What Matrix Solutions does

Onterris (formerly Montrose Environmental Group) is a global environmental solutions company that delivers integrated advisory, testing and analysis, consulting and compliance, and treatment services across nine verticals: Chemical, Energy, Government, Infrastructure, Manufacturing, Mining & Minerals, Solid Waste, Technology & Digital Infrastructure, and Transportation. Operations span the U.S. (headquartered in North Little Rock, Arkansas), Canada (Toronto), and Australia (Sydney), with field offices and project sites aligned to local regulatory landscapes. The firm is led by CEO Vijay Manthripragada and has grown through the acquisition and retention of multiple subsidiaries — Emerging Compounds Treatment Technologies, Inc. (PFAS treatment), Montrose Air Quality Services, LLC, Montrose Environmental Solutions, Inc., and Montrose Water and Sustainability Services, Inc. — alongside a joint venture (Onterris Infinity) with Infinity Métis Corp.

The service portfolio covers the full environmental lifecycle: contaminated site assessment, remediation and closure; permitting and compliance across federal/state/provincial jurisdictions; ambient air monitoring; EPA-compliant stack and source emissions testing; leak detection and fugitive emissions management using Appendix K certified Optical Gas Imaging (OGI) technicians; water consulting, testing, and treatment; PFAS treatment solutions built on proprietary FOAM-X foam fractionation and Photo-Activated Reductive Fluorination (PRF) destruction technologies; emergency response and 24-hour spill containment; planning and natural resource management; community resiliency; and health, safety, and chemistry consulting. Notable named engagements include an embedded Environmental Director role for Metrolinx's Finch West Light Rail Transit project (delivered via Mosaic Transit Group under a P3 structure), the City of Toronto's Taylor-Massey Creek restoration, and PFAS groundwater treatment at a Michigan industrial facility achieving greater than 99.8% PFOS removal and 28 ng/L discharge compliance.

The business model is professional services, quote-based, and project-driven: revenue is generated through direct enterprise and government engagements, embedded environmental leadership contracts, specialized project delivery, and a 24-hour emergency response line (1-877-774-5525). GTM motion is enterprise field sales across multiple sectors and geographies. Distribution is direct — no channel partners — supplemented by formal Indigenous community partnerships in Canada (Infinity Métis Corp, Aseniwuche Winewak Nation) and industry coalition participation (CLEAN Initiative). The firm maintains an investor relations portal (ir.onterris.com) suggesting institutional or capital-markets orientation, though specific ownership structure is not disclosed in the source data. Note: the input's firmographic header references "Matrix Solutions" (Calgary, Canada, founded 1984), which does not match the body of evidence; this analysis is grounded in the Onterris-attributed substantive data, which is consistent throughout the detailed source blocks.

Name

Matrix Solutions

Legal name

Onterris, Inc.

Website

https://matrix-solutions.com

Company type

Private

Founded year

1984

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Onterris (formerly Montrose Environmental Group) is a global environmental solutions firm delivering integrated consulting, testing, compliance, and proprietary PFAS treatment services across nine industry verticals in the U.S., Canada, and Australia. It serves enterprise and government clients with EPA-certified emissions monitoring and contaminated-site remediation capabilities.

Ownership category

akta.pro rank

Product category

Environmental Consulting Services

NAICS

Environmental Consulting Services (541620), Other Scientific and Technical Consulting Services (54169), Geophysical Surveying and Mapping Services (541360)

akta.pro primary industry

Instrumentation, Controls & Automation Engineering Consulting (BPAHAIAM)

akta.pro secondary industry

Environmental Data Management Platforms (EHS/EMS, LIMS, ELN, Compliance Data Hubs) (EUAHAKAA)

Keywords

• Environmental consulting services
• Site assessment remediation
• PFAS treatment solutions
• Methane leak detection
• Stack emissions testing

Headquarters

HQ city

Calgary

HQ country

Canada

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Environmental Consulting Services: Advisory services for environmental compliance, planning, and remediation including site assessment, permitting, and regulatory strategy across multiple sectors including energy, government, infrastructure, and manufacturing
2. Testing and Analysis Services: Laboratory analysis, stack testing, ambient air monitoring, leak detection, and emissions testing services for industrial facilities with EPA-compliant methodologies
3. PFAS Treatment and Remediation: Water treatment solutions for PFAS-contaminated sites including FOAM-X foam fractionation and onsite destruction, serving industrial sites with discharge limit compliance requirements
4. Emergency Response Services: 24-hour spill response services including contaminated land remediation and environmental recovery operations

Go-to-market motion1 record

Distribution channels4 records

Marketing channels7 records

Core offering

Matrix Solutions is a Canadian-owned environmental and engineering consulting company that delivers integrated environmental solutions across advisory, testing, monitoring, and implementation services. The core offering includes site assessment and remediation, permitting and compliance, water consulting, ambient air monitoring, stack and source emissions testing, leak detection and fugitive emissions management, PFAS treatment, and 24-hour emergency response. Services are delivered through direct consulting engagements, embedded environmental leadership roles, and project-based work across the U.S., Canada, and Australia.

Product overview

Onterris is a global environmental solutions company offering an integrated platform of environmental consulting, testing/analysis, and treatment services. The company provides solutions across multiple environmental domains including contaminated land remediation, permitting and compliance, emergency response, air quality monitoring, water consulting and treatment, PFAS management, and methane detection. The service model is designed to be comprehensive, with testing and analysis, consulting and compliance, and treatment services available in-house to reduce friction between project phases. Key named offerings include Emergency Response (24-hour spill response), Site Assessment/Remediation/Closure, Water Consulting, Leak Detection and Fugitive Emissions Management (using Appendix K certified OGI technicians), Ambient Air Monitoring, Stack & Source Emissions Testing, Treatment Technologies (including FOAM-X foam fractionation and PRF destruction for PFAS), and Permitting & Compliance services.

Differentiator

Problem solved

Functional benefit

Brands

• FOAM-X: Foam fractionation technology for PFAS concentration and treatment

Products and services

• Emergency Response 24-hour spill response services for environmental incidents, including emergency chemical releases and spill containment, provided to industrial and government clients through a dedicated response line.
• Site Assessment, Remediation and Closure Turnkey site assessment, remediation and closure services for sites with soil, groundwater, surface water, sediment, soil gas, and air contamination.
• Planning & Natural Resource Management Environmental and cultural planning services integrated from project start, enabling faster project delivery with built-in environmental and cultural considerations.
• Water Consulting Water systems planning, compliance maintenance and operational resilience through deeper understanding of water systems for organizations across sectors.
• Leak Detection and Fugitive Emissions Management Methane and volatile organic compound (VOC) leak detection services for industrial facilities with thousands of components, using Optical Gas Imaging (OGI) Appendix K certified technicians meeting EPA regulatory standards.
• Ambient Air Monitoring Real-time emissions monitoring services for facilities under regulatory and community scrutiny, including fenceline and ambient air quality monitoring.
• Stack & Source Emissions Testing EPA-compliant stack testing and source emissions testing services for industrial facilities, ensuring regulatory compliance through accurate measurement at emission sources.
• Permitting & Compliance Environmental permitting services helping organizations navigate regulatory requirements and maintain compliance across federal, state, and local jurisdictions.
• Health, Safety & Chemistry Health, safety and chemistry consulting services supporting workplace safety and regulatory compliance for industrial clients.
• Treatment Technologies PFAS and contaminant treatment technologies including FOAM-X foam fractionation and Photo-Activated Reductive Fluorination (PRF) for PFAS destruction.
• Community Resiliency Services supporting community resilience in the face of environmental challenges and climate impacts.
• PFAS Treatment Solutions Integrated PFAS assessment, advisory and treatment services across surface water, groundwater, industrial process water, drinking water, and produced water, supported by design, engineering, installation, commissioning, and operations capabilities.

Named customers4 records

Segments9 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Five partnerships are on record, tiered core and minor.

• Infinity Métis Corp.coreStrategic or Co-development PartnerOnterris Infinity is a joint venture with Infinity Métis Corp. in the McMurray Métis community, delivering environmental solutions while supporting Indigenous economic development and reconciliation objectives.
• Aseniwuche Winewak NationcoreStrategic or Co-development PartnerRelationship agreement with Aseniwuche Winewak Nation to collaboratively deliver environmental services and build local capacity, supporting meaningful progress toward reconciliation while delivering project outcomes.
• Mosaic Transit GroupcoreImplementation/ SI/ Consulting PartnerOnterris served as Environmental Director for the Finch West Light Rail Transit project, providing leadership for Mosaic environmental and sustainability programs as part of a public-private partnership delivering 11km of transit infrastructure.
• MetrolinxcoreStrategic or Co-development PartnerMetrolinx owns the Finch West Light Rail Transit project. Onterris provided embedded environmental leadership and oversight supporting the project's environmental obligations and compliance requirements throughout the project lifecycle.
• CLEAN Initiative (Coalition for LNG Emission Abatement Toward Net Zero)minorStrategic or Co-development PartnerJapanese and South Korean utilities and trading houses joined the CLEAN Initiative to drive down methane emissions from the LNG supply chain. Onterris supports companies whose products end up in LNG with methane measurement and compliance services.

Scale indicators2 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• GHD: Australian-headquartered global engineering and environmental consultancy with overlapping environmental services, water treatment, and infrastructure environmental oversight capabilities.
• Stantec: Canadian-based global engineering, environmental, and project management firm with comparable environmental assessment, remediation, water, and infrastructure environmental oversight services.
• Tetra Tech: Global consulting and engineering firm specializing in water, environment, and sustainable infrastructure, with strong overlap in environmental compliance, PFAS treatment, and federal client work.
• Arcadis: Global design and consultancy with dedicated environmental and water practices; competes directly in contaminated site remediation, PFAS, and environmental compliance engagements.
• SLR Consulting: Global environmental and advisory consultancy with strong overlaps in site assessment, remediation, water, and air quality services across industrial and infrastructure clients.
• WSP Global: Canadian-headquartered global engineering and environmental consultancy with deep environmental services, contaminated site remediation, and PFAS capabilities. The most direct competitor among major environmental consulting platforms.
• ERM (Environmental Resources Management): Pure-play global environmental consultancy serving energy, infrastructure, and manufacturing clients with advisory, compliance, and sustainability services directly comparable to Onterris's offerings.

Emerging players

• Clean Harbors: North American environmental and industrial services provider with strong overlap in emergency spill response, contaminated site remediation, and PFAS-handling waste streams.

Broad incumbents

• AECOM: Large global infrastructure consulting firm with a substantial environmental services practice covering site assessment, remediation, permitting, and compliance across most of Onterris's sectors.
• Jacobs Solutions: Global professional services firm with environmental and water practices serving government, industrial, and infrastructure clients with capabilities overlapping Onterris's environmental solutions portfolio.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/itweetmatrix
• YouTubeyoutube.com/@onterris
• LinkedInlinkedin.com/company/onterris

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Matrix Solutions