RCW 69.40.030: Placing poison or other harmful object or substance in food, drinks, medicine, or water—Penalty.

(1) Every person who willfully mingles poison or places any harmful object or substance, including but not limited to pins, tacks, needles, nails, razor blades, wire, or glass in any food, drink, medicine, or other edible substance intended or prepared for the use of a human being or who shall knowingly furnish, with intent to harm another person, any food, drink, medicine, or other edible substance containing such poison or harmful object or substance to another human being, and every person who willfully poisons any spring, well, or reservoir of water, is guilty of a class B felony and shall be punished by imprisonment in a state correctional facility for not less than five years or by a fine of not less than one thousand dollars.

(2) *This act shall not apply to the employer or employers of a person who violates this section without such employer's knowledge.