Dolphin whole-house filtration unit installed outdoors with the stainless enclosure open, showing three filter housings

Whole-house water filtration

Cleaner water, from every tap in the house.

A three-stage, WaterMark-certified filtration system plumbed into your mains and housed in a locked stainless enclosure. Installed by licensed plumbers across the Perth metropolitan area.

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The Dolphin system

One unit. The whole house.

Filtration happens once, at the point your mains water enters the property — so showers, laundry, kitchen and garden all draw from the same filtered supply. No jugs to refill, no cartridges under the sink, nothing on the benchtop.

Three 20″ × 4.5″ cartridges in series
Pressure gauge above every stage
Isolation valve — service without shutting off the house
Copper pipework, installed by licensed plumbers

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Inside the Dolphin enclosure: three blue filter housings labelled PP, CTO and AL, joined by copper pipework

Filtration stages

Three cartridges, each with a job.

Water passes through the stages in order — coarse physical filtration first, then chemical, then adsorption. Every cartridge carries the WaterMark certification mark.

Water flows left to right — each stage protects the one behind it.

Stage 1 · Polypropylene

Sediment filter

General clarifying of sediment such as sand, grit and rust. The coarse first pass that protects the two cartridges behind it.

Media: Polypropylene
Max pressure: 100 psi
Max temperature: 38°C

CTO

Stage 2 · Coconut shell carbon

Carbon block

Chlorine, taste and odour removal, with no release of carbon fines. This is the stage you notice at the kitchen tap.

Media: Coconut shell carbon
Max pressure: 100 psi
Max temperature: 38°C

Stage 3 · Activated alumina

Activated alumina

Reduces lead, arsenic and fluoride, without adding any harmful chemicals or substances to the water.

Media: Activated alumina
Max pressure: 100 psi
Max temperature: 38°C

Why filter at the mains

Treating one tap treats one tap.

Cutaway illustration of a house showing filtered water entering at the meter and branching to the kitchen, bathroom, laundry and garden

Illustration only — filtered water enters at the meter and feeds every outlet in the house.

Chlorine, taste and odour

Chlorine is added at the treatment plant as a disinfectant and is still present at your tap. It is the flat taste in a glass of water and the smell that comes off a hot shower.

Sediment, sand and rust

Fine grit and iron oxide travel through the mains and through older internal pipework. They scour tapware, block aerators and shorten the life of anything with a cartridge or solenoid.

Every outlet, continuously

Showers, laundry, kitchen, garden and the hot water unit. A benchtop filter treats a litre at a time; a mains system treats everything downstream of the meter.

Clear water pouring from a kitchen mixer tap into a glass — At the kitchen tap

Clean water from a rainfall shower head in a bright bathroom — In the shower

The enclosure

Built to live outside.

The filtration gear is straightforward. Keeping it serviceable after five Perth summers is the part that matters — so the whole assembly sits in a fully encased stainless cabinet with the Dolphin mark engraved into the lid.

Lock and key set — the cabinet closes and locks, keeping UV, weather and curious hands off the housings.
Durable hinges — full length, rated for a lid opened once a year for the life of the system.
Specialised loop key tool supplied — the only tool that should ever go near a filter housing.
Engraved stainless lid — laser-marked, not a sticker.

Close-up of the Dolphin mark laser-engraved into the brushed stainless enclosure lid, with a pressure gauge alongside

Warranty & service

Backed after we leave.

Dolphin Home Filtration Systems Pty Ltd warrants the system from the date of installation. Cartridges are a consumable — replace them at the recommended interval and the cover stays intact.

3Year warranty

On filter casings and plumbing parts, from the date of installation.

1Year warranty

On labour and workmanship, from the date of installation.

12Month service interval

Recommended cartridge replacement — or sooner if you notice a change in your water quality.

Warranty does not cover damage or faults resulting from misuse, accidental damage, freezing, flooding, fire, excessive water pressure, unauthorised modifications, neglect, or failure to maintain or replace filter cartridges in accordance with the manufacturer's recommendations.

Installations

Installed across Perth.

Side of the house, against the fence, beside the hot water unit — plumbed into the mains and left tidy.

Dolphin filtration unit installed beside a house with the enclosure open — Side return · open for service

Dolphin enclosure installed alongside a hot water system against a limestone wall — Alongside the hot water unit

Dolphin enclosure against a rendered wall with replacement cartridges beside it — Annual service visit

Dolphin enclosure installed against a colorbond fence — Boundary install

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Let's look at your place.

We'll check where your mains comes in, test your pressure and confirm there's space for the enclosure, then quote the installation properly. No obligation.

Phone[ PHONE — TBC ]
Email[ EMAIL — TBC ]
Service areaPerth metropolitan
Plumbing licence[ LICENCE No. — TBC ]

System and cartridges carry the WaterMark certification mark.

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