NSF/ANSI 40:2022
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Residential Wastewater Treatment Systems
Hardcopy , PDF
09-11-2023
English
29-03-2022
This standard contains minimum requirements for residential wastewater treatment systems having rated treatment capacities between 1,514 LPD (400 GPD) and 5,678 LPD (1,500 GPD).
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