If your filtered water starts tasting or smelling like tap water again, the activated carbon stage is exhausted. This is the most reliable indicator that your cartridge needs replacing.
2. Reduced Water Flow
A noticeably slower flow from the tap means the sediment or ceramic stages are clogged. Don’t ignore this — a heavily restricted filter puts strain on the system and reduces filtration effectiveness.
3. Visible Sediment or Cloudiness
If you can see particles or cloudiness in your filtered water, the filter is no longer catching fine sediment. Replace immediately.
4. It’s Been 12 Months
Even without obvious symptoms, replace at 12 months maximum. Carbon filters can harbour bacteria once exhausted — you’re no longer getting the protection you’re paying for.
5. Unusual Taste or Odour (Not Chlorine)
A musty, earthy, or metallic taste can indicate bacterial growth in an exhausted filter, or that the mineral stone stages need refreshing. Replace the cartridge and sanitise the reservoir. See: How to Clean a Water Cooler.
Frequently Asked Questions
How often should I replace my filter cartridge?
Every 6–12 months. In harder water areas (Perth, Adelaide), replace closer to 6 months. Browse our replacement cartridge range.
Can I test my water to know if the filter is still working?
Basic water test kits are available from hardware stores and can test for chlorine and pH. However, the simplest approach is to replace on schedule — don’t wait for test results. Call us on 1800 789 781 for advice.
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