Agriculture and environmental protection; creating the Oklahoma PFAS-Safe Biosolids and Farmland Protection Act. Effective date.

SB 2141 creates Oklahoma's "PFAS-Safe Biosolids and Farmland Protection Act" to regulate the land application of biosolids (treated sewage sludge) and septage on farmland. It requires mandatory PFAS testing before application using EPA Method 1633, establishes four tiered concentration limits (from unrestricted use at <20μg/kg to prohibition at >100μg/kg), and mandates that generators share test results and tier information with landowners before application. The bill directly affects wastewater treatment facilities (generators), farmers receiving land application, and the Oklahoma Department of Environmental Quality (enforcement). Landowners must provide written consent acknowledging PFAS data, and records must be kept for 10 years, with additional safeguards for food crops and sensitive areas.