TDS (total dissolved solids) are inorganic compounds that are found in water such as salts, heavy metals, traces of organic compounds that are dissolved in water.
Excluding the organic matters that are sometimes naturally present in water and the environment, some of these compounds or substances can be beneficial. But it can be harmful when taken more than the desired amount needed by the body.
TDS (total dissolved solids) in water are one of the main causes of turbidity and sediments in drinking water. When left unfiltered, TDS (total dissolved solids) can be the cause of various diseases, sickness, stomach aches etc..
TDS is a measure of the combined total of organic and inorganic substances contained in water. This includes anything in water other than the pure H20 molecules. These solids can be minerals, salts and organic matter that can be a general indicator of water quality.