added substances
- Low maintenance – just occasional lamp and filter replacements
It’s also one of the few filtration methods that’s effective against chlorine-resistant organisms like Cryptosporidium and Giardia, both common in rainwater tanks.
Choosing the Right Rainwater Filter System
Not all filters are created equal. A basic mesh or cartridge filter may remove visible dirt but won’t protect against harmful microbes. That’s why we combine physical filtration with UV purification for complete protection.
If you're unsure whether your current setup is safe, our team can visit your property and provide a tailored recommendation based on your tank, pump, and plumbing layout.
Who Needs a UV Rainwater Filter
Our UV filtration system is ideal for:
- Homes using rainwater tanks for drinking, cooking or cleaning
- Off-grid or semi-rural properties with no mains water
- Families looking to avoid chlorine or chemicals
- Anyone wanting reliable protection against microbes in tank water
It’s a safer, simpler way to ensure your household has clean, healthy water, no matter where it comes from.
We offer free in-home water assessments across Melbourne and surrounding areas. We’ll test your water, look at your tank setup, and recommend the right solution for your household.
Get Your Free Water Test
Ready to make the most of your rainwater? Let’s ensure it’s clean and safe. Book a free in-home consultation and we’ll:
- Test your tank water
- Inspect your plumbing setup
- Recommend the best rainwater tank filter system for your needs
Why Choose PureFlow Filtration™
This is why our Rainwater Tank Filters are Australia's Top choice:
- 100% Australian owned and Melbourne based
- Free water testing and personalised advice
- Certified filters that meet Australian standards
- Premium stainless steel systems built to last
- Fast, professional installation by licensed plumbers
- Ongoing support from a friendly, local team
- Flexible payment plans and 0% interest options
- Full warranty on system and installation
At PureFlow Filtration™, we believe that Better Water is Better Living
We’re hands-on with everything we do. We only use filters we’ve tested ourselves, and we’re picky - if it’s not good enough for our own homes, we won’t offer it to you. Our systems are built for tough Aussie conditions, and every filter is checked and certified before it leaves our hands. We’re always looking for ways to improve, whether that’s smarter designs, better materials, or new ways to make things easier for busy families.
Curious about Melbourne’s water quality?
UV Rainwater Filter FAQs
Do I need a filter for my rainwater tank?
UV filters use ultraviolet light to deactivate microorganisms like bacteria, viruses, and parasites in water. The UV light damages the DNA of these microbes, preventing them from reproducing or causing illness. It’s a fast, chemical-free process that works in real time as water flows past the UV lamp.
What does a rainwater tank filter remove from the water?
Filters can remove dirt, debris, sediment, bacteria, viruses, chemicals, odors, and sometimes heavy metals, depending on the filter type. PureFlow system includes UV lights for bacteria and virus removal.
Which type of filter should I use for my rainwater tank?
Selection depends on your water use (drinking, laundry, gardening), tank location, and contaminants present. Common filter types include sediment, carbon, ceramic, and UV filters.
How do I choose the right size or model for my filter system?
Consider flow rate needs, pressure compatibility, filter capacity, and household water use. Larger households may need multi-stage systems with bigger cartridges.
How often should I change or clean the filters?
Maintenance frequency varies by type and usage but typically ranges from every 6 to 12 months for most filters. Some need cleaning when flow decreases.
How do UV water filters work?
How do UV water filters work?
Are UV water filters effective?
Yes, when paired with pre-filtration to remove sediment, UV filters are highly effective at neutralising up to 99.99% of harmful microorganisms, including E. coli, Giardia, and Cryptosporidium. They are a trusted method of disinfection worldwide.
Are UV water filters safe?
UV filters are very safe. They don’t add anything to the water, just use light to clean it. There are no chemicals, no residuals, and no impact on water taste or mineral content.
Are UV water filters worth it?
If you use a rainwater tank for any household use, especially drinking or cooking, a UV system is absolutely worth it. It gives you peace of mind that your water is safe, without ongoing chemical treatments or risk.
What’s the best UV water filter system for home use?
We believe our Italian-made 3-stage UV system is one of the best available in Australia. It’s been tested in hundreds of homes, handles up to 70L per minute, and includes both sediment and UV filtration, which is critical for effective treatment.