TDS pool water test equipment

Do you struggle with high levels of Total Dissolved Solids (TDS) in your swimming pool? Has anyone told you it’s time to lower total dissolved solids in your swimming pool? Depending on who you talk to our what pool store you have your water tested at this is a reading many refer to when it’s time to change out the water in your swimming pool! According to Wikipedia, TDS is a measure of the combined content of all inorganic and organic substances contained in a liquid in molecular, ionized or micro-granular suspended form. Generally, the operational definition is that the solids must be small enough to survive filtration through a filter with two-micrometer (nominal size, or smaller) pores. Total dissolved solids are normally discussed only for freshwater systems, as salinity includes some of the ions constituting the definition of TDS. The principal application of TDS is in the study of water quality for streams, rivers, and lakes although TDS is not generally considered a primary pollutant (e.g. it is not deemed to be associated with health effects) it is used as an indication of aesthetic characteristics of drinking water and as an aggregate indicator of the presence of a broad array of chemical contaminants. So at this point, you might be asking yourself, what does this mean and what causes TDS to rise in your swimming pool?

TDS rises because of the following:

  • Calcium Hardness (CH)
  • Salt
  • Chlorine and Shock
  • Sweating in the pool
  • Hair products

The following are signs of high levels of TDS in your swimming pool:

  • Cloudy water
  • Scale and stains on tile and interior finish
  • Trouble keeping adequate levels of chlorine in your pool
  • Salty taste to water

Ideally, as a swimming pool owner, you will want to have less than 2000 parts per million (ppm) TDS but if you live in the Greater Phoenix area that can be challenging because our fill water is loaded with calcium and other hardness minerals. With that said, most pool professionals will recommend changing out the water in your swimming pool when TDS levels climb above 3000 ppm (unless you have a salt pool). When this happens you can use Reverse Osmosis (RO) mobile filtration to lower TDS and the following:

  • Calcium Hardness
  • Cyanuric Acid
  • Phosphates
  • Salts
  • Waterborne Diseases

At Monarch Pool Service, we feel strongly that when it comes to your swimming pool you should mainly be concerned with high levels of calcium hardness. TDS is referred to in our industry a lot depending on where you get your water tested at and when someone recommends changing out the water because the levels are too high the best way to do it is with RO filtration. Instead of draining your swimming pool, we recommend RO filtration because of the following:

In the end, swimming pool owners should change out the water in their swimming pools every two years. In the Phoenix area, our water is extremely hard and will scale the water tile line, interior finish and filtration equipment if left untreated. To prolong the lifespan of your investment and swim in the best quality of water contact us today to experience RO filtration on your pool!