Most water contains some sodium which naturally leaches from rocks and soils.
An excess of sodium in water may cause a salty taste or odor, as well as presenting long-term health effects. Current drinking water standard for sodium is 20 milligrams per liter. Individuals on a low sodium diet due to high blood pressure, or other health problems, should consult their physician about drinking water on a daily basis which exceeds that level. Most Americans consume as much as ten times more salt than the body requires. Excess sodium from salt in the diet increases the risk of high blood pressure and cardiovascular disease.