Question

Which of the NAAQ standards are regulated for indoor air quality in private homes

Answer 1

It is the Primary Standards of NAAQ which are regualted indoor air quality assement in private homes.

The National Ambient Air Quality Standards (NAAQS) is a part of Clean air act 1990 which require EPA to regulate certain pollutants that are common in outdoor air, considered harmful to public health and the environment, and that come from numerous and diverse sources. There are two types of national air quality standards.

Primary standards set limits to protect public health, including the health of at-risk populations such as people with pre-existing heart or lung disease (such as asthmatics), children, and older adults.

Secondary standards set limits to protect public welfare, including protection against visibility impairment, damage to animals, crops, vegetation, and buildings.

The various limits and levels can be found at https://www3.epa.gov/ttn/naaqs/