I regularly get asked for information on the benefits of 5 - 6 - 7 stage reverse osmosis systems. The facts are 3 or 4 stage units will adequately provide high purity drinking water in most Australian city areas. The more stages you incorporate, the more costly your yearly cartridge replacement cost.

One measurement of water purity is the total dissolved solids count or (TDS) ... Melbourne water is around 60 parts per million (ppm) Sydney - 70ppm, Brisbane 200ppm, Adelaide - 350ppm, Perth - 400ppm

Your reverse osmosis water filter will normally reduce your water's TDS to 5 - 6 ppm, these being beneficial trace elements considered optimum for the body. 100% purity is not recommended except for industrial requirements, or aquariums, as this water can be very aggressive and leach minerals from whatever it comes in contact with, including your teeth fillings. Reverse Osmosis will also deliver water with a pH level of around 6.5, neutral being 7.

For those consumers wishing to reduce their TDS to ZERO i.e. aquariums etc.,
or mineralise and energise their water, we offer a 5 STAGE PORTABLE OR UNDERSINK REVERSE OSMOSIS WATER FILTER, utilising an inline filter, positioned after the membrane when water flow is minimal for prolonged contact time to achieve the desired result.