Which type of water is not typically classified as one of the four main types of water?

Mineral water is a type of water that is characterized by the presence of various minerals and trace elements, which are naturally occurring in the water. It is often sourced from underground springs and is bottled for consumer use. While mineral water is popular and widely consumed, it is generally classified alongside other types of water based on its mineral content and origin.

Well water, bottled water, and distilled water represent distinct categories based on their source, treatment, and properties. Well water comes from underground aquifers and is typically used directly from the ground. Bottled water encompasses a broad range of water types that are packaged for sale, including spring and purified water. Distilled water is created through a purification process that involves boiling water and condensing the steam back into a liquid, thereby removing impurities and minerals.

In the context of water classification, mineral water does not usually fall into the same basic categories recognized for the four main types of water, which include well water, bottled water, and distilled water. This distinction sets mineral water apart as a specialty category rather than a primary type of water in the overall classification system.