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Removing Calcium Hardness From Swimming Pools

There are many dangers of high Calcium Hardness (CH) levels in your swimming pool! When it comes to calcium in tap water there are certain places in the country that have much more than others and Southern California is one of them. 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. It is when those levels get too high that problems arise. For swimming pools, the standard and recommended amount of Calcium Hardness in the swimming pool industry are between 200 – 400 parts per million (ppm) but in certain areas of the country, the Calcium Hardness coming out of the tap is already over 400 ppm! 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, spillways, and salt chlorinators. 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 lowered from the swimming pool water. At this point, you can choose to drain and refill your swimming pool which takes 2-3 days, which can also 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 Pure Water Industries, we offer Reverse Osmosis (RO) mobile filtration to lower Calcium Hardness, Total Dissolved Solids (TDS), Cyanuric Acid (CYA), 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.

Just this past week we had a customer with a 20,000-gallon swimming pool who was dealing with high levels of calcium and we want to highlight how our service helped them. The following is their initial chemistry:

Calcium hardness – 11oo ppm

Total dissolved solids – 5848 ppm

Cyanuric acid – 100 ppm

After filtering this swimming pool for 13 hours with RO filtration we were able to leave them with the following chemistry which is far below San Diego tap water levels:

Calcium hardness – 140 ppm

Total dissolved solids – 714 ppm

Cyanuric acid – 0 ppm

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