High PH In Pool Safe To Swim?

Making your pool safe to swim requires consistent examination of the chemical level of your pool, such as the pH level of the pool. The pH level of any pool is the measure if the pool’s acidity and alkalinity and if you try to swim in a pool with an unideal level of alkalinity, it may be harmful to your health.

High PH In Pool Safe To Swim?

What is the Ideal pH Level to Swim?

When the pH level is at the ideal number, it helps the chlorine work perfectly and protects the skin and eyes from harsh chemicals. The right pH level of your pool would help the chlorine component protect your eyes and skin from harsh chemicals. The ideal pH level for swimmers is between 7.2 and 7.8, according to the Centre for Disease Control and Prevention. This level coincides with the pH level of most swimmers body, ensuring the water doesn’t cause any problem for them.

Is High pH in Pool Safe to Swim?

When the pH level of your pool is high, it is considered alkaline and can cause a problem for the pool owner as well as the pool. A pH level of above 7.8 would increase the alkalinity level of your pool and cause the pool water to become cloudy. It would also scale along the sides of your pool. A high pH level causes chlorine and other chemicals from adequately functioning, which lets bacteria in your pool survive. 

You may not notice the difference with bacteria in the pool, but if it finds its way into your body, it could become harmful.

Is It Safe to Swim in Pool with Low Alkalinity?

When the alkalinity level of your pool is low, that means your water is lower than 7.0 and highly acidic. You might also get to feel the difference in the pool as you swim. A low pH level in your pool can cause your eyes to burn while swimming underwater or irritate your skin. Just like a high pH level, chlorine and other chemicals do not work correctly when the pH level is low, causing all the dangerous bacteria to live freely. This can cause your pool metal to corrode while wrinkling the vinyl linings of the pool.

What Should Be Done?

To adjust your pH level at this stage would require carefulness as any mistake can throw the pool water off balance. It would be best if you always started at the shallow end when pouring additives into your pool. If the pH level is high, normalize it by adding dry acid to reduce the pH level. The amount you add depends on the pH reading of the pool. If your pH level is low and needs increasing, add sodium bicarbonate which can be easily found in baking soda to raise the level. You should check to see if the pool’s level is stable after two days to know if you need to add more substance to to raise or lower the pH level.


It isn’t safe to swim in a high pH level pool as this can be dangerous to the health and even detrimental to your pool. So always perform a chemical test to know the level of the chemical in the pool before use.

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