AMRT
Definition
AMRT stands for Applied Microbial Remediation Technician, the IICRC's core certification for hands-on mold and sewage remediation. Technicians must hold the WRT water certification first. It is voluntary, not a state license.
What it means
AMRT is an IICRC certification for people who do mold and sewage remediation. The IICRC says it covers mold and sewage remediation techniques for people in property management, restoration and indoor environmental quality work, with an emphasis on performing remediation while protecting the health and safety of workers and occupants.
The prerequisite is the WRT water damage certification, so AMRT holders also have water training. The course is built around the ANSI/IICRC S520 mold standard. Like all IICRC certifications, it belongs to the individual and must be renewed.
Why it matters to your home and your bill
When a mold job is larger than about 10 square feet, EPA’s rule of thumb for calling a pro, AMRT is one of the first things to ask about. Ask which technicians on your crew hold it, not just whether the owner does. Then check the company on the IICRC Global Locator. AMRT is not a license. In Florida, Texas, New York and Louisiana, mold remediation requires a state license, and the license is what makes the work legal there. Our page on mold licensing by state shows where to check.
Sources
- Applied Microbial Remediation Technician (AMRT), Institute of Inspection, Cleaning and Restoration Certification (accessed 2026-10-19)
- ANSI/IICRC S520 Standard for Professional Mold Remediation, Institute of Inspection, Cleaning and Restoration Certification (accessed 2026-10-19)
- IICRC Global Locator, Institute of Inspection, Cleaning and Restoration Certification (accessed 2026-10-19)
Updated October 19, 2026. Drafted with AI assistance and edited by Vincent Wallace. All glossary terms