Is your water clean? You can find out here, in the database are TDS measurements from many countries.
What is TDS in water?
Total dissolved solids (TDS) are the amount of organic and inorganic materials, such as metals, minerals, salts, and ions, dissolved in a particular volume of water; TDS are essentially a measure of anything dissolved in water that is not an H2O molecule. Since it is a solvent, when water encounters soluble material, particles of the material are absorbed into the water, creating total dissolved solids. TDS in water can come from just about anywhere, including natural water springs, chemicals used to treat the municipal water supply, runoff from roads and yards, and even from your home plumbing system.
The ideal TDS level for drinking water, according to our We The People experience, is between 25-100 mg/L. Higher TDS levels can result in water that tastes salty or metallic, while lower TDS levels can result in water that lacks flavor. The taste of water with TDS levels below 150 mg is generally considered valuable for drinking, while TDS levels above 400 mg are clearly not drinkable.