The answer to 'toilet low water pressure' is that there are several common causes, including a clogged or malfunctioning fill valve, a problem with the water supply line, or mineral buildup in the toilet's internal components. Symptoms may include a weak flush, slow refilling, or the toilet not filling up completely.
Some potential solutions you can try yourself include checking the fill valve, cleaning the toilet's internal components, and ensuring the water supply line is not kinked or restricted. If the problem persists or you're unsure of the cause, it's best to call a professional plumber to diagnose and fix the issue.