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Sara Oliver

How To Tell Where Your Inground Pool is Leaking?

Updated: Oct 23






As summer heats up, nothing feels better than lounging by your inground pool, soaking up the sun. But what if you start noticing your water level dipping a bit too quickly? That’s right—it could be a leak!


Don’t let panic set in just yet. Understanding how to detect a leak in your pool is essential for keeping your oasis in perfect shape.


In this article, I’ll walk you through the telltale signs of a leak, share some easy methods to find out where it’s coming from, and provide actionable tips on how to fix it.


Additionally, we’ll discuss important precautionary measures to help you avoid leaks in the future. So grab a towel, and let’s dive into everything you need to know to keep your pool crystal clear and ready for splashing fun!


10 Must-Know Signs Your Inground Pool is Leaking 


Here are 10 signs that your pool might be leaking—because knowing what to look for can save you time, money, and a whole lot of stress!


  1. Drastic Water Level Drop


    One of the most obvious signs of a leak is a significant drop in your pool's water level. If you notice that your pool loses more than an inch or two of water in a week—especially after accounting for evaporation—it’s time to investigate further.


  2. Increased Water Bills


    Keep an eye on your water bill! If you see a sudden spike without any changes in usage, it could indicate that your pool is leaking and causing you to use more water than usual to keep it filled.


  3. Wet Spots Around the Pool


    Have you noticed puddles or soggy patches of grass near your pool? Consistent wet areas around the perimeter may suggest that water is seeping out, signaling a potential leak.


  4. Cracks and Structural Issues


    Inspect your pool and its surroundings for cracks or settling. If you see cracks in the pool walls, coping, or deck, this may indicate a structural issue that could lead to leaks. Addressing these cracks promptly can prevent further damage.


  5. Frequent Need to Add Water


    If you find yourself constantly adding water to your pool just to maintain the proper level, it’s a strong indicator that something is amiss. Regular maintenance should only require minor adjustments; excessive refilling can point to a leak.


  6. Unexplained Algae Growth


    If your pool is developing algae or murky water more frequently, it could be linked to a leak. Leaks can disrupt the chemical balance in your pool, leading to poor water quality and making it easier for algae to thrive. If you’re having to shock your pool more often without significant swimmer activity, it might be time to check for leaks.


  7. Changes in Pool Equipment


    If you notice that your pool equipment, such as the pump or filter, is working harder than usual or making strange noises, it may be compensating for water loss due to a leak. Leaks can put extra strain on your equipment, leading to premature wear and tear.


  8. Check for Air Bubbles


    If you see air bubbles rising to the surface of the pool, especially around the skimmer or main drain, it might indicate a leak in the plumbing lines. Air entering the system can disrupt circulation and filtration, making it essential to address any leaks immediately.


  9. Visible Cracks or Gaps in Grout


    Take a close look at the grout between your pool tiles. If you see cracks or gaps, water may be escaping through these openings. Re-grouting can help seal these areas, but it’s essential to address any underlying issues causing the cracks first.


  10. Sudden Changes in Water Temperature


    If you notice sudden fluctuations in water temperature, it could be a sign of a leak in your pool's plumbing or heating system. Check for inconsistencies that don’t correlate with weather changes, as they could indicate escaping water.



How to Identify Where the Leak Is Coming From


Now that you know the signs, let’s figure out where the leak might be coming from. Here are some methods to help you pinpoint the problem:


1. The Bucket Test


This simple method can help determine if your pool is leaking or if the water loss is due to evaporation:


  • Fill a bucket with pool water and place it on the pool step, ensuring it’s submerged halfway.

  • Mark the water level inside the bucket and the pool’s water level on the outside.

  • After 24 hours, check both levels. If the pool water level drops more than the water in the bucket, you likely have a leak.


2. Check the Equipment


Leaks can also occur in the pool’s plumbing, filters, or pump. Look for:


  • Wet areas around the equipment.

  • Cracks or damage in pipes.

  • Broken fittings or connections.


3. Visual Inspection of the Pool


Inspect the entire pool area for any visible cracks or damage. Pay close attention to:

  • Tiles: Loose or broken tiles can indicate underlying issues.

  • Skimmer: Ensure that the skimmer and main drain are properly sealed.

  • Lights: Check pool lights for any signs of water ingress.


Locating Source of Leak 


Once you’ve confirmed there’s a leak, the next step is to find out where it’s coming from. Here are 3 methods to help you track it down:


  1. Check the Pool’s Equipment


The pool pump, filter, heater and other equipment are often the first places to inspect. Leaks in the pool’s plumbing system or around the equipment can cause significant water loss. Look for drips, wet spots or unusual sounds coming from the equipment area. A malfunctioning pump seal or cracked pipe could be the culprit. 


  1. Inspect the Pool’s liner or Shell


If you have a vinyl pool, the liner is prone to wear and tear over time. Inspect it for any rips, tears or separation from the pool walls. For concrete or fiberglass pools, look for visible cracks or areas where the surface feels soft or unstable. These can be indicators of structural leaks. 


  1. Dye Test for Precise Leak location


Once you have a general idea of where the leak might be, use a leak detection dye to pinpoint the exact spot. You can purchase leak-detection dye at most pool supply stores. Simply squirt the dye near the suspected leak area. If there’s a leak, the dye will be drawn toward the leak, showing you exactly where the water is escaping. 


Fixing the Leak


Once you’ve identified the leak, it’s time to take action. Here’s what you can do:


Minor Repairs:


Small cracks can often be patched using waterproof sealant or epoxy. For loose tiles, consider re-grouting or replacing them.


Professional Help:


For more significant issues, such as plumbing leaks or structural damage, it’s best to call a professional pool repair service. They can conduct a thorough inspection and provide the necessary repairs.


Conclusion 

Detecting a leak in your inground pool may seem overwhelming, but with the right steps and some simple tests, you can find and fix the problem before it gets worse.


Start by confirming the leak using the bucket test, then inspect most common areas for leaks, such as the pool's equipment, liner, and structure. If the leak proves difficult to find or repair, consider calling in a professional to help.


Addressing the issue early can save you money and prevent further damage to your pool.  We hope that you're now aware of all possible leaks or situations leading to leaks through this blog.


Are you ready to dive into a leak-free summer? Feel free to share your thoughts or ask questions in the comments below! Happy swimming, Paducah!


At Dreams Pools & Spas, we specialize in creating stunning, custom pool and spa experiences tailored to your lifestyle. Whether you're looking to install a new pool, upgrade your existing setup, or add luxurious spa features, our expert team is here to bring your vision to life! Don’t wait—schedule your free consultation today!


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