Board debates prion testing, pathogen risks for county carcass compost

Mar 17, 2026

Board members and local experts discussed scientific uncertainty around prions, limits of available lab testing for prions in compost, and whether composting conditions reduce pathogen risks; no new testing mandate was adopted beyond DEQ's annual pathogen checks.

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During the board's review of the carcass-composting program, several members raised questions about prions and other pathogens and whether the county should require additional testing before distributing finished compost.

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