Greta Jimenez
Ohio's large and dense population, coupled with its high level of industrial activity, has led to significant air pollution issues. The state's major cities, such as Cleveland, have recorded moderate to high levels of air pollution, with PM2.5 readings exceeding the World Health Organization's target. This pollution arises from vehicles, power plants, and industrial sources, leading to health issues such as respiratory problems and potentially more severe conditions. Water pollution is also a concern, with the Ohio River and its tributaries receiving discharges from various companies, as well as stormwater runoff and agricultural sources, posing risks to human health and the environment.
| Characteristics | Values |
|---|---|
| Population | Very large and dense |
| Industry | High amount |
| Air pollution issues | PM2.5 readings of 12.4 μg/m³ in Cleveland, 11.2 μg/m³ in Seville, 6.6 μg/m³ in Painesville, and 6.4 μg/m³ in Medina |
| Main causes of air pollution | Vehicles, commuting, industry, power plants, construction sites, unpaved roads, fields, smokestacks, fires |
| Health issues | Dry coughs, chest pains, infection, irritation to mucous membranes, skin irritation, atopic dermatitis, eczema, skin cancer, asthma attacks, lung development in children, premature death |
| Ozone pollution | Ground-level ozone or smog, composed of O3, is a harmful air pollutant that can cause respiratory issues and increase the risk of lung cancer |
| Particle pollution | Made up of very small particles containing toxic chemicals like dust, dirt, soot, and smoke, can cause early death, heart attacks, strokes, and emergency room visits |
| Regulatory bodies | U.S. Environmental Protection Agency (EPA), Ohio EPA, Northeast Ohio Areawide Coordinating Agency (NOACA) |
| Air Quality Index (AQI) | "Good" AQI is 0 to 50, "Moderate" AQI is 51 to 100, "Unhealthy for Sensitive Groups" AQI is 101 to 150 |
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What You'll Learn
Air pollution from vehicles
Ohio's air quality is impacted by a range of factors, and vehicles are a significant contributor to the state's air pollution. The state is home to millions of people, and there is a constant flow of traffic between its cities, particularly the major economic and financial centres. This daily mass movement of people in cars, motorbikes, and other personal vehicles emits exhaust fumes, which contain hazardous fine particulate matter and various chemical compounds.
One of the most prominent pollutants from vehicle emissions is nitrogen dioxide (NO2). Nitrogen dioxide is often found in high quantities in areas with heavy traffic, and its presence is a strong indicator of high vehicle emissions. Other pollutants released from vehicles include sulfur dioxide (SO2), black carbon, and volatile organic compounds (VOCs). These compounds can have serious health impacts, especially for vulnerable groups such as children, older adults, and people with pre-existing health conditions like asthma or heart disease.
In addition to personal vehicles, heavy-duty vehicles like lorries and trucks contribute significantly to air pollution. These larger vehicles often run on diesel fuel and emit more pollution than smaller vehicles. The wearing down of tires on these heavy-duty vehicles also releases tons of microscopic rubber particles into the air and onto Ohio's roads. Furthermore, the state's industrial activities, including manufacturing and transportation of goods, add to the problem.
The impact of vehicle emissions on air quality in Ohio is evident in the state's PM2.5 readings. PM2.5 refers to particulate matter that is 2.5 micrometres or less in diameter, and these tiny particles can have harmful effects when inhaled. While some cities in Ohio, such as Painesville and Medina, have shown cleaner air quality readings, others like Cleveland and Seville have recorded moderate to higher levels of pollution, with PM2.5 readings above the World Health Organization's target of 10 μg/m³.
To address the issue of air pollution from vehicles, Ohio has organisations like the Northeast Ohio Areawide Coordinating Agency (NOACA), which works to ensure that travel throughout the region is environmentally sound. Additionally, federal laws like the Clean Air Act place restrictions on emissions from factories and power plants. However, the cumulative impact of vehicle emissions and other sources of pollution remains a concern for scientists and policymakers working to improve Ohio's air quality.
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Water pollution from industrial waste
Industrial discharges from power plants, manufacturing facilities, and other businesses have contributed to the toxic pollution of the Ohio River. In 2020, these industries released nearly 41 million pounds of toxic substances into the Ohio River Basin, making it the most polluted watershed in the United States that year. These toxic chemicals include nitrates, which can cause harmful algal blooms, lower dissolved oxygen levels, and have adverse effects on human health, including birth defects.
The Clean Water Act, implemented by the U.S. Environmental Protection Agency (EPA), aims to regulate water pollution by issuing permits and setting science-based water quality standards. However, there is criticism that the regulatory approach often prioritizes dilution as a solution to pollution, without fully understanding the cumulative impacts of different chemical discharges on human health and the environment. This has led to concerns about the presence of persistent "forever" chemicals in drinking water sources, which may have unknown bioaccumulation effects on our bodies.
To address these issues, organizations like the Ohio River Foundation (ORF) work to monitor enforcement of regulations, promote the adoption of stricter water quality standards, and raise awareness about persistent "chemicals of concern." They also collaborate with partners to improve water quality in the Ohio River and its tributaries through various programs and initiatives.
Additionally, runoff from farms and urban areas contributes significantly to water pollution in Ohio. Farmland runoff carries excess herbicides, pesticides, and fertilizers into nearby streams, while urban areas face issues with stormwater runoff carrying pollutants from roads and properties into storm drains and waterways. Implementing practices such as buffer zones, permeable surfaces, and rainwater collection systems can help mitigate these issues and improve water quality in Ohio's rivers and tributaries.
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Air pollution from power plants
Ohio has a large and dense population, as well as a high level of industrial activity, which makes it susceptible to air pollution issues. The state's power plants are the largest single source of carbon pollution, responsible for 48% of statewide emissions. In fact, Ohio's power plants produce as much carbon each year as 25,200,000 cars. The top five most polluting power plants in the state are General James M Gavin, JM Stuart, FirstEnergy WH Sammis, Cardinal, and Miami Fort.
Air contaminants from power plants can cause asthma and other serious health conditions such as cardiovascular disease and nervous system impacts. Coal-burning power plants emit mercury, which is a potent neurotoxin that can cause permanent brain damage to children and lead to developmental delays, learning disabilities, and birth defects. The mercury emitted by these power plants falls into waterways and can accumulate in the food that families eat.
The Clean Water Act and Clean Air Act place restrictions on what can be emitted and discharged from factories, including power plants. However, the cumulative impact of these emissions is still a cause for concern among scientists. In response to this, the Obama administration directed the Environmental Protection Agency (EPA) to propose limits on carbon pollution from power plants, with Ohioans submitting a large number of public comments in support of this initiative.
In addition to power plants, other sources of air pollution in Ohio include vehicles, construction sites, road repairs, dust storms, and the extraction of raw materials from the earth. The state's high population also contributes to the problem, with widescale commutes between cities resulting in large amounts of exhaust fumes.
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Water pollution from sewage
One of the main challenges regarding water pollution from sewage is the aging infrastructure in many older cities. When these cities were built, planners installed sewer systems designed to handle raw sewage and convey it to treatment plants. In some cases, these "combined sewers" were also designed to transport stormwater runoff from streets and drainpipes. However, as cities grew in population, the amount of impervious surface (such as roofs, paved areas, parking lots, and sidewalks) increased. As a result, rainwater combines with sewage in the pipes, causing overflow into basements, rivers, and creeks.
Many communities are working with the U.S. EPA to reduce these problems, but progress is slow and expensive. To address these issues, infrastructure improvements must be combined with efforts to reduce stormwater runoff. This includes using permeable surfaces in parking lots, increasing the use of "gray water" systems, and collecting stormwater for gardening using rain barrels or cisterns.
Runoff from farms is another significant source of water pollution. Water leaving farmland drains into streams, carrying excess herbicides, pesticides, and nutrients from fertilizers and manure. While some farmers have adopted practices to limit runoff, such as creating buffer zones around streams or using chemical injection systems, many farm bureaus oppose direct regulation. Suburban and urban property owners also contribute to runoff pollution through road use and the use of herbicides and pesticides.
Organizations like the Ohio River Foundation (ORF) are working to address these issues by monitoring enforcement of regulations and promoting the adoption of science-based water quality standards. They aim to protect and improve water quality in the Ohio River and raise awareness about persistent "chemicals of concern" in drinking water sources.
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Air pollution from refineries
Ohio's air pollution issues are influenced by a combination of factors, including its large and dense population, as well as a high level of industrial activity. The state's air quality is impacted by emissions from vehicles, power plants, and industrial operations, which contribute to the release of harmful pollutants.
One of the significant contributors to air pollution in Ohio is vehicle emissions. The state experiences high volumes of traffic due to the large number of people commuting between its cities, particularly those travelling to major economic and financial centres. These vehicles, including cars, motorbikes, and heavy-duty industrial transport, release exhaust fumes containing hazardous particulate matter and chemical compounds. Nitrogen dioxide (NO2) and sulfur dioxide (SO2) are commonly emitted by vehicle engines, with NO2 being particularly indicative of high traffic volumes. Black carbon and volatile organic compounds (VOCs) are also released from cars and factories, further contributing to air pollution.
Industrial activities, including manufacturing and power generation, also play a role in Ohio's air pollution. Power plants, for example, release pollutants such as mercury, which can have serious health impacts, especially on children. Coal-burning power plants are of particular concern, as they emit mercury that can accumulate in waterways and the food chain, leading to potential neurotoxic effects.
The air pollution in Ohio has significant health implications for its residents. The particulate matter in the air, known as PM2.5, can be as small as 0.001 microns in diameter, allowing it to bypass the body's natural defences. This fine particulate matter can cause a range of health issues, including respiratory problems, skin irritation, and potentially more severe conditions such as lung cancer. People with pre-existing lung diseases, children, older adults, and people of colour are particularly vulnerable to the effects of air pollution.
To address air pollution from refineries and other sources, Ohio has implemented measures such as the Clean Water Act and Clean Air Act, which place restrictions on emissions and discharges from industrial facilities. Additionally, individuals can take steps to reduce their contribution to air pollution, such as driving less, turning off their engines when idling, and reducing outdoor activities when air quality is predicted to be poor.
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Frequently asked questions
The most common form of air pollution in Ohio is ground-level ozone, which is created by chemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOC). This happens when pollutants from cars, power plants, industrial boilers, refineries, and other sources react in the presence of sunlight. Other causes of air pollution in Ohio include its dense population and high amount of industry.
Air pollution can cause various health issues, including dry coughs, chest pains, infections, irritation to the mucous membranes in the eyes, ears, mouth, and nose, and skin irritation or rash outbreaks. More severe health risks include conditions such as atopic dermatitis, eczema, and even skin cancer, depending on the specific pollutants.
Water pollution in Ohio is a significant issue, with hundreds of companies discharging pollutants into the Ohio River and its tributaries. While state agencies issue permits for this practice under the Clean Water Act, the potential cumulative impact of different chemical discharges on human health and the environment is not well understood. Runoff from farms, as well as urban and suburban areas, also contributes to water pollution in the state.
