Four Signs That Your Pool Might Be Leaking

Four signs of a pool leak

Signs my pool is leaking

Estimated reading time: 4 minutes

Okay, so at this point, you are probably seeing some things happening to your pool or backyard that you’re not used to seeing. You have a thought that it might be your pool causing the issue but you’re not sure. Or maybe your pool maintenance person has told you they think you have a leak and should contact a leak detection company.

However, you‘re not ready to call a company yet because you want to know for certain whether you have a pool leak or not. Smart!

So, here are some of the main things to look for when you have a pool leak, and how to test for it. The last thing on this list will definitely tell you if you have a pool leak, so read to the end.

Here are the most common signs of a pool leak:

1. Wet Spot in your Yard

Signs your pool is leaking
Wet Spot in a yard

Many of us have heard that if there is a wet spot in the yard that it is probably from a pool leak. This is the case often enough. However, it isn’t always true AND often times pools leak without showing any signs at all.

So, check if your irrigation system might be causing the wet spot as well. We have seen wet spots travel over from neighbor’s yards as well, so a wet spot might not always be from the pool, but it’s a good indicator.

2. Water Running in Alley Way

This is another very common thing we see in pool leaks. Again, most pool leaks don’t show signs like this, but it happens often enough that if you see it then it would be wise to suspect your pool.

As the last sign, this can also be from irrigation, not only from your yard but also from a neighbor’s yard. There are a couple of good things to check.

– If you can get a good enough sample, test the water leaking with a pool chemical test kit. If the water leaking out into your alley has chlorine or other chemicals in it that your pool has, you can assume it’s from your pool.

– Check the backwash while your pool is running. You might be leaking from your backwash, and that water often goes through a french drain to your alleyway. (This is good to check no matter what if you suspect a leak)

3. Super High Water Bill

This is very common! We hear from people who one month all of the sudden have a $500 water bill or more! This is a good indicator of a pool leak. 

This type of thing mainly happens if your pool has an autofill. If your pool has an autofill, turn it off and see if the pool is losing water. If the pool doesn’t lose any water when you turn the autofill off, then that water spike is likely due to another leak on your property or in your house.

And Most Importantly…

4. Your Pool is Losing Water

Here’s one of the most important things you should understand as a pool owner. If the pool is not losing water, your pool does not have a leak.

This may seem obvious, but sometimes it’s easy to blame the pool when wet spots appear.

There are two simple ways to see if this is the case.

Click on the link above to go to our page that shows you exactly how to do the bucket test. It’s super easy, super cheap and you’ll have peace of mind knowing whether or not your pool is leaking.

If you don’t want to do a bucket test or don’t have the right equipment to do one, simply put a piece of tape where the water level is and go back to the pool 24 hours later with a ruler and measure how far the water has dropped. 

Depending on the weather, you can expect to lose 1/8-1/4 in evaporation. So anything over that you could very likely consider a leak.

Depending on the weather, you can expect to lose 1/8-1/4 in evaporation. So anything over that you could very likely consider a leak.


Follow these steps so you can be sure whether you have a leak or not and if you do, call a leak detection specialist.

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