The Institute of Hazardous Materials Management (IHMM), a not-for-profit organization founded in 1984, has been protecting the environment and the public’s health, safety, and security through the administration of credentials recognizing professionals who have demonstrated a high level of knowledge, expertise, and excellence in the management of hazardous materials.

Over 15,000 homeland security, environmental protection, engineering, health sciences, transportation, and public safety professionals have earned IHMM’s accredited Certified Hazardous Materials Manager (CHMM) credential.


Phone: 301-984-8969 

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General Information

Professional certifications boost your career, validate your achievement, and recognize your commitment to public safety and the environment. The Institute of Hazardous Materials Management (IHMM) offers the hazmat industry’s premier accredited professional credentials—the Certified Hazardous Materials Manager (CHMM®) and the Certified Hazardous Materials Practitioner (CHMP®)—credentials that recognize your expertise and open up new possibilities for you to make a significant impact on public health and safety, the environment, your community, and your country.

Understanding the certification process is the first step in achieving your credential.

Apply for a credential online and submit supporting documentation. Complete and submit your application online. You may submit your supporting documentation before or after your complete your application. After an initial review, IHMM will contact your regarding of any missing documents. Upon being found eligible to take the examination, you will receive an approval email on how to register through our testing interface.

Register to take the examination. After receiving the approval email, you may register and pay for the examination online. You may register anytime during your 12 months of eligibility. After completing registration, you will receive an email that will explain what materials you may bring or may not bring to the examination. Note: You do not contact testing centers directly. All registrations are done through our testing interface after you are found eligible to take the examination.

Complete the examination. All examinations are held through the proctored Kryterion HOST® network, at over 450 computer-testing locations world-wide. The examinations are offered at anytime, however, most testing centers will likely be closed for holidays and each testing center has its own hours of operation and seating availability. Results will be delivered via email about three weeks after your examination.

Pay an annual maintenance fee. After passing the examination, you must pay your first year fee and submit your Code of Ethics. Upon receipts of those items, IHMM will authorize use of your credential. Every credential holder must pay their annual maintenance fee by their anniversary date each year to remain in good standing.

Maintaining your credential. IHMM requires recertification every five years to ensure that certificants retain their currency with the advancements in technology and changes in compliance requirements that occur frequently in hazardous materials management and related fields.