Hard water has dissolved minerals like calcium and magnesium, that collects as water travels through the ground & waterways.
Soft water is treated, so it contains meager amounts. However, it is higher in sodium since that’s what used to treat soft water. How much sodium is used depends on the initial hardness.
While hard water has essential nutrients that’s makes its good for drinking, it can wreak havoc on your plumbing. Not only that, it’ll leave residue on skin, hair, and clothes.
Because of that, softer water is preferred for household chores and home maintenance.