Water Purification Tablets

Chemical tablets that kill bacteria, viruses, and parasites in water. Lightweight backup to mechanical filtration.

Why It Matters

Purification tablets are the ultimate backup water treatment. They weigh almost nothing, last for years, and can treat water even when your filter breaks or freezes. Unlike filters, tablets also kill viruses — making them essential for comprehensive water safety.

Features to Look For

Active ingredient
Chlorine dioxide is most effective and leaves least taste. Iodine works but has a stronger flavour.
Treatment time
Most tablets need 30 minutes for bacteria. Cryptosporidium may need 4 hours.
Shelf life
Unopened tablets last 4–5 years. Check expiry dates regularly.

Common Mistakes

Not waiting long enough
Drinking before the treatment time is up means you’re drinking unsafe water.
Using in very cold water
Chemical reactions slow in cold water. Double the treatment time below 5°C.

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