A shower that refuses to drain properly is a frustrating and often unsightly problem. Whether you're dealing with a slow drain or water that pools around your feet, there are a few common causes behind this issue. At Frank's Mr. Plumber, we’ve seen it all—and we’re here to help you troubleshoot and solve the problem.

1. Clogged Drain: The Most Likely Culprit

The most common reason your shower isn't draining properly is a clog. Over time, soap scum, hair, and debris accumulate in the drain, slowing down water flow. If the clog is near the surface, you might notice water draining slowly, while a deeper clog may result in water pooling.

2. Dirty or Damaged Drain Trap

A drain trap (the U-shaped bend in your plumbing) is designed to catch debris and prevent it from traveling further into your pipes. However, if it becomes clogged or damaged, it can prevent water from draining effectively. This is more common in older showers or plumbing systems.

3. Blocked Vent Pipe

The vent pipe helps regulate air pressure in the plumbing system, allowing water to flow freely down the drain. If this vent pipe becomes blocked by debris, it can result in slow drainage or a complete backup.

4. Poor Drainage Design

If your shower has never drained properly, it may be due to a poorly designed plumbing system. Incorrect slope in the pipes or an improperly installed drain can cause water to collect rather than flow smoothly into the sewer.

5. Hard Water Buildup

In areas with hard water, mineral deposits can accumulate in your pipes, narrowing the drain and slowing the water flow. Over time, this buildup can cause persistent drainage issues.