Leak Detection

Swimming Pool Leak Detection

If your pool is losing water you might need a professional leak detection in order to find the source of the leak. How can you know if you’re losing water due to a leak? How can you know how much you’re losing? What can you do to try to find the leak yourself before calling in the professionals? How can you know which company to call? This article will help to answer all of these questions.

How to determine if you have a leak

Depending on many factors, during the hot summer months here in Texas your swimming pool could possibly lose as much as 1/2” of water per day due to evaporation!! Most pools won’t lose quite that much but it is important to keep in mind that your pool will naturally lose some water every day due to evaporation.

Luckily, there is a simple way to measure your water loss due to evaporation vs other causes. We call it the Bucket Test. Go here to read the instructions on how to perform the bucket test.

Once you have performed your bucket test, you’ll know if you are losing water due to a pool problem or if you are only losing water due to evaporation as well as how much water you are losing.

You’ve Detected a Leak

You’ve discovered you have a leak somewhere after doing the bucket test. If you are now ready to call in the professionals to find it for you, skip ahead to the next section. If you have an investigative nature and would like to give it a try yourself first, keep reading.pool_spa_schematic2

Finding pool leaks can be a very difficult, frustrating process. Even for the professionals. This is due to the countless number of places and ways that a pool can leak. See the diagram to the right to get an idea.

There are, however a few common problem spots that you can check for yourself by performing a Dye Test. Click here to learn about dye testing. If you’d like to try it for yourself, start with these:

Skimmer Throat


Main Drain Bucket

Around Fittings

If you were able to find a place that was “sucking dye”, pat yourself on the back for excellent detective work! You can now attempt to fix the problem by applying a 2-part marine epoxy to the problem spot. Ask at your local pool supply store or hardware store. After applying the epoxy, perform the dye test again to see if the problem is fixed. Then, time for another bucket test to determine if that was the only problem.

If you were unable to find the source of the leak, it’s time to call in the professionals. Due to the nature of the soil in North Texas, it is not uncommon for underground pool plumbing to break when the earth shifts. Finding the locations of these breaks is a complicated task that requires specialized equipment.

Professional Leak Detection

A full Leak Detection by a professional Leak Detection Company should involve the following:

  1. Inspection of pool equipment
  2. Visual inspection of pool
  3. Dye test of all possible problem spots in pool (it is possible during the winter months that the leak detection company will charge a small fee if they need to dive your swimming pool)
  4. Integrity test of all underground plumbing by pressurizing the lines and verifying that they hold pressure perfectly

If the professional finds that your underground lines do not hold pressure, then you have a broken line. The next step is for the professional to attempt to locate the break. There are different methods for this. The most common and reliable way that we employ is through use of specialized sonar equipment. With the lines plugged, we run air through them and use our sonar to listen all around the pool and try to hear where the air is escaping underground.

The next task is to dig down and fix the break! We highly recommend that you allow the Leak Detection Company to perform this fix so that they might again test the lines once the break is repaired. It is not uncommon to have more than one break in a line.

If you are ready to call a professional Leak Detection Company out to your pool, read this article to help you choose the right company.

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