Types of Total Dissolved Solids in Water
Now you know the total dissolved solids definition, let’s take a look at the types of TDS you might find in your water. There are hundreds of types of TDS, but they generally fall into four categories: minerals, salts, dissolved metals, and other organic matter.
Minerals such as magnesium, calcium and potassium get into water from natural sources. When water in rivers, streams and lakes come into contact with mineral-rich rocks, small amounts of these minerals are released into the water. Minerals improve water’s taste and contribute towards your daily RDI.
Low levels of salts may occur naturally in groundwater. Salt levels may also be affected by human activity, such as de-icing roads, fertilizer and water softener use, and even sewage contamination.
Dissolved metals mainly make their way into water through pollution. Industrial waste and human activities such as mining, can both result in the leaching of metals into drinking water. Rock or soil material may contain small amounts of metals, and some types of metal pipes can also contribute to water’s dissolved metal content.
Dissolved organic matter usually enters into water as a result of the natural decomposition of algae and plant material. In municipal applications, the majority of natural organic matter is removed from water during the treatment process