3 way mixer taps in Australia: Stefani for most kitchens, Philips if you want the WaterMark number, Puretec for the kit

A 3 way mixer tap is a kitchen mixer with a third waterway inside it: hot and cold mains on one lever, filtered water from the under-sink filter on another, out of the same spout, with the filtered line kept separate so it never touches unfiltered water. It replaces the small extra filter tap that most under-sink systems come with, and saves drilling a second hole. For most kitchens the one to buy is the Stefani 3 Way Filter mixer, $249 at Bunnings in chrome or matte black on 1 November 2026: WaterMark approved and lead-free on the listing, 5 L/min at WELS 5 star, with a 2-year warranty and Stefani’s WaterMark-listed twin filter on the same shelf. The catch with every 3 way tap bar two is that the filter is not in the box.

Which 3 way mixer tap should you buy?

Buy on three things the listings actually state: whether the tap carries WaterMark, whether the filter is included, and the price with the filter added. On those, the Stefani wins for most kitchens. Bunnings’ listing says “Watermark approval to meet Australian standards”, a solid brass body made to AS/NZS 6400, lead free, a 360 degree swivel spout with a dual-chamber design that keeps filtered water separate, 5 L/min, and a 2-year warranty. Add Stefani’s twin under-sink system ($159 at Bunnings, WaterMark licence 022200, see the under-sink guide) and you have a certified tap and filter for about $410 before the plumber. The matte black version is the same price with no flow figure on its listing.

The Philips ASH3511 is the pick if you want the paperwork: Philips’ page prints “Watermark Lead Free AS3718 WMKA032315” and “WELS rating 5.0 - Licence 1384”, which is more than any other maker here manages, and names the tap as the accessory for its AUT9333 FastFlow (our under-sink pick, WaterMark listed and NSF/ANSI 53 certified) and its AUT8950 and AUT9510 reverse osmosis stations. Philips shows no price; Amazon Australia sells it from the Philips store in brushed nickel (ASH3511) and matte black (ASH3512), so check the button.

Puretec sells the tap two ways. The Tripla T1 alone is $669.44 RRP, chrome, 7.5 L/min at WELS 4 star, with a 6-year warranty (one year parts and labour, then five years parts), the longest here. The Z1-T1 kit at $911.67 RRP adds the Ultra Z 0.1 micron under-sink filter; the TW1 kit at $274.31 pairs a twin under-sink filter with Puretec’s own filter tap rather than a 3 way mixer, which is worth knowing if the mixer is more than you need. Puretec’s pages don’t mention WaterMark for the Tripla, so ask Puretec or your plumber.

The Aquaport curved 3 way mixer at Bunnings is the only tap under $400 with a filter in the box: a twin-stage sediment and granular carbon system with PEX connectors, for $398.51. Its listing states no WaterMark and no flow rate, and it sat at 2.4 stars from 22 reviews when we checked, so it’s the budget-with-filter option rather than our pick.

Amazon Australia also sells generic stainless 3 way taps that undercut all of these, and two of them print their certification numbers. The YAMATARO D70502-D lists WaterMark licence WM-7511, WELS registration T48323 at 6 star and 4.5 L/min, AS/NZS 6400:2016, and a 6-year warranty, with hoses and fittings in the box; it’s the budget WaterMark pick if you can live with 4.5 L/min and a seller’s warranty rather than a distributor’s. If you want a pull-out spray, the KUNPON 205.20 on Amazon Australia is the one tap here with one: a two-handle 304 stainless mixer with a separate filtered waterway, 6 L/min at WELS 5 star, and a listing that prints its WELS licence (1560) and registration (T46861) and says WaterMark approved. It’s a generic brand with no warranty term on the page, so check the registration number on the WELS site before the plumber books it.

The Zip 94574 is the one for a kitchen where the tap is on show: a brushed stainless arc mixer with Zip’s 0.2 micron Micropurity filtration, $718 at Winning Appliances on 1 November 2026 against an $845 RRP. Winnings lists the 0.2 micron filter cartridge (93701) as a $225 accessory and the tap’s spec sheet line reads “0.2 sub micron filter”, which leaves it unclear whether the first cartridge ships in the box; ask before you buy.

What’s in the box, and what the plumber needs

Five of the seven are taps only. You’ll need an under-sink filter with a separate outlet for a filter tap (most twin and triple systems, the Philips FastFlow, any RO station), the 1/4 inch or 3/8 inch tube from the filter to the tap’s filtered inlet, and the two mains flexible hoses, which Stefani includes. The tap mounts in a standard single hole, so the real check is the cupboard: a twin housing needs about 35 cm of height plus room to unscrew it for cartridge changes.

Under the Plumbing Code of Australia, the products a licensed plumber installs are meant to carry WaterMark certification, which the ABCB describes as mandatory for certain plumbing and drainage products. That’s why we lead with the two taps whose listings state it. A plumber can lawfully decline to fit an uncertified tap, and some will, so settle it before you buy rather than after.

Flow is the other thing to understand. WELS rates the mains side: 5 star at 5 L/min for the Stefani, 4 star at 7.5 L/min for the Puretec. The filtered side is governed by the filter, not the tap; a carbon block or a 0.1 micron Ultra Z will give you a litre in 20 to 40 seconds, which is why these taps keep the two lines apart rather than filtering everything.

3 way mixer or a separate filter tap?

If your sink already has a second hole, or you don’t mind drilling one, a separate filter tap is the cheaper answer: Stefani’s lead-free, WaterMark-certified filtration tap is $45 at Bunnings and most under-sink kits include one. A 3 way mixer costs from $249 and does the same job through one hole with nothing extra on the bench. Buy the 3 way when you’re replacing the mixer anyway, when the bench or sink can’t take another hole (stone benchtops, undermount sinks), or when you want the filtered line hidden. Buy the small tap when the mixer you have is fine and the budget is tight.

If what you actually want is boiling or chilled water, that’s a different product: the Zip HydroTap, Billi and InSinkErator units in our instant hot water dispenser guide are plumbed systems from $1,365 for the unit alone.

The one trap

Pricing the tap without the filter. A $249 Stefani or a $669 Puretec Tripla pours nothing filtered until an under-sink system is connected, and the plumber’s visit is the same whether you have the filter ready or not. Price the tap, the filter and the install together, and if the install is the sticking point, the screw-on tap filters at Bunnings need no plumber at all.

What we left out and why

• Puretec Z1-E10 and Z1-E20 kits ($1,050.91 to $1,110.78 RRP). The same Ultra Z filter with Puretec’s premium tap bodies in six finishes; the Z1-T1 is the entry version of the same kit.
• Puretec Ecotrol undersink UV kits ($1,467.77 to $1,536.33 RRP). A rainwater filter and UV with a Tripla tap, for tank households; see the rainwater and UV guides.
• Puretec SPARQ S5 ($3,827.14 RRP). Sparkling, chilled and ambient filtered water; a different category.
• Aquaport filtered water sink mixer ($303.47 at Bunnings). Two levers, hot and cold on one and filtered on the other, but the listing states no filter, flow, WaterMark or warranty.
• Aquaport square 3 way ($398.51, special order). The curved model’s twin; same listing gaps.
• Nero, Oliveri and Mondella 3 way taps. Sold through plumbing suppliers; we found no retailer page with a price we could load on the day.
• Acumios 3 way tap and other generic Amazon taps. Stainless, 6 L/min, but no WaterMark licence on the listing; we included only the two generics that print theirs.