Introduction The Clean Air Act (CAA) is a legislation that pertain elimination or minimizing air pollution in the United States. The atmosphere determines almost every aspect of human beings and other organisms. Pollution with substances such as carbon monoxide, CFCs and Nitrogen Oxides has had detrimental effects on the air that maintains the life of people and therefore should be a matter of concern for not only to the government but also the individual efforts. It is through the Clean Air Act that the issue of air pollution has been politically addressed at a national and international level. The enforcement has positive outcomes especially concerning matters of people’s health. Several models are employed to determine the effect of the increased quality of air to the environment and the population at large. The federal law states the responsibilities that Environmental Protection Agency (EPA) bears in relation to enhancing the lives of the public through improving the environment. The Act maintains regulatory requirements which have to be kept vigilant for its compliance. It accomplishes this through consultants and legal, personnel who are aware of the provisions and the enforcement regulations. This paper is aimed at discussing the Clean Air Act, its essence, historical background, implementation strategies, its regulations and the future prospects (Belden, 2001). The Statutes of the CAA The CAA which is coded as 42 U.S.C. 7401 et seq and aims at safeguarding the public health and environmental protection by controlling pollutants of the atmospheric air. Through the EPA, the CAA states the standards and enforces compliance through the states. The regions that are not up to the standards or the “ nonattainment areas” have to establish control strategies that are stipulated by the CAA. It is the role of CAA to determine the origin of toxic pollutants as well as the ones responsible for the acid rain. By providing a permit for the origin of air pollutants it helps curb air pollution thus ensuring the atmosphere is protected and also in maintaining the state of clean air for areas with no pollution. The federal law attains the objective through data collection, comprehensive research, as well as collaborating with the local authorities. The 1970 amendment of the CAA emphasized the role of EPA in maintaining air purity through scientific as well as technological applications. It stated the decrement of automobile pollutants by 90% up to nineteen seventy five. In addition an EPA program was created that ensured technological control of origin of the emerging main hazardous substances. Also a regulation program was created to deal with air pollutants and its implementation through the Federal Enforcement Authority . EPA was funded greatly by the federal government and that maintained its continuity In nineteen seventy seven, the amendment of the CAA reset the standards, prolonged deadlines to comply with the standards and established a program named the Prevention of Significant Deterioration (PSD) . The CAA amendment of nineteen ninety set various programs to ensure clean air via FY1998 and established detailed provisions (Lipton, 2006). CAA Historical Perspective Initially, CAA was enacted in July nineteen fifty five led by President Eisenhower but since then it has undergone several changes. Its provisions aimed at funding the United States surgeon General aiding in research for the regulations