Best Sewage Cleanup & Biohazard Companies in Derry, NH
Category 3 black-water remediation, sewage backup cleanup, trauma scene cleanup, and biohazard decontamination per IICRC S540.
1 firm indexed in Derry for this practice area.
Derry residents in Downtown, East Derry, and Broadview and beyond know Beaver Lake as a local marker, but they also know what local weather can do to a home. Across the area, Beaver Brook flooding and harsh-winter ice-dam damage are the leading local water risks. Every firm ranked below serves Derry and the surrounding New Hampshire 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 Derry 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 Derry restoration companies carry the strongest independently verified track record. Because water and storm damage in Derry 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.
More about Derry: Wikipedia · Official city site
What are the best sewage cleanup & biohazard companies in Derry, NH?
As of July 2026, Household Environmental, LLC ranks #1 among the 1 sewage & biohazard firm indexed in Derry, NH, with a MetaScore of 94/100. Every firm below is scored on the same public-source signals (BBB, Google, IICRC, EPA Lead-Safe, Yelp, Angi, and HomeAdvisor).