Carbon filtration and reverse osmosis are the two most common filtration technologies in Australian homes, and they serve different purposes. Understanding the difference will help you choose the right system — or combination of systems — for your needs.
Carbon filtration works by adsorption — contaminants bond to the surface of activated carbon as water passes through. It is extremely effective at removing chlorine, chloramines, VOCs, pesticides, and compounds that cause taste and odour issues. Carbon filters are affordable, have high flow rates, and preserve healthy minerals. They are the backbone of our whole-home systems.
Reverse osmosis (RO) works by forcing water through a semi-permeable membrane with pores of 0.0001 microns. This removes dissolved solids, fluoride, heavy metals, nitrates, and even microorganisms that carbon cannot touch. RO is the gold standard for drinking water purity, but it produces slower flow and requires a storage tank.
For most Australian households, the ideal setup is a whole-home carbon system for every-tap water plus an under-sink RO system for drinking and cooking. This gives you the best of both worlds — clean, chlorine-free water for showering and washing, and ultra-pure water for drinking.
