The answer to 'why is my drain low water pressure' is that there are several common causes, including a clogged or partially blocked drain, mineral buildup in the pipes, or a problem with the water pressure in your home's plumbing system. Low water pressure in a drain can be caused by a blockage or obstruction that is restricting the flow of water.
Some common symptoms of low drain water pressure include water draining slowly, gurgling sounds, or a complete backup in the drain. Potential solutions include using a drain snake or plunger to clear the blockage, removing and cleaning the drain strainer, or checking for any kinks or clogs in the pipes. If the issue persists, it may be necessary to call a professional plumber to diagnose and resolve the problem.