High levels of total dissolved solids (TDS) may reveal the possible presence of toxic substances such as lead, arsenic, nitrate and more nasty stuff.
It can also lead to water tasting salty, bitter or metallic. Water containing high amounts of calcium and magnesium, for example, can discolor plates and glasses as well as cause damage to dishwashers, washing machines and coffee makers.To read more, please go to our page about water purification for dishwashers.