Why Is My Water Pressure Low?

Low water pressure is a frustrating problem that affects everything from showering to running the dishwasher. The causes range from simple fixture issues to system-wide plumbing problems, and identifying the source is the first step toward restoring normal flow.

If only one fixture has low pressure, the issue is likely a clogged aerator or showerhead. Mineral deposits from hard water build up on these components over time, restricting flow. Removing and soaking the aerator in vinegar often solves the problem within minutes.

When low pressure affects your entire home, the cause is typically more significant. A partially closed main shutoff valve, a failing pressure regulator, or corroded galvanized steel pipes can all reduce water pressure throughout the house. Older homes in Los Angeles that still have original galvanized piping are especially prone to this issue as mineral buildup narrows the pipes from the inside.

Hidden leaks are another common cause. A leak in an underground supply line or behind a wall diverts water away from your fixtures, reducing pressure at the tap. An unexplained increase in your water bill often accompanies this type of problem.

Municipal supply issues, nearby construction, or peak usage times in your neighborhood can also temporarily reduce pressure. If the problem persists, a professional plumber can measure your pressure, inspect your pipes, and recommend the right solution. Agent Rooter offers comprehensive plumbing diagnostics and repair throughout Greater Los Angeles to get your water pressure back to normal.