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Registered Environmental Health Specialist / Registered Sanitarian (REHS/RS)


What is a REHS/RS Credential?

The REHS/RS is the premiere NEHA credential. It is available to a wide range of environmental health professionals.  Individuals holding the REHS/RS credential show competency in environmental health issues, direct and train personnel to respond to routine or emergency environmental situations, and frequently provide education to their communities on environmental health concerns.  The advantages of NEHA's REHS/RS registration program are: demonstrate your competency and capabilities in the environmental health field, the continual update of the REHS/RS examination and study guide based on an ongoing assessment of the environmental health field, and the tracking of individuals continuing education by NEHA.  

In 2013, the National Environmental Health Association undertook the process of a Job Task Analysis to refresh and update the REHS/RS examination. Subject Matter Experts were used to develop a new, up-to-date, relevant exam.

NEHA will be releasing this new exam on July 13, 2014, at the 78th Annual Education Conference in Las Vegas. This information reflects the changes to the exam content and suggested references.



Eligibility and Exam Registration

Eligibility to sit for this credentialing exam is determined by the National Environmental Health Association (NEHA).  Applications and fees must be submitted to NEHA for review.  For applications and additional information about eligibility requirements, please contact:  National Environmental Health Association, 720 S. Colorado Blvd., Suite 1000-N, Denver, CO 80246, Phone: 303-756-9090, ext. 310, E-mail:


Eligibility Requirements

To be eligible to sit for the REHS/RS credential examination, a candidate must meet the criteria for A, B, or C as follows:

A.  Environmental Health Degree Track: You are eligible for the credential if you have a Bachelor’s, Master’s, or PhD in environmental health from a degree program accredited by the National Environmental Health Science and Protection Accreditation Council. To find out if your degree program has been accredited by NEHSPAC, please visit their website at:

B.  Bachelor’s Degree Track: You are eligible for the credential if you hold a Bachelor’s Degree from an accredited institution (accredited by the Department of Education or the Council for Higher Education Accreditation (CHEA) that includes:

  • An Algebra course or higher level math; and

  • 30 semester/45 quarter hours in basic sciences; and

  • Two or more years of experience working in environmental health.

C.  “In-Training” Status: If you meet condition B of the eligibility requirements, but do not yet have the required work experience, you may apply for an “In-Training” Status registration. You will have three (3) years to acquire the necessary experience to transfer your registration to full-credential status. If you do not acquire the necessary experience in three years, your “In-Training” status will expire. In order to obtain the credential you will need to once again apply and be found eligible to take the exam. 



NEHA’s Credentialing Handbook

It is strongly recommended that you read NEHA’s Credentialing Handbook: Guide to Policies and Procedures for NEHA’s Credentialing Programs. This handbook  outlines all the policies you are expected to follow by being a NEHA credential holder. The handbook also outlines in further detail the procedures for applying for a credential, submitting continuing education, and maintaining your credential.

If you would like to request a hardcopy of NEHA’s Credentialing Handbook, please contact the Credentialing Department at (303) 756-9090 ext. 310, or email





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