United States environmental law The United States Environmental Protection Agency EPA is an agency of the federal government of the United States charged with protecting human health and with safeguarding the natural environment: The EPA was proposed by President Richard Nixon and began operation on 2 Decemberwhen it was passed by Congress, and signed into law by President Nixon, and has since been chiefly responsible for the environmental policy of the United States. Environmental Discrimination[ edit ] Environmental Justice is defined as "the fair treatment and meaningful involvement of all people regardless of race, color, sex, national origin, or income with respect to the development, implementation and enforcement of environmental laws, regulations, and policies" by the United States Environmental Protection Agency.
Email Almost half of the U. The five communities with the worst air pollution were all in California. Los Angeles-Long Beach topped the list with the highest ozone levels, while Fresno-Madera was found to have the most particle pollution.
Four cities ranked the cleanest in all three categories: Looking at average levels of pollutants fromandthe report found that ozone levels were higher -- likely due to warmer temperatures.
However, both year-round and short-term particle pollution were much lower than the numbers reported in The amount of ozone is "strongly related to the amount of automobile exhaust, which is related to population density," explained Edelman, a professor of preventive and internal medicine at Stony Brook University.
Climate and geography also play a role. The report estimates that more than million Americans live in areas with high levels of ozone. This puts them at risk for premature death, aggravated asthma, difficulty breathing and future cardiovascular problems, according to the report.
Particulate pollution also remains a concern even though levels have declined. The number of particles in the air are related to industrial usage, such as coal-fired power plants.
According to the report, out of 25 cities with the worst levels of year-round particle pollution, 18 cities showed lower levels than previous years -- including Los Angeles, Pittsburgh and Cincinnati, which improved to their lowest levels.
Four cities, including New York, improved overbut had reported cleaner air in the past. Five cities showed an increase in year-round particulate pollution, including San Diego, Birmingham and Phoenix.
Most cities affected by the worst short-term particle pollution also showed some improvement over previous years. According to the report, not only are millions of people at risk for possible health effects of these pollutants, including those who are prone to COPD and cardiovascular disease, but millions who live in poverty are likely to live in an area where these levels of pollutants are extremely high.
Since the passage of the Clean Air Act inthe United States has cut down on air pollutants by more than 41 percent as ofaccording to the Environmental Protection Agency.Air quality is considered satisfactory, and air pollution poses little or no risk. AQI: Moderate (51 - ) Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people .
A summary of the air quality assessment for with a comparison of the submissions carried out in the previous years (since when the Air Quality Directive came into .
The United States has made great progress since in cleaning the air, but the job is far from complete. November 15, marks a milestone in Clean Air Act history, the signing of the Amendments. These amendments set the stage for protecting the ozone layer, reducing acid rain and toxic pollutants, and improving air quality and visibility.
Jan 20, · Nine scientists in the United States, China and the United Kingdom used data from to quantify how much of the air pollution reaching the U.S. West Coast from China is . Although general public is not likely to be affected at this AQI range, people with lung disease, older adults and children are at a greater risk from exposure to ozone, whereas persons with heart and lung disease, older adults and children are at greater risk from the presence of particles in the air.
Today, pollution levels in many areas of the United States exceed national air quality standards for at least one of the six common pollutants: Although levels of particle pollution and ground-level ozone pollution are substantially lower than in the past, levels are unhealthy in numerous areas of the country.