Verify a biohazard cleanup company first
Five things worth verifying yourself before you hire a biohazard cleanup company: registration, certification, insurance, waste disposal and process.
Most advice on hiring a biohazard cleanup company comes down to a short list of questions to ask. How to choose a remediation company covers that version, for when the decision has to be made in minutes. The checklist below is for the opposite situation: there is time to check, for example scheduling the work in advance, managing it for a tenant or client, or following up after the fact, and an answer is worth verifying rather than taking on trust.
What it should cost is covered separately: see biohazard cleanup cost by scenario for published ranges. This checklist is about who is doing the work, not what to pay.
The five checks at a glance
| Check | What it verifies | Where to check it yourself |
|---|---|---|
| California registration | Legal permission to be paid for this work in California | Search the state's published register by company name |
| IICRC certification claim | Whether a stated technician or firm credential is real | IICRC's own Global Locator, or call IICRC directly |
| Certificate of insurance | Whether coverage is active, not just stated | Call the agent or insurer named on the certificate |
| Waste disposal permit | Who is allowed to haul the regulated waste away | Ask for the permit number and the issuing agency |
| The process they describe | Whether it matches a documented, stage-by-stage walkthrough | Compare against a published process guide |
Check California's register yourself
If the job is in California, this is the fastest check available: search the state's published register by company name, city or zip to see whether a company is on it. A match shows legal permission to be paid for this work; it is not a quality rating. See who's registered for biohazard cleanup for what the register does and does not cover, and the checkable signals to use where no equivalent register exists.
Registering is not a self-declaration. California's own law describes an approved application: the department "shall register a trauma scene waste management practitioner and issue a trauma scene waste hauling permit to a trauma scene waste management practitioner who submits a completed application form and the registration fee, upon approval of the application by the department."
Source: California Health & Safety Code §118321.1
The list itself is a public record for the same reason: the department "shall maintain an inventory of registered trauma scene waste management practitioners," and separately "shall submit a list of registered trauma scene waste management practitioners to all local agency health officers and directors of environmental health, county administrators, and county sheriffs, and shall make the list available, upon request, to other public agencies and to the public," which is also why this site can publish a searchable copy of it.
Source: California Health & Safety Code §118321.2
Verify an IICRC certification claim through IICRC itself
IICRC certifies two different things: an individual technician, through its Trauma and Crime Scene Technician (TCST) credential, and separately a firm, through Certified Firm status. A company can describe either one; check which one they actually mean.
IICRC's own page states plainly that "there are no prerequisites for this certification," meaning nothing about prior field experience is required to sit for the TCST exam, by IICRC's own description. Worth knowing before a technician's TCST credential alone settles how experienced they are.
Source: IICRC, Trauma and Crime Scene Technician (TCST)
To hold Certified Firm status at all, IICRC requires, per its own FAQ: "Current liability insurance" and "At least one active Certified Technician." That is a firm-level status built on at least one individual certification, not a replacement for checking a company's own insurance yourself (below).
Source: IICRC, IICRC FAQs
Either way, verify it rather than take it on the company's word. IICRC's own page states: "You can verify any IICRC Certified Firm and their qualifications on the IICRC Global Locator." The same page also lists a direct line to call instead: "Or contact us at 844-464-4272 to verify."
Source: IICRC, Certified Firm Verification
Call the insurer on the certificate, not just the company
A certificate of insurance names a specific agent, insurer and policy number. Whether a claim is likely to be paid for biohazard cleanup specifically is a separate question; see does insurance cover biohazard cleanup for that. This step is about the company's own liability and pollution coverage.
Our own suggestion, not a legal requirement: call the number on the certificate directly, rather than relying on what the company says over the phone, and ask the agent whether the policy is active before you sign anything.
Ask who holds the waste disposal permit
In California, this traces to the same registration above: a hauling permit is issued once the department approves the registration application. Outside California this site does not track whether an equivalent permit system exists; see who's registered for biohazard cleanup for that scope limit and the other checkable signals.
Either way, ask for the specific permit or registration number and which agency issued it, write it down, and treat it the same way as the two checks above: something to follow up on independently, not something to take on trust.
Compare what they describe to a documented process
Ask the company to walk through what will actually happen at your property, stage by stage, before you agree to anything. What happens during a biohazard cleanup documents two named companies' own published process end to end; use it as a yardstick, since a specific company may combine, skip or reorder stages depending on the job.
Does California's register prove a company does good work?
No. CDPH's own list, published August 26, 2026, states plainly: "Registration as a Trauma Scene Waste Management Practitioner does not carry any expressed or implied endorsement by the Medical Waste Management Program, Department of the Public Health (Department) of the quality of work and/or service provided." Treat registration as a baseline legal check, not a quality rating.
What if my state doesn't have a register like California's?
This site tracks California's register specifically and does not track whether other states run an equivalent system. See who's registered for biohazard cleanup for the checkable signals to use instead, certification, insurance and the waste disposal permit, where a public register like California's is not available.
Is IICRC certification legally required?
No source in this site's research describes IICRC certification as legally required. Treat it as a voluntary, independently verifiable credential, alongside the checks above, not a substitute for a state registration check where one exists.
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