Bronte Wells
Detroit, Michigan, is known for its poor air quality, with the Detroit metro area ranking 13th worst in the US for annual particle pollution. Southwest Detroit, in particular, is battling some of the highest levels of air pollution in the country, with residents suffering from high rates of asthma, cancer, respiratory illness, and cardiovascular disease. The pollution in Detroit comes from various sources, including industrial factories, power plants, traffic, and the Detroit River, which has historically received untreated waste discharges from industrial use and urban development. Climate change is also a contributing factor, increasing the likelihood of air pollution episodes.
| Characteristics | Values |
|---|---|
| Air Pollutants | PM2.5, NO2, SO2, O3 |
| Health Impact | Asthma, cancer, respiratory illness, cardiovascular diseases, kidney failure, premature deaths |
| Sources of Air Pollution | Traffic, industrial sources, power plants, truck traffic |
| Worst Affected Areas | Southwest Detroit, Delray neighborhood |
| Major Corporate Polluters | U.S. Steel, Marathon Petroleum Refinery |
| Water Pollutants | Bacteria, PCBs, polycyclic aromatic hydrocarbons, metals, oils, greases |
| Water Source | Detroit River |
| EPA Standard Limit for PM2.5 | 12 micrograms per cubic meter |
| Current PM2.5 Levels in Detroit | 8 to 11 micrograms per cubic meter |
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What You'll Learn
Industrial factories
Detroit's industrial history is well-known, with the auto and steel industries making it a symbol of the US's domestic mass-production prowess. However, this has come at a cost, with industrial pollution becoming an enduring issue for the city. Detroit's air quality is often ranked among the worst in Michigan, and the state's heaviest emitters of sulfur dioxide and nitrous oxide are clustered around Boynton in Southwest Detroit. These pollutants irritate the lungs and lead to respiratory issues and other health problems. The southwest section of the city also experiences high levels of nitrogen dioxide and volatile organic compounds due to heavy industrial and transportation activity.
Detroit's industrial pollution has disproportionately impacted communities of colour and low-income neighbourhoods. Systemic racism, limited financial resources, and low educational attainment have made these communities vulnerable to exploitation, with manufacturers spewing toxins into their surroundings with little accountability. The residential population of Southwest Detroit is largely comprised of racial minorities and people with lower incomes, who lack the political connections and economic resources to lobby against corporate polluters. As a result, their health suffers due to the pollution, and their housing values decrease, making it difficult to move elsewhere.
The auto and steel industries have contributed significantly to Detroit's industrial pollution. Companies like Ford and General Motors, along with various heavy industries, have released industrial carbon emissions that affect the city's atmosphere. Steel plants' use of blast furnaces, which burn coal, coke, and lime, has made the global steel industry responsible for a significant portion of world carbon emissions. Additionally, the Detroit River, which provides water for various industries, has experienced pollution from untreated waste discharges, urban development, and stormwater runoff, leading to high levels of bacteria, PCBs, polycyclic aromatic hydrocarbons, metals, oils, and greases.
Efforts are being made to address Detroit's industrial pollution and improve air quality. The University of Michigan School of Public Health is conducting research to identify major sources of emissions and develop solutions. The gradual electrification of the vehicle fleet and the replacement of fossil fuel power plants with wind and solar energy sources are also being considered. Additionally, the EPA and local organisations are working on remediation projects to clean up contaminated sites and restore habitats along the Detroit River.
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Traffic
Detroit, like many cities, faces significant pollution challenges due to traffic. The city's road infrastructure and transportation patterns contribute to this issue.
Detroit's extensive freeway system, which includes major highways such as I-75, I-94, and I-96, plays a significant role in regional and interstate trade. While these freeways facilitate the movement of goods and people, they also contribute to high traffic volumes within the city. The constant flow of vehicles, particularly during peak hours, leads to congestion and increased traffic density. This congestion has been identified as a primary source of air pollution in Detroit. Idling vehicles emit significant amounts of pollutants, including nitrogen oxides (NOx), volatile organic compounds (VOCs), and particulate matter (PM).
The heavy reliance on personal vehicles in Detroit exacerbates the problem. Despite efforts to improve public transportation, Detroit still has a high rate of car ownership and a low public transit usage rate. This contributes to a higher number of vehicles on the road, particularly during commuting hours. In addition, the city's sprawling urban development pattern, characterized by low-density suburbs and a lack of walkability, encourages car dependency. This results in longer trips and increased vehicle miles travelled (VMT), further adding to the pollution levels.
Detroit's proximity to Canada also contributes to border-related traffic pollution. The Detroit-Windsor border crossing is one of the busiest land ports of entry in North America, accommodating a significant volume of commercial and passenger vehicles. The idling and queuing of vehicles at the border, particularly during peak times, releases substantial amounts of pollutants into the air, impacting the surrounding areas.
Moreover, the aging vehicle fleet in Detroit is a concern. Older vehicles tend to be less fuel-efficient and emit higher levels of pollutants compared to newer models. The presence of heavy-duty vehicles, such as trucks and buses, also contributes to the problem. These vehicles, often used for freight transportation and public transit, tend to emit larger quantities of pollutants due to their larger engines and higher fuel consumption.
To address traffic-related pollution in Detroit, a multifaceted approach is necessary. This includes promoting public transportation and active travel options, such as walking and cycling, to reduce car dependency. Improving fuel efficiency and encouraging the adoption of electric or alternative-fuel vehicles can also significantly reduce emissions. Additionally, implementing congestion-reducing measures, such as road improvements and intelligent traffic management systems, can help ease traffic flow and reduce idling times. Addressing traffic pollution in Detroit requires a combination of policy changes, infrastructure improvements, and behavioural shifts to create a more sustainable and healthy urban environment for its residents.
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Climate change
The Detroit River has historically been a source of water for various industries and has experienced rapid residential development. This has led to the river receiving untreated waste discharges, industrial inputs, urban development runoff, and stormwater runoff, resulting in high levels of bacteria, PCBs, polycyclic aromatic hydrocarbons, metals, oils, and greases. While efforts to address these issues have shown progress, more work needs to be done to improve water quality.
Air pollution in Detroit is largely driven by emissions from industries such as U.S. Steel and Marathon Petroleum Refinery, which have been producing heavy pollutants for generations. The residential population of Southwest Detroit is predominantly made up of racial minorities and low-income individuals, with limited educational attainment. This systemic racism and lack of financial resources make the community vulnerable to exploitation and unable to lobby against corporate polluters effectively.
To address air pollution and improve public health, Detroit must recognize the issue as a public health crisis. This includes monitoring pollution levels, enforcing air pollution laws, and implementing new policies. Additionally, transitioning to cleaner energy sources, such as wind and solar power, and electrifying the vehicle fleet can help reduce emissions and improve air quality.
The American Lung Association's 2024 "State of the Air" report highlights Detroit as one of the worst cities in the nation for annual particle pollution, with Detroit-area counties receiving failing grades for ozone and short-term and annual particle pollution. Climate change is exacerbating the problem, making air pollution more challenging to clean up. Stronger national limits on ozone pollution are needed to protect public health and drive the cleanup of polluting sources.
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Water pollution
Detroit's water supply comes from the Detroit River, which is situated within the Lake St. Clair, Clinton River, Rouge River, Ecorse River, and other watersheds. The river has played a significant role in the city's history and is one of the world's busiest waterways.
However, the Detroit River has also been a source of water pollution in Detroit. During the city's rapid industrialization in the early 20th century, the river became notoriously polluted and toxic due to unregulated dumping of chemicals, industrial waste, garbage, and sewage. This pollution had severe ecological consequences, including the death of thousands of migrating birds and the depletion of oxygen levels to the point where fish could not survive. The pollution also affected Lake Erie, rendering it "dead" and incapable of supporting aquatic life.
In recent decades, there have been extensive restoration and remediation efforts to address the water pollution in the Detroit River. Since the late 20th century, various projects have aimed to remove contaminants, restore aquatic habitats, and improve water quality. These efforts have led to significant improvements, and the river has been designated as an American Heritage River and a Canadian Heritage River.
Despite these improvements, water pollution remains a concern in Detroit, particularly in terms of drinking water quality. Lead has been detected in tap water, entering through older lead service pipes and plumbing. Additionally, Chromium 6, an extremely toxic metal not currently regulated by the EPA, has been found in Detroit's tap water at levels significantly higher than the concentration considered negligible for cancer risk. Other issues, such as elevated levels of total trihalomethanes (cancer-causing chemicals) and disinfection by-products (DBPs), have also been reported.
To address these issues, organizations like Hydroviv offer specialized water filters optimized for Detroit's water problems. The city's water department also includes a corrosion inhibitor in the water supplied to customers to reduce the release of lead and other pipe materials into the drinking water. Regular water quality reports are published by the City of Detroit, assuring residents that their drinking water meets or exceeds federal and state regulatory standards.
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Power plants
Detroit, Michigan, is known for its poor air quality, which is caused by a combination of pollution sources, including heavy industrial facilities, coal-powered plants, and transportation corridors. The city's air quality has improved over the years, but it still ranks among the most polluted cities in Michigan.
Detroit Renewable Power, a large waste incinerator, has also contributed to the city's air pollution. Records show that this facility has exceeded pollution emissions standards numerous times, with almost 200 instances of non-compliance since 2015. The trash burned at this facility is used to generate electricity and steam for downtown buildings, but it has resulted in high levels of pollution.
The University of Michigan School of Public Health has conducted studies to identify major sources of particulate matter (PM2.5) in Southwest Detroit, which has some of the highest levels of air pollution in the country. The researchers found that while the COVID-19 lockdown reduced traffic-related pollutants, industrial sources, power plants, and truck traffic continued to operate, maintaining normal pollution levels.
To address the air pollution in Detroit, there is a need to transition from dirty fossil fuel power plants to renewable energy sources like wind and solar power. The gradual electrification of the vehicle fleet and the elimination of Michigan's fossil fuel power plants will be crucial in reducing emissions and improving air quality in the city.
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Frequently asked questions
Industries like U.S. Steel and Marathon Petroleum Refinery have been producing heavy pollutants for generations.
Exposure to fine particulate matter (PM2.5), ozone (O3), sulfur dioxide (SO2), and nitrogen dioxide (NO2) are responsible for more than 10,000 disability-adjusted life years (DALYs) per year, causing an annual monetized health impact of $6.5 billion.
Detroit is ranked 13th worst in the nation for annual particle pollution.
The EPA, in coordination with Michigan's Department of Environment, Great Lakes, and Energy (EGLE), has been working to address "known contamination sites" in the Detroit River Area of Concern.
The gradual electrification of the vehicle fleet and elimination of Michigan's many dirty fossil fuel power plants with wind and solar energy will reduce emissions and improve air quality.
