The Office of Internal Audit serves an independent appraisal function within the district. It is charged with developing and implementing an internal audit program designed to examine and evaluate district activities. An objective of this office is to provide assurance to district management that internal controls, operational policies and district procedures are sufficient. The office provides district management with written reports containing analyses, appraisals and recommendations concerning activities reviewed.

The department also manages, investigates and resolves calls made to the district Fraud Hotline.