Clean Air Act (United States)
1963 United States federal law to control air pollution / From Wikipedia, the free encyclopedia
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The Clean Air Act (CAA) is the United States' primary federal air quality law, intended to reduce and control air pollution nationwide. Initially enacted in 1963 and amended many times since, it is one of the United States' first and most influential modern environmental laws.
Long title | An Act to improve, strengthen, and accelerate programs for the prevention and abatement of air pollution, as amended. |
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Acronyms (colloquial) | CAA |
Codification | |
U.S.C. sections created | 42 U.S.C. ch. 85 (§§ 7401-7671q) |
Major amendments | |
Clean Air Act of 1963 (77 Stat. 392, Pub. L.Tooltip Public Law (United States) 88–206) Motor Vehicle Air Pollution Control Act of 1965 (79 Stat. 992, Pub. L.Tooltip Public Law (United States) 89–272) Air Quality Act of 1967 (81 Stat. 485, Pub. L.Tooltip Public Law (United States) 90–148) Clean Air Amendments of 1970 (84 Stat. 1676, Pub. L.Tooltip Public Law (United States) 91–604) Clean Air Act Amendments of 1977 (91 Stat. 685, Pub. L.Tooltip Public Law (United States) 95–95) Clean Air Act Amendments of 1990 (104 Stat. 2468, Pub. L.Tooltip Public Law (United States) 101–549) Inflation Reduction Act (136 Stat. 2063, Pub. L.Tooltip Public Law (United States) 117–169 (text) (PDF)) | |
United States Supreme Court cases | |
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As with many other major U.S. federal environmental statutes, the Clean Air Act is administered by the U.S. Environmental Protection Agency (EPA), in coordination with state, local, and tribal governments.[1]: 2–3 EPA develops extensive administrative regulations to carry out the law's mandates. Associated regulatory programs, which are often technical and complex, implement these regulations. Among the most important, the National Ambient Air Quality Standards program sets standards for concentrations of certain pollutants in outdoor air, and the National Emissions Standards for Hazardous Air Pollutants program which sets standards for emissions of particular hazardous pollutants from specific sources. Other programs create requirements for vehicle fuels, industrial facilities, and other technologies and activities that impact air quality. Newer programs tackle specific problems, including acid rain, ozone layer protection, and climate change.
The CAA has been challenged in court many times, both by environmental groups seeking more stringent enforcement and by states and utilities seeking greater leeway in regulation.
Although its exact benefits depend on what is counted, the Clean Air Act has substantially reduced air pollution and improved US air quality—benefits which EPA credits with saving trillions of dollars and many thousands of lives each year.