Kiera Jefferson
The French Broad River is an important natural resource that provides a habitat for wildlife, supplies drinking water to communities, and supports recreation. However, it has faced significant water quality issues in the past, primarily due to industrial waste and chemical runoff. While industrial waste is no longer a major concern, the river still faces pollution problems, mainly from stormwater runoff carrying pollutants like oil, gas, pesticides, fertilizer, litter, and road residues. The presence of E. coli and fecal coliform bacteria, as well as elevated levels of turbidity, indicate potential point and non-point source pollution. The river has also been impacted by sediment pollution, which can smother aquatic life and interfere with their activities. Despite these challenges, the river has shown improvement over the years, and efforts are being made to address pollution sources and improve water quality through initiatives such as restoring riverside lands, implementing best practices in agriculture and forestry, and educating local citizens.
| Characteristics | Values |
|---|---|
| Common Pollutants | Sediment, pathogens, bacteria, heavy metals, excess nutrients, chemicals, oil and gas, pesticides, fertilizer, litter, diesel, motor oil, tire residue, PFAS |
| Sources of Pollution | Runoff from construction sites, agricultural operations, urban areas, and eroding stream banks; faulty wastewater treatment plants; sewage leaks; industrial waste |
| Water Quality | 66% of streams scored A or B, 34% scored C or D |
| Bacteria | Fecal coliform, E. coli |
| Dissolved Oxygen | Levels below 5 mg/l are problematic for aquatic animals |
| Economic Impact | Worth $3.8 billion annually to the region's economy |
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What You'll Learn
Sources of E. coli and bacteria
The French Broad River is listed as impaired for bacteria, but this is not cause for panic. The river is undoubtedly healthier than it was 35 years ago when the most pressing water quality issues stemmed from the industries that had built up along the river.
The primary sources of E. coli in the French Broad River are often from nonpoint source pollutants such as urban runoff, agricultural runoff, livestock in streams, pet wastes, wildlife wastes, and failing septic systems. E. coli also lives and reproduces in bed sediment and in surface waters with elevated sediment and nutrient loads. Analytical methods exist to identify the species associated with the source(s) of E. coli pollution. These methods may be used strategically and in conjunction with continued E. coli monitoring to better understand and ultimately reduce the sources and locations of bacteria pollution.
The presence of E. coli at elevated levels in streams, lakes, and rivers is an indication of potential point and nonpoint source pollution. While most strains of E. coli do not cause disease, their presence at elevated levels can indicate potential fecal contamination, which has been shown to co-occur with gastrointestinal illnesses. The EPA has determined that E. coli is the preferred fecal indicator bacterium to use when evaluating health advisories in freshwater.
Fecal coliform bacteria are found in human and animal feces. While fecal coliforms are generally not harmful, they can indicate the presence of disease-causing organisms that also live in human and animal digestive systems. Their presence suggests that swimming may be unsafe. Animal waste, particularly from cows, can be a big contributor to E. coli in the river.
Agricultural and forestry activities can significantly impact adjacent waters, but the use of good practices can reduce negative effects, such as maintaining a vegetated buffer between creeks and areas of disturbed land, keeping cattle out of creeks, and keeping chemical spray away from the water. In rural areas, the primary means of waste treatment is via septic systems. If these systems are not properly maintained, they can degrade and fail, and their effluent can runoff into adjacent waters. Repairing or replacing failed systems immediately eliminates the source of pollution.
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Stormwater runoff and pollution
Stormwater runoff is a significant contributor to the pollution of the French Broad River. The river, which serves as a critical habitat for wildlife, a source of drinking water for communities, and a site for recreational activities, has faced water quality issues due to runoff from adjacent lands and developed areas.
Stormwater is formed when rain flows over hard surfaces, collecting pollutants such as oil and gas, pesticides, fertilizer, and litter. This polluted stormwater then flows into local streams that feed into the French Broad River. The presence of fecal coliform bacteria, including E. coli, in the river is a concern for human health and the health of aquatic life. While bacteria in the river is not a new issue, increased testing and a thriving water recreation economy have brought attention to the problem.
The sources of bacteria in the river include livestock, failing septic systems, and pet waste. Livestock and pet waste contribute to the bacterial load, while failing septic systems can allow effluent to runoff into the river. Additionally, urban and agricultural runoff, as well as wildlife waste, are also sources of bacteria and other pollutants.
To address stormwater runoff and pollution, various initiatives have been undertaken. These include programs to educate local citizens about how their activities impact water sources and the importance of proper waste management. Efforts to restore riverside lands and streamside buffers, as well as initiatives to keep cattle out of creeks and maintain vegetated buffers, are also crucial. Additionally, individuals can take actions such as installing rain gardens or rain barrels to capture and treat stormwater on-site.
By implementing these measures and advocating for stronger environmental laws and increased funding for stormwater treatment, the community can play a vital role in improving and protecting the water quality of the French Broad River.
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Industrial waste and pollution
The French Broad River has faced issues with industrial waste and pollution. In the past, the riverbanks were dominated by junkyards, warehouses, and illegal trash dumping sites, leading to chemical waste and runoff pollution. While the river is undoubtedly healthier today, pollution remains a pressing issue.
One of the most significant challenges is bacteria pollution, particularly fecal coliform bacteria, which indicates the presence of harmful pollutants that threaten aquatic life and human health. Fecal coliform bacteria can come from various sources, including pet waste, wildlife waste, failing septic systems, and livestock in streams. The river has been designated as impaired by the state of North Carolina due to high levels of these bacteria, exceeding safe standards for swimming.
Sediment pollution is another significant issue. Sediment enters the river through erosion, streambank degradation, and runoff from parking lots, construction sites, and agricultural fields. This type of pollution can smother aquatic life, decrease visibility, and interfere with essential activities such as finding food and reproduction.
To address these issues, organizations like RiverLink and the French Broad River Partnership are working to promote the environmental and economic health of the river. Initiatives include restoring degraded streams, reducing stormwater runoff, protecting riparian buffers, and educating local citizens about the impact of their activities on water quality. The Clean Water Act, passed in the 1970s, also contributed to improving water quality by regulating wastewater treatment and industrial practices.
Additionally, community members can play a vital role in protecting the French Broad River. Simple actions, such as properly disposing of pet waste and supporting local ordinances that protect water quality, can make a significant difference. By working together, the community can help ensure the river's health and vitality for future generations.
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Sediment pollution
The French Broad River is one of the oldest rivers in the world and is an economic driver for the regional economy. The river and its tributaries exhibit good water quality, but some areas have significant water quality problems. The most common pollutants in the French Broad River are sediment and pathogens.
Agricultural and forestry activities can significantly impact adjacent waters, but good practices can reduce negative effects, such as maintaining a vegetated buffer between creeks and areas of disturbed land, keeping cattle out of creeks, and keeping chemical spray away from the water. Local citizens can also be educated about how their activities affect streams, rivers, and lakes. For example, storm drain stenciling projects can help people realize that what goes into a drain will end up in the river.
Initiatives to address sediment pollution in the French Broad River include restoring degraded streams, reducing stormwater runoff, and protecting lands including riparian buffers that are critical to filtering pollutants. The Mills River Partnership (MRP), a non-profit organization, educates the local community about water quality issues and helps farmers and landowners implement best management practices to control sediment and other pollutants.
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Impact on aquatic life and wildlife
The French Broad River is an important source of drinking water for many communities and a habitat for a variety of wildlife. While the river and its tributaries generally exhibit good water quality, certain sections suffer from significant water quality issues. The most common pollutants are sediment and pathogens.
Sediment pollution is caused by runoff from construction sites, agricultural operations, and eroding stream banks. Sediment can smother aquatic life, decrease visibility, and interfere with activities such as predator avoidance, feeding, and reproduction for trout, darters, mussels, and insect larvae. Additionally, toxic heavy metals dumped or leached into the river over the years have settled into the sediment, creating higher concentrations of contaminants in the riverbed and shorelines.
Pathogens, such as E. coli and fecal coliform bacteria, are another significant issue. These bacteria are indicators of the presence of other pollutants that can harm sensitive aquatic life. Sources of bacterial pollution include agricultural runoff, sewage leaks, faulty wastewater treatment plants, and stormwater runoff carrying pollutants like oil and gas, pesticides, fertilizer, and litter. While most strains of E. coli do not cause disease, elevated levels can indicate potential fecal contamination, which has been linked to gastrointestinal illnesses.
The impact of these pollutants on aquatic life and wildlife is significant. The river once hosted native creatures that could not survive in degraded waters, and their absence serves as a stark reminder of the importance of clean water. However, there are also signs of wildlife thriving in and around the river. For example, the return of beaver populations and the presence of otters, muskrats, herons, kingfishers, and other wildlife indicate a degree of ecological resilience.
Community members and local organizations are actively working to improve and protect the water quality of the French Broad River. Initiatives include restoring riverside lands, educating citizens about the impact of their activities on water quality, and advocating for ordinances that protect water quality and improve stormwater treatment. These efforts are crucial for ensuring the river can support both human and wildlife populations that depend on it.
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Frequently asked questions
While the French Broad River is undoubtedly healthier than it was 35 years ago, it is still polluted. The river has been listed as impaired for bacteria and fecal coliform, which can be harmful to human health and aquatic life. The primary sources of E. coli are non-point source pollutants such as urban and agricultural runoff, pet and wildlife waste, and failing septic systems.
The French Broad River has been impacted by various sources of pollution, including industrial waste, agricultural runoff, sewage leaks, faulty wastewater treatment plants, and stormwater runoff. Stormwater runoff picks up pollutants like oil and gas, pesticides, fertilizer, litter, and road residue, which then flow into the river.
The pollution in the French Broad River has had several negative impacts. It has led to a decrease in water quality, habitat degradation, and the loss of native creatures that cannot survive in degraded waters. Additionally, it has impacted the local economy, which heavily depends on outdoor tourism and clean water.
Several organizations, such as RiverLink and French Broad Riverkeeper, are working to address the pollution in the French Broad River. Initiatives include restoring riverside lands, implementing best management practices for agriculture and forestry, educating local citizens, and advocating for state and local ordinances that protect water quality. Community members can also help by properly disposing of pet waste, planting native woody plants along streambanks, and supporting organizations working to improve water quality.
