National Environmental Health Association (examination owner); Illinois Department of Financial and Professional Regulation (LEHP licensing authority) · Current, undated REHS/RS Exam Content outline linked by NEHA, checked 2026-10-20. The outline states five weighted duty areas and 200 scored items within a 225-question examination; it supplies no version number or effective date. Licensed Environmental Health Practitioner is an Illinois license designation: IDFPR explicitly identifies the NEHA REHS/RS examination as its required examination. The assigned LEHP slug is preserved for this evidenced licensing pathway.

This original 20-question sample covers selected topics across the outline. It does not reproduce official exam questions or cover every tested topic.

• IDFPR: Environmental Health Practitioner
• Environmental Health Practitioner Application Packet
• Registered Environmental Health Specialist/Registered Sanitarian Credential
• REHS/RS Credential Exam Content
• NEHA Credentialing Handbook: Guide to Policies and Procedures
• FDA Food Code 2017
• FDA Food Code 2022
• Conducting a Field Investigation
• Analyzing and Interpreting Data
• Designing and Conducting Analytic Studies in the Field
• Describing Epidemiologic Data
• Principles of Epidemiology: Morbidity Frequency Measures
• How Septic Systems Work
• How to Care for Your Septic System
• Will Boiling My Water Help?
• Guidelines for Keeping Your Pool Safe and Healthy
• Defining Hazardous Waste: Listed, Characteristic and Mixed Radiological Wastes
• Hazardous Waste Characteristics
• Explain Working Levels and Picocuries Per Liter of Air
• Sterilizing Practices
• Post-Renovation Dust-Lead Testing and Composite Sampling
• Integrated Mosquito Management
• HACCP Principles and Application Guidelines
• Safety Management: Hazard Prevention and Control
• Communicating During an Outbreak or Public Health Investigation
• NIMS: Unified Command
• How Water Treatment Works
• How to Prevent Norovirus
• Bloodborne Pathogens: General Guidance
• Mold, Testing, and Remediation
• 29 CFR 1910.1030: Bloodborne Pathogens
• IS-0700.b: An Introduction to the National Incident Management System — Student Manual