Which way does water flow down the drain at the equator?

Answer 1

I assume you mean which way does water spiral into the bathtub drain. You probably heard water spirals one way above the equator and another way below, due to the corriolis force. That is incorrect; the corriolis force is far to weak to govern something that small. The actual direction the water will spiral depends mainly on the design of the bathtub and on which way you step out of it or move the water. Similarly the water in toilet spirals the way it does, because the water inlet is angled in that direction. Thus the same hold true at the equator. It depends on the bathtub design and which way you step out.

Answer 2

At the equator, water drains downwards.

Answer 3

Where at the equator? Its direction isn't based on location.

Answer 4

the same way as everywhere else.