Is Your Pool Losing Water?

Owning a pool in Round Rock is a dream during our blistering Texas summers. But that dream can quickly turn into a headache when you notice the water level dropping faster than it should. Is it just the Round Rock heat, or do you have a serious problem hidden beneath the surface?

Water loss is one of the most common concerns we hear from homeowners in the Brushy Creek and Round Rock West areas. Because our region deals with unique soil conditions and extreme temperature swings, pool leak detection is a critical part of maintaining your investment. In this guide, we'll help you determine if your water loss is normal or if it's time to call in the professionals.

Evaporation vs. Actual Leak: What's Normal?

Before you panic, it's important to understand that every pool loses water. In Round Rock, evaporation can be significant, especially in July and August when humidity is low and the sun is relentless.

On a typical Central Texas summer day, a pool can easily lose 1/4 inch to 1/2 inch of water to evaporation alone. If you have water features like waterfalls, bubblers, or deck jets, that number can go even higher because more water surface area is exposed to the air.

However, if you're adding an inch or more of water every day or two, you likely have a leak. The first step is always to differentiate between environmental factors and structural or mechanical failure.

The Round Rock Soil Factor: Expansive Clay

Why do pools in Round Rock seem to leak more often than those in other parts of the country? The answer is right beneath your feet: Blackland Prairie clay soil.

This expansive clay acts like a sponge. When it rains, it swells with incredible force. When it dries out during a Texas drought, it shrinks and cracks. This constant movement puts immense pressure on your pool shell, the plumbing pipes buried underground, and the concrete decking.

Over time, this "heaving" can cause:

• Underground PVC pipes to snap or pull away from fittings.
• Hairline cracks in the pool's plaster or gunite shell.
• Separation between the pool tile and the coping.
• Damage to the skimmer throat where it connects to the pool.

The Bucket Test: Your DIY First Step

If you aren't sure if you have a leak, you can perform a simple DIY test called the Bucket Test. This is the same method we recommend to all our clients before they book a professional service.

1. Fill a 5-gallon bucket with pool water to about 5 inches from the top.
2. Place the bucket on the first or second step of the pool (so the water in the bucket stays the same temperature as the pool).
3. Mark the water level inside the bucket with a piece of tape or a Sharpie.
4. Mark the pool's water level on the outside of the bucket or on the pool tile.
5. Wait 24 hours (ensure no one swims and no rain falls).
6. Compare the two marks. If the pool level dropped significantly more than the bucket level, you have a leak.

For a more detailed breakdown, check out our step-by-step bucket test guide.

Signs of a Leak Beyond Water Loss

Sometimes the signs of a leak aren't found in the pool itself, but in the surrounding environment. Keep an eye out for these red flags:

• Wet Spots in the Yard: If you have a patch of grass that is always soggy or greener than the rest of the lawn (and it hasn't rained), an underground pipe might be leaking.
• Cracks in the Deck: While some cracking is normal in Texas, new or widening cracks near the pool edge can indicate the soil is being washed away by a leak.
• Air Bubbles: If you see constant air bubbles coming out of the return jets in the pool, your pump might be sucking air through a leak on the suction side of the plumbing.
• Localized Algae: If you have one spot in the pool where algae always grows, even when the rest of the pool is clean, it might be because a leak is pulling chemicals out of that specific area.

When to Call a Professional

If your bucket test confirms a leak, or if you can see water actively spraying from your equipment, it's time to stop guessing. DIY patches rarely work for long, and they often hide the underlying cause of the problem.

Professional leak detection involves specialized equipment that can "hear" water escaping through a crack or feel the pressure drop in a plumbing line. At Centex Pool Repair, we use:

• Pressure Testing: We isolate the plumbing lines and test them with air or water to see if they hold pressure.
• Electronic Listening: We use ultra-sensitive microphones to pinpoint the exact sound of a leak underground, saving you from unnecessary digging.
• Dye Testing: We use specialized dyes to see if water is being pulled into structural cracks or around the light housings.

The Cost of Delay

It can be tempting to just keep the garden hose running and ignore a small leak. However, in Round Rock, this is a dangerous gamble.

First, the water bill alone will eventually cost more than the repair. Second, leaking water under your pool deck or foundation causes soil erosion. As the soil washes away, your pool shell or deck can lose its support, leading to massive structural cracks that cost tens of thousands of dollars to fix.

A small leak today is an easy fix. A structural failure next year is a nightmare.