Shower Faucet Leak: Why Your Water is Coming Out Wrong

Virginia Jul 01, 2026

Ever noticed water trickling from your shower faucet when you're not using it? This common plumbing issue, often referred to as a 'running shower', can be frustrating and wasteful. But don't worry, you're not alone, and there are several reasons why this might be happening. Let's dive into the possible causes and solutions for your shower coming out faucet.

the shower head and handset are connected to the wall in this modern style bathroom
the shower head and handset are connected to the wall in this modern style bathroom

Before we get into the nitty-gritty, it's essential to understand that a running shower can be due to either a problem with the faucet itself or an issue with your home's plumbing system. Let's explore these possibilities under two main topics: Faucet-related issues and Plumbing system issues.

Bathroom & Kitchen Faucets, Shower Heads, Accessories & More
Bathroom & Kitchen Faucets, Shower Heads, Accessories & More

Faucet-related Issues

Your shower faucet is a complex mechanism with several components that can wear out or malfunction over time. Let's look at two common faucet-related issues that might cause your shower to run constantly.

Brass Antique Bathroom Shower Faucet Set Wall Mount Dual Handle Handshower Shelf Brass Bathro...
Brass Antique Bathroom Shower Faucet Set Wall Mount Dual Handle Handshower Shelf Brass Bathro...

Worn-out Washer

A washer is a small, flexible disc that creates a watertight seal in your faucet. Over time, washers can harden, crack, or become dislodged, allowing water to leak continuously. If your shower faucet is old or hasn't been maintained properly, a worn-out washer might be the culprit.

Hansgrohe Shower
Hansgrohe Shower

To fix this issue, you'll need to replace the washer. This is a relatively simple task that typically involves disassembling the faucet handle, removing the old washer, and installing a new one. If you're not comfortable doing this yourself, don't hesitate to call a professional plumber.

Faulty Cartridge

Some shower faucets use cartridges instead of washers to control water flow. If your faucet has a cartridge, it might be faulty and causing your shower to run constantly. Cartridges can become worn out, cracked, or clogged with mineral deposits, leading to water leakage.

a shower head with water coming out of it
a shower head with water coming out of it

Replacing a faulty cartridge is similar to replacing a washer, but the process might be more involved depending on the type of faucet you have. If you're unsure about how to do this, it's best to consult a professional plumber to avoid damaging your faucet or causing further leaks.

Plumbing System Issues

Sometimes, the problem might not be with your shower faucet but with your home's plumbing system. Two common plumbing issues that can cause a running shower are water pressure problems and cross-contamination.

a bathroom with a sink, shower head and bathtub faucet in it
a bathroom with a sink, shower head and bathtub faucet in it

High Water Pressure

Excessively high water pressure can force water through your faucet even when it's turned off. If your water pressure is too high, it might be causing your shower to run constantly. To check your water pressure, you can use a water pressure gauge, which you can find at most hardware stores.

Regendoucheset
Regendoucheset
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If your water pressure is too high, you can install a water pressure regulator on the main water supply line to your home. This device will reduce the water pressure to a safe level, preventing it from forcing water through your faucet. If you're not comfortable installing this device yourself, consult a professional plumber.

Cross-contamination

Cross-contamination occurs when water from one fixture (like your shower) is being siphoned into another fixture (like your bathtub faucet) due to a problem with your plumbing vents. This can cause water to run continuously from your shower faucet, even when it's turned off.

To fix this issue, you'll need to have your plumbing vents inspected and repaired by a professional plumber. This might involve cleaning or replacing vent pipes, or installing additional vents to ensure proper airflow in your plumbing system.

In many cases, a running shower can be fixed with a simple repair or replacement of a worn-out component. However, if you're not comfortable tackling the problem yourself, don't hesitate to call a professional plumber. Regular maintenance and inspections can help prevent these issues from happening in the first place, saving you time, money, and frustration in the long run. So, don't ignore that trickling sound – take action today to solve your shower coming out faucet problem and enjoy a peaceful, water-saving bathroom experience.