Why drain your pool?

Why drain your pool?

Water is a chemical compound with a chemical formula that almost all of us know, H2O.  When we turn on our faucet or fill up our swimming pool, the water that we get is made up of several compounds, including H2O.  It is said that our tap water can contain over 2000 different components other than H2O.  Those components include nitrates, calcium, magnesium, sodium, potassium; the list goes on and on. Some of these compounds are referred to as Total Dissolved solids or TDS.


Why does the water in a pool get old?

If we only filled our pools up once and forgot about them that would be the end of our story but we are constantly adding water because of cleaning, splash out or other activities and evaporation. When we lose water to evaporation, we only lose pure water (H2O), any other components in the water are left behind. When you add water to your swimming pool you are filling it up with H2O and all the other components that make up your tap water.  When you are replacing water due to evaporation, you are increasing the concentration of all the other components, including TDS.

 As your swimming pool water ages the concentration of other components increase, changing the characteristics’ of your water. This affects several things but what’s most important, it changes how the water feels and how sanitizing chemicals react.  For the pool owner or swimmer, how the water feels is paramount. A higher concentration of TDS can cause the water to feel hard, making it uncomfortable, causing eye irritation and itchy skin plus other things that make swimming no fun. For the pool technician it can cause scaling, inhibit sanitizing chemicals from working effectively and cause the customer higher costs and maintenance fees.


How often or when should I drain my pool?

There is no time table in years that will determine when you need to address these issues. In hot, dry climates water loss to evaporation is high and pool water can become old very quickly so replacing all or some of your pool water will need to be done more frequently than in other climates. Smaller pools and spas with a smaller amount of water will have concentration levels build up even faster so they might need to be done more often as well. A pool professional can check your swimming pool and advise you on your options.


Why drain your pool?

No matter where you live or what size pool you have, at some point you will need to reduce the concentration of everything in your pool besides H2O.





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