NSF 401 : 2017

1 General
2 Normative references
3 Definitions
4 Materials
5 Structural performance
6 Minimum performance requirements
7 Elective performance claims - test methods
8 Instruction and information
Annex A (informative) -
Annex B (normative) - Test method for evaluating mouth drawn
        water treatment units
Annex C (normative) - Test method for evaluating squeeze
        bottle drinking water treatment units
Annex D (normative) - Evaluation methods for systems
        with multiple technologies - treatment train
Annex E (normative) - Methods and procedures to minimize
        premature filter plugging

Gives minimum requirements for materials, design and construction, and performance of drinking water treatment systems that are designed to reduce specific emerging compounds/incidental contaminants in public or private water supplies, such as pharmaceutical, personal care products, and endocrine disrupting compounds.