No fee shall be charged for the inspection of public records. The district may impose a reasonable charge for providing copies of public records and for the use by any person of agency equipment to copy public records; such charges shall not exceed the amount necessary to reimburse the district for its actual costs incident to such copying. No person shall be released a record so copied until and unless the person requesting the copied public record has tendered payment for such copying to the appropriate district official. All charges must be paid by money order, cashier's check or cash in advance.