What could be causing low water pressure in one faucet and how can it be resolved?

Low water pressure in one faucet could be caused by a clog in the faucet aerator, a partially closed shut-off valve, or mineral buildup in the pipes. To resolve this issue, you can try cleaning the aerator, ensuring the shut-off valve is fully open, or flushing out the pipes to remove any mineral deposits. If these steps do not improve the water pressure, it may be necessary to consult a plumber to further diagnose and fix the problem.