Which water filter is right for your home?

When families across the Eastern Suburbs call about water filtration, the first question is almost always the same: should we be looking at a whole-home system or something at the kitchen tap? Both solve real problems. The answer depends on your home, your household, and what you actually want to change about the water you are drinking, cooking with, and showering in.

Norton Plumbing is a Puretec Preferred Plumber and installs the full Puretec range. This guide covers all four options - the FilterWall whole-home system, the Tripla Elite tap and undersink filter, the RO270 reverse osmosis system, and the shower filter - so you can walk into a free home assessment already knowing which direction makes sense for you.

What do Puretec filters actually remove?

Both the FilterWall and the Tripla system reduce chlorine from Sydney mains water. Chlorine is what gives Sydney tap water that faint swimming-pool smell, which is more noticeable in summer.

FilterWall F5 and F6 (whole-home, large): three-stage filtration - a 20-micron washable pleated cartridge that catches sand, silt, rust, and larger particles; a 5-micron polyspun cartridge for finer sediment; and a 10-micron carbon block that reduces chlorine by up to 98%. The F6 swaps the fine sediment stage for a scale-reduction cartridge. Both models aid in the reduction of PFAS through carbon filtration.

FilterWall F3 and F4 (whole-home, compact): two-stage filtration - sediment and carbon - in a smaller 10-inch housing. The F3 is the standard version; the F4 adds scale reduction.

Tripla Elite (undersink tap filter): reduces chlorine, sediment, and bacteria including E. coli and Giardia at the kitchen tap.

RO270 (reverse osmosis): removes up to 98% of dissolved impurities - including fluoride, PFAS, heavy metals, salts, viruses, bacteria, and cysts - down to 0.0005 micron. The most thorough drinking water filtration available.

SF240-CH (shower filter): reduces chlorine, sediment, and heavy metals from shower water.

Whole-home FilterWall - who it suits

The FilterWall mounts on the outside of your home, directly on the incoming mains line, before water enters the house. Every tap - kitchen, bathrooms, laundry, outdoor - runs through the filter. You notice it in the taste of your drinking water, in the shower, in your kettle, and over time in your appliances and tapware.

It suits houses and townhouses with an accessible exterior wall near the water meter - a side passage, fence line, or service area. The unit is aluminium-clad and designed for outdoor placement. The F5 and F6 are available in four core colours and custom colours to match render, Colorbond fencing, or the side of the house.

The FilterWall is not suited to apartments above ground floor, where there is typically no access to an individual unit's mains line. Norton Plumbing will check your incoming mains pressure, look at where the FilterWall would sit, and give you a fixed quote on the spot. No obligation.

If you want to see what a FilterWall install looks like on an Eastern Suburbs home, we documented the full Clovelly install here.

Under-sink tap filter - who it suits

The Puretec Tripla Elite is a 3-way mixer tap made from 100% stainless steel. It runs normal hot and cold water plus a separate filtered line, fed by a Puretec Z1 undersink filter that sits inside the cupboard out of sight.

It is the right fit for apartments and units, for renters who want filtered drinking water without a whole-home installation, and for homeowners who specifically want filtered drinking water at the kitchen tap without filtering the rest of the house.

Available in five finishes: Chrome, Brushed Nickel, Brushed Gold, Gunmetal, and Matt Black. 15-year warranty on tapware. Norton Plumbing fits the undersink filter and tapware together.

Reverse osmosis - for the highest level of purity

Reverse osmosis works differently from carbon filtration. Instead of passing water through a media cartridge that adsorbs contaminants, the Puretec RO270 forces water through an ultra-fine membrane at 0.0005 micron - flushing dissolved impurities to drain rather than trapping them. The result is a much more thorough removal of dissolved solids than carbon filtration alone can achieve.

The RO270 removes up to 98% of dissolved impurities, including fluoride, PFAS, heavy metals, salts, viruses, bacteria, and cysts. It stores filtered water in a 7-litre tank under the sink, ready on demand from a dedicated tap. Capacity is 270 litres per day.

The RO270 is the right choice for families who want the most thoroughly filtered drinking water possible at the kitchen tap, or where there are specific concerns about dissolved contaminants - including fluoride - that carbon filtration does not fully address. It sits undersink alongside the existing plumbing. Warranty: 3 years - one year parts and labour, two years parts.

Shower filter

If the goal is cleaner shower water without a whole-home system, the Puretec SF240-CH is a straightforward solution. It fits between the shower arm and the shower head using a KDF media cartridge that reduces chlorine, sediment, and heavy metals from hot water. No modifications to existing plumbing required.

Families often add a shower filter alongside the Tripla or RO270 at the kitchen tap - filtered drinking water and filtered shower water, without the footprint of a whole-home system. It is also a practical option for renters. Cartridge replacement every 6 to 12 months.

FilterWall size - F3 and F4 or F5 and F6?

If you are leaning toward the whole-home FilterWall, the size choice comes down to your home's water demand. The F5 and F6 are the large 20-inch units, rated at up to 55 litres per minute - for homes with two or more bathrooms where multiple showers, taps, and appliances may run at the same time. Most houses across Coogee, Bondi, Bronte, and Randwick fall into this category.

The F3 and F4 are the compact 10-inch units, rated at up to 30 litres per minute, for smaller homes, terraces, and properties where the compact footprint is a better fit for the available wall space. Norton Plumbing recommends the right model during the free home assessment. We install the full Puretec range.

To see what a FilterWall looks like installed at a real Eastern Suburbs home, read the Clovelly case study - real photos, real wall, and what the homeowner noticed in the first week.

Warranties and maintenance

FilterWall: Puretec backs the FilterWall with a 10-year warranty - one year parts and labour, nine years parts only. Norton Plumbing's workmanship warranty sits on top: if anything we installed is not right, we come back at no charge.

Tripla Elite tapware: 15-year warranty - 2 years parts and labour, 13 years parts. RO270: 3-year warranty - 1 year parts and labour, 2 years parts.

FilterWall cartridges should be replaced every 6 to 12 months depending on household water use. Norton Plumbing books in the first service call at handover and walks you through the schedule. The Stage 1 pleated cartridge on the F5 is washable between changes, which helps maintain flow through the year. All Puretec products carry WaterMark certification to Australian Standards.

How to reach Norton Plumbing

Norton Plumbing has been fitting Puretec water filtration systems across Sydney's Eastern Suburbs since 2019 and is a Puretec Preferred Plumber. Adam Norton is the primary technician and holds NSW plumbing licence 397768C. If you are weighing up which system suits your home, the free home assessment is the right starting point - we check the incoming pressure, look at the available mounting space, and give you a fixed quote on the spot. No obligation. Phone: 0477 858 951. For more on the full range we install, see our water filtration page.