Is Calcium Dangerous For My Swimming Pool?

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Calcium is dangerous for your swimming if you have too much! When it comes to calcium hardness in tap water there are certain places in the country that have much more than others. In those places, the calcium coming out of the tap water is higher than what is recommended for a swimming pool but it’s important to note that swimming pools need a certain amount of calcium to keep the interior finish intact but there are issues when it gets too high. For swimming pools, the standard and recommended¬†amount of calcium hardness are between 200 – 400 parts per million (ppm) but in certain areas of the country, the calcium hardness coming out of the tap is 400ppm and higher! The challenges for residential and commercial swimming pool owners is when calcium levels get too high in their swimming pool. When these levels continue to climb scaling occurs on the water tile line, the interior finish, filtration equipment, decorative water features, and spillways. It can also be challenging to manage the water chemistry too! If you happen to have a saltwater chlorinator, high levels of calcium hardness will prevent it from functioning properly.

So what happens when calcium levels get too high? The simple answer is it must be removed/lowered from the swimming pool water. At this point you can choose to drain and refill your swimming pool which takes 2-3 days, can damage your interior finish and you will be filling it back up with your cities hard water or you can recycle it using The Puripool Process. At Pool Services Technologies we offer Reverse Osmosis (RO) mobile filtration to lower calcium hardness, total dissolved solids, cyanuric acid, phosphates, salts, and waterborne diseases without draining the swimming pool. This service puts drinking quality water back in your swimming pool and you can swim in the pool while it is being filtered. Not to mention, we conserve up to 85% of the existing water in the swimming pool which is great for water conservation/drought-stricken areas.

Just this past week we had a customer who was dealing with high levels of calcium and we want to highlight how our service helped them. This was a 16,500-gallon swimming pool with the following chemistry:

Calcium hardness – 1030ppm

Total dissolved solids – 3830ppm

Cyanuric acid – 200ppm

After filtering this swimming pool for 12-hours with RO filtration we were able to leave them with the following chemistry which is far below tap water levels:

Calcium hardness – 150ppm

Total dissolved solids – 534ppm

Cyanuric acid – 45ppm

Our customer now has drinking quality water in their swimming pool and is left with water that is of the best quality. By choosing to use our service, they will be able to swim in water that feels better too. If you’re curious how this service will work for you, please contact us today!

1 Comment

  1. John says:

    What is the ballpark price for doing the reverse osmosis on a 30,000 gallon pool?

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