To identify and resolve low water pressure issues, start by checking if the problem affects all fixtures or specific ones. Clean clogged aerators and showerheads if it's isolated to certain fixtures. For whole-house issues, inspect the main shutoff valve, ensuring it's fully open, and check for leaks in pipes. A failing pressure regulator or sediment buildup in pipes could also be the cause. If you're on municipal water, contact your provider to confirm if there's an issue on their end. For persistent problems, consider consulting a plumber to diagnose and address underlying causes effectively.