Check Water Flow if Toilet Malfunctions

If your toilet is not flushing properly, you might think it’s low water pressure that’s causing the problem. But pressure has nothing to do with it.

The water in the tank does the job. It fills the bowl and starts the flush-and-siphon action, and the p-trap below completes it. Gravity starts a flush, and natural siphoning draws it through.

When a toilet doesn’t work right, something is inhibiting water flow. Maybe a line is blocked; or water ports under the rim are clogged; or the tank is not full enough. If it’s low, adjust it by raising the float. Then try cleaning the water ports using white vinegar and a coat hanger. If that doesn’t do it, call in a sewer and drain specialist.