high tds

HIGH TDS in your Swimming Pool

High TDS in Your Swimming Pool

What is TDS and how does high TDS affect your pool?

Total Dissolved Solids (TDS) is the sum total of all soluble substances which are dissolved in your pool water. It is well documented that 1500 ppm is around the maximum allowable limit of TDS within the water before it leads to complications for example, cloudy pool water, hard water and staining of the pools surface. Mazza Pool Inspections inspectors will take a TDS reading when inspecting your pool / spa.

With high TDS levels also comes indicators. These indicators can range from staining of the tile usually at the water line or spillway, salty taste of the water, staining of the plaster, irritation of the eyes, premature damage or corrosion / to the metal equipment, and you can even have algae with a chlorine residual of 3ppm.

Why You should Drain your pool if you have high TDS

One very simple reason is that overtime, and with the evaporation of the pool’s water, the TDS will remain in the water. Even though the water is continuously replaced and added, the water itself being added to the pool has a TDS factor, (which is combined with the TDS left within the pool).

To make matters worse…Everything that enters the pool has a level of TDS. For example, dirt, chemicals, foliage, people, cyanuric acid, chlorides, sulfates, lotions, animals, all have a TDS factor associated with it. And, with all of these elements entering the pool, it in turn causes the waters TDS level to rise. Here in California, the hardness of the water itself, or calcium hardness is the main contributor to high TDS usually the result of the owners choice of  sanitization or disinfectant methods or in other words, it’s the chemicals causing the rise in TDS.

TDS build up is going to happen, it’s inevitable.  And unfortunately, the only way to reduce the level of TDS is to drain the pool.  A complete swimming pool inspection by the Mazza Inspection Group will help you determine this level in your pool.