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Which water filtration system ?

How to Choose the Right Water Filtration System

I will keep this as simple and straightforward as possible. I hope this guide helps you choose the water filtration system that best suits your needs.

When choosing a water filtration system, there are three essential questions you must ask yourself:

  1. What do you want to filter out from your water?

  2. Where do you want to install the system and what fittings are required?

  3. How much water do you need to filter?

1. What Do You Want to Filter Out?

This is the most important question, as it determines:

  • Which filtration media you need

  • And which system is suitable for you

Below are the most commonly used filtration media in water filtration systems. In the Australian market, most systems only use two of the media listed below.

Activated Carbon

Nearly 90% of water filtration systems on the market use activated carbon.

Carbon removes:

  • Chlorine

  • Chloramine

  • Chemical contaminants

  • Bad odour

  • Bad taste

  • Tree tannins and organic compounds

There are two types of carbon:

  • Granulated Activated Carbon (GAC)

  • Carbon Block (compacted carbon)

They work differently and perform differently.

⚠️ To remove chloramine, you need a special type of carbon (catalytic carbon). Normal carbon removes chlorine but not necessarily chloramine.

Please refer to our Carbon Block FAQ section for more detailed information.

Polypropylene (Sediment Filter)

Almost all sediment filters on the market are made from polypropylene.

They remove:

  • Dirt

  • Sediment

  • Mud

  • Rust particles

I personally prefer to install sediment filters before the carbon filter to prolong carbon life. However, many systems install them after the carbon, which is also perfectly fine.

Resin (Water Softening Media)

There are many types of resin available. In general:

  • Granulated or beaded resin is used to reduce hardness

  • It removes calcium, magnesium, and other minerals that cause scale

  • Many sellers also refer to this as a water softener

Reverse Osmosis (RO) Membrane

Reverse osmosis takes a long explanation, and honestly, Google explains it very well.

In simple terms:

  • It is the main performer in high-end water filtration

  • It produces the cleanest possible drinking water

  • Many bottled water factories use RO technology

It is widely considered the best water purification system available.

⚠️ The only downside of RO is that it is slow, which is why most RO systems include a storage tank.

Tankless (straight-flow) RO systems are also available today.

Alkaliser

An alkaliser is a very simple media:

  • It adds minerals back into the water

  • It slightly raises pH

This is commonly used because some people believe that RO water has low pH.

There are many alkalising media available.
The alkaliser we use is calcite (natural stone).

2. Where Do You Want to Install the System?

This question is very straightforward.

Most water filtration systems (including ours) are designed to be installed:

  • Under the kitchen sink

  • With a separate dedicated drinking water tap

Our complete systems come with:

  • WaterMark-approved inlet valve

  • Connects directly to your ½” BSP kitchen water supply

If you plan to install the system elsewhere, you must ensure that:

  • You have the correct fittings

  • The water pressure and space are suitable

3. How Much Water Do You Need to Filter?

Every filtration media has a capacity limit.

  • Smaller filters = smaller capacity

  • Bigger filters = higher flow & longer lifespan (bigger capacity)

For example:

  • If you only filter drinking water, a small under-sink system is sufficient

  • If you want to filter your entire house (including showers and laundry), you will need:

  • A large carbon block

    • A large housing

    • Bigger inlet and outlet fittings

I understand this question may seem obvious to some customers, but from experience, many people accidentally purchase a system that is not suitable for their intended use.

Final Summary

When choosing a water filtration system, always make sure you:

Know what you want to filter out
Choose the correct installation location and most importantly the fittings
Understand the capacity of the system

If these three points are correct, you will always choose the right filtration system for your needs.