All of the microorganisms would absorb the water, and become corrupted because of the microorganism's that water itself contains.
Bacteria and yeast are used to preserve food. Most microorganisms are present in the food already, but in some cases, they are added.
It depends on the amount of salt. It can "pull" the water out of the microbes, killing them. This is the reason salt is used to preserve food as microbes can't grow on very salty food.
If microorganisms are used in the water treatment plant then it is necessary to provide oxygen to them and make the sludge degradation through them so air is bubbled for oxidation as well as for microorganisms.
Salt is used as a preservative because absorbing water destroy microorganisms.
Infusion
To minimize the risk of infection by microorganisms in much tap water.
Chlorine kills many disease-causing microorganisms, which is why it is added to water.
Chlorine is added to water in an effort to kill of harmful microorganisms in the water.
Chlorine being a poisonous gas kills microorganisms and bacterias in water supplies
Absorbing water sodium chloride kill all microorganisms.
Sodium chloride destroy microorganisms absorbing all the water.
A culture can be a microorganism (if I'm not mistaken), and cultures can create cheese. Otherwise there is Pasteurization, which is killing the microorganisms by boiling the milk or water or whatever other liquid