Why don’t water filtration systems reduce TDS (Total Dissolved Solids)?

Question: Why don’t water filtration systems reduce TDS (Total Dissolved Solids)?

Answer: Total Dissolved Solids or TDS is the total measurement by weight of all solids that are dissolved in water. TDS is primarily made up of dissolved minerals. Two of the most important minerals found in TDS are calcium and magnesium because they provide essential nutrients for your body. These two waterborne minerals are critical to the health of your bones, teeth, heart, muscles, nervous system and also help give water its natural taste. Aquasana’s water filtration systems are designed to selectively reduce contaminants while leaving in dissolved trace minerals, such as calcium and magnesium.

The Total Dissolved Solids are not a measurement of contamination. Companies selling reverse osmosis and distillation systems often utilize tests that measure the conductivity of water. However, the results only give an estimate of TDS, which are mainly minerals. The test does not show water quality and using them in a way that implies that they do is very misleading and should be considered unethical.

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