NSF/ANSI 42-2011
It is the purpose of this Standard to establish minimum requirements for materials, design andconstruction, and performance of drinking water treatment systems that are designed to reduce specificaesthetic-related (non-health effects) contaminants in public or private water supplies. This Standard alsospecifies the minimum product literature and labeling information that a manufacturer shall supply toauthorized representatives and system owners as well as the minimum service-related obligations thatthe manufacturer shall extend to system owners.