The City of Tulsa, Oklahoma faced very serious problems with its drinking water supply because of poultry waste applied in the Eucha-Spavinaw watershed in eastern Oklahoma. When the poultry companies refused to cooperate with Tulsa, the city took them to United States Federal Court. The result was an important settlement agreement that has resulted in removal of most poultry waste from the watershed and vastly improved water quality. Read the 2018 report below. You may also wish to see the 2023 ruling by Tulsa Federal District Court Judge Gregory Frizzell upholding Oklahoma's lawsuit against Tyson and other Arkansas poultry companies for pollution of the Illinois River watershed. That ruling may be found in "Resources at this web site.