Helena Joyce
The Ohio River is one of the most polluted rivers in the United States, with industrial pollution, sewage, and agricultural runoff all contributing to the problem. In 2020, power plants and other industrial facilities released the highest volume of toxic pollution into the Ohio River Basin of any US watershed, threatening the drinking water of over 5 million people. The river has a legacy of heavy industrialisation, with toxins from coal, petroleum, and steel industries lingering in the water and causing neurological and reproductive issues in fish. Climate change, outdated water management, and new industrial pollution also endanger the river, with environmental groups concerned that permit limits for pollution are being exceeded.
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What You'll Learn
Industrial pollution
The Ohio River is one of the most polluted rivers in the United States, with a long history of industrial activity along its banks. Heavy industry has dumped large quantities of toxic pollution into the river, with industrial discharges from coal-fired power plants, steel and aluminium manufacturers, petrochemical plants, and other businesses contributing to the problem. In 2020, it was reported that industrial facilities released approximately 193.6 million pounds of toxic pollution into US waterways, with the Ohio River watershed accounting for more than one-fifth of that total. This has had a significant impact on the environment and the health of the local population.
One of the main concerns regarding industrial pollution in the Ohio River is the presence of "forever chemicals", which are commonly used in waterproof coatings and non-stick pans. These chemicals have been detected in high concentrations in the tissue of fish from the river, and they have been linked to cancer and other health issues. Mercury is another toxic substance that has been found in the river, known for its detrimental effects on fetal brain development and children's health. The accumulation of such pollutants in the environment and wildlife poses a significant risk to human health, especially considering that over 5 million people rely on the Ohio River as their primary source of drinking water.
Coal-fired power plants have been identified as significant contributors to the industrial pollution of the Ohio River. For instance, Louisville Gas and Electric's Mill Creek coal-fired power plant in Kentucky released the highest toxicity-weighted pounds of discharges in 2020, including heavy metals present in coal ash such as arsenic, nickel, and chromium. Additionally, the steel producer North American Stainless in Carroll County, Kentucky, was reported to have dumped more than 3 million pounds of toxic pollution into the river in the same year, making it the largest polluter in the state by volume.
The Ohio River has also been impacted by pollution from petrochemical facilities. With the shift away from coal, new natural gas plants have come online, and liquefied gas is being directed into these facilities. This transition in America's energy landscape has introduced new sources of pollution, and environmental groups are advocating for stronger regulation and enforcement to hold both new and old polluters accountable for their impact on the river.
Furthermore, industrial pollution in the Ohio River is not just limited to chemical toxins. Nutrient pollution, particularly from nitrates, has also been a significant issue. Nitrates can lower dissolved oxygen levels in the water, leading to toxic algae blooms that impact the environment and economy of the region. These algae blooms can have detrimental effects on aquatic life and also pose risks to human health, as they are associated with developmental and birth defects.
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Sewage and stormwater runoff
When older cities were established, sewer systems were designed to manage raw sewage and transport it to treatment plants. These systems, known as "combined sewers," were also intended to handle stormwater runoff from streets and drainpipes. However, as cities expanded in population, the amount of impervious surfaces, such as roofs, parking lots, and paved areas, increased significantly. As a result, rainwater, unable to permeate these surfaces, combines with sewage in the pipes, leading to direct overflow into basements, rivers, and creeks. This issue is particularly acute in older cities with combined sewer systems, where stormwater and sewage share the same pipes.
To address this problem, many communities are working with the U.S. EPA to implement solutions. However, progress has been slow and costly. To mitigate the impact of stormwater runoff, various measures have been proposed, including the use of permeable surfaces in parking lots, increased adoption of "gray water" systems, and the utilization of rain barrels or cisterns to collect stormwater for gardening. Additionally, practices such as creating buffer zones around streams and using chemical injection systems instead of spraying can help limit runoff from farms, another major source of water pollution.
Urban and suburban areas also contribute to stormwater pollution through road use and the use of herbicides and pesticides, which eventually make their way into storm drains and streams. To raise awareness and deter littering, dumping, and excessive fertilizer use, educational initiatives like the Rain to River project have emerged, marking storm drains with messages like "NO DUMPING, DRAINS TO RIVER." These efforts aim to highlight the direct connection between storm drains and nearby water bodies, fostering a sense of responsibility among community members.
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Farming and suburban runoff
The Ohio River is one of the most polluted rivers in the United States. Its banks are highly populated and industrialized, and it has been used as a dumping ground for local cities and industries for generations. One major source of pollution in the Ohio River is runoff from farms and suburban areas.
Farmers have begun to recognize the impact of their practices on water pollution and have implemented measures to reduce runoff. For example, some farmers have adopted no-till farming, increased their cover crop acreage, and utilized two-stage ditches that help to trap sediment and collect nutrients before they reach waterways. These practices have been shown to reduce nitrate and phosphorus levels in water bodies and meet nutrient reduction goals.
Despite these efforts, farm bureaus have generally opposed direct regulation of farm runoff. Suburban and urban property owners also contribute to runoff pollution through road use and the use of herbicides and pesticides, which wash off into storm drains and streams.
To address the issue of farming and suburban runoff, it is important to promote sustainable farming practices that minimize the use of chemicals and reduce the impact of stormwater runoff. This can include the use of permeable surfaces, gray water systems, and rainwater collection for gardening. By implementing these practices and working together with farmers, suburban residents, and local communities, it is possible to reduce the impact of runoff pollution on the Ohio River and improve water quality.
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Climate change
The Ohio River Basin is one of the largest watersheds in the nation, draining from areas affected by environmental pollution from heavy industrialization, including mining and resource extraction for energy development, chemical production, and durable goods manufacturing. This has resulted in significant discharges of toxic chemicals, including legacy chemicals such as mercury and dioxins, and chemicals of emerging concern, especially PFAS and Gen-X chemicals. These forms of pollution threaten human and ecosystem health, and the river's biodiversity.
The effects of climate change on the Ohio River are not limited to flooding and water scarcity. The river's biodiversity is also at risk, with freshwater species going extinct at a faster rate than ocean or land species. Climate change also disproportionately impacts communities of color and Tribal Nations, who bear the burden of its impacts.
While governments and corporations are taking steps to address climate change, individual actions, such as informed choices and wise energy use, are crucial in tackling this global challenge.
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Dams and outdated water management
The Ohio River has been listed as one of America's Most Endangered Rivers in 2023, owing to the threat of dams and outdated water management, among other factors. The river, which is the primary source of drinking water for five million people, has been heavily industrialised and used as a dumping ground for cities and industries for generations.
The river has been divided into 21 discrete pools or reservoirs by 20 locks and dams for navigation and power generation. This "canalization" of the river has altered its natural flow and turned it into a series of reservoirs, raising water levels and allowing for commercial navigation. The construction of locks and dams, such as the Louisville and Portland Canal (now the McAlpine Locks and Dam), was necessary to bypass rapids and allow for larger commercial vessels to navigate the river. However, this has also had ecological consequences, with significant fish habitat loss in the 1960s due to the construction of the Kinzua Dam, which took 10,000 acres of Seneca land and interrupted river flow.
Outdated water management practices have contributed to the pollution of the Ohio River. The river has a history of industrial pollution, with communities along the river struggling with water pollution and public health challenges due to years of fossil fuel extraction. Additionally, the increase in impervious surfaces, such as roofs and paved areas, has led to combined sewer systems becoming overwhelmed during heavy rainfall, causing sewage to overflow into the river.
Agricultural practices have also contributed to water pollution in the Ohio River. Runoff from farms carries excess herbicides, pesticides, and nutrients from fertilisers and manure into nearby streams, which eventually drain into the river. While some farmers have adopted practices to limit runoff, such as creating buffer zones or using chemical injection systems, the impact on water quality remains a concern.
The removal of outdated dams and the implementation of modern water management practices are crucial to restoring the health of the Ohio River. Efforts have been made to remove dams, protect rivers, and prevent harmful development and pollution. However, a lack of federal funding and investment has hindered progress in restoring the river's ecosystem and ensuring clean water for the communities that depend on it.
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Frequently asked questions
The Ohio River is one of the most polluted rivers in the US. It has been used as a dumping ground for toxic industrial waste, agricultural runoff, and sewage for generations.
Power plants and other industrial facilities, such as steel producers, are major polluters of the Ohio River. In 2020, North American Stainless in Carroll County dumped over 3 million pounds of toxic pollution.
The pollution in the Ohio River has led to high levels of toxic chemicals, including mercury and PCBs, which can cause cancer and other health issues in people and animals that consume fish from the river. It also threatens the drinking water supply for over 5 million people and endangers the river's ecosystem and biodiversity.
Various organizations are working to advocate for a clean Ohio River and hold industrial polluters accountable. The Ohio River Valley Water Sanitation Commission (ORSANCO) was established in 1948 to set multi-state environmental standards and protect water quality. Other groups, such as the Ohio River Foundation and the Ohio Environmental Council, are also working to monitor and enforce regulations, promote science-based water quality standards, and secure funding for restoration projects.
Individuals can support the efforts of environmental organizations working to protect the Ohio River. Additionally, people living in the Ohio River watershed can implement practices to reduce runoff pollution, such as using permeable surfaces in parking lots, adopting "gray water" systems, and utilizing rain barrels to collect stormwater.
