Greta Jimenez
Pollution has been a problem since the emergence of our earliest ancestors, but the modern fight against pollution began in the 19th century as cities became more populated and industrialised. In the US, the Clean Air Act of 1970 was the first federal legislation to address air pollution, while the Clean Water Act of 1972 was enacted to improve sewage treatment plants and limit industrial discharges into the water. Since then, clean air and water legislation has been revised and strengthened, with the EPA playing a key role in enforcing pollution control strategies and standards. Despite progress, pollution remains a challenge, with the EPA facing criticism for its slow pace in addressing contaminated sites under the Superfund program.
| Characteristics | Values |
|---|---|
| Pollution is not a new phenomenon | Pollution has been a problem since the appearance of our earliest ancestors |
| Sanitation and disease | Improved sanitary conditions and less disease were important factors in making cities healthier places to live |
| Industrial pollution | As cities became more populated in the 19th century, cities across Europe and the US experienced industrial waste pollution |
| Air pollution | Air pollution from automobiles, industrial processes, and the burning of coal in factories and homes has been a serious problem |
| Smog | In the 19th century, smog episodes in cities like New York and London resulted in many deaths |
| Water pollution | In 1936, the Cuyahoga River in Cleveland, Ohio, caught fire due to pollution, leading to the creation of the Federal Water Pollution Control Act (1972) |
| Air quality legislation | The Air Pollution Control Act of 1955 was the first federal attempt to control air pollution, followed by the Clean Air Act of 1970 and its amendments |
| Clean Air Act impact | Since 1990, fine particulate matter pollution has declined by 39%, ozone pollution by 18%, and dramatic improvements in air quality |
| EPA initiatives | The EPA has issued emissions standards for various sources, including chemical plants and vehicles, to reduce toxic air pollution |
| Superfund sites | The federal Superfund program addresses the cleanup of highly contaminated sites across the US |
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What You'll Learn
The Clean Air Act of 1970
The 1970 Clean Air Act (CAA) authorized the development and enforcement of comprehensive federal and state regulations to limit emissions from both stationary (industrial) and mobile sources. This marked a shift in responsibility, as prior to 1970, the federal government did not have primary authority for developing air quality standards.
The Act led to the establishment of several major regulatory programs:
- National Ambient Air Quality Standards (NAAQS): These standards set acceptable levels for specific air pollutants in outdoor air, including ground-level ozone, carbon monoxide, particulate matter, lead, sulfur dioxide, and nitrogen dioxide. The goal was to achieve these standards in every state by 1975 to protect public health and welfare.
- State Implementation Plans (SIPs): States were required to develop plans outlining how they would meet the new national air quality standards by 1977. This recognized the importance of local understanding of conditions like geography, industrial activity, and transportation patterns.
- New Source Performance Standards (NSPS): These standards aimed to regulate emissions from new sources, ensuring they incorporated the best available pollution control technology.
- National Emission Standards for Hazardous Air Pollutants (NESHAPs): This program set standards to limit emissions of hazardous air pollutants.
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Clean Water Act
Pollution has been a problem since the emergence of our earliest ancestors. As human populations increased, so did the risk of disease from bacteria and waste. During the Middle Ages, for example, diseases such as cholera and typhoid fever were rampant in Europe, directly caused by unsanitary living conditions.
In the 19th century, the Industrial Revolution brought about a new kind of pollution, with waste from factories and industries contaminating cities across Europe and the United States. This trend continued into the 20th century, with air pollution from automobiles, industrial processes, and coal-burning becoming a serious problem.
The Clean Water Act is a key piece of legislation in the history of the United States' environmental regulations. It originated from the Federal Water Pollution Control Act of 1948, which was the first major law to address water pollution. The 1948 Act was passed in response to the massive growth and expansion after World War II, which saw waterways across the US impacted by industrial and urban pollution. However, the 1948 Act only protected interstate waterways, and many argued that it was too weak.
In 1972, amendments were added to the 1948 Act, giving shape to today's Clean Water Act. These amendments were driven by growing public awareness and concern for controlling water pollution, particularly after the 1969 Cuyahoga River fire, which saw the river in Cleveland, Ohio, catch fire due to pollution. The Clean Water Act established the basic structure for regulating pollutant discharges into US waters, giving the Environmental Protection Agency (EPA) the authority to implement pollution control programs and set wastewater standards for industries. It also maintained requirements to set water quality standards for all contaminants in surface waters and made it unlawful for any person to discharge pollutants from a point source into navigable waters without a permit.
The Clean Water Act has been further amended over the years, with laws such as the Great Lakes Critical Programs Act of 1990 implementing parts of the Great Lakes Water Quality Agreement of 1978, which aimed to reduce certain toxic pollutants in the Great Lakes.
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EPA's pollution control strategies
The US Environmental Protection Agency (EPA) has implemented various strategies to combat pollution and improve air quality.
One of the EPA's key strategies is the Clean Air Act, which has been amended over the years to strengthen it. The Act has set national emission standards and required states to implement their own emission control measures. This has contributed to significant improvements in air quality, with reductions in pollutants such as carbon monoxide, lead, nitrogen dioxide, and sulfur dioxide. The Clean Air Act has also addressed issues like acid rain, ozone depletion, and climate change.
Another strategy is the promotion of clean technologies and innovation. The EPA has encouraged the use of state-of-the-art emission control technologies in vehicles, power plants, and industrial facilities. This includes the development and use of catalytic converters, which drastically reduce hydrocarbon, carbon monoxide, and nitrogen oxide emissions. The EPA also provides resources like the Clean Air Technology Center, which offers information on air pollution prevention and control technologies.
The EPA has also focused on controlling toxic emissions from major sources, such as chemical plants and oil refineries. They have issued emissions standards for these sources and worked with states to enforce these standards. Additionally, the EPA has taken steps to reduce emissions from non-road engines used in construction, agriculture, and marine vessels by requiring cleaner engine technologies and fuels.
Furthermore, the EPA has addressed stationary sources of air pollution by requiring new industrial facilities to incorporate good pollution control measures into their designs. This ensures that as new facilities are built, the overall industrial base becomes cleaner. The EPA has also mandated that new and modified large plants and factories in areas not meeting air quality standards must achieve the lowest achievable emission rates and obtain offsetting emissions reductions from other sources.
The EPA's strategies have resulted in significant health benefits, preventing early deaths and reducing air-pollution-related illnesses, thereby improving economic welfare and growth rates.
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Superfund cleanups
Pollution has been a problem for centuries, with industrialisation in the 19th century causing a new kind of pollution from waste produced by industries and factories. In the 20th century, air pollution from automobiles, industrial processes and coal burning became a serious issue, leading to the creation of the Air Pollution Control Act of 1955, the first federal attempt to control air pollution. The Clean Water Act of 1972 was a response to the Cuyahoga River fire of 1969, which finally prompted the nation to take action against water pollution.
The Superfund program is a United States federal environmental remediation program established by the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA). The program is administered by the Environmental Protection Agency (EPA) and is designed to fund the investigation and cleanup of sites contaminated with hazardous substances. Sites managed under this program are referred to as Superfund sites.
The EPA identifies the parties responsible for hazardous substances being released into the environment and either compels them to clean up the site or undertakes the cleanup itself, using the Superfund (a trust fund) to pay for it. The polluters are then required to refund the cost of the cleanup. The EPA and state agencies use the Hazard Ranking System (HRS) to calculate a site score based on the actual or potential release of hazardous substances. A score of 28.5 places a site on the National Priorities List (NPL), making it eligible for long-term remedial action (cleanup) under the Superfund program.
The Superfund Amendments and Reauthorization Act of 1986 (SARA) added minimum cleanup requirements and stated that most cleanup agreements with polluters must be entered in federal court as a consent decree subject to public comment. In 1994, President Bill Clinton issued Executive Order 12898, which called for federal agencies to make achieving environmental justice a requirement by addressing the adverse health and environmental effects experienced by low-income and minority populations.
Through the 1980s, most of the funding for the Superfund program came from an excise tax on petroleum and chemical manufacturers. However, in 1995, Congress chose not to renew this tax, shifting the burden of the cost to taxpayers. Despite this, the program has suffered from underfunding, and by 2014, Superfund NPL cleanups had decreased to only 8 sites out of over 1,200. In November 2021, the Infrastructure Investment and Jobs Act reauthorized an excise tax on chemical manufacturers for ten years, starting in July 2022.
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Clean air legislation
The Clean Air Act of 1963 was the first federal legislation to permit the US federal government to take direct action to control air pollution. It encouraged cooperative state, local, and federal action to reduce air pollution and authorized the Secretary of Health, Education, and Welfare to take action against interstate air pollution. The Motor Vehicle Air Pollution Control Act amended the 1963 Clean Air Act, setting the first federal vehicle emissions standards.
The Clean Air Act of 1970 marked a significant shift in the federal government's role in air pollution control. This legislation authorized the development of comprehensive federal and state regulations to limit emissions from both stationary (industrial) and mobile sources. Four major regulatory programs affecting stationary sources were initiated: the National Ambient Air Quality Standards (NAAQS), State Implementation Plans (SIPs), New Source Performance Standards (NSPS), and National Emission Standards for Hazardous Air Pollutants (NESHAPs). The Clean Air Act of 1970 was enacted at a time when dense, visible smog was prevalent in many US cities and industrial centers, prompting the need for legislative action.
Subsequent major revisions to the Clean Air Act were made in 1977 and 1990 to improve its effectiveness and address emerging air pollution problems. The 1990 amendments substantially increased the authority and responsibility of the federal government, including the creation of new regulatory programs to control acid deposition (acid rain) and the issuance of permits for stationary sources of pollution. These amendments also expanded the NESHAPs program to better control toxic air pollutants and modified the provisions for attaining and maintaining NAAQS.
The Clean Air Act has led to dramatic reductions in air pollution and improvements in air quality. EPA emissions standards have successfully reduced toxic emissions from major sources, and state implementation of the Act has contributed to air quality improvements. As a result, many areas of the country have met national air quality standards, and pollution reductions have prevented hundreds of thousands of early deaths and serious health effects each year.
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Frequently asked questions
The Air Pollution Control Act of 1955 was the first federal attempt to control air pollution.
The Clean Air Act of 1970 was the first legislation to address air pollution and allocate federal funding for research. The EPA's original mission was to clean up America.
The Federal Water Pollution Control Act of 1972, commonly called the Clean Water Act, was the first major water pollution cleanup program.
In the late 1970s, the Superfund program was created to pay for the cleanup of contaminated sites.
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