NEHA REHS Registered Environmental Health Specialist Vocabulary Game
Exam terms with clues and explanations by OpenExamPrep.
About the NEHA REHS Registered Environmental Health Specialist Vocabulary Game
A free word game for the NEHA REHS Registered Environmental Health Specialist exam. Each round shows a clue for one of 20 exam terms across 12 topics. Recall the term, spell it out, then read a short explanation. Rounds pick a random term, so you can keep playing as long as you like.
How to Play
- 1Read the clue and type a term with the right number of letters (3 to 6). Abbreviations count: type the letters only.
- 2Press Check Answer or Enter. Each letter changes color to show how close you are.
- 3You have 6 tries. Stuck? Need a hint? asks the AI tutor for a nudge without giving the term away, and Skip moves to a new term.
- 4After the round, read the explanation, ask the AI to explain it, share your result, or press Next.
- ARight letter, right spot
- AIn the term, wrong spot
- ANot in the term
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Topics in the NEHA REHS Registered Environmental Health Specialist Vocabulary Game
Food inspections
Wastewater
Drinking water
Waste facilities
Body art
Healthy homes
Pest control
Epidemiology
Compliance review
Surveillance
Public messaging
Emergency response
Sources for these terms (17)
- Food Code 2017 · Source checked 2026-11-03
- HACCP Principles & Application Guidelines · Source checked 2026-11-03
- 5.2 Dissolved Oxygen and Biochemical Oxygen Demand · Source checked 2026-11-03
- Glossary of Acronyms & Technical Terms · Source checked 2026-11-03
- About Septic Systems · Source checked 2026-11-03
- National Primary Drinking Water Regulations · Source checked 2026-11-03
- Resource Conservation and Recovery Act (RCRA) Overview · Source checked 2026-11-03
- Think Before You Ink: Tattoo Safety · Source checked 2026-11-03
- Radon · Source checked 2026-11-03
- Risk Factors and Children · Source checked 2026-11-03
- Appendix A: How Infections Spread · Source checked 2026-11-03
- Principles of Epidemiology: Glossary · Source checked 2026-11-03
- Principles of Epidemiology | Lesson 3 - Section 2 · Source checked 2026-11-03
- Behavioral Risk Factor Surveillance System · Source checked 2026-11-03
- About the Morbidity and Mortality Weekly Report (MMWR) Series · Source checked 2026-11-03
- About CERC · Source checked 2026-11-03
- Glossary of Related Terms · Source checked 2026-11-03
About the NEHA REHS/RS Exam
The national NEHA REHS/RS credential exam covers five current task domains: Surveillance, Inspections, Investigations, Compliance Review, and Environmental Health Information.
Exam sponsor: National Environmental Health Association (NEHA) / Pearson VUE. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.
Questions
225 questions
Time Limit
3 hours 40 minutes
Passing Score
650/900 (scaled score)
Reported exam pass rate: NEHA does not publicly publish an official first-time pass rate.. 200 of 225 questions are scored; 25 are unscored pilot items Exam sponsor website
Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.
Frequently Asked Questions
Is the REHS/RS vocabulary game free?
Yes. The game is free to play with no sign-up. Signing in adds AI explanations for any term.
How does the REHS/RS vocabulary game work?
Each round shows a clue for one of 20 REHS/RS terms. Guess the term in six tries: green means the right letter in the right spot, yellow means the letter is in the term but in another spot, and gray means it is not in the term. After the round, read the explanation and play the next term.
Where do the REHS/RS terms come from?
OpenExamPrep researched each term from the National Environmental Health Association (NEHA) / Pearson VUE content outline and primary sources, listed under Sources on this page. The game is independent study material, not an official exam resource.
How many questions are on the REHS/RS exam?
The REHS/RS exam has 225 multiple-choice questions total, split into two parts (113 + 112). Of these, 200 are scored and 25 are unscored pilot questions. You have 3 hours and 40 minutes total testing time.
What is the passing score for the REHS/RS exam?
The passing scaled score is 650 out of a possible 900. This is a scaled score, not a percentage — the raw passing score is mathematically transformed so that the passing scaled score always equals 650.