Prohibits a manufacturer of class B firefighting foam from manufacturing, selling, offering for sale, or distributing for sale or use in this state class B firefighting foam to which PFAS chemicals have been intentionally added.

Requires a manufacturer or other person that sells firefighting personal protective equipment to a person, local government, or state agency to provide written notice to the purchaser if the equipment contains PFAS chemicals.

Authorizes the department of ecology to: (1) Request a certificate of compliance from a manufacturer of class B firefighting foam or firefighting personal protective equipment; and

(2) Assist the department of enterprise services, other state agencies, fire protection districts, and other local governments to avoid purchasing or using class B firefighting foams to which PFAS chemicals have been intentionally added.