Wash. Rev. Code §43.20.050

Authority.The state board of health shall provide a forum for the development of public health policy in Washington state,including adopting rules for the imposition and use of isolation and quarantine.

Wash. Rev. Code §70.28.033

Penalties. Inasmuch as the order provided for by RCW70.28.031,for the control of tuberculosis, is for the protection of the public health, any person who, after service upon him or her of an order of a health officer directing his or her treatment, isolationor examination as provided for in RCW70.28.031, violates or fails to comply with the same or any provision thereof, is guilty of a misdemeanorand, upon conviction thereof, in addition to any and all other penalties which may be imposed by law upon such conviction, may be ordered by the court confined until such order of such health officer shall have been fully complied with or terminated by such health officer, but not exceeding six months from the date of passing judgment upon such conviction.

Wash. Rev. Code §70.28.031

Police Power and Limitations.The state board of health shall adopt rules establishing the requirements for due process standards for health officers exercising their authority to involuntarily detain, test, treat or isolate persons with suspected or confirmed tuberculosis that provide for release from any involuntary detention, testing, treatmentor isolation as soon as the health officer determines the patient no longer represents a risk to the public's health.