Clean Air Act

This site displays the the Clean Air Act as amended in 1990. To see revisions of the law since then, please refer to the U.S. Code.

Title I - Air Pollution Prevention and Control
- Part A - Air Quality and Emission Limitations (§ 101-131)
- Part B - Ozone Protection (replaced by Title VI)
- Part C - Prevention of Significant Deterioration of Air Quality (§ 160-169b)
- Part D - Plan Requirements for Nonattainment Areas (§ 171-193)
Title II - Emission Standards for Moving Sources
- Part A - Motor Vehicle Emission and Fuel Standards (§ 201-219)
- Part B - Aircraft Emission Standards (§ 231-234)
- Part C - Clean Fuel Vehicles (§ 241-250)
Title III - General (§ 301-328)
Title IV - Acid Deposition Control (§ 401-416)
Title V - Permits (§ 501-507)
Title VI - Stratospheric Ozone Protection (§ 601-618)

Full Text of the Clean Air Act as a Single Document

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Related Documents

Clean Air Act in the U.S. Code

The Clean Air Act, like other laws enacted by Congress, was incorporated into the United States Code. The House of Representatives maintains a current version of the U.S. Code, which includes amendments of the Clean Air Act enacted since 1990. To see the current provisions of the Clean Air Act, you should refer to Title 42, Chapter 85 of the U.S. Code. Section numbers are different; for example, section 101 in the Clean Air Act is equivalent to section 7401 in the U.S. Code.

The U.S. Code is available in two places:

Government Printing Office - The "official" version, with sections displayed as plain text
Cornell University Legal Information Institute - Displays sections as nicely formatted Web pages and may include more recent updates than the GPO version

Links to Regulations

Find regulations:
- by topic
- by business sector
General Information about EPA Regulatory Development
Federal Register Notices are available at Federal Register Online
EPA posts proposed and final rules at regulations.gov
Clean Air Rules of 2004
Air & Radiation Regulations and Statutes

1990 Amendments to the Clean Air Act

This is the act passed by Congress in 1990 to amend the Clean Air Act. It was the last major amendment to the Act, although there have been minor changes since then.

Plain-language description of the Clean Air Act

Plain English Guide to the Clean Air Act

History of the Clean Air Act

History of the Clean Air Act