Section 47.37.240 - Payment for treatment(a) A patient in an approved treatment facility, or the person obligated to provide for the cost of treatment of a person committed under this chapter, is liable to the public or private facility for the cost of maintenance and treatment of the patient in accordance with rates established by the department.(b) The department shall adopt regulations governing financial ability that take into consideration the income, savings, and other personal and real property of the person liable for the cost and maintenance of the patient.