Good questions make better water decisions.

Do I need whole-home filtration?

Will it affect my water pressure?

Can I install it in an apartment?

How often do filters need changing?

Do I need RO as well?

What is the difference between scale management and a real water softener?

These are the questions worth answering before the system goes into the home.

Use the categories below for the short answer.

If you want the science behind it, we will link you there too.

Find Your Question

Ask WAA

CHOOSING THE RIGHT SYSTEM

Do I actually need a whole-home filtration system?

Not necessarily.

Whole-house filtration treats water at the entry point for drinking, cooking, showers and everyday use throughout your home. It can suit households that want filtration across the property.

That might include:

• Sediment
• Residual chlorine or chloramine
• Scale-management objectives
• Shower and bathroom water
• Water reaching fixtures and appliances
• A broader whole-home water experience

If you want benchtop features such as hot, chilled, sparkling, hydrogen-rich water or bullet ice, compare the features of each model. Under-sink RO may suit a specific filtration preference. Neither option requires a whole-house bundle.

Related: Whole-house and Point-of-use Options

What is the difference between whole-house filtration and point-of-use systems?

A whole-house system filters water at the entry point for use throughout your home, including drinking and cooking. It is sized to support household flow across multiple outlets.

Point-of-use systems sit at a particular outlet or on the bench. Benchtop models add everyday features such as temperature options, sparkling water, hydrogen-rich water or bullet ice; under-sink RO serves a specific filtration preference. Features vary by model.

Do I need both whole-house filtration and reverse osmosis?

Not every household needs both. Whole-house filtration already includes water used for drinking and cooking.

Under-sink RO can add a separate treatment stage at the kitchen where a specific treatment goal calls for it. Choose the combination using evidence for the selected products and source water.

If you prefer benchtop lifestyle features, these can also be included in a tailored whole-house bundle.

Explore Complete Home Solutions

What if I do not know which system I need?

That is exactly what the Solutions page is for.

Tell us:

• What you want to change
• What you have noticed
• Where you live
• What type of property you have
• Whether you want whole-house filtration, benchtop features, under-sink RO or a combination

You do not need to choose the technology first.

Find My Water Solution

Should I choose a system based on the number of filtration stages?

No.

A system with ten stages is not automatically more advanced than one with four.

The useful question is:

What is every stage actually there to do?

A well-designed system gives each stage a specific treatment role.

Related: Filtration Guide

HOMES, APARTMENTS & INSTALLATION

Can a whole-home system be installed in an apartment?

Sometimes — but apartments need to be assessed more carefully.

The answer depends on things such as:

• Access to the incoming water line
• Whether the apartment has an individually controlled supply
• Available space
• Strata / owners-corporation requirements
• Service access
• Plumbing configuration

For many apartment customers, an under-sink or benchtop drinking-water system may be more practical.

But every building is different.

Can a whole-home system be installed in a townhouse?

Often, yes.

The key questions are similar to a house:

Where does the water enter the property?

Is there sufficient installation and service space?

Is the incoming supply individually controlled?

Are there strata or body-corporate restrictions?

A photo of the meter and proposed installation area can usually make the first conversation much easier.

Where is a whole-home filtration system normally installed?

Usually near an accessible point on the incoming water line before water is distributed through the property.

The exact location depends on the property and plumbing layout.

A good installation also needs to consider:

• Weather exposure
• Plumbing access
• Future filter replacement
• Drainage where relevant
• Flow direction
• Service clearance

The best-looking location is not always the best service location.

How much space do I need?

That depends on the exact system.

When checking dimensions, allow for more than the product body itself.

Plumbing connections and future cartridge removal require service space too.

WAA can review photos or measurements before you move forward.

How long does installation take?

It depends on the property.

A straightforward installation and a complex plumbing modification are very different jobs.

Factors include:

• Location of the incoming line
• Pipework
• Accessibility
• Space
• Existing plumbing
• System configuration

The installer should confirm the expected scope once the property has been reviewed.

Does WAA install the system?

WAA focuses on the product, recommendation and ongoing customer support.

Plumbing installation should be completed by an appropriately licensed plumber where required.

Customers may use an approved / recommended installer where available or arrange their own licensed plumber, depending on the product and location.

Will whole-home filtration reduce my water pressure?

Every filter creates some resistance to flow.

The useful question is whether that pressure drop is meaningful in normal household use.

That depends on:

• Filter design
• Cartridge condition
• Pipework
• Incoming pressure
• Household flow demand
• Number of outlets operating at once

This is why whole-home filtration needs to be sized around flow, not simply the contaminant list.

FILTER LIFE & REPLACEMENT

How often do WAA filters need replacing?

It depends on the filter.

For many of WAA's main whole-home treatment cartridges, around 12 months is a practical average planning interval, but actual service life depends on household water use and incoming water conditions.

Some homes may require replacement earlier.

Others may achieve longer service life.

Sediment stages may also require more frequent attention because they are designed to capture the material arriving first.

The replacement guidance for your exact system should always take priority over a generic number.

Why can't every customer simply change filters every 12 months?

Because filter life is affected by two major variables:

how much water passes through the system

and

what is in that incoming water.

Two households in the same suburb may use very different amounts of water.

Two properties can also place very different loads on a cartridge.

So “12 months” is better understood as a typical service guideline than a guarantee that every cartridge reaches the same endpoint on the same day.

How do I know when my filter needs changing?

Use the recommended replacement schedule for your system as the main guide.

Other signs can include:

• Reduced flow
• Noticeable change in taste or odour
• Visible filter loading
• System alerts where applicable

But waiting until something becomes obvious is not always the best maintenance strategy.

Adsorption media can lose useful capacity before the filter looks physically “dirty”.

What happens if I leave a filter in for too long?

Different filter types age differently.

A sediment filter can become increasingly restricted.

Activated carbon can progressively use its adsorption capacity.

Ion-exchange resin can exhaust.

Membranes can foul or lose performance.

That is why filter replacement is part of the treatment design rather than simply an optional accessory sale.

Can I change the filters myself?

That depends on the WAA system.

Some cartridges are specifically designed for easier customer replacement.

Other systems or installation arrangements may benefit from professional servicing.

Follow the instructions for your exact model.

If you are unsure, contact WAA Support before opening the system.

How much do replacement filters cost?

The cost depends on the system and cartridge set.

Ask us for the replacement-filter price and expected schedule for your model before you buy.

Ask About Replacement Filters

DRINKING WATER & REVERSE OSMOSIS

Does reverse osmosis remove minerals?

RO can reduce many dissolved ions, including naturally occurring mineral ions.

The amount reduced depends on the membrane, feed water and operating conditions.

Some WAA drinking-water products may include a remineralisation stage to adjust the final water profile after RO.

Is removing minerals from drinking water bad?

That question is often oversimplified.

RO is a treatment process, not a nutrition plan.

The more useful questions are:

• What is the treatment objective?
• What does the final water contain?
• Does the product include remineralisation?
• Is the system maintained correctly?
• Does the final taste and water profile suit the household?

Avoid judging water quality only from a TDS number.

Why does an RO system produce reject water?

RO separates water into two streams.

One passes through the membrane as treated product water.

The other carries rejected dissolved material away from the membrane.

That second stream is part of how the separation process works.

Different RO systems can have different recovery efficiencies.

Related: RO Recovery Ratio Explained

Is lower TDS always better?

No.

TDS is a measure of total dissolved solids.

It does not tell you which dissolved substances are present.

Water containing ordinary calcium and magnesium can have a higher TDS than RO water without being “dirty”.

A TDS meter also cannot identify PFAS, lead or many other specific substances.

Lower TDS ≠ automatically safer water.

SCALE & WATER SOFTENING

Is scale management the same thing as water softening?

No.

This is one of the most important distinctions in household water treatment.

A true conventional water softener uses ion-exchange resin to remove hardness ions such as calcium and magnesium.

A scale-management system may instead change how those minerals behave or deposit while leaving much of the calcium and magnesium in the water.

Less visible scale does not automatically mean the water has been softened.

What is a real water softener?

A conventional household softener uses cation-exchange resin.

Calcium and magnesium ions in the water exchange with ions held by the resin.

Once the resin reaches its working capacity, it needs regeneration.

That regeneration commonly uses a salt brine.

So if a product is marketed as a “softener” but uses no ion-exchange resin and never regenerates, it is worth asking:

What exactly is happening to the calcium and magnesium?

How often does a water softener regenerate?

There is no responsible universal answer.

It depends on:

• Resin volume
• Resin working capacity
• Incoming water hardness
• Household water use
• Salt dose
• Regeneration settings
• System efficiency

That is why softeners should be sized around actual water conditions rather than sold with one generic regeneration interval.

Do I need a water softener?

Not simply because you see scale.

First decide what you actually want.

If the objective is:

reduce scale deposition

a scale-management approach may be enough.

If the objective is:

remove hardness ions and genuinely soften the water

then conventional ion exchange is the treatment method to consider.

Scale Management vs Water Softening

CHLORINE, CHLORAMINE, FLUORIDE & PFAS

Can activated carbon reduce chlorine?

Yes — activated carbon is commonly used in dechlorination and adsorption treatment.

But actual performance still depends on:

• Carbon type
• Cartridge design
• Flow
• Contact time
• Capacity
• Water conditions

“Contains activated carbon” is not, by itself, a performance specification.

What is the difference between chlorine and chloramine?

Both can be used as drinking-water disinfectants.

Chloramine is more persistent and can require a more specialised carbon treatment approach.

Conventional activated carbon may reduce chloramine.

Catalytic activated carbon is specifically used where stronger chloramine-treatment performance is required.

Chlorine vs Chloramine

Can filtration reduce fluoride?

Appropriate reverse-osmosis systems can reduce fluoride in drinking water.

Conventional whole-home activated carbon should not be treated as equivalent to RO for that purpose.

If fluoride reduction is the goal, the treatment mechanism matters.

Can filtration reduce PFAS?

Certain filtration technologies can reduce certain PFAS compounds.

But PFAS is a family of many substances, not one chemical.

A useful claim should tell you:

• Which PFAS compound was tested
• Which product was tested
• Under what conditions
• Over what treatment volume

WAA's PFAS performance language should only extend to the compounds and product configurations actually verified.

If a filter says “99% removal”, does that mean it always removes 99%?

No.

A percentage should be read together with:

• Target substance
• Starting concentration
• Flow
• Test method
• Water volume
• Filter age
• Capacity
• Product tested

Day-one laboratory performance and full filter-life capacity are different questions.

How to Read a Removal Claim

WATER TESTING

Do I need to test my water before buying a filtration system?

Not every customer does.

Testing becomes more important when:

• You use bore, tank or another private water source
• A specific contaminant is the concern
• Something has changed unexpectedly
• The decision depends on concentration
• You need to verify treatment performance

If your goal is simply better drinking-water taste or a general whole-home treatment preference, you may not need a laboratory test before starting the conversation.

Can WAA recommend a system from my postcode?

A postcode helps.

It tells us which local public-water context may be relevant.

But it cannot tell us everything.

A useful recommendation may also need:

• Property type
• Installation space
• Household size
• Flow requirement
• Plumbing context
• What you actually want to improve

Local water context + property context + customer objective gives a much better answer than postcode alone.

Can a TDS meter tell me if my water is safe?

No.

TDS measures the overall level of dissolved material.

It does not identify the individual substances making up that reading.

It cannot tell you whether PFAS, lead or another specific contaminant is present.

A TDS number can be useful.

It should not be treated as a complete water-quality diagnosis.

AUSTRALIAN TAP WATER

Is Australian tap water safe to drink?

Australia's public drinking-water system is managed through state and territory regulatory frameworks, using the Australian Drinking Water Guidelines as an authoritative national reference for safe, good-quality drinking water and risk management.

That does not mean every property, private water source or plumbing situation is identical.

And a filtration company should not turn “there can be water-quality issues” into “everyone's tap water is unsafe”.

If there is a specific concern, investigate that concern properly.

If Australian tap water is regulated, why would I filter it?

Because public-water treatment and household filtration have different jobs.

A public system has to deliver water safely and reliably across a community.

A household may choose additional treatment because of:

• Taste
• Odour
• Residual disinfectant
• Sediment
• Scale behaviour
• A verified specific substance
• Drinking-water preference
• Appliance / fixture considerations
• Convenience

Filtering your water does not require the belief that the public-water system has failed.

Sometimes it simply means:

you want more control over what happens after the water reaches your home.

APARTMENTS, RENTERS & BENCHTOP SYSTEMS

I rent. What options do I have?

If permanent plumbing changes are not practical, a benchtop system may be the easiest place to start.

Under-sink installation may also be possible depending on the property and landlord approval.

Whole-home filtration is usually more property-dependent.

I live in an apartment. Is a benchtop system enough?

That depends on your goal.

If you mainly care about drinking water and convenience, it may be.

If the concern applies to showers or water throughout the apartment, the property plumbing becomes much more important.

There is no reason to install a larger system if it does not solve a problem you actually have.

WAA VS OTHER WATER FILTRATION COMPANIES

What makes WAA different?

We do not think the strongest difference is one cartridge or one marketing claim.

It is the way the whole business is being built.

### Product development

WAA invests in filtration R&D, material development and testing rather than treating every filter as an off-the-shelf commodity.

### Research relationships

University collaborations and independent laboratory work form part of the product-development and evidence pathway.

### Local presence

Customers can visit WAA showrooms in key Australian markets, see products, taste water and speak with a local team.

### Different technologies for different jobs

Whole-home carbon, RO, scale-management media, ion exchange, catalytic carbon and other treatment methods should not be presented as interchangeable.

### Ongoing ownership

Replacement filters, service, product support and future development are part of the system relationship.

### Consultation before upselling

If a smaller solution is more appropriate, the recommendation should be smaller.

If the customer needs more evidence before buying, that should be the next step.

We would rather explain the difference than make every customer fit the same sales script.

SHOWROOMS

Can I see a WAA system before I buy?

Yes.

WAA has showroom locations in key Australian markets where customers can see products in person, compare options and speak with the local team.

Find a Showroom

What can I do during a showroom visit?

You can:

• See the systems at full size
• Compare product options
• See tap colours and finishes
• Taste drinking water
• Ask how filtration stages work
• Discuss your property
• Bring photos
• Ask about maintenance
• Ask what you may not need

Do I have to buy during the showroom visit?

No.

That is not the point.

You can buy on the day.

You can go home and think about it.

You can compare options.

Or you can simply leave with a clearer understanding of what would suit the home.

The showroom should help you decide.

Not rush you into deciding.

SERVICE & SUPPORT

What happens after I buy?

A filtration system has an ownership life.

That includes:

• Filter replacement
• Product support
• Maintenance guidance
• System information
• Replacement ordering
• Service questions

WAA is building the customer relationship around that longer ownership journey rather than treating installation as the end of the transaction.

Who do I contact if I already own a WAA system?

Use WAA Customer Support for existing-system questions, filter replacement and service assistance.

Contact Support

Can WAA remind me when filters are due?

WAA's digital ownership tools are designed to make filter management, reminders and replacement ordering easier.

The exact available functions depend on the system and current platform capability.

WARRANTY

What warranty comes with a WAA system?

Warranty coverage depends on the specific product.

Check the current warranty terms for the model you are considering before purchase.

We recommend customers look at more than the headline warranty period.

Also ask:

• What is actually covered?
• What maintenance is required?
• Are consumables excluded?
• What happens if support is needed?
• Is the replacement-filter pathway still available?

A warranty is only useful when the company behind it is still accessible.

MOVING HOUSE

What happens if I move?

It depends on the system.

Benchtop systems are naturally easier to relocate.

Under-sink and whole-home systems involve plumbing and should be assessed before removal or reinstallation.

Contact WAA before moving an installed system so we can help identify the most sensible pathway.

BUYING ONLINE VS TALKING TO SOMEONE

Can I just buy online?

For products designed for direct online purchase, yes.

But not every water decision benefits from skipping the conversation.

Whole-home systems, complex installations and specific water concerns usually benefit from a little context first.

The point of consultation is not to make the process harder.

It is to prevent the wrong product being the easiest product to buy.

QUICK ANSWERS

Do I need whole-home filtration?

Only if the goal applies to water throughout the home.

Do I need RO?

Only if your drinking-water objective calls for what RO does.

Is more stages better?

Not automatically.

Does carbon remove everything?

No.

Does RO remove everything?

No.

Is scale the same as contamination?

No.

Is scale management the same as softening?

No.

Does UV filter particles?

No.

Can I install in an apartment?

Possibly — property access matters.

Do filters last exactly 12 months?

No. It is a guideline, not a universal endpoint.

Do I need a water test?

Sometimes.

Can I visit WAA before buying?

Yes.

Do I have to buy at the showroom?

No.

CAN'T FIND THE ANSWER?

Ask the question in your own words.

You do not need to know the terminology.

Tell us:

what you noticed,

what you are trying to improve,

and what type of home you live in.

We'll help work out which question comes next.

Ask WAA

Find My Water Solution

Visit a Showroom

FINAL LINE

A good water system should become clearer the more questions you ask.

Not harder to explain.