Jun 5, 2025 · This page provides a brief introduction to the Clean Air Act, links to more detailed information on the law's requirements, and links to information on its history.

Dec 9, 2025 · Clean Air Act (CAA) is a U.S. federal law, passed in 1970 and later amended, to prevent air pollution and thereby protect the ozone layer and promote public health.

Federal legislation addressing air pollution was first passed in 1955, prior to which air pollution was the exclusive responsibility of state and local levels of government. The federal role was strengthened in …

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 …

1970: Congress passes the Clean Air Act, allowing the newly created U.S. Environmental Protection Agency (EPA) to set national air quality standards. Congress also allowed states to establish their …

Oct 10, 2025 · It was passed in 1970 and later amended in 1977 and 1990. The Act gives the Environmental Protection Agency (EPA) the authority to set and enforce national air quality …

After completion of this course, learners will be able to generally describe the impact of air quality legislation in the United States.

Oct 22, 2025 · This page describes how the Clean Air Act and its subsequent amendments in 1977 and 1990 evolved from the Air Pollution Control Act on 1955

The Clean Air Act was first passed in 1963, but significant amendments occurred in 1970, 1977, and 1990, expanding its scope and regulatory power. The Act mandates that states develop State …

Jul 1, 2025 · The Clean Air Act was created to combat escalating air pollution that posed a severe threat to public health and environmental well-being, empowering the federal government to regulate …