If you own a swimming pool, it can be quite easy to notice a leak. Once you have opened your pool for the year, you can easily spot a leak by the water gushing out. Where the leak is coming from though, may be an entirely different story. Sometimes it may be easy to tell, although other times it can be a bit more complicated.

The first thing you need to do, is make sure that the water you see or notice missing is actually a leak. Even though you may think it’s a leak, it could be something else. Basically, there are three causes of water loss with swimming pools - plumbing leaks, shell leaks, and evaporation. You should make sure you know the cause of the leak before you go any further. Sometimes, what you think is a leak could be water lost from splashing - which can easily happen if you have a lot of people diving in your pool.

Evaporation is a common cause of water loss, and there is a way that you can determine if your loss of water is indeed evaporation. To find out, take a large container then fill it full of water and put it on the first pool step. Next, remove some water from the container sitting on the first step, so that the water in the pool and the container are the same level. Now, let the container sit there for a few days, with no one using the pool during the entire time.

When you check back in a few days, the levels should be the same. If they have gone down any, then you know that evaporation from the sun is to blame. If the water that you have in the pool has dropped a great deal more than what you have in the container, you’ll know that you have a leak in your pool.