The REHS credential requirements set by the National Environmental Health Association come down to three things: a bachelor’s degree with the right coursework, qualifying work experience under most pathways, and a passing score on NEHA’s 250-question Registered Environmental Health Specialist exam. Total cost runs $420 for NEHA members and $605 for non-members, and the credential has to be renewed every two years.
Who Qualifies to Sit for the Exam
NEHA uses three eligibility tracks. All of them require at least a bachelor’s degree from an accredited U.S. institution. Which track fits you depends on what your degree is in and how much field experience you have.
Track A: Accredited Environmental Health Degree
If your bachelor’s, master’s, or doctoral degree is in environmental health from a program accredited by the Environmental Health Accreditation Council (EHAC), you qualify with no work experience required. Both the institution and the specific degree program have to appear on EHAC’s accredited list.
Track B: Any Degree Plus Science Coursework and Experience
If your degree is in another field, Track B is the standard route. You need:
- At least 30 semester hours (or 45 quarter hours) of basic science coursework across life, natural, physical, or health sciences
- A college-level math or statistics course
- At least two years of full-time, paid environmental health work experience
The experience has to be verified by a third party on NEHA’s Work Experience Verification Form. Qualifying duties include field inspections, laboratory analysis, regulatory enforcement, and similar activities spanning more than one environmental health program area.
Track C: In Training
Track C is for candidates who meet Track B’s education requirements but don’t yet have two years of experience. You can sit for the exam and, if you pass, receive a certificate marked “REHS/RS — In Training.” You then have three years to finish the two-year experience requirement and submit proof. Miss that three-year window and the In Training status expires; you may have to reapply and retake the exam from scratch.
Applying and Paying
Applications go through the MyNEHA portal. You create an account, select Credentials & Exams, choose REHS/RS, and work through the form. Official transcripts from every post-secondary institution you attended must be sent directly to NEHA so it can verify both the degree and the science coursework.
Three fees are due before NEHA will process the application:
- Application fee: $95 members, $130 non-members
- Examination fee: $185 members, $335 non-members
- Pearson VUE testing fee: $140, same for everyone
That totals $420 for NEHA members and $605 for non-members. Submit the application at least two weeks before the exam date you want. Once NEHA approves it, you’ll receive authorization to schedule the test at a Pearson VUE center.
The Exam
The REHS/RS exam is computer-based, multiple choice, and administered year-round at Pearson VUE centers. It has 250 questions split into two 125-question parts, with two hours allowed for each part and a 15-minute break between them. The full testing window runs about four hours and fifteen minutes.
Content covers the full range of environmental health practice. Food protection is the single largest domain at roughly 14 percent of questions. Other areas include potable water, wastewater, solid and hazardous waste, vector control, air quality, occupational safety, housing sanitation, swimming pools and recreational facilities, radiation protection, and emergency preparedness. Questions are built around the kinds of real-world scenarios an inspector would encounter in the field.
Scores run on a scaled range from 0 to 900. You need a 650 to pass. The scaling exists so results stay comparable across different versions of the exam, so the passing threshold is not a straight percentage of questions answered correctly.
If You Don’t Pass
You have to wait at least 90 days from your last attempt before retaking the exam. NEHA sends a retake application two to four weeks after the test, and once you return it with the fees, new testing authorization follows in another two to four weeks.
Retakes cost less than the initial attempt because you only pay the exam fee ($185 members / $335 non-members) and the $140 Pearson VUE fee. You don’t resend transcripts or pay the application fee again. One hard deadline matters: retake applications must be submitted within two years of your last exam date. Miss that, and you start over with a new application and the full fee schedule.
Keeping the Credential Active
The REHS/RS is valid for two years. Renewal requires completing the required continuing education contact hours and paying a renewal fee of $130 for members or $345 for non-members. Miss the deadline and a late fee applies.
Continuing education can come from conferences, courses, workshops, and other approved professional development. Letting the credential lapse can also create problems with employers or state agencies that require active credentialed status to perform regulatory work.
Credential holders also agree to NEHA’s Code of Ethics, which requires staying current through continuing education, conducting yourself professionally, and avoiding any conduct that would impair your regulatory duties under federal, state, or local law. A breach can result in revocation.
The State Registration Question
One thing worth clearing up before you apply: the NEHA credential and state environmental health registration are not the same thing. NEHA issues the national REHS/RS. States run their own registration programs with their own eligibility rules, passing scores, and continuing education requirements, and holding one does not automatically give you the other.
The two systems do overlap. Arizona, Connecticut, Florida, Georgia, Illinois, Maryland, Minnesota, Montana, Nevada, North Carolina, Ohio, Oregon, Washington, West Virginia, and Wisconsin use NEHA’s exam as their state credentialing instrument, though each still sets its own eligibility rules independently. If you already hold a valid state REHS or RS credential and previously passed the NEHA exam with the required score, you may qualify for the national credential through reciprocity without taking the exam again. Check your state’s rules before assuming either credential covers the other.