Why can’t you drink unboiled water?

1) When drinking raw water from polluted water bodies, cysts of dysentery amoeba, cholera vibrio and other parasitic protozoa and pathogenic bacteria can enter the human body.
2) An intermediate host of parasitic worms can be swallowed with raw water. For example, the Cyclops crustacean is the owner of the rishta.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.