Thank you for your question. NSF Standard 58 applies to reverse osmosis filtration systems rather than water dispensing products such as this Beverage Faucet.
"NSF/ANSI 58 establishes the minimum requirements for the certification of point-of-use (POU) reverse osmosis systems designed to reduce contaminants that may be present in public or private drinking water."
The faucet does comply with NSF Standard 61. For more information about the plumbing codes that this faucet complies with, please check the Technical Specifications:
Date published: 2017-11-03