Best Sewage Cleanup & Biohazard Companies in Baltimore, MD
Category 3 black-water remediation, sewage backup cleanup, trauma scene cleanup, and biohazard decontamination per IICRC S540.
4 firms indexed in Baltimore for this practice area.
Baltimore residents in Fells Point, Federal Hill, and Canton and beyond know the Inner Harbor as a local marker, but they also know what local weather can do to a home. Across the area, harbor tidal flooding, aging-rowhouse sewer backups, and heavy storms drive most water claims. Every firm ranked below serves Baltimore and the surrounding Maryland area, and each is scored on the same public-source MetaScore, drawn from BBB, Google, IICRC certification, EPA Lead-Safe status, Yelp, Angi, and HomeAdvisor. That means a water-damage, mold, fire, or storm-restoration company in Baltimore earns its rank on verifiable signals, not advertising spend. Whether you are dealing with a burst pipe, a flooded basement, storm-driven roof intrusion, or lingering moisture, the ranking below shows which Baltimore restoration companies carry the strongest independently verified track record. Because water and storm damage in Baltimore rarely waits for business hours, the firms below are ranked to help you shortlist a trusted, IICRC-informed responder before the next emergency, not during it.
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What are the best sewage cleanup & biohazard companies in Baltimore, MD?
As of July 2026, Catons Plumbing & Drain Service ranks #1 among the 4 sewage & biohazard firms indexed in Baltimore, MD, with a MetaScore of 100/100. Every firm below is scored on the same public-source signals (BBB, Google, IICRC, EPA Lead-Safe, Yelp, Angi, and HomeAdvisor).