About Us

Licensed Plumbers Who Chose to Specialise in Water

Water filtration is the whole of what we do, not a sideline to general plumbing. That focus is the reason we can size a system from your actual water rather than sell you the one in the van.

  • NSW Government Service NSW licensed contractor and qualified supervisor number 358626C
  • Master Plumbers Association NSW member
  • AGA listed gas fitter
  • NSW Government accredited
  • NSW Police Force National Police Check verified
  • Trustpilot 4.5 star rating
  • ProvenExpert 4.8 star rating
  • $20M Public Liability
  • Police Checked & ID Verified
  • WaterMark-Certified Components
  • Lifetime Labour Warranty
Our Mission

Clean Water at Every Tap, and the Truth About What It Costs to Run

We size a filtration system from your actual water and your actual plumbing. We quote one fixed installed price rather than an hourly rate. We show you the ongoing cartridge cost beside that price, so you can judge the real cost of ownership before you commit.

A cheap system with expensive proprietary cartridges is not cheap across five years, and you cannot see that from an installed price alone. Showing you both numbers is the whole point.

  • Assessment before equipment, every time
  • One fixed installed price for the quoted scope
  • Cartridge costs disclosed at quote stage
  • Variations priced and approved before work starts
Filtered drinking water poured at a kitchen tap in a Sydney home
Our Position

What We Do, and What We Deliberately Do Not

Knowing where a business stops is as useful to a customer as knowing where it starts.

What we do

We install and service water filtration across Sydney and New South Wales, residential and commercial, including systems we did not install ourselves.

  • Whole-house and under-sink filtration
  • Under-sink reverse osmosis systems
  • Rainwater tank filtration with UV sterilisation
  • Bore water treatment and iron removal
  • Water softeners and hard water treatment
  • Commercial and hospitality filtration
  • Cartridge replacement and servicing, any brand

What we do not do

We are not a retailer. There is no cart on this website, no online store, and no payment taken here.

A plumber who fits filtration occasionally will not know which cartridge suits Sydney town water in your suburb. A retailer who ships you a box cannot legally connect it to your mains. We sit deliberately in neither camp.

We also do not employ salespeople. Whoever quotes your job is a licensed plumber, so nobody stands to gain from selling you a larger system than your water needs.

Whole-house water filtration system installed in copper plumbing at a Sydney property
Experience

Water in Sydney Is Not One Problem

A home on treated town supply in the Inner West has a chlorine taste problem. A property on tank water in the Blue Mountains has a sediment and disinfection problem. A house in a hard water pocket is quietly losing its hot water system to scale.

Those are three different jobs. Specifying the same unit for all three is how people end up disappointed with filtration in general, and it is the single most common thing we are called in to correct.

What the work teaches is that the assessment matters more than the equipment. We check incoming pressure, estimate peak flow for the property, look at what the existing pipework is made of, and find out what is actually bothering you about the water before recommending anything.

Core Values

Six Commitments, Each With the Practice That Proves It

Values are worth nothing without the thing you actually do. Each one below is paired with its proof.

Honesty about what you need

Proof: we will tell you when reverse osmosis is overkill, when your problem is a cartridge rather than a new system, and when a 2am call can safely wait until morning at the normal rate.

Price certainty

Proof: one fixed installed price for the quoted scope, cartridge costs shown beside it, and variations priced and approved before the work happens rather than discovered on the invoice.

Doing it to standard

Proof: WaterMark-certified components throughout, installation to AS/NZS 3500, and a Certificate of Compliance issued where the work requires one.

Standing behind the work

Proof: a lifetime warranty on our installation labour and a 3-year manufacturer warranty on the equipment we supply, with the manufacturer claim handled by us rather than by you.

Being reachable

Proof: a licensed plumber answers 24 hours a day for genuine emergencies, and the after-hours callout rate is quoted before we get in the vehicle.

Owning our mistakes

Proof: a published complaints process, acknowledgement within one business day, an outcome inside twenty, and the escalation path to NSW Fair Trading printed alongside it.

Leadership

Alexander Cossetto, Contractor Licensee

Alexander Cossetto holds the NSW Contractor Licence and Qualified Supervisor Certificate for Water Filtration Sydney, number 358626C. Every job we carry out is done by him or under his supervision.

The licence covers Plumbing, Draining, Gasfitting, LP Gasfitting and Refrigeration, which is why we can handle a filtration job that touches gas hot water without subcontracting the part that matters.

You do not have to take that on trust. It is a public record.

Who attends your property

Licensed plumbers, apprentices working alongside them, and service technicians handling cartridge changes and servicing. Everyone who enters a home is police checked and ID verified, which matters more than it usually gets credit for when a customer is home alone with a tradesperson in the kitchen.

NSW Government licensed contractor and qualified supervisor credential, licence number 358626C
Service Area

Where We Install and Service

Sydney Metro and Greater Sydney for everything, including 24-hour emergency callouts. Regional New South Wales for planned work and scheduled service runs.

  • Inner West
  • Eastern Suburbs
  • North Shore
  • Northern Beaches
  • Hills District
  • Western Sydney
  • St George
  • Sutherland Shire
  • Macarthur
  • Wollondilly
  • Blue Mountains
  • Central Coast
  • Newcastle & Hunter
  • Port Stephens
  • Mid North Coast
  • Illawarra & Wollongong
  • Southern Highlands
  • South Coast & Shoalhaven
  • Central West
  • Riverina

Regional properties often run on rainwater tanks or bore water rather than town supply, which calls for a different treatment train and usually a water test first. Any travel component appears on your quote before you accept it, never afterwards. See the full service area.

Credentials

Every Claim on This Page Is Checkable

We would rather you verified than took our word for it.

NSW Licence
No. 358626C
Contractor licensee
Alexander Cossetto
Public liability
$20M
ABN
98 700 073 016
ACN
700 073 016
Registered address
Sussex St, Sydney NSW 2000
Google rating
5.0
ProvenExpert
4.8
Trustpilot
4.5

Full pricing ranges and the complete compliance picture sit on our licensing and transparency page.

Talk to the Plumber Who Would Do the Work

Free quote, no call-out fee, no obligation. You get the system recommendation, the fixed installed price and the ongoing cartridge cost, so you can compare properly.

Bookings 7am to 5pm Monday to Saturday. A licensed plumber answers 24 hours for genuine emergencies.

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