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If you are renting out a residential property with domestic water filters, on either a short term or long term basis, it is best to ensure that the tenancy agreement or lease clarifies which party (the agent or the tenant) is responsible for maintaining the water filter and periodic replacement of any filter cartridge during the tenancy.

For discoloured water with fine particles of grit and other foreign material, a polypropylene or ceramic filter will effectively remove the sediment. It will not remove bacteria.

Reverse osmosis filters and distillers are the most sophisticated systems. They are capable of removing bacteria and most residual chemicals, including minerals from a water source.

Routine sampling and reporting to the Department of Health ensures that drinking water provided to consumers from drinking water suppliers in Western Australia is of the highest microbiological and chemical quality.

As some water filters remove biocides (substances that can control the growth of harmful organisms, such as chlorine), it is possible that bacteria will re-grow unless the filtered water is stored in a sterile container in a cool, dark place.

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In most circumstances domestic household water filters or ultra violet treatment systems will not make water safe in relation to amoeba unless you also disinfect with chlorine. Read more about amoebic meningitis.

Careful consideration should therefore be given to the quantity of water required, and the time it takes to filter, before you buy a water filter.

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It is not necessary to filter water from scheme drinking water supplies in Western Australia unless you live in an area where you may need to soften hard water.

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Activated carbon filters are most effective in removing chemicals such as iron, manganese, chlorine and hydrogen sulphide along with objectionable tastes and odours.

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Water filters are usually recommended if you have a private water supply on your property that has a high amount of sediment or is at risk of chemical contamination.

This publication is provided for education and information purposes only. It is not a substitute for professional medical care. Information about a therapy, service, product or treatment does not imply endorsement and is not intended to replace advice from your healthcare professional. Readers should note that over time currency and completeness of the information may change. All users should seek advice from a qualified healthcare professional for a diagnosis and answers to their medical questions.

However, as these filters become clogged it is necessary to dispose of the filter or cartridge and replace it with a new one. Some filters may also soften hard water.

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Polypropylene and ceramic filters function by removing particles from the water. Fibres are packed tightly together to form a fine mesh screen that physically traps and removes foreign particles from the water.

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In most circumstances domestic household water filters or ultra violet treatment systems will not make water safe in relation to amoeba unless you also disinfect with chlorine. Read more about amoebic meningitis.

If you are considering drinking mainly from distilled water or similar demineralised sources, please discuss this with your family doctor to ascertain if this is the right option for you. In general, avoid using distilled water or demineralised water when reconstituting infant formula.

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Generally, the speed of the water flow will depend on the size of the gaps in the filter barrier or membrane. A fine filter with the smallest gaps will mean a slower water flow. A clogged filter will also slow the water flow.

The Department of Health requires scheme drinking water suppliers in Western Australia to supply drinking water that is safe and complies with the Australian Drinking Water Guidelines (external site).

However, reverse osmosis and distillers are not effective in removing hydrogen sulphide (a gas with an unpleasant ‘rotten eggs’ smell) in acidic waters.

Some water filters are simple two-tiered jugs while others connect directly to the kitchen tap and are located either on or under the bench.

To remove naturally occurring or disinfection tastes and odours from water an activated carbon filter is more appropriate. It will not remove bacteria.

Water filters work as a physical barrier that can block or trap debris (for example sand) and sometimes bacteria from passing through.

Some water filters may also allow bacteria to multiply to great levels on the filter pads if they are not maintained regularly.