### Question
How does the law define NAAQS?


### Answer
Under *42 U.S.C. § 7602*, **NAAQS** is defined as:

> national ambient air quality standard

#### Citation:
  - *42 U.S.C. § 7602*
  - Heading: **CHAPTER 85-AIR POLLUTION PREVENTION AND CONTROL > SUBCHAPTER III-GENERAL PROVISIONS**

