TDS - Total Dissolved Solids
Total Dissolved Solids are the total amount of organic and inorganic substances, including salts, minerals and ions dissolved in a given volume of water. TDS is usually measured in mg/L or parts per million (ppm).
TDS is directly related to the purity of water. A significant value of the TDS shows the presence of impurities in water. It affects everyone that drinks or uses water in any way, including humans, animals, plants, and organisms.
If the water which you are drinking has high TDS value, then it might result in major health problems. In this case, you could use an RO or UF water purifier which brings the ion content present in the water to a suitable range.