NSF/ANSI 40 is a standard for residential wastewater treatment systems with rated capacities between 400 and 1,500 gallons (1,514 and 5,678 liters) per day. We can evaluate any kind of system, regardless of treatment technology, in test facilities in the U.S., Canada and Europe.
To achieve certification, treatment systems must produce an acceptable quality of effluent during a six-month (26-week) test. Class I systems must achieve a 30-day average effluent quality of 25 mg/L CBOD5 and 30 mg/L TSS or less, and pH 6.0-9.0 spanning six months of testing. System service and maintenance are prohibited during the test period.
Document identifier
NSF 40-2018
Title
Residential Wastewater Treatment Systems
NSF Category
Wastewater Treatment Units
Publication date
2018-01-24
International Relationship
Latest version
NSF/ANSI 40-2019
History of version
NSF/ANSI 40-2019*NSF 40-2018 * NSF/ANSI 40-2019 * NSF 40-2018 * NSF 40-2013 * NSF 40-2012 * NSF 40-2010 * NSF 40-2009 * NSF 40-2005 * NSF 40-2004 * NSF 40-2000 * NSF 40-1999
| Price |
105 vnd |
NSF 40-2018
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