How Often Should You Test Salt Water Pool? [Fact Checked!]

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Are you planning to have a salt water pool in your backyard? If so, you may be wondering how often you should test the water quality of your pool. Believe it or not, different factors affect the water quality of your pool depending on how often you test it. By understanding these factors, you can determine how often you should test the water in your pool.


Just because your pool is heated doesn’t mean that the water is automatically safe to drink. In fact, the water in your pool may be more likely to become contaminated if the temperature is too high. The general rule of thumb is that the water in your pool should be between 76-78 degrees Fahrenheit. If you don’t have a well-insulated pool or it’s directly exposed to the sun, the temperature may rise faster than expected, causing serious harm to your pool’s water quality.


Did you know that algae grows quite quickly in warm water? And what is worse is that the algae in your pool can produce toxins that are harmful to your health. Fortunately, you can eliminate most of the algae in your pool by regularly testing and inspecting it for algae growth. In addition to testing and removing any signs of algae growth, you should also make sure to clean the pool regularly to keep the water free of dirt and other particles that may cause clogging. As a matter of good practice, you should cleanse your pool at least once a week with water changing, filter cleaning or both.

Chemical Imbalance

Did you know that chlorine is one of the main causes of pool water contamination? Just like in lakes and seas, the water in your pool often becomes contaminated from excessive amounts of chlorination. The good news is that this can be easily fixed by regularly testing the pH level and adding acid or alkali if necessary. To illustrate, if your pool’s pH is lower than 7.2, you should add more acid to raise the pH level. On the contrary, if your pool’s pH is higher than 7.6, you should add more alkali to lower the pH.

Filtration System

Did you know that the filtration system in your pool might be the source of most of the contamination? Believe it or not, although your pool’s water looks clean and inviting, it can still contain traces of chemicals that make you sick. In particular, sediment and small debris often accumulate at the bottom of your pool, causing potential health risks due to the presence of fecal coliform bacteria and other pathogenic microorganisms. Filtration systems are essential for removing these harmful particles from your pool. In fact, the recommended replacement time for most pool filter systems is between 6-12 months.


Did you know that swimming pools are not meant to be brightly lit? Specifically, sunlight can seriously damage the aesthetic appearance of your pool as well as its water quality. For this reason, lighting with a color temperature above 4,000K should be avoided since this will cause your pool to look dirty. Moreover, excessive lighting may also cause algal growth and attract mosquitos, which can transmit diseases like malaria and dengue fever. To keep your pool looking its best, you should ensure that no direct sunlight reaches it.

As you can see, there are many variables that affect the quality of the water in your pool. To keep your pool clean and safe to drink, you must test it at least twice a month and possibly more frequently depending on how often you notice signs of contamination. If you want to keep your pool’s water quality at its best, you should also clean it at least once a week with water changing or filter cleaning (if it has one). As a general rule of thumb, it is advisable to test the pH level, add chemicals as needed and clean the pool when needed. If you want to learn more, contact your local swimming pool authority or pool service provider for help. Good luck!

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