Sorry to say that on such a small scale the Coriolis force has not much influence. The rotational direction water travels is due to the design of the facility or prior movement of water. In a laboratory setting it may be possible to get the water stable enough to be influenced by the Coriolis force, but in a house just walking up to the sink will produce vibrations that will influence the water. Even larger scale phenomena are not readily affected by the Coriolis force, tornados and rotational microbursts can go either way. It’s only really big stuff, like hurricanes and typhoons.