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Clean Air Act Timeline

1977 Reduction of Emission

1970 Clean Air Act Begins

  • Amended because many states failed to meet the required targets of air quality
  • Led to dramatic improvements in the quality of the air we breathe
  • Protects public health and the economy
  • Established national air quality standards
  • Lowered levels of many common and toxic pollutants (i.e. carbon monoxide, nitrogen and sulfur dioxide)

2017

2015

1990

2015 Clean Air Act

1977

1970

  • National Emissions of common pollutants alone dropped an average of 70% while gross domestic products grew by 246%

1990

  • Concentration of air pollutants improved
  • 84% - carbon monoxide
  • 67% - sulfur dioxide
  • 85% - lead
  • 60% - hydrogen dioxide
  • 3% - ozone
  • Original Act was amended and additional amendments include
  • Acid Rain
  • Compliance Methods
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