A home water filtration system comes in three types, and choosing the type matters more than choosing the brand. An under sink system filters one drinking tap, a whole house system filters every tap, and a benchtop gravity filter needs no plumbing at all. This page compares seven systems on Amazon Australia across all three.
We have not tested these filters. Every fact below is the listing's own wording, and where a listing does not say it fits Australian plumbing we say so. If you want a filter with no installation at all, see our water filter jug guide.
Best overall under sink system: iSpring RCC7AK
Best overall under sink system: the iSpring RCC7AK, because it has the most ratings of any system here and its listing describes six stages with a reverse osmosis membrane and an alkaline remineralisation filter.
The listing describes a six stage under sink reverse osmosis system rated at 75 GPD (about 284 litres a day). It describes a thin film composite semipermeable membrane that filters down to 0.0001 micron, and an alkaline remineralisation filter that balances pH using calcite and reintroduces calcium, magnesium, sodium and potassium. The listing also says it filters 1,000+ water pollutants, including chlorine and fluoride. It holds 4.6 stars from 13,998 ratings.
It suits a household that wants one filtered drinking tap in the kitchen with the most buyer feedback behind it. The honest catch: the listing does not say it fits Australian taps or threads, and it is one of the dearest picks here, so check your sink fittings first.
Best simple direct connect filter: Frizzlife MK99
Best simple direct connect filter: the Frizzlife MK99, because its listing describes a quick change cartridge with a built in shut off valve and fittings for about 0.95 cm and 1.3 cm connections.
The listing title says NSF/ANSI 53&42 certified and 0.5 micron, and the bullets describe a two stage compound filter. It comes with direct connect hoses for about 0.95 cm supply valves and conversion fittings up to about 1.3 cm. The listing says the filter cap has a built in shut off valve, so you do not need to turn off the water supply to change the cartridge, and that each cartridge can be used for 2 years, though it suggests replacing it after 6 to 8 months for better filtration. It holds 4.5 stars from 7,222 ratings.
It suits anyone who wants a straightforward filter on the cold water line rather than a six stage reverse osmosis system. The honest catch: the listing words its fittings for EU kitchen sinks and does not say Australian fit, so confirm your tap connection before buying.
Best value under sink: Waterdrop 10UA-UF
Best value under sink: the Waterdrop 10UA-UF, because it is the lowest priced under sink system here with more than a thousand ratings, and its listing describes ultrafiltration with an activated carbon block and a direct connect set up.
The listing describes a 0.01 micron ultrafiltration membrane with an activated carbon block, push to connect fittings and an install in less than 3 minutes, and a twist and lock filter change. It says each filter has a maximum service life of 12 months or 41,600 litres on municipal water, and that its small size makes it the best choice for a rented apartment. It holds 4.5 stars from 1,917 ratings.
It suits a first under sink filter on a tighter budget. The honest catch: the listing words its filter claims in marketing terms, so read exactly what it says it reduces before relying on it.
Best whole house system: iSpring WGB21B
Best whole house system: the iSpring WGB21B, because it has the most ratings of the whole house systems here and its listing describes two stages, about 2.5 cm ports and a pre assembled mounting bracket.
The listing describes two stages of filtration with sediment and carbon block filters, and up to about 56.8 litres per minute for the entire home through about 2.5 cm input and output ports. The filters, about 11.4 by 25.4 cm, have a capacity of about 189,000 litres, which the listing says can provide up to a full year for a family of four. A pressure release valve is included. It holds 4.6 stars from 1,863 ratings.
It suits a family that wants every tap filtered and is happy with a DIY install, which the listing describes. The honest catch: the listing gives ports of about 2.5 cm without saying they match Australian plumbing, so confirm the fit before you buy.
Best whole house with Watermark wording: Shield Big Blue Whole House Filter
Best whole house with Watermark wording: the Shield Big Blue, because its listing states Watermark certified AS3497 with BSP brass ports of about 2.5 cm and three filter stages.
The listing title says Watermark Certified AS3497 and 75L/min. The bullets describe Big Blue cartridges of about 51 by 11.4 cm in three stages: a 5 micron pleated sediment, a 1 micron antibacterial sediment and a 0.5 micron carbon block filter. It lists three pressure gauges, a wall mount bracket for a garage, shed or undercover outdoor area, all filters included, and a size of 57 by 20 by 67 cm. It holds 5.0 stars from 9 ratings.
It suits a medium to large household on chlorinated town water, which is how the listing describes it. The honest catch: only 9 ratings so far, and it is the dearest whole house option here.
Best under sink with Australian standard wording: Shield Twin Under Sink Filter
Best under sink with Australian standard wording: the Shield twin under sink filter, because its listing includes a tee valve, pressure limiting valve, filter tap and tubing and states a BSP fit of about 1.3 cm.
The listing title says Australian Standard Approved. The bullets describe a two stage system with a twist and replace filter change that needs no tools, a complete installation kit, and a compact body designed to fit under the sink. The listing says the filters last up to 12 months depending on water quality and usage, and that it suits most standard kitchen plumbing at a BSP size of about 1.3 cm. It holds 4.9 stars from 13 ratings.
It suits someone who wants the fittings in one box and Australian wording in the listing. The honest catch: only 13 ratings so far, and the listing does not name which Australian standard it means.
Best benchtop with no plumbing: VEVOR Gravity Fed Water Filter
Best benchtop with no plumbing: the VEVOR gravity fed filter, because it sits on the bench and its listing describes a stainless steel body holding about 8.5 litres with two carbon filters.
The listing describes a gravity fed 304 stainless steel countertop system holding about 8.5 litres, with two coconut activated carbon filters and a spigot, set up without electricity. It says each pair of filters can last up to about 22,700 litres and that the capacity meets the drinking needs of 1 to 4 people. The listing names home, camping and RV use. It holds 4.7 stars from 132 ratings.
It suits a renter or anyone who cannot or does not want to touch the plumbing. The honest catch: it holds about 8.5 litres and you refill it yourself, so it suits a small household.
How to choose a home water filtration system
Choose the type first
An under sink system treats the kitchen drinking tap only. A whole house system, such as the iSpring WGB21B or the Shield Big Blue, treats the water for the whole home, including showers and laundry, which the Shield listing names. A benchtop gravity filter like the VEVOR needs neither plumbing nor power. For the shower alone, our shower filter guide covers that. Our water filter guide compares jugs, under sink and benchtop filters in one place.
Check the fittings against your plumbing
Four listings give a connection size: about 0.95 and 1.3 cm for the Frizzlife MK99, about 2.5 cm ports for the iSpring WGB21B, BSP brass ports of about 2.5 cm for the Shield Big Blue and a BSP size of about 1.3 cm for the Shield twin. Only the Shield listings use Australian wording. Compare the size on the listing with the tap or pipe at your home before you buy.
Read the standards wording closely
Listings use different wording: Watermark certified AS3497 on the Shield Big Blue, Australian Standard Approved on the Shield twin, and NSF/ANSI 53&42 certified in the Frizzlife title. These are the listings' own claims, so compare the exact wording and what each listing says the filter reduces.
Compare filter life
The listings give different lives: up to 12 months or 41,600 litres for the Waterdrop 10UA-UF, 2 years for a Frizzlife MK99 cartridge, with a change suggested after 6 to 8 months, up to a full year for the iSpring WGB21B and up to 12 months for the Shield twin. Replacement filters are the running cost, so check which cartridge your system takes.
Match the size to your household
The VEVOR listing gives 1 to 4 people, the iSpring WGB21B listing a family of four, and the Shield Big Blue listing medium to large households. For a drinks station that also needs hot and cold water, see our water dispenser guide.
Weigh the rating counts
The iSpring RCC7AK has 13,998 ratings and the Frizzlife MK99 has 7,222, so their scores are well tested. The Shield Big Blue has 9 ratings and the Shield twin has 13, which is too few to judge on a high star score.
Frequently asked questions
What is the best home water filtration system in Australia?
For most homes it is the iSpring RCC7AK under sink system, with six stages, an alkaline remineralisation filter and 4.6 stars from 13,998 ratings. For a simpler direct connect filter choose the Frizzlife MK99, and to filter every tap choose the iSpring WGB21B. Check each listing's fittings against your plumbing first.
What is the best whole home water filtration system in Australia?
The iSpring WGB21B is the best whole house pick here: two stages, about 2.5 cm ports, a pre assembled mounting bracket and 4.6 stars from 1,863 ratings. The Shield Big Blue states Watermark certified AS3497 and has three stages, but only 9 ratings so far, so treat its 5.0 stars as early.
What is the best reverse osmosis water filter in Australia?
The iSpring RCC7AK is the only reverse osmosis system here. Its listing describes a thin film composite membrane that filters down to 0.0001 micron across six stages, plus an alkaline remineralisation filter, and it holds 4.6 stars from 13,998 ratings. The Waterdrop 10UA-UF uses ultrafiltration with a carbon block instead.
What is the best filtration system for home drinking water?
An under sink system is the focused choice for drinking water. Our picks are the iSpring RCC7AK for reverse osmosis, the Frizzlife MK99 for a quick change direct connect filter, and the Waterdrop 10UA-UF for the lowest priced under sink system with more than a thousand ratings. A whole house system treats every tap instead.
How long does a water filter last?
It depends on the filter. The Waterdrop 10UA-UF gives a maximum of 12 months or 41,600 litres on municipal water, the Frizzlife MK99 lists a cartridge that can be used for 2 years but suggests a change after 6 to 8 months, and the iSpring WGB21B lists up to a full year for a family of four.
Which home water filter is easiest to install?
The listings describe the Frizzlife MK99 with a tool free, quick change cartridge the Waterdrop 10UA-UF with push to connect fittings and an install in less than 3 minutes, and the Shield twin with a complete installation kit for most standard kitchen plumbing at a BSP size of about 1.3 cm. Only the Shield twin carries Australian wording.
How much does a home water filtration system cost?
Check each listing for today's price. The Waterdrop 10UA-UF and the Shield twin under sink filter are the lowest priced here, the iSpring WGB21B whole house system costs more, and the iSpring RCC7AK reverse osmosis system and the Shield Big Blue whole house filter are the dearest. Replacement filters are the running cost.
What is the best water filter for renters?
The VEVOR gravity fed filter sits on the bench, the listing says it installs without electricity, and it holds 4.7 stars from 132 ratings, though its body holds about 8.5 litres and suits a small household. The Waterdrop 10UA-UF listing also calls its small size the best choice for a rented apartment.
Do these filters meet Australian standards?
Two listings use Australian wording. The Shield Big Blue states Watermark certified AS3497, and the Shield twin under sink filter says Australian Standard Approved without naming the standard. The Frizzlife MK99 title says NSF/ANSI 53&42 certified. The other four listings do not name a standard.
