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High Calcium Hardness and Total Dissolved Solids Will Cause Damage To Your Pool

As a swimming pool owner in the San Diego area and many parts of the country dealing with high levels of Calcium Hardness and Total Dissolved Solids (TDS) is extremely common. We deal with it because of our tap water which is loaded with calcium, magnesium and other hardness minerals. Since we constantly fill up our swimming pools with hard water overtime this will cause problems. If you own a residential or commercial swimming pool have you ever noticed the white ring around the pool or around your water features? If you own a salt system have you ever dealt with having to remove calcium from the electrode plates? If you’ve answered yes to any of those questions, you will want to read the rest of this blog post.

Since we fill up our swimming pools with hard water, eventually it will increase in concentration. It rises in concentration because as pool water evaporates the hardness minerals remain in the water and gradually builds up in concentration. As the days, months and years go by eventually the water will get to a point where calcium scaling will occur on the water tile line, the interior finish, filtration equipment, salt water chlorinators, spillways and decorative water features. When this happens it can tough to look at and challenging to remove. In the swimming pool industry, the normal levels of Calcium Hardness in water is between 200 – 400 parts per million (ppm) and TDS is recommended to be below 3000 ppm. When these levels get higher than that, most pool professionals will recommend changing out the water or a drain and refill. At Pure Water Industries, we recommend recycling the swimming pool water using Reverse Osmosis (RO) filtration because we can not only give you better water than tap but we can also conserve up to 85% of the existing water in the pool too. This past week, we filtered a 20,000-gallon swimming pool because their calcium and TDS was high and we want to share those results with you.

Initial Chemistry

Calcium Hardness – 1000+ppm

Total Dissolved Solids – 10580ppm

Cyanuric Acid – 60ppm

After filtering this swimming pool for 14 hours we were able to leave them with the following ending chemistry which is much better than tap….

Calcium Hardness – 140ppm

Total Dissolved Solids – 864ppm

Cyanuric Acid – 0ppm

By using RO filtration we were able to give him much better water than tap and we were able to complete this job in less than a day. We are superior to a drain and refill because our water in San Diego isn’t as good as the drinking quality water that we can achieve. So, if you want to swim in the best quality of water this summer, contact us today to schedule an appointment!