Conventional water purification methods commonly used in homes like boiling, filtering or using candle filters have limitations.
For boiling to be effective as a water purification method, for instance, you must let the water boil for at least 20-25 minutes after water reaches boiling point. Moreover, there is a risk of recontamination during cooling down and when the water is stored in containers or bottles. This makes boiling impractical, time-consuming and often not completely safe. On top of that, this method is not able to remove harmful chemical impurities.
Ordinary candle filters and muslin cloth are ineffective when it comes to removing disease-causing bacteria and viruses. Boiling water by comparison is effective in killing bacteria and viruses but costly in the long run.
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