Lowering TDS Levels In Your Pool

If you own a residential or commercial swimming pool in the Dallas Ft. Worth area, you are going to have to deal with Total Dissolved Solids (TDS). TDS is best described by, “the total amount of mobile charged ions, including minerals, salts or metals dissolved in a given volume of water, expressed in units of mg per unit volume of water (mg/L), also referred to as parts per million (ppm).” In the swimming pool industry, TDS is directly related to the quality and purity of water and usually is a number that is referred to when it’s time to change out the existing water in your swimming pool. Between TDS, Cyanuric Acid (CYA) and Calcium Hardness, they are the most common reasons in the pool industry as to why changing out the water would be suggested. Dissolved solids come from organic sources such as leaves and silt, it can also come from fertilizers and pesticides too. Dissolved solids also come from inorganic materials such as rocks and air that may contain calcium bicarbonate. But, the most commonplace that these dissolved solids come from is our water. The water picks up many of these metals because of where it is sourced which over time causes numerous problems to the interior finish of the swimming pool, the tile, and your filtration equipment. It’s not uncommon for the water to be coming out of the tap at 300 ppm Calcium Hardness and 800 ppm or more TDS in Dallas.

As water evaporates, the minerals remain in solution, gradually build up in concentration and slowly destroy the interior finish of the swimming pool but can also make it harder to handle the water chemistry as well. The general rule of thumb is to change out the water every two years. If you take a water sample into a pool store they will usually recommend changing out your water when TDS levels climb above 3,000 ppm.

TDS is a widely used number in the swimming pool industry. When it comes time to change out the water in your swimming pool we recommend using the ‘Puripool Process” which is a Reverse Osmosis (RO) Mobile Filtration system that comes to your home or commercial property and recycles the existing water in the swimming pool. This prevents the need to drain your pool which is dangerous and can typically be done in less than a day. Not to mention our mobile filtration technology will leave you with better water than you’d get out of the tap.

Our mobile filtration trailers are equipped with high-pressure RO membranes that can lower TDS and other hardness minerals while conserving up to 85% of the water in the swimming pool. We recently recycled a residential swimming pool with extremely high TDS levels:

Calcium Hardness – 760 ppm

Total Dissolved Solids – 7612 ppm

CYA – 45 ppm

After filtering this residential swimming pool with RO filtration we were able to lower the levels below what our tap water is….

Calcium Hardness – 140 ppm

Total Dissolved Solids – 862 ppm

CYA – 0 ppm

If you’re curious to learn more about how our service can help you, please contact us today!