NSF/ANSI 40 : 2019
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Residential Wastewater Treatment Systems
Hardcopy , PDF
08-20-2021
English
10-01-2019
This Standard contains minimum requirements for residential wastewater treatment systems having rated treatment capacities between 1,514 L per day (400 gal per day) and 5,678 L per day (1,500 gal per day).
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