What do the “OU” and “NSF” marks on the label mean?
The Orthodox Union (OU) conducts the world’s best-known kosher certification. OU certification means that Mountain Valley Spring Water may be consumed by all those who observe kosher dietary laws, as well as many others who have special dietary requirements (such as Moslems and Seventh Day Adventists). In addition to compliance with federal and state regulators, Mountain Valley Spring Company chooses to participate in the National Sanitation Foundation’s voluntary quality program. The NSF conducts annual unannounced plant inspections that cover every aspect of a bottler’s operation from the source of the water, through the disinfection and treatment processes, and the bottle closure process. The NSF also performs extensive testing for over 160 chemical, inorganic, radiological, and microbiological contaminants.
