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Lowering Calcium Hardness and TDS With The Puripool Process

With fall approaching many residential and commercial swimming pool owners stop thinking about their swimming pools. If your Calcium Hardness levels are high this isn’t a good idea….

Calcium, which is found in our water in the Southwestern United States can really cause major problems if you own a swimming pool. You’re going to want to have some calcium in the pool (200-400 parts per million) but what happens when it goes above 400 ppm? In the southwest, our fill water comes from the Colorado River which carves its way through the Grand Canyon and is loaded with limestone. During this time it picks up calcium and other hardness minerals which makes our water extremely hard and potentially dangerous for your swimming pool. Over time, as the water evaporates in the pool the hardness minerals remain in solution and gradually build up in concentration. Typically swimming pool owners see this scaling on the interior finish, the tile, and water features. Keep in mind, calcium which is naked to the human eye is also scaling the plumbing and filtration equipment too. When calcium levels get high (typically above 800 ppm) many pool professionals will recommend the following:

1. Drain the pool which most swimming pool stores will recommend

2. Recycle the swimming pool water with The Puripool Process

If you choose to drain a pool it can take three or more days depending on the size of the pool, it wastes on average 20,000 gallons of water and your tap water is already high in calcium. The best option is to recycle the swimming pool water which is an alternative to draining the pool. Our Reverse Osmosis (RO) mobile filtration system purifies the swimming pool water by removing the hardness minerals and other contaminants leaving you with the best water possible in your pool. The entire process is done on sight, it takes less than 24 hours on most standard size residential pools, it is competitive in price and allows you to conserve up to 85% of the existing water in the pool. The entire process is self-contained (we run on our own power), quieter than an AC unit and keeps your pool looking great if it’s performed every two years.

This past week we processed a swimming pool that had extremely high calcium levels. The following are the results we achieved.

Initial Chemistry 

Total Dissolved Solids – 8252 ppm

Calcium Hardness – 1480 ppm

Cyanuric Acid (CYA) – 40 ppm

After filtering this 16,000-gallon pool our client was left with the following ending results:

Ending Chemistry

Total Dissolved Solids – 880 ppm

Calcium Hardness – 140 ppm (minimum coming out of the tap in the San Diego area is 250 – 300 ppm)

CYA – 0 ppm

If you should have any questions about The Puripool Process please contact us today!