Myth 3: Running water is always safe drinking water.
Would you drink water from a river that runs next to a damaged nuclear plant? Of course not!
Though collecting water from moving water sources is often a better than drinking stagnant, muddy water, you cannot assume that running water is safe just because it is moving.
The safety of the water depends on the water source and what has emptied into the water during a disaster. In any emergency situation, you must rely on common sense and go with your instincts.