how could water become undrinkable?

for my science i have to answer this question, and i have been searching the internet and havent found anything!

can anyone help me, much thankyous :D

Update:

undrinkable i mean unsafe to drink..

the topic we are on for this month is potable water.

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  • 9 years ago
    Favorite Answer

    Depending on what type of question you are asking, it could have a few answers.

    1. environment= The water could become so polluted that it would become undrinkable

    2. science= It would either become a solid or liquid state

    3. sociology= If water prices go up to high and tap water becomes polluted

  • 9 years ago

    This is a fairly ambiguous question... Do you mean physically undrinkable (like if it is evaporated or frozen)? I assume you mean unsafe to drink, which would could happen if a chemical was present in the water above toxic levels.

  • 9 years ago

    contamination or stagnation are the two most frequent causes of water becoming unfit for consumption, also known as 'potable'.

  • 9 years ago

    Throw a dead cow in it and let it stew for a week. Give it a temperature of 2 degrees K.Add hydrochloric acid to it.

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  • 9 years ago

    To much salt, animal feces, radiation, cholera, guinea worms.

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