Even just 1 teaspoon of salt could be more than your recommended daily sodium intake. Click for more facts about salt: http://www.everydayhealth.com/diet-and-nutrition-pictures/need-to-know-facts-about-salt.aspx
The average American uses up to 168 liters of water per day. We do this by doing normal things like showering, washing dishes, flushing toilets, using the washing machine, etc. A large percent of the domestic water use comes from flushing toilets and using the washing machine.
Most of the sodium in your diet comes from foods you might not think of as salty, including bread. Yeast bread contributes 7 percent of the sodium in a typical American’s diet, according to the “Dietary Guidelines for Americans 2010.” Just two slices of bread on a sandwich may account for as much as one-fourth of your recommended daily sodium intake.