Why Is My Faucet Leaking?

A dripping faucet is more than an annoyance. Even a slow leak can waste thousands of gallons of water per year and drive up your utility bills. Understanding the cause helps you decide whether a simple repair will fix the problem or a replacement is necessary.

The most common cause of a leaking faucet is a worn-out washer or O-ring. These rubber components create a watertight seal inside the faucet handle. Over time, friction and mineral deposits cause them to deteriorate, allowing water to seep through even when the handle is fully closed.

Another frequent culprit is a corroded valve seat, which is the connection between the faucet and the spout. Sediment and mineral buildup from hard water can erode this component, leading to leaks around the spout base. In cartridge-style faucets, a damaged cartridge is often to blame and will need to be replaced entirely.

Loose or worn internal parts, improper installation, and high water pressure can also cause persistent dripping. If your water pressure exceeds the recommended range, it can strain faucet components and cause leaks at multiple fixtures throughout your home.

While replacing a washer is a straightforward fix, diagnosing the exact issue often requires disassembling the faucet. If a simple repair does not stop the drip, it may be time to upgrade to a new fixture. Agent Rooter provides expert faucet repair and replacement across Los Angeles with same-day service and upfront pricing.