Will my toilet flush counter clockwise?
From what I understand the direction of water in a flushing toilet bowl is due to the rotation of the earth on its axis so that will not change when the earth flips its magnetic field.
"Will my toilet flush counter clockwise?"
Much worse: it will flush backwards. Be warned.
South of the equator it goes clockwise. Go and look. If you go to the bathroom directly on the equator, it just sits there and looks back at you. That's called a "Third World Toilet".