Is High pH in Pool Safe To Swim? Things to Know About Total Alkalinity

If your swimming pool water is murky or your facility’s filter seems to be clogged with calcium deposits, then you might be experiencing a high level of alkalinity. The alkalinity of a pool is measured at Total Alkalinity (TA) and is the amount of alkaline in the water.  

Today, I will teach you about TA, how it leads to high pH in water, and how to reduce it.

Is High pH in Pool Safe To Swim?

What Are the Effects of High Alkalinity?

As noted, TA measures the level of alkaline minerals present in the swimming pool. When these minerals are unbalanced, the water tries to adjust by depositing the excess minerals or getting minerals from other objects. 

The two conditions lead to problems in your swimming pool and make it hard to control the pH of the facility. TA should be between 100-150 ppm when your pool is in top condition.

A high TA of about 200 ppm or more will lead to the following things:

  • It can make your pool to appear cloudy and lead to scale deposits to settle on the walls of your pool, plumbing, and other equipment.
  • You will waste a lot of time when removing the scales and it will be expensive since you need chemicals to do that. 
  • High TA also results in high pH, eventually leading to a lock situation – it becomes harder to adjust the pH.

What Cause High Alkalinity?

One thing that can make the TA go high is if you add excess baking soda (sodium bicarbonate) to your pool when trying to boast it. Yes, low alkalinity is also a problem as you will see later in this article.

Thus, to prevent that from happening, you need to add small amounts of chemical to your pool when adjusting the TA levels. After that, test the water every day until you get the desired result.

Your water source can also make the TA go high. All water companies should disclose their water testing outcomes to the users – you can call your water supplier to know how much chemical you can add.

What Are the Effects of Low Alkalinity?

The alkalinity of less than 100ppm makes it hard to increase the pH of the water and will make the pool acid. That water can corrode your pool and other equipment. 

Besides, if the alkalinity is low, the water will start to draw minerals from your pool liner, leading to stretch and wrinkle. That means you will need to replace the damaged liner, costing you money.

Can You Swim in Pool with High Alkalinity?

High alkalinity is safe for the swimmer. However, it can lead to some conditions that can make your pool unsafe, including:

  • Unstable pH levels 
  • Cloudy water
  • Decreased chlorine effectiveness

Therefore, use caution when swimming in such a facility. It is better to keep the water balanced than swimming in such a pool.

Final Words

High Total Alkalinity leads to an increase in the pH level of your swimming pool. There are methods you can use to reduce the TA level, such as adding muriatic acid or dry acid. 
Source: Pool cleaner