Welf. & Inst. Code, § 900

(a) If it is necessary that provision be made for the expense of support and maintenance of a dependent child of the juvenile court or of a minor person concerning whom a petition has been filed to declare the person a dependent child of the juvenile court in accordance with this chapter, the order providing for the care and custody of the dependent child or other minor person shall direct that the whole expense of support and maintenance of the dependent child or other minor person, up to the amount of twenty dollars ($20) per month, be paid from the county treasury and may direct that an amount up to any maximum amount per month established by the board of supervisors of the county be paid. The board of supervisors of each county is hereby authorized to establish, either generally or for individual dependent children or according to classes or groups of dependent children, a maximum amount that the court may order the county to pay for the support and maintenance. All orders made pursuant to this subdivision shall state the amounts to be paid from the county treasury, and those amounts shall constitute legal charges against the county.

(b) If it is necessary that provision be made for the expense of support and maintenance of a ward of the juvenile court or of a minor person concerning whom a petition has been filed to declare the person a ward of the juvenile court in accordance with this chapter, the order providing for the care and custody of the ward or other minor person shall direct that the whole expense of support and maintenance of the ward or other minor person be paid from the county treasury. All orders made pursuant to this subdivision shall state the amounts to be paid from the county treasury, and those amounts shall constitute legal charges against the county.

(c) This section is applicable to a minor who is the subject of a program of supervision undertaken by the probation department pursuant to Section 330 or 654 and who is temporarily placed out of his home by the probation department, with the approval of the court and the minor’s parent or guardian, for a period not to exceed seven days.