Historical

NSF/ANSI 40-2012

Residential Wastewater Treatment Systems

This Standard (NSF/ANSI 40-2012) version includes the following changes. The purpose of this ballot was to harmonize the alkalinity parameters in NSF/ANSI 40 to that of NSF/ANSI 245 – Nitrogen Reduction. This change appears in 8.2.1. The purpose of this ballot was to make the language relating to failure sensing equipment in the wastewater standards consistent as well as update it regarding the testing procedure. This change appears in 5.8.

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NSF International [nsf]

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