Water quality refers to the chemical, physical, biological, and radiological characteristics of water.[1] It is a measure of the condition of water relative to the requirements of one or more biotic species and or to any human need or purpose.[2] It is most frequently used by reference to a set of standards against which compliance can be assessed.
Lithia water is defined as a type of mineral water characterized by the presence of lithium salts (as lithium carbonate or lithium chloride).[1] Natural lithia mineral spring waters are rare and there are few commercially bottled lithia water products. An example of a noncommercial lithia water can be found in Ashland, Oregon's Lithia Park, a popular tourist attraction because of its lithia water fountain.
Mineral spas are spa resorts developed around naturally occurring mineral springs. Like seaside resorts, they are mainly used recreationally although they also figured prominently in prescientific medicine.
Drinking water, also known as potable water or improved drinking water, is water safe enough for drinking and food preparation. Globally, in 2012, 89% of people had access to water suitable for drinking.[1] Nearly 4 billion had access to tap water while another 2.3 billion had access to wells or public taps.[1] 1.8 billion people still use an unsafe drinking water source which may be contaminated by feces.[1] This can result in infectious diarrhea such as cholera and typhoid among others.[1]