OK HB3660

Legalizes and regulates natural organic reduction (human composting) as a method of final disposition of human remains in Oklahoma, defining it as the contained accelerated conversion of human remains to soil using heat, water, and organic material in licensed facilities

Requires natural organic reduction facilities to obtain annual licenses ($750 fee) from the Oklahoma Funeral Board and operate in conjunction with a licensed funeral or commercial embalming establishment under a funeral director in charge

Mandates facilities maintain vessels reaching minimum 131°F for 72 consecutive hours, meet specific contaminant limits (cadmium ≤7.1 ppm, lead ≤150 ppm, mercury ≤5 ppm, arsenic ≤11 ppm), and conduct third-party laboratory testing of reduced remains

Subjects facilities to Oklahoma Funeral Board inspections, requires chain-of-custody identification systems throughout the process, and mandates record retention for 5 years after release of reduced remains

Makes performing natural organic reduction without proper license and permit a felony offense, effective November 1, 2026