Kiera Jefferson
Oil companies have long been associated with environmental pollution. From oil spills that contaminate soil and water to the release of air pollutants during production and distribution, the impact of oil companies on the environment is significant. While technological advancements have helped to reduce the environmental impact of oil exploration and drilling, the industry remains a major contributor to climate change and environmental degradation. Oil companies have also been accused of delaying action and perpetuating the climate crisis by accelerating the extraction of fossil fuels. The pollution caused by oil companies has led to negative consequences for both natural environments and human health, with air and water pollution being the most common forms.
| Characteristics | Values |
|---|---|
| Oil spills | Oil spills contaminate soil and water and may cause devastating explosions and fires. |
| Oil drilling | Drilling projects operate around the clock, generating pollution, fueling climate change, disrupting wildlife, and damaging public lands. |
| Air pollution | Burning oil and natural gas releases air pollutants such as sulfur dioxide, mercury compounds, and nitrogen oxides. |
| Water pollution | Hydraulic fracturing uses large amounts of water and produces wastewater containing chemicals and contaminants, affecting aquatic habitats and water availability. |
| Greenhouse gas emissions | The oil and gas industry is a significant source of methane emissions, with a global warming potential over 25 times that of carbon dioxide. |
| Health impacts | Exposure to ozone formed from volatile organic compound emissions is linked to aggravated asthma and increased hospital admissions. |
| Environmental damage | Oil exploration and drilling disturb land and marine ecosystems, harm wildlife, and impact wildlands and communities. |
| Climate impact | Fossil fuel companies are responsible for perpetuating the climate crisis by accelerating the extraction and use of oil, gas, and coal. |
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What You'll Learn
Oil spills
Cleanup activities can never remove 100% of the spilled oil, and scientists must be careful that their actions do not cause additional harm. After the Exxon Valdez oil spill in 1989, it was found that the high-pressure, hot-water hoses used to clean up beaches caused more damage than the oil alone. The Oil Pollution Act of 1990 established that those responsible for oil spills can be held accountable for paying for cleanup and restoration.
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Air pollution
The oil and gas industry is a significant contributor to air pollution, which has adverse impacts on human health and the environment. The production, processing, and use of oil and gas emit various greenhouse gases, with methane being the most common. Methane has a global warming potential more than 25 times that of carbon dioxide, and it is released during the extraction, transportation, and refining of oil and gas. Other pollutants emitted during the burning of oil include sulfur dioxide, mercury compounds, and nitrogen oxides. On average, 12 pounds of sulfur dioxide and 4 pounds of nitrogen oxides are emitted per megawatt-hour of electricity generated from burning oil.
Oil and gas companies need to increase their emission control strategies to meet the changing demands and reduce their environmental impact. Leaks, flames, and excessive emissions from refineries release dangerous air pollutants that are known or suspected to cause cancer and congenital disabilities. Leaky valves and pumps also contribute to fugitive VOC emissions. To reduce these emissions, continuous monitoring is required, and low-cost air sensors can be utilized.
The health impacts of oil and gas pollution are significant. A study by the University of North Carolina Institute for the Environment (UNC-IE) found that air pollution from the oil and gas sector in the United States led to substantial adverse effects on air quality, human health, and health costs. The five states with the highest impacts from oil and gas pollution were Texas, Pennsylvania, Ohio, Oklahoma, and Louisiana, which are all states with significant oil and gas activity. However, the health impacts of oil and gas pollution can cross state boundaries, affecting populations far from the extraction sites.
Moreover, exposure to ozone, a byproduct of volatile organic compounds (VOCs) emitted by the oil and gas industry, has been linked to aggravated asthma, increased emergency room visits, and hospital admissions. Additionally, pollutants such as benzene and formaldehyde, detected near oil and gas wells, are known carcinogens. Particulate matter released by dust, exhaust, and other air emissions can also lodge in the lungs, leading to potential health problems.
To mitigate the air pollution caused by the oil and gas industry, a transition to clean energy sources is necessary. Reducing emissions from the oil and gas sector will not only improve public health but also contribute to climate change mitigation through methane reduction. Strategies that focus on end-of-pipe pollution controls are important but only address part of the problem. Instead, a comprehensive approach that considers the full life cycle of oil and gas, from production to consumption, is needed to effectively protect public health and the environment.
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Water pollution
Oil companies are responsible for significant water pollution, which can occur at any stage of production or use. Oil refineries release billions of pounds of pollution into waterways annually, and this pollution disproportionately affects people of colour. The pollution includes heavy metals, nitrogen, and other compounds that can kill aquatic animals, promote harmful algae growth, and make waterways unsafe for humans for activities like fishing, swimming, or even touching the water.
Oil spills are a major contributor to water pollution. When oil spills into the ocean, it can harm sea creatures, ruin beaches, and make seafood unsafe to eat. Oil spills can occur during transportation, such as from pipes, ships, trucks, or trains, or from oil field operations and drilling accidents. For example, the Deepwater Horizon drilling rig explosion in the Gulf of America in 2010 caused an oil spill that severely impacted the region. Oil spills can also occur naturally, with about 200 natural underwater oil seeps identified globally, releasing thousands of litres of crude oil daily.
In addition to spills, water pollution can result from routine maintenance activities, such as bilge pumping on ships. Each discharge of bilge, a mixture of oil and water, is small, but thousands of releases can add up to a large amount of pollution. Oil pollution can also enter water sources through runoff, especially from asphalt, and through storm drains, which often carry oil, paint, hazardous chemicals, and other contaminants into oceans, rivers, and lakes without further treatment.
The production and use of oil can also lead to water pollution. Hydraulic fracturing, or fracking, uses large amounts of water and potentially hazardous chemicals, generating significant amounts of wastewater that may contain dissolved chemicals and other contaminants. This wastewater requires treatment before disposal or reuse, and improper disposal can contaminate water sources. Additionally, condensate tanks used in natural gas production can emit pollutants, and diesel-powered and gasoline engines used in drilling can release nitrogen oxides and carbon monoxide.
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Fracking
In addition to water pollution, fracking contributes to air pollution through the release of hazardous air pollutants (HAPs) and greenhouse gases, with potential adverse health effects, particularly in older adults and children. A 2022 study found that children born near fracking sites have a higher risk of leukemia. Fracking also strains local infrastructure and services, with the truck traffic needed to deliver water to a single well causing as much damage to roads as nearly 3.5 million car trips.
Despite these concerns, the fracking boom continues, with oil and gas companies benefiting from exemptions or limitations in regulatory coverage. However, some states, such as New York, Maryland, and Vermont, have banned fracking, while others like California and Colorado are taking steps towards increased oversight.
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Climate change
Despite the scientific consensus on climate change, oil companies have historically denied and spread disinformation about the issue to avoid government regulation and protect their profits. This has included funding climate science denial and employing subtle lobbying and propaganda tactics to undermine public concern and delay action. For example, ExxonMobil has been accused of misleading the public by expressing doubt about climate science while acknowledging the risks of climate change in private. Oil companies have also shifted the responsibility for climate change mitigation onto individuals through marketing campaigns, such as BP's "Beyond Petroleum" initiative, which focused on individual consumption and greenhouse gas emissions rather than the industry's production and consumption practices.
In recent years, some oil companies have started to invest in renewable energy and carbon capture and storage technologies. For instance, Shell established a renewables arm in 2015 with a $1.7 billion investment, while BP and Chevron are also investing in carbon capture projects. However, critics argue that these efforts are insufficient and do not address the core issue of reducing fossil fuel extraction and consumption. Additionally, oil companies' continued pursuit of new drilling projects and opposition to energy reform demonstrate a commitment to business-as-usual practices that contribute to climate change.
The influence of the oil industry on government policies and public perception cannot be understated. Oil companies have significant political lobbying power and have successfully stalled or blocked energy reforms and environmental policies. They have also shaped the narrative around climate change, framing it as a risk rather than a reality and emphasizing reliable and affordable energy over the need for systemic change. This has resulted in political inertia and a continued reliance on fossil fuels, hindering progress towards a clean energy economy.
To effectively address climate change, it is crucial to recognize the role of oil companies in driving the crisis and holding them accountable for their emissions and disinformation campaigns. While individual action is important, systemic change is necessary to reduce global greenhouse gas emissions and mitigate the worst impacts of climate change. This includes transitioning to renewable energy sources, regulating fossil fuel production, and ensuring that oil companies contribute to climate solutions rather than impeding progress.
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Frequently asked questions
Oil and gas companies are a significant source of emissions of methane, a potent greenhouse gas with a global warming potential more than 25 times that of carbon dioxide. They are also the largest industrial source of emissions of volatile organic compounds (VOCs), which contribute to the formation of ground-level ozone (smog). When oil is burned for electricity, it emits pollutants such as sulfur dioxide, mercury compounds, and nitrogen oxides. On average, 12 pounds of sulfur dioxide and four pounds of nitrogen oxides are emitted per megawatt-hour of electricity generated from burning oil.
Oil spills, which commonly occur during transportation via pipes, ships, trucks, or trains, contaminate soil and water and can cause devastating explosions and fires. Oil spills can have major impacts on recreational beaches, shoreline vegetation, and ocean ecosystems. While satellites and other technologies have been used to detect and clean up spills, it is difficult to remove 100% of the spilled oil, and cleanup activities can sometimes cause additional harm.
Drilling for oil often requires clearing an area of vegetation and can disturb land and marine ecosystems. The loud noises, human movement, and vehicle traffic from drilling operations can disrupt wildlife communication, breeding, and nesting, and power lines, well pads, fences, and roads can fragment habitats.
According to a 2017 report, more than 50% of global industrial emissions since 1988 can be traced to just 25 companies, and 100 companies have been the source of over 70% of global emissions. While some oil and gas companies have started investing in renewable energy and carbon capture projects, they still face criticism for not doing enough to reduce emissions and transition to cleaner energy sources.
