The Water Here Is Safe – So Why Would I Filter It?

Let’s start with the question we hear most – at markets, over fences, and from plenty of people who suspect a water filter company won’t like it:

“Isn’t the tap water here perfectly safe? Why would I pay for a filter?”

It’s a fair question, and it deserves a straight answer – not scare tactics about mystery toxins, and not a sales pitch that dodges the premise. So here’s our honest answer, with the official numbers on the table.

Yes, the water is safe. Let’s be clear about that.

First, a quick point about who supplies what, because it’s often confused. Busselton Water, a state-owned utility, supplies Busselton, Vasse, Wonnerup and surrounds, drawing mainly from the Yarragadee aquifer. Dunsborough and Yallingup are on a separate supply: the Water Corporation’s Dunsborough scheme, which draws groundwater from the Quindalup wellfield about 7 km south-east of town, topped up from Butterworth Springs in summer and treated for iron before it enters the network. Busselton Water does sell bulk water to the Water Corporation to top up the Dunsborough supply at times, which is why locals often assume the two are the same thing.

Both utilities publish an annual water quality report. Busselton Water’s 2023-24 edition, covering its own network, is a genuinely strong report card:

• 100 per cent health compliance across every category: bacteria, chemicals, pesticides, radiological.
• Zero incidents reportable to the Department of Health.
• 613 microbiological samples, zero detections – and no E. coli has ever been found in the network since sampling began in 2010.
• 450 pesticide analyses: nothing. More than 1,500 PFAS analyses: nothing.
• 99.9 per cent compliance even on the non-health “aesthetic” measures.

The Water Corporation’s annual drinking water quality report tells a similar story for the Dunsborough scheme: treated water with iron averaging just 0.006 mg/L, colour below 1 TCU and turbidity below 0.2 NTU in 2024-25.

If anyone tells you Busselton or Dunsborough tap water is dangerous, they’re wrong, and you can show them the reports. We install water filters for a living, and we’ll say it plainly: the water here is safe. A company that needs you to believe otherwise isn’t a company you should buy from.

So why did we build a business on filtering it – and why do so many local families say it’s one of the best things they’ve added to their homes?

Because “safe” answers a different question than the one your household asks

“Safe” is a regulatory standard: will this water harm the population drinking it? The guidelines exist to answer that question, and our supplies pass.

But that’s not actually the question you ask at home. At home the questions are: Why does the shower smell like a swimming pool? Why did the hot water system only last eight years? Why won’t this crust stop coming back on the shower screen? Why does the water taste better at the neighbour’s place with the filter? And “safe” doesn’t answer any of those – because they were never safety questions.

The same official reports that prove the water is safe also document, with admirable honesty, exactly where those household questions come from:

Chlorine sits at the taste threshold – by design. Busselton Water’s network averaged 0.60 mg/L of chlorine in 2023-24, exactly the level where most people taste it, peaking at 0.91 mg/L. The utility openly states it exceeds the taste guideline at times to guarantee disinfection – the right call for a public network. It’s no accident that taste and odour made up 8 of the 14 complaints it received. The Water Corporation chlorinates the Dunsborough supply for the same reason. The chlorine has finished its job by the time it reaches your boundary; there’s simply no benefit to drinking or showering in it.

The water is hard. Busselton Water’s network carries up to about 150 mg/L of dissolved hardness minerals. Dunsborough’s water is a little softer, at 74 to 88 mg/L in 2024-25 (mean 81), but still moderately hard. Both are within guidelines, and both are firmly in the range that scales up hot water systems, appliances and shower screens, year after year. The guideline protects your health; it doesn’t protect your hot water element.

Sediment events happen. Busselton Water’s other six complaints were discoloured water – iron sediment stirred up by mains work and demand swings. Dunsborough’s groundwater is treated for iron before it enters the network, but any network can stir up what has settled in its pipes. Harmless, routine… and already through your washing machine by the time it’s flushed.

And the testing describes last year, not next year. The PFAS results are excellent, and we’ve said so prominently. But an annual report is a rear-view mirror. A filtration barrier at your point of entry works on whatever arrives, without depending on every future year’s results matching the last – which is exactly why we frame PFAS filtration as insurance, not rescue.

The honest framing: finish the job to your standard

Here’s the way we’d put it to a mate. The utilities deliver water that’s safe for tens of thousands of people at a defensible cost. That’s their job, and they do it well. What they can’t do – what no utility can do – is finish the water to the standard one particular household might want: chlorine-free at the shower head, scale-controlled into the hot water system, sediment-proof at the washing machine, polished at the kitchen tap.

That last step was always going to be yours. Some households are happy without it – truly. If the taste doesn’t bother you, your appliances are young, and the trade-offs of a public supply sit fine with you, you don’t need what we sell, and we’ll tell you so.

But if you’ve caught yourself buying bottled water, wincing at the shower smell, or replacing scale-shortened appliances, then a whole-home system like the Vortex Pro 3 – triple-stage filtration, scale control, stainless steel finish, 10-year warranty, installed by a licensed plumber – turns the water you have into the water you actually want, at every tap in the house. (And on tank or bore water, where none of the utilities’ testing applies to you at all, the case stops being about preference and starts being about the Ultra V Pro 3 doing the job no one else is doing.)

The bottom line

Is the water here safe? Yes – and we’ll keep saying so, because it’s true and because you deserve straight answers from anyone asking for your money. Is it exactly the water you’d choose, at every tap, every day? That’s the real question, and it’s yours to answer – ideally with the facts in front of you.

We’re happy to be part of that conversation, whichever way it goes. It’s how we’d want to be treated, and frankly, in a region this size, it’s the only way to do business anyway – word gets around.

Want the facts for your own place? We test water across the South West every week. Call Danny on 0452 259 399 or request a quote – honest advice from a licensed WA plumbing contractor (PL8180). And if a mate put you onto us, ask about our referral program – successful referrals earn free filter cartridges.

Sources: Busselton Water, Annual Water Quality Report 2023-24 (busseltonwater.wa.gov.au); Water Corporation, Annual Drinking Water Quality Report 2024-25 (Dunsborough scheme); Australian Drinking Water Guidelines (NHMRC).

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Dunsborough Water Filtration supplies, installs and maintains whole-home water filtration systems across Dunsborough, Busselton, Yallingup, Margaret River and the South West. Licensed WA Plumbing Contractor PL8180.