(1) If treatment is provided by an approved public treatment facility and the patient, including a committed person, has not paid the charge therefor, the approved treatment facility is entitled to any payment received by the patient or to which he or she may be entitled because of the services rendered and from any public or private source available to the approved treatment facility because of the treatment provided to the patient. The treatment facility may seek and obtain a judgment in an appropriate court for any fees or charges which have not been paid.

(2) A patient in an approved treatment facility, or the estate of the patient, or a person obligated to provide for the cost of treatment and having sufficient financial ability is liable to the approved treatment facility for the cost of maintenance and treatment of the patient therein in accordance with rates established. The treatment facility may seek and obtain a judgment in an appropriate court for any fees or charges that have not been paid.

(3) The director shall establish by rule a standardized ability-to-pay schedule, under which those with sufficient financial ability are required to pay the full cost of services provided and those who are totally without sufficient financial ability are provided appropriate treatment at no charge. Such schedule shall take into consideration the income including government assistance programs, savings, and other personal and real property of the person required to pay, and any support being furnished by him or her to any person he or she is required by law to support.

(4) Nothing in this section shall prohibit a facility from charging a minimal fee for therapeutic purposes.