Except for certified producers of organic agricultural products and those producers who possess a certificate as a producer of farm products issued by the State Department of Agriculture or an equivalent federal, state or local agency, it is unlawful for any person to operate a produce stand in conjunction with a farmers' market or to sell food at a farmers' market unless such person possesses a valid health permit issued by the health authority.
Nev. Admin. Code § 446.980
NRS 439.200, 446.940