Factory Farming in Iowa: Manure Pollution Crisis

Iowa’s manure-pollution crisis remains severe in 2025-2026, with state records and recent reporting showing continued illegal discharges, widespread water impairment, and weak enforcement. Food & Water Watch says the Iowa Department of Natural Resources documented 179 manure discharge violations from 2013-2023, and an updated 2025 analysis says Iowa factory farms produce about 109 billion pounds of manure annually, while more than half of Iowa’s rivers and streams were classified as impaired in 2024. Recent reporting indicates the problem is still active: from 2024 to 2025, the DNR reported 13 manure-discharge incidents directly into state waterways, and in 2025 regulators identified 38 agricultural NPDES permit violators while only one was fined, suggesting limited deterrence. The health and financial impacts remain significant, including nitrate contamination in drinking water, fish kills totaling about 1.9 million over the last decade, and cleanup costs for some utilities reaching around $9,000 to $10,000 per day during high-nitrate periods.