The Most Common Pool Leaks and How to Spot Them Early

Keeping your pool in top shape is about more than just clean water and balanced chemicals. Hidden leaks can turn into serious problems if not caught in time. In this article, we’ll walk you through the most common types of pool leaks, how to identify them, and the key warning signs to look out for.

Where do leaks usually occur?

There are several critical points in a pool’s structure where water can escape. These are the most common:

• Skimmer: Cracks can develop over time where the skimmer connects with the concrete or fiberglass.

• Underground pipes: PVC connections may deteriorate or loosen due to pressure or soil movement.

• Pool lights: Light niches and seals can wear out, allowing water to seep through.

• Main drain: While less common, a leak in the main drain can be serious due to its depth.

• Structural joints or cracks: Concrete pools are especially prone to cracks over time, especially if curing was not done properly.

Early warning signs of a leak

Spotting a leak early can save you hundreds—or even thousands—of dollars. Here are the most common signs:

• Constant water loss, even when the pool is not in use

• Wet spots or puddles forming in specific areas around the yard

• Frequent algae growth in the same areas

• Air in the filtration system, bubbling returns, or strange noises

• A noticeable increase in chemical and water usage

How to confirm if it’s really a leak

One easy method is the bucket test. If it shows abnormal water loss, it’s time to bring in a professional. Leak detection experts may use:

• Hydraulic pressure tests in the plumbing lines

• Dye testing for visible leak areas

• Camera inspections for underground pipe systems

Don’t ignore the signs

Neglecting a leak can damage more than your wallet—it can compromise the pool’s structure, filtration system, pumps, and even the surrounding ground.

Knowing where the most common leaks occur helps you act in time. If you notice any unusual signs, don’t ignore them. A quick response today can prevent major repairs tomorrow.