The Dark Side of America’s Big Agriculture

Key Concepts

Nitrate contamination in Iowa's water sources
Agricultural runoff (fertilizer and manure) as a primary source of nitrate
Health impacts of nitrate exposure (potential link to cancer and birth defects)
Influence of agricultural lobby groups (Iowa Farm Bureau) on environmental policy
Iowa Nutrient Reduction Strategy (voluntary approach)
Alternative farming practices (crop rotation with alfalfa)
Economic incentives and disincentives for sustainable farming
EPA's role in regulating nitrate levels and assessing health risks
Hypoxia zone in the Gulf of Mexico

Nitrate Contamination in Iowa's Water

Problem: High nitrate levels in source water are a persistent issue in Iowa.
Sources: Farm runoff, fertilization practices, and manure release contribute to the problem.
Impact: Treatment plants struggle to keep up with nitrate levels, leading to closed beaches due to algae and bacteria.
Example: Remsen, Iowa, faced extremely high nitrate levels in its wells.
Quote: "Nearly every Iowa County in the Hawkeye state is battling against manure being released into their water."

Health Concerns and Cancer Rates

Correlation: Iowa's cancer rate has been climbing alongside the increasing use of nitrogen fertilizers.
Uncertainty: Scientists are unsure if the correlation is causative or merely coincidental.
Statistics: Iowa has the nation's fastest-growing and second-highest cancer rate overall after Kentucky.
Specific Cancers: Concerns about links between nitrate in drinking water and bladder, colorectal, and thyroid cancers, as well as birth defects.
Quote: "There has to be some correlation between nitrate levels and cancer." - Steve Pick

Agricultural Practices and Their Impact

Modified Landscape: Iowa is one of the most heavily modified landscapes in the US, with fields plumbed for crop production.
Industry Driven: Farming in Iowa is driven by market forces, with a focus on animal feed and ethanol production.
Nitrogen Use: Farmers spread nearly 4 billion pounds of nitrogen from fertilizer and manure on 13 million acres of corn annually.
Seed Coatings: Seeds are treated with insecticides, fungicides, and nematicides, which can wash away with rainfall.
Quote: "Iowa is really among the most heavily modified landscapes in the entire country."

Remsen, Iowa: A Case Study

Initial Solution: Steve Pick organized the community to purchase farmland and plant native prairie grasses to absorb pollution, which reduced nitrate levels by 40%.
Political Interference: Conservative politicians came into power and effectively killed the project. Steve Pick was fired in 2012.
Rising Nitrate Levels: Nitrate levels shot back up in 2015.
Identified Source: The Department of Natural Resources (DNR) identified the Tentinger cattle feedlot as the source of pollution.
Political Blowback: Emails show that the DNR's chief of compliance closed the investigation to avoid political blowback.
Consequences: Remsen's shallow wells were shut down, and the town now has a $10 million water plant and higher water bills.

The Iowa Farm Bureau's Influence

Lobbying Machine: The Iowa Farm Bureau (IFB) is a lobbying machine for Big Ag businesses.
Membership: The IFB includes investors, bankers, and lawyers, not just farmers.
Deep Pockets: The IFB has significant financial resources due to its insurance subsidiary.
Influence on Policy: The IFB was able to insert passages from its publications into the Iowa Nutrient Reduction Strategy.
Voluntary Approach: The Iowa Nutrient Reduction Strategy is a voluntary blueprint for reducing nitrogen and phosphorus emissions.
Opposition to Regulation: The IFB has consistently opposed regulations on farming practices.
Quote: "The Iowa Farm Bureau projects a wholesome image, but essentially it's a lobbying machine for the Big Ag businesses in Iowa."

Alternative Farming Practices

Marsden Farm Project: Matt Liebman at Iowa State University demonstrated that crop rotation with alfalfa and grains could reduce nitrogen fertilizer use by 85% while increasing profits.
Benefits of Crop Rotation: Corn grows well after alfalfa, requiring less fertilizer because roots can access more water and nutrients.
Economic Disincentives: Current production economics favor high input use and farming practices that harm the environment and human health.
Government Subsidies: Subsidized crop insurance helps farmers maintain profitability, even with high input costs and low market values.

EPA and Regulatory Issues

10 mg/L Standard: Concerns that the current EPA standard of 10 milligrams per liter for nitrate in drinking water may not be health protective enough.
Delayed Health Assessment: The EPA acknowledged the need for a new health assessment of nitrate in 2010, but it has not been completed as of 2025.
Deregulatory Efforts: The current administration seeks to slash the EPA's budget and disband its Science and Research Division.

Downstream Effects and Ecosystem Impact

Hypoxia Zone: Nitrate pollution contributes to the hypoxia zone in the Gulf of Mexico.
Ecosystem Problem: Nitrate pollution is not just a drinking water problem but also an ecosystem problem, leading to fish kills and other environmental damage.
Interconnected System: The issue is part of a whole interconnected system, not isolated to Iowa.
Quote: "What happens downstream of us? This just kind of keeps continuing and continuing and continuing all the way to the Gulf, really, where you see the hypoxia zone."

Synthesis/Conclusion

The video highlights the complex issue of nitrate contamination in Iowa's water, linking it to agricultural practices, political influence, and potential health risks. While alternative farming methods exist, economic incentives and lobbying efforts by groups like the Iowa Farm Bureau perpetuate the status quo. The lack of updated EPA regulations and the potential weakening of environmental protections further exacerbate the problem, raising concerns about both human health and the health of the ecosystem. The case of Remsen exemplifies the challenges faced by communities trying to address nitrate pollution in the face of political and economic pressures.