Residue from Human Waste as Farm Fertilizer Sparks Neighbor Concerns
Leslie Stewart, from rural Lincoln County, Oklahoma, has been affected by the use of biosolids as farm fertilizer, raising community concerns over the risk of toxic PFAS contamination and groundwater pollution.
Published on March 31, 2025
In rural Lincoln County, Oklahoma, residents like Leslie Stewart have experienced firsthand the negative impacts of using biosolids—treated human waste—as farm fertilizer. The spread of sewage sludge on fields has led to unpleasant odors and an influx of flies, while raising fears over contamination from toxic chemicals such as PFAS, commonly known as “forever chemicals.” Concerns continue to grow as states like Maine have imposed temporary bans, and Oklahoma debates stricter regulations. Recent reports, including those from early 2025, have emphasized that although biosolids offer economic and environmental benefits, the potential health risks, including groundwater pollution and cancer, cannot be ignored.
Additional studies reveal that the production process—from debris removal and aeration to anaerobic digestion—is designed to kill pathogens while retaining crucial nutrients. However, testing for emerging contaminants like PFAS has become a focal point amid warnings from the EPA. As regulatory bodies assess the risks, public debate intensifies over whether to prioritize agricultural efficiency and cost-effectiveness or to safeguard community health and environmental quality.