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Cleaning water: The 3 best methods at a glance

  • Sep 10, 2025
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If you are on the go or traveling, it may be necessary to purify water to make it drinkable. In a few countries the water quality meets the usual standards of the German population. You can find out which methods are suitable for cleaning in this practical tip.

Clean water: Simply by boiling it

By simply boiling the water, you kill any bacteria or parasites present.

  • To effectively purify the water, it must boil for at least 15 minutes. Afterwards, all pathogenic germs are killed.
  • If there are solids in the water, let the boiled water stand for a while until the substances settle.
  • Strain the water through a clean cloth. Afterwards you can drink the water without any risk to your health .

Clean water with special tablets

Special tablets can also help you purify water .

  • The cleaning tablets kill bacteria present in the water. However, they do not help against visible contamination.
  • For this reason, you should first filter the water through a clean cloth.
  • Then add the cleaning tablet to the water according to the manufacturers instructions. Most cleaning tablets work best when the water is not completely cold.
  • Note that it takes about half an hour for the water to be free of bacteria.
  • With this type of cleaning, you also have to expect that your water will taste a bit like chlorine.
You can purify water by boiling it, using tablets or filters. imago images / CTK Photo

Use water filter for cleaning

Jug filters that you know from home are not suitable for purifying drinking water . Special filters are required for this purpose.

  • In order to purify water with filters and remove bacteria, the filter should have a pore size of around 0.1 micrometers.
  • In well-stocked stores for outdoor accessories you will find special bottles in which these special filters are installed. Bacteria even get stuck in the filter material.

Also interesting:

  • Drinking water from the tap: What you should know about it
  • Drink water properly: Everything you should know about it
  • Preserving water: This is how you can preserve your water supply

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