Tyson and Cargill settle Oklahoma Illinois River pollution case as more poultry litigation continues in court

Two additional poultry companies reach agreements in long-running Illinois River Watershed litigation

Two poultry producers, Tyson Foods and Cargill, have agreed to settle Oklahoma’s decades-long lawsuit alleging poultry litter pollution in the Illinois River Watershed, committing a combined $25.5 million for remediation and conservation efforts and accepting ongoing operational requirements tied to litter management.

The agreements, filed as consent judgments on Feb. 12, 2026, follow a Jan. 14, 2026, settlement reached with another defendant, George’s Inc. Together, the three settlements mark the most significant set of resolutions since a federal court’s December 2025 judgment that held multiple poultry companies jointly responsible for watershed remediation and imposed restrictions related to poultry waste handling.

What the settlements require

Under the Tyson settlement, the company will pay $19 million. Cargill and Cargill Turkey Production will pay $6.5 million. Beyond the dollar amounts, both companies agreed to a framework that links payment obligations to oversight and measurable changes in poultry litter handling within the Illinois River Watershed.

• Progressively increase the amount of poultry litter removed from the Illinois River Watershed.
• Pay into a fund to support a special master tasked with monitoring compliance, with associated monitoring costs borne through the settlement structure.
• Pay into a remediation fund intended to finance watershed restoration work.
• Voluntarily dismiss their appeals of the federal court’s Dec. 19, 2025 judgment.

In exchange, Oklahoma agreed to release its claims against Tyson and Cargill covered by the settlements.

How the case reached this point

The underlying litigation—filed in 2005—targets phosphorus pollution linked to land application of poultry litter, which the state argued contributed to impaired waters in the Illinois River Watershed. After a liability decision in January 2023, the case moved into a remedies phase centered on how pollution should be addressed and paid for.

In June 2025, the court rejected arguments seeking dismissal on the grounds that conditions had materially changed, finding that phosphorus runoff from land-applied poultry waste continued to cause ongoing injury. On Dec. 19, 2025, the court entered a judgment requiring a phased remediation approach under special-master oversight and setting restrictions tied to continued land application of poultry waste in the watershed.

George’s settlement set an early benchmark

George’s settlement, announced Jan. 14, 2026, required the company to pay $5 million for remediation, conservation, and attorney fees, and to remove poultry litter from the watershed over seven years, with progressive targets that reduce the share remaining in the watershed. It also included funding to support compliance monitoring by a special master and a commitment that litter removed from the watershed would not be applied to other nutrient-sensitive watersheds in Oklahoma.

What remains unresolved

The settlements do not end the broader case. Remaining defendants identified in ongoing proceedings include Cal-Maine, Peterson Farms, and Simmons, and the federal-court judgment structure—featuring long-term oversight and watershed remediation planning—continues to shape negotiations and litigation strategy.

With multiple defendants still in court, the case now moves into a new phase: implementing settlement terms for some companies while litigation and potential additional resolutions continue for others.