Why does the water in the toilet move counter clockwise when flushed?

Answer 1

TO THE VOTERS: If you don't really know, don't vote! You voted as "bad" some answers that aren't really bad; just incomplete.

The complete and correct answer is:
Whilst it's the angle the water jet was squirted out of the rim which plays the main role here, the Coriolis effect is noticeable too, in that it causes a counter clockwise motion in Earth's northern hemisphere and a clockwise one in the Southern hemisphere (Australia) which superpose over the motion the squirting angle gives.

However, there exist many toilets which squirk the water jet under a neutral angle - an angle that doesn't cause water to spin dued to squirking angle (which is too bad for self-cleaning) - and yet a spin is visible and quite strong (much like in the case of a sink or bath-tub). That spin is dued to the Coriolis effect ENTIRELY, which causes the clockwise / anticlockwise spinning depending on the Earth's hemisphere.

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Answer 2

It has nothing to do with the way the Earth is turning! It has everything to do with the way the toilet is made. If the water enters the bowl in a clockwise direction, it will flush down in a clockwise direction. If it enters the bowl in an anti-clockwise direction, it will flush down in an anti-clockwise direction.

Answer 3

Water is squirted out of the rim at an angle to cause the water to swirl. If your toilet was not designed to have this self-cleansing action, there would be brown stains all over the inside of your bowl.

Answer 4

its clockwise in Australia. it has to do with the way the world is turning about in space.

Answer 5

The Coriolis effect.