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About This Item
Full Description
It is the purpose of this Standard to establish minimum requirements for materials, design and construction, and performance of drinking water treatment systems that are designed to reduce specific aesthetic related (nonhealth effects) contaminants in public or private water supplies. This Standard also specifies the minimum product literature and labeling information that a manufacturer shall supply to authorized representatives and system owners as well as the minimum service related obligations that the manufacturer shall extend to system owners.
1.2 Scope
The point-of-use (POU) and point-of-entry (POE) systems addressed by this Standard are designed to be used for the reduction of specific substances that may be present in drinking water (public or private) considered to be microbiologically safe and of known quality. Systems covered under this Standard are intended to address one or more of the following: reduce substances affecting the aesthetic quality of the water, add chemicals for scale control, or limit microbial growth in the system (bacteriostatic).
Substances may be soluble or particulate in nature. It is recognized that a system may be effective in controlling one or more of these substances but is not required to control all. Systems with manufacturer claims that include components or functions covered under other NSF or NSF/ANSI Standards or Criteria shall conform to the applicable requirements therein. Filter systems covered by this Standard are not intended to be used with drinking water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after the system.
Document History
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NSF/ANSI 42-2023
Drinking Water Treatment Units - Aesthetic Effects- Most Recent
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NSF/ANSI 42-2022
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF/ANSI 42-2021
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF/ANSI 42-2020
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF/ANSI 42-2019
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF 42-2018
viewing
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF 42-2017
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF 42-2016
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF 42-2015
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF 42-2014
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF 42-2013
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF 42-2012
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF 42-2011
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF 42-2010
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF 42-2009
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF 42-2007a
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF 42-2007e
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF 42-2007
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF 42-2005e
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF 42-2005
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF 42-2002e
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF 42-2002
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF 42-2001
Drinking Water Treatment Units - Aesthetic Effects- Historical Version
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NSF 42-2000a
Drinking Water Treatment Units - Aesthetic Effects- Historical Version