Onterris Inc Dossier
Qualitative Analysis
Business overview
Onterris Inc. (formerly Montrose Environmental Group, Inc.) is a leading global pure-play environmental solutions company partnering with commercial and government organizations to solve complex challenges where environmental pressures, regulatory expectations, and operational risks intersect. The company operates through two complementary segments: Consulting and Treatment (supporting regulatory compliance, risk management, and on-the-ground execution) and Measurement and Analysis (delivering accurate, defensible environmental data). Onterris provides specialized services across critical sectors, including contaminated land and remediation, permitting and compliance, water consulting and treatment, and community resiliency.
Research as of 24 Jul 2026
Strategic Initiatives
Growth programs, investments, and their expected impact
Consolidating several distinctive environmental consulting, testing, and treatment brands—including Montrose Environmental, ECT2, CTEH, Enthalpy Analytical, and Epic Environmental—under the single global identity of Onterris.
Expected impact: Aims to simplify client engagement, improve operational efficiency, and accelerate organic cross-selling across regions.
Partnering with Greentown Labs, the world's largest climatetech incubator, as a Terawatt Partner to engage directly with over 250 startups.
Expected impact: Provides Onterris with early access to emerging technologies in water scarcity, resource efficiency, and environmental monitoring, while offering startups technical mentorship and commercialization pathways.
Mergers, Acquisitions & Partnerships
Recent deals and strategic collaborations
Recent Acquisitions
To expand environmental analytical testing and measurement capacity, specifically in hydrocarbon and organic chemical analysis for the oil and gas industries.
Financial impact: Bolstered the Measurement and Analysis segment's testing capabilities.
To expand air permitting and compliance consulting capabilities across the central United States, Gulf states, and Mountain states.
Financial impact: Expanded geographic footprint and added energy/petrochemical sector expertise.
To increase the company's environmental consulting presence in Canada, specializing in soil and vegetation surveys, reclamation planning, and environmental monitoring.
Financial impact: Strengthened Canadian market capabilities.
Strategic Partnerships
High. Connects Onterris with a network of over 250 climatetech startups to accelerate environmental innovation, validate new technologies, and support pilot deployments.
Terms: Terms of the Terawatt Partnership level were not publicly disclosed.