REHS Reciprocity: How Out-of-State Certificate Holders Get California Equivalency

Already registered as an environmental health specialist or sanitarian in another state? Health and Safety Code §106725 gives you a separate path into California registration — Equivalency Determination. Here's the process, the fees, and the gating requirements.

If you're already a certified environmental health specialist or sanitarian in another state and you're moving to California, you don't need to start the REHS process from zero. Health and Safety Code Section 106725 gives CDPH a separate pathway — Equivalency Determination — specifically for out-of-state certificate holders. It's faster than the standard Options I–V pathway for most candidates, but it has its own paperwork, its own fees, and its own gotchas.

Here's exactly how it works, based on CDPH's current Equivalency Determination instructions and application form.

Who qualifies

Equivalency Determination is available to anyone who currently holds a valid, active certificate of registration as an environmental health specialist or sanitarian issued by any U.S. state or territory — that includes Puerto Rico, the U.S. Virgin Islands, Guam, the Northern Mariana Islands, and American Samoa. If your out-of-state credential has lapsed or been allowed to go inactive, you don't qualify for this pathway as-is; CDPH requires current, active registration status as one of the gating conditions.

What CDPH actually reviews

Under Section 106725, an equivalency review covers four things:

• Educational requirements — your coursework measured against CDPH's approved list, as it stood when your out-of-state certificate was issued.
• Training and experience requirements, cross-referenced against Health and Safety Code Sections 106625, 106635, and 106665 — the same statutory backbone that defines Options I through V for in-state candidates.
• Exam retake history, governed by Section 106670. If you sat for your original credentialing exam multiple times, CDPH factors that history into the review rather than ignoring it.
• Current, active registration status in your issuing state or territory at the time you apply.

In other words, this isn't a rubber stamp for anyone holding an out-of-state title. CDPH is reconstructing whether you would have qualified for California registration under the rules that applied when you originally certified.

Step 1: File the application and pay the $100 fee

You start by completing CDPH's Application for Equivalency Determination and mailing it in with a $100.00 check or money order, made payable to the Environmental Health Specialist Registration Fund — no cash accepted. This application fee is explicitly non-refundable, regardless of outcome, so make sure your paperwork is complete before you send it.

Along with the application, include:

• A copy of your current certificate of registration as a sanitarian or environmental health specialist.
• An up-to-date resume or curriculum vitae.
• Your work history as a sanitarian or EHS, listing employer, title, and dates — most recent first.

Mail everything to: California Department of Public Health, EHS Registration Program, MS 7404, IMS K-2, P.O. Box 997377, Sacramento, CA 95899-7377. The instructions specifically flag that you should not use express or overnight mail for this submission.

Step 2: Submit sealed, official transcripts

Separately from the application packet, you need to send all applicable official and sealed college transcripts to the same CDPH office — either by mail to the address above, or by email to REHSprog@cdph.ca.gov. CDPH may follow up and ask for course syllabi if your transcript alone doesn't make clear whether specific courses satisfy the education requirements in place when you were originally certified.

The REHS Program Administrator reviews everything and determines whether you've completed the necessary educational requirements. There's no fixed published turnaround time in the instructions, so build in a buffer if you're timing a move or a job start date around this.

Step 3: Pay the $327 registration fee once you're approved

If CDPH determines you meet all requirements for equivalency, the REHS program issues you a California Registered Environmental Health Specialist certificate and registration card — but only after you pay the initial $327 Biennial Registration fee. That's the same registration fee amount that applies to candidates coming through the standard Options I–V pathway once they pass the exam. Like the in-state process, your California registration is valid for two years and has to be renewed to stay active.

Equivalency Determination replaces the exam and Options I–V process for qualifying out-of-state credential holders — it doesn't replace the fees. Budget for both the $100 application fee and the $327 registration fee, and remember the application fee is spent whether or not you're approved.

What happens if you're denied

The instructions don't spell out a formal appeal process, but they do note the $100 application fee is non-refundable regardless of the determination. If your application is incomplete — missing the "have you submitted your transcripts" checkbox, for instance, which the application form flags as required — CDPH treats the application as incomplete rather than denying it outright, so double-check every required box before you mail it.

If equivalency isn't granted, your remaining path back into California registration runs through the standard Options I–V framework we cover in our companion article on that topic, potentially crediting whatever coursework and experience you can document from your out-of-state career.

The bottom line

Equivalency Determination is a real shortcut for out-of-state EHS and sanitarian certificate holders, but it hinges on documentation from the past: what your requirements looked like when you were originally certified, your full work history, and your exam retake record if any. Get your $100 application, transcripts, resume, and current certificate copy in front of CDPH as early as possible — the review itself, not the paperwork, is usually the long pole in the timeline.