What type of water contains vitamins in smaller amounts compared to hard water?

Soft water is characterized by its lower mineral content, particularly in terms of calcium and magnesium, which are typically found in higher concentrations in hard water. This reduction in minerals also means that soft water contains a smaller amount of certain vitamins and nutrients that are otherwise present in natural water sources.

In contrast, spring water and mineral water are often rich in minerals and may contain varying levels of added nutrients, including vitamins. Distilled water, while pure and devoid of most minerals, does not naturally contain vitamins either; its lack of minerals is due to the distillation process, which removes contaminants and minerals. Thus, soft water's lower mineral content makes it the correct choice when considering the comparison of vitamin content to hard water.