Greta Jimenez
Lake Erie, the fourth-largest lake in North America, has been severely impacted by human activities. By the 1960s, the lake was perceived to be dying due to pollution from industrial waste, sewage, agricultural runoff, and chemical pollutants. This resulted in increased levels of phosphorus and nitrogen, causing eutrophication and severe algal blooms. The issue of Lake Erie's pollution gained national attention, with the Federal government stepping in to implement measures like the Clean Water Act to regulate industrial dumping. Despite these efforts, Lake Erie continues to face pollution challenges, with recent years seeing record-breaking algal blooms and concerns over drinking water safety.
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What You'll Learn
Industrial waste
Lake Erie is the fourth-largest lake by surface area of the five Great Lakes in North America. It is the southernmost, shallowest, and smallest by volume of the Great Lakes. It is also the most biologically productive of the Great Lakes. However, it is exposed to the greatest stress from urbanization, industrialization, and agriculture.
Lake Erie is the most industrialized of the Great Lakes, and for decades, factories dumped chemical pollutants into the lake and the waterways that flowed into it, such as the Cuyahoga River in Cleveland, Ohio, and the Detroit River in Michigan. The lake receives waste from city sewers, industrial plants, and agricultural runoff. This includes fertilizer, pesticides, acids, iron, and oil wastes. The heavy industrialization of the lake's watershed has resulted in the pollution of the lake, with toxins such as phosphorus, PCB, and heavy metals entering the lake. These toxins can cause cancer, birth defects, and damage to the nervous and immune systems.
The burning of the Cuyahoga River in 1969 brought negative national publicity to Cleveland and its polluted waterways. This incident, along with the perception of Lake Erie as a "'Lake Erie is dead," lake, prompted the Federal government to address water pollution in Cleveland and across the nation. In 1972, the Clean Water Act was passed to tighten regulations on industrial dumping.
Despite efforts to improve water quality, Lake Erie continues to face pollution issues. In recent years, there have been record-setting algal blooms and associated dead zones due to excessive nutrient pollution from fertilizers, manure, and industrial waste. These algal blooms have negatively impacted the lake's tourism industry and fishery, and they also threaten the drinking water supply for 12 million people.
Environmental advocates and researchers are working to identify sources of pollution and develop science-based policy solutions to reduce industrial and agricultural pollution in Lake Erie.
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$14.75
Agricultural runoff
Lake Erie is the most biologically productive of the Great Lakes. This is due to its shallow basin and warmer temperatures. However, the lake's biological productivity has been impacted by human activities, including agricultural runoff.
Eutrophication is a process where excessive nutrient enrichment leads to increased algal growth. In the case of Lake Erie, phosphorus from agricultural runoff has caused severe algal fouling, known as algal blooms or cyanobacteria. These blooms can persist for weeks during the summer, carried by winds and currents across the lake. They have also resulted in ""dead zones", oxygen-depleted areas created when the algae die and decompose.
The impact of agricultural runoff on Lake Erie's ecosystem and water quality has been significant. The algal blooms have negatively affected the lake's $12.9 billion tourism industry and world-class fishery. Additionally, the harmful algal blooms produce toxins that can seriously affect human health if swallowed or cause skin rashes through contact.
Efforts have been made to address the issue of agricultural runoff into Lake Erie. The Michigan Agriculture Environmental Assurance Program, for example, helps farmers reduce runoff and provides access to federal funding to implement practices that minimize phosphorus levels. However, some environmental groups argue that more needs to be done, calling for the creation of a pollution diet and stricter regulations for agricultural producers.
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Sewage treatment plants
Phosphorus, along with other nutrients, caused an increase in algal growth in the lake. This resulted in the creation of ""dead zones", or oxygen-depleted areas, when the algae died and started to decompose. These dead zones negatively impacted aquatic life, leading to fish die-offs. The increase in algal blooms also disrupted the lake's ecosystem, as aquatic life had to rely more on anaerobic organisms.
The pollution from sewage treatment plants also contributed to aesthetic, taste, and odor problems. The extra algae ruined beaches and accelerated the aging of the lake. In addition, sewage made the water dangerous, killing fish and making swimming hazardous.
Furthermore, sewage treatment plants, along with industrial plants and agricultural runoff, released chemicals, toxic pollutants, pesticides, and heavy metals into Lake Erie. These toxins were distributed throughout the Great Lakes and were capable of causing cancer, birth defects, and damage to the nervous and immune systems.
The pollution from sewage treatment plants in Lake Erie was exacerbated by the lack of substantial government oversight in the past. This allowed for the dumping of waste and pollutants into the lake without many repercussions. However, in recent years, there have been efforts to improve the situation, with the implementation of legislation and clean-up orders to address the pollution in Lake Erie and the Great Lakes region.
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Invasive species
Lake Erie has been severely impacted by invasive species, which have been introduced both deliberately and accidentally by human activities. The lake is the most biologically active of the Great Lakes, and its shallow, warm waters make it particularly susceptible to the introduction of non-native species.
There are currently over 185 aquatic invasive species in the Great Lakes, with nearly all of them present in Lake Erie. The introduction of invasive species has been primarily through ballast water, with other pathways including shipping, canals, and recreational boating. The economic impact of aquatic invasive species on Lake Erie is estimated at $138 million or more per year.
Efforts are being made to prevent and control invasive species in Lake Erie. The Coast Guard Authorization Act of 2018 includes a Vessel Incidental Discharge Act component that establishes a new US EPA $50 million monitoring program to prevent invasive species introductions. The Great Lakes Restoration Initiative (GLRI) is also working to prevent new introductions and control existing populations of invasive species in the Great Lakes. GLRI provides significant resources and funding to address invasive species and sets ambitious annual goals and metrics.
The primary potential entry point for Asian carp is the Chicago Sanitary and Ship Canal/Illinois River, which is currently being blocked by a series of electronic barriers. The ODNR’s April 2019 report, Lake Erie Grass Carp Response Strategy (2019-2023), describes a strategy to prevent grass carp expansion beyond western Lake Erie and the Maumee and Sandusky rivers.
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Lack of government oversight
Lake Erie, the fourth-largest lake by surface area of the five Great Lakes in North America, has long been subjected to pollution from various sources. One significant factor contributing to its polluted state has been the lack of adequate government oversight, particularly in the decades leading up to the 1970s.
During this period, there was a lack of substantial government regulation and enforcement, allowing factories and industrial plants to dump chemical pollutants, acids, oils, and other wastes into the lake and its tributaries, such as the Cuyahoga River and the Detroit River, with impunity. This led to increased levels of phosphorus and nitrogen in the lake, contributing to eutrophication and encouraging the development of harmful algal blooms.
The lack of government oversight also resulted in inadequate monitoring and management of agricultural runoff. Fertilizers, pesticides, and manure from nearby farms entered the lake, further exacerbating the problem of eutrophication and algal growth. The lake's shallow basin and warm temperatures make it particularly susceptible to the effects of pollution, and the excessive algal blooms have had detrimental consequences for the lake's ecosystem and the region's economy, including the $12.9 billion tourism industry.
Additionally, the lack of stringent government intervention allowed for the continued discharge of pollutants from sewage treatment plants, contributing to the degradation of the lake's water quality. While there have been some efforts to reduce nutrient pollution, such as the Clean Water Act, loopholes in the legislation have shielded agricultural operations from similar federal enforcement, allowing them to continue contributing to the lake's pollution.
The lack of government oversight has also been evident in the approval of industrial and agricultural projects without considering their potential environmental impact. For example, in 2019, permits were issued for nine new sites with large numbers of livestock in the western Lake Erie region, adding to the problem of manure and fertilizer runoff. The cumulative effect of these factors has been a severe decline in the health of Lake Erie, with far-reaching consequences for the region.
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Frequently asked questions
Lake Erie is the most industrialized of the Great Lakes and is therefore susceptible to pollution from various sources. These include industrial waste, sewage, and agricultural runoff.
Pollution in Lake Erie has led to eutrophication, a process that encourages the development of algal blooms. These blooms create dead zones where oxygen is depleted, leading to fish kills and negatively impacting the lake's tourism and fishing industries.
Efforts to address Lake Erie's pollution include the passing of the Clean Water Act, which tightened regulations on industrial dumping, and the Great Lakes Water Quality Agreement between the United States and Canada. Additionally, local governments have worked to improve sewer systems and monitor water quality. However, pollution from agricultural operations and invasive species continue to be a concern.
