Biohazard & Trauma Cleanup in Maryland
55 certified biohazard cleanup firms on file in Maryland. Credentials below are verified against IICRC's Certified Firm registry.
Cities with 3+ certified firms
Also served (1–2 firms)
Bel Air, Beltsville, Cockeysville, Glen Burnie, Hunt Valley, Frederick, Elkridge, Millersville, Lanham, Cumberland, Clinton, Frederick,, Elkton, Charlestown, Bowie, Kensington, Grasonville, Kingsville, Lexington Park, Oakland, Perry Hall, Randallstown, Riverdale, Salisbury, Stevensville, Sykesville, Tracys Landing, Union Bridge, Waldorf, Walkersville, Westminster
What Maryland biohazard cleanup firms are certified in
Certification counts across the 55 Maryland firms on file for this work. These are the credentials on record with the issuing body — not what the firms advertise.
| Credential | What it covers | Maryland firms |
|---|---|---|
| TCST | Trauma and Crime Scene Technician | 55 |
| WRT | Water Damage Restoration Technician | 54 |
| AMRT | Applied Microbial Remediation Technician | 53 |
| FSRT | Fire and Smoke Damage Restoration Technician | 51 |
| ASD | Applied Structural Drying Technician | 49 |
| OCT | Odor Control Technician | 49 |
54 of these firms hold three or more certifications; 0 appear in two independent registries and carry a cross-verified marker; 25 operate under a national franchise brand, which is separately owned and separately credentialled from the brand itself.
Every Maryland firm we hold a record for, A–Z by city →
Biohazard Cleanup in Maryland: common questions
Is biohazard cleanup work licensed in Maryland?
No US state licenses biohazard cleanup work specifically. General contractor registration may apply to any rebuild that follows. The checkable credential is IICRC certification, which is what every listing on this page is verified against.
What certifications do Maryland biohazard cleanup firms actually hold?
Across the 55 Maryland firms on file for this work, the most common credentials are TCST (Trauma and Crime Scene Technician) held by 55 firms, WRT (Water Damage Restoration Technician) held by 54 firms, AMRT (Applied Microbial Remediation Technician) held by 53 firms, FSRT (Fire and Smoke Damage Restoration Technician) held by 51 firms. 54 hold three or more certifications. Certification describes verified training rather than the services a firm chooses to advertise.
How were these Maryland firms verified?
Every certification was checked against IICRC's own Certified Firm registry, not against the firm's marketing. 0 of the 55 appear in two independent registries and carry a cross-verified marker. Checked August 14, 2026.
Which Maryland cities have the most biohazard cleanup firms?
Baltimore leads with 4, followed by Gaithersburg (4), Rockville (4), Halethorpe (3). We build a page wherever a city has three or more certified firms; smaller markets are listed below that without their own page.