The defining characteristic of potable water is that it
a. is used as tap water
b. can be used for washing and irrigation
c. can be used and consumed without risk
d. is delivered through pipes

The answer is c. Can be used and consumed without risk

Consuming non potable water could generate a great risk toward our health because of the baacteria or any other small organism that might live in the water.

currentyly , about 89% people in the world have access to potable water. While the rest ( usually the one who live in non developed country) do not have access to it.

The defining characteristic of potable water is that it can be used and consumed without risk. The correct answer is C.

This cannot be said for other types of water - rivers for example aren't always necessarily healthy and clean enough to drink from.