Senin, 06 Februari 2017

What Does the Environmental Protection Agency Do?

What Does the Environmental Protection Agency Do?A bill was introduced in Congress last week and referred to the House Committee on Science, Space, and Technology by Representative Gaetz from Florida to terminate the Environmental Protection Agency. If you’re thinking, but hasn’t the EPA been around for a long time?, you’re not wrong—the EPA was proposed by President Nixon in 1970 via an executive order which was later ratified by Congress. So why might Congress want to terminate an almost 50-year-old agency? Let’s look at how the EPA works and what the EPA does for those of us living in the US and for the rest of the planet.

What Is the Role of the EPA?

The stated mission of the Environmental Protection Agency is to “protect human health and the environment.” So they ensure that the living and working environments of those living in the US do not pose a significant risk to our health. They do this primarily through research into environmental conditions, through educating the public, and through making sure the federal health and environmental laws enacted by Congress are enforced effectively.

In the 1960s, pesticides like dichlorodiphenyltrichloroethane (or DDT) were widely used to protect crops from pests like insects. DDT in particular was considered a cure-all because it was toxic to a wide range of insects without seeming to cause any harm to cows or other farm mammals, it didn’t readily break down and so only required infrequent applications, and it was insoluble in water or didn’t get washed away by the rain.

However, in 1962, scientist Rachel Carson published her book Silent Spring which was a main catalyst for the movement to protect the environment and thus our own welfare. Her book grabbed the public’s attention who then put pressure on many state and local governments to enact laws regulating pollution and chemical use. After a few years of varied and disconnected attempts at regulation, it became clear that a dedicated federal agency was needed to sort through these efforts and unite them. In 1970, then President Nixon signed the National Environmental Policy Act (or NEPA) and the EPA now monitors over 100 programs that uphold a dozen major laws.

Thus, the EPA does not on its own make laws but instead is involved before and after those laws are set. Beforehand, the EPA is tasked with ensuring the lawmakers are informed by the highest quality of research. The agency is tasked with monitoring water, air, land, and human health quality and provides the vast majority of this information to the public. In order to gather a range of perspectives, as well as draw from leading researchers in the field, the EPA also awards over several billion dollars in grants and fellowships.

After laws are ratified by congress, the EPA then determines strategies for enforcing those laws fairly. The maintenance of the national standards dictated by legislation is done in cooperation with state and local governments, as well as tribal governing bodies. Not all of the EPA’s work is fines and sanctions – they also coordinate volunteer programs for industry players looking to participate in pollution prevention and environmental conservation.


What Does the EPA Do for You?

1. The EPA ensures that you have clean air to breathe. The Clean Air Act of 1970 requires that the EPA protect and improve the air quality in the US as well as protect the stratospheric ozone layer. This includes placing limitations on emissions of harmful substances, prevention of future air pollution, setting emission standards for motor vehicles and airplanes, and regulating the recycling and disposal of appliances that incorporate chlorofluorocarbons or CFCs. Without the dramatic reduction in emission of CFCs due in large part to this regulation, the hole in the ozone layer would still be growing putting more and more people at risk from the side effects of harmful ultraviolet radiation, including skin cancer.

In 1990, Congress approved the most recent major amendment to the Clean Air Act which requires a reduction in the emissions of sulfur dioxide and nitrogen oxides gases. In response, the EPA set up a cap-and-trade program to cut sulfur dioxide emissions under its Acid Rain program. Acid rain is known to change the chemical composition of soil leading to reductions in agricultural production and widespread damage to trees. Acidic water can also cause lead and copper to leach into drinking water for those who do not rely on public water supplies. Acidic water vapor in the air can also cause respiratory problems, headaches, and asthma. Even infrastructure is at risk from acid rain which speeds up the corrosion process in metal and limestone structures including cars and buildings.

The EPA also coordinates an Asbestos Program to provide resources for identifying and managing or removing asbestos which has been documented to cause serious respiratory problems.

2. The EPA ensures that you have clean water to drink and to bathe in. The Clean Water Act of 1972 makes it illegal to dump pollutants into navigable waters without a permit, and the EPA is in charge of issuing such permits through their National Pollutant Discharge Elimination System.

In 2014, Flint, Michigan, a city of over 98,000 people, had its water source changed from Lake Huron to the Flint River despite concerns of sewage and industrial waste contaminations in the river. Since the switch, repeated water boiling advisories have been issued for residents in response to reports of fecal bacteria in the water supply.  Later, potential cancer-causing byproducts of the disinfectants used to combat the bacteria were also reported. Although the EPA’s role in this crisis has been complex, in early 2015, the EPA intervened on behalf of a resident who reported dark sediment in her tap water which the EPA tested and determined to have dangerous levels of lead (over twice the level classified as hazardous waste). The EPA continues to test and monitor the water supply as many residents remain without safe tap water.

3. The EPA monitors pesticides used mainly by the agriculture industry to determine any possible adverse side effects. The Federal Environmental Pesticide Control Act of 1972 instated the classification of toxic chemicals and sets regulations for their distribution and use. To enforce the Food Quality Protection Act of 1996, the EPA is tasked with testing pesticides to determine the risks of cumulative exposure.

4. The EPA helps US consumers save money while also reducing greenhouse gas emissions. The EPA’s Energy Star program provides savings whenever you buy energy efficient appliances and has been noted as “the most successful voluntary energy efficiency movement in history.”

5. The EPA keeps the environment where you live, work, and play, free from hazardous waste. Programs managed by the EPA provide methods for the identification, disposal, and recycling of hazardous waste, as well as requirements on imports and exports.

Eliminating the EPA, its programs, and its more than 15,000 jobs would very likely put clean air and water at risk. While protective laws would still stand, the ability to enforce them would be weakened, thus making it hard for the government to keep its legal promises to the American people. Some argue that the operations and end results of the EPA and its programs are too expensive, but cutting out the EPA entirely may prove to come at an even higher environmental cost.

Until next time, this is Sabrina Stierwalt with Everyday Einstein’s Quick and Dirty Tips for helping you make sense of science. You can become a fan of Everyday Einstein on Facebook or follow me on Twitter, where I’m @QDTeinstein. If you have a question that you’d like to see on a future episode, send me an email at everydayeinstein@quickanddirtytips.com

Image courtesy of shutterstock



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