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Water Filtration System Installation in NSW

The Australian Government takes water seriously. Australia is a first-class country offering good, clean and safe water to our people.

All states in Australia go to great lengths to ensure that quality drinking water is available for everyone.

Drinking water in NSW

All drinking water in NSW is processed following strict Australian Drinking Water Guidelines (ADWG). WaterNSW employs cutting edge technology and systems to deliver the best quality water to our communities to filter.

Filtration Standards

There are a number of water treatment processes for private water supply. These include filtration (pretreatment filtration and treatment filtration), chlorine disinfection, and UV disinfection. Professional advice should be sought to identify the best water treatment process.

A treatment that has undergone certification should have data under any of the following standards:

AS/NZS 3497:1998 (Plumbing Requirements), AS/NZS 4348:1995 (Performance Requirements – details how to test), NSF/ANSI and EN standards.

Be mindful of treatment devices that may have standards that do not specifically refer to performance or contaminant removal/reduction.

For more information, refer to NSW Health’s website: http://www.health.nsw.gov.au/environment/water/Pages/private-supplies.aspx

What is Filtration?

Filtration is the process of passing water through a suitably graded filter to remove contaminants. Pretreatment filtration removes coarse material from the water and can improve treatment steps later.

Coagulation treatment is required for sites where suspended particles (dirty water) is present. In coagulation, chemicals introduced into the water break down particles and force them to clump together for easier removal.

Regular checks and maintenance of filters should be carried out to prevent bacteria from contaminating the water. Please follow the manufacturer’s instructions closely when installing filters on your property, business or home.

Types of Filtration

There are a number of filtration options available. The choice of filter used depends on the type of contaminants to be filtered. Refer to a professional for the best advice on the type of filter to use.

1. Ceramic filters

Made of ceramic, ceramic filters have smaller-sized pores that can trap smaller contaminants as water is passed through the filter. Ceramic filters can remove some bacteria and parasites but not viruses.

To keep the filter at optimum performance, the core must be cleaned (and replaced if necessary) regularly.

2. Activated carbon filters

The carbon in activated carbon filters eliminates odours and controls taste. Activated carbon filters do not remove bacteria, parasites or viruses.

Carbon filters can be easily saturated and must be replaced regularly.

3. Resin based ion exchange filters

Resin based ion exchange filters are used to soften hard water. They cannot remove microorganisms. The resin in the filter is easily exhausted or can become clogged.

Regular replacements or regeneration can revive poor performing resins.

4. Reverse osmosis filtration

Reverse osmosis filtration can remove contaminants including sediments, microorganisms, and sediments.


Filters that are installed for health purposes must meet the appropriate standards. For example, Australian Standard: AS/NZS 4348:1995. Domestic type water treatment appliances must comply with performance requirements or American National Standards Institute: ANSI/NSF53 Drinking Water Treatment Units – Health.