How to Choose an Alkaline Water Filter in Australia: A Practical Guide
September 05, 20232 min read
Choosing an alkaline water filter comes down to three decisions: filter type, filtration quality, and ongoing cost. Here’s a practical guide for Australian households.
Alkaline water filters raise pH through two main methods:
Mineral addition (most common in Australia): Water passes through mineral media stages — Maifan stones, Prill Beads, or similar — that naturally add calcium, magnesium, and potassium, raising pH to 7.5–8.5. This is the method used in our 8-stage KDF benchtop systems.
Electrolytic ionisation: Uses electrolysis to separate water into alkaline and acidic streams. More expensive, requires electricity, and the health evidence for ionised water specifically is not conclusive.
Types of Alkaline Water Filters
Benchtop gravity filter: No plumbing, sits on the kitchen bench, gravity-fed. Our most popular option for Australian households. Suitable for renters and homeowners. Browse our benchtop alkaline water cooler range.
Under-sink filter: Installed under the kitchen sink, delivers filtered water from a dedicated tap. Requires a plumber. See our Under Sink Water Filters Guide.
Reverse osmosis with remineralisation: Removes the most contaminants (including fluoride) then adds minerals back. The highest quality option. See our Reverse Osmosis Guide.
What to Look For
Filtration quality before the alkaline stage: The alkaline stage should come after chlorine, sediment, and bacteria removal — not instead of it. Our 8-stage KDF cartridge handles all of these before the mineral stages.
pH range: 7.5–8.5 is the practical target. Higher pH (9.5+) from ionisers is not necessary and the evidence for additional benefit is not established.
Fluoride removal: Standard alkaline filters do not remove fluoride. For fluoride removal, add an UltraCeram cartridge or choose an RO system.
Cartridge availability and cost: Replace every 6–12 months. Browse our replacement cartridge range and check ongoing costs before buying.
Honest Benefits of Alkaline Water
The well-supported benefits of alkaline water from a mineral-stage filter are: improved taste (smoother, less harsh than chlorinated tap water), added trace minerals (calcium, magnesium, potassium), and mild pH raise. These are genuine and practical.
Claims about alkaline water boosting immunity, aiding detoxification, or supporting weight management are not supported by clinical evidence. Be sceptical of products making these claims.
Frequently Asked Questions
What is the difference between an alkaline filter and an ioniser?
An alkaline filter raises pH through mineral media (Maifan stones, Prill Beads). An ioniser uses electrolysis. Mineral-stage filters are more affordable and practical for most Australian households. The evidence for additional health benefits from ionised water specifically is not conclusive.
Does an alkaline water filter remove fluoride?
Standard alkaline filters do not remove fluoride. For fluoride removal, add an UltraCeram cartridge or choose a reverse osmosis system. See our Reverse Osmosis Guide.
How often do I replace an alkaline water filter cartridge?
