Resources Facet Health Topic Health Topic N/A Facet Disease Disease N/A Facet Audience Audience N/A Resource Category (-) Applications Facet Resource Category Licensee (-) Drinking Water Operator Facet Licensee Facet Language Language N/A Applications Drinking Water Operator by Reciprocity Drinking Water Operator Exam Drinking Water Quality Training Course Approval Upgrade Request - Operator-in-Training (OIT) to Full Certification