Water Purifier cartridges found here do not have an expiry date, they purify the specified litres of water and it doesn't matter how long this takes. Amazing technology; the purifier cartridge will prevent bacteria growth even when water is stagnent. You can go on holiday for any length of time and come back to clean, safe, great tasting, purified water. With regular daily use (for drinking & cooking) in a household of four people a purifier cartridge will need replacing after approximately 2 years.
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Water Filter cartridges must be replaced every 12 months.
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