Total Dissolved Solids (TDS)

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Total Dissolved Solids (TDS) refers to the combined amount of all organic and inorganic substances dissolved in pool water, including minerals, salts, metals, and other dissolved chemicals. These substances come from various sources, such as pool chemicals, swimmer waste (sweat, oils), environmental debris, and water refilling. TDS is measured in parts per million (ppm). 

In general, while low TDS is less of a common problem than high TDS, it’s still important to maintain balanced levels of dissolved solids to ensure stable and safe pool conditions. Regular testing and monitoring of TDS, along with other water chemistry parameters, can help prevent issues.

If TDS levels become too high (typically above 3,000 ppm), the most common solution is to partially drain the pool and refill it with fresh water. Regular testing of TDS helps in maintaining the balance and ensures a clean, safe, and comfortable swimming environment.

Effects of High TDS:

· Salty taste

· Dull water

· Galvanic corrosion

· Chemicals become less effective

· Water balance issues