Enthalpy Analytical, Inc.
Enthalpy Analytical, part of publicly traded Onterris (NYSE: ONT), operates a national network of NELAP-accredited and DOD-certified environmental laboratories delivering EPA-compliant air, water, soil, and emissions testing services to industrial, energy, infrastructure, government, and chemical clients across the U.S., Canada, and Australia.
- Company typePublic
- Founded2012
- HeadquartersIrvine, United States
- Headcount1–10
- GTM typeB2B
- OfferingServices
What Enthalpy Analytical, Inc. does
Enthalpy Analytical, Inc. is an environmental services company that operates a national network of NELAP-accredited and DOD-certified environmental laboratories, delivering EPA-compliant air quality, water, soil, and source emissions testing services. Its service scope spans stack testing and source emissions measurement for industrial facilities, leak detection and fugitive emissions management, water consulting and treatment, contaminated land remediation, permitting and compliance support, environmental emergency response, and health, safety, and chemistry services. The company serves environmental consulting firms, government agencies, and industrial and energy organizations — with adjacent reach into infrastructure, chemical and manufacturing, mining, solid waste, technology and digital infrastructure, and transportation end markets.
The underlying technology is grounded in accredited laboratory instrumentation and EPA-defined analytical methodologies rather than proprietary software platforms; the company's core operational differentiator is the integration of field programs, laboratory testing, and technical/engineering/regulatory expertise into a single field-to-decision workflow. Revenue is generated through a B2B professional services model under quote-based, project-specific pricing tied to scope, volume, and complexity, delivered through direct consultative sales, a national laboratory network, a client login portal, and inside-sales quote request flows. Marketing emphasizes technical thought leadership — including the Onterris Outlook Report and topical briefs on PFAS, methane, and emerging contaminants — over digital self-serve funnels.
Enthalpy Analytical operates from headquarters in Irvine, California with additional laboratory and operational presence in Raleigh, North Carolina and Little Rock, Arkansas. It is a wholly-owned subsidiary of Onterris, Inc. (formerly Montrose Environmental Group), a NYSE-listed company (ticker ONT, formerly MEG) that on May 4, 2026 unified its portfolio brands — ECT2, CTEH, Enthalpy Analytical, and Epic Environmental — under the Onterris identity, enabling cross-portfolio service delivery across the U.S., Canada, and Australia.
Enthalpy Analytical, Inc. firmographics
Firmographics- Name
- Enthalpy Analytical, Inc.
- Legal name
- Onterris, Inc.
- Website
- https://enthalpy.com
- Company type
- Public
- Founded year
- 2012
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Enthalpy Analytical, part of publicly traded Onterris (NYSE: ONT), operates a national network of NELAP-accredited and DOD-certified environmental laboratories delivering EPA-compliant air, water, soil, and emissions testing services to industrial, energy, infrastructure, government, and chemical clients across the U.S., Canada, and Australia.
- Ownership category
- akta.pro rank
Enthalpy Analytical, Inc. industry classification
Industry- Product category
- Environmental Laboratory Testing and Analytical Services
- NAICS
- Testing Laboratories and Services (54138), Environmental Consulting Services (541620)
- SIC
- Services-Testing Laboratories (8734)
- akta.pro primary industry
- Continuous Emissions Monitoring Systems (CEMS) & Stack Testing (EUAHADAA)
- akta.pro secondary industries
- Stack/Source Emissions Testing & CEMS Support (EUAHACAB), Laboratory Testing & Analytical Services (in-house/contract labs; microbiology, metals, organics) (EUANAJAB), Leak Detection, Emissions & LDAR Testing (OGI, methane, fugitive emissions) (EUAEAHAL), Wastewater & Industrial Effluent Monitoring (NPDES/Permit Compliance) (EUAHACAD), Groundwater Monitoring & Well Sampling (Monitoring Wells, Plumes) (EUAHACAE), Site Assessment & Remediation (Phase I/II, Cleanup Oversight) (BPAHAJAC)
Keywords
Where Enthalpy Analytical, Inc. is headquartered
LocationHeadquarters
- HQ city
- Irvine
- HQ country
- United States
- HQ region
- North America
Offices5 records
Markets served
Enthalpy Analytical, Inc. business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales
Revenue model
- Environmental Laboratory Testing Services: Laboratory analysis and testing services for environmental media including air, water, soil, and other environmental samples. Services support regulatory compliance, risk assessment, and project decision-making for clients.
- Environmental Consulting and Technical Services: Scientific expertise, engineering services, and regulatory data support integrated with laboratory testing. Includes contaminated land remediation, permitting and compliance, planning and emergency response, and water consulting and treatment.
Go-to-market motion1 record
Distribution channels4 records
Marketing channels4 records
Enthalpy Analytical, Inc. product offering
Product offeringCore offering
Enthalpy Analytical operates a national network of NELAP-accredited and DOD-certified environmental laboratories that deliver testing and analytical services for air, water, soil, and other environmental media. These laboratory services are integrated with field programs, technical insight, engineering, permitting, and regulatory expertise to provide defensible environmental data for regulatory compliance and operational decision-making. The company also offers EPA-compliant stack testing, source emissions testing, leak detection, fugitive emissions management, water consulting/testing/treatment, contaminated land remediation, permitting and compliance, and emergency response planning and recovery services.
Product overview
Enthalpy Analytical, now operating as Onterris, is a global environmental solutions company that offers a unified portfolio of environmental services. The company's core offering is its national network of accredited environmental laboratories (formerly Enthalpy Analytical) that deliver testing and analytical services for air, water, soil and other environmental media. These laboratory services are integrated into a holistic system linking field programs, laboratory testing and technical insight with engineering, permitting and regulatory expertise. The product portfolio includes Testing & Analysis as the core laboratory service, complemented by specialized solutions including Stack Testing and Source Emissions Testing, Leak Detection and Fugitive Emissions Management, Water Consulting/Testing/Treatment, Contaminated Land & Remediation, Permitting & Compliance, Planning/Preparedness/Response & Recovery, Health/Safety & Chemistry, Community Resiliency, Natural Resources, and Treatment Technologies. The rebranding unified previous brands (ECT2, CTEH, Enthalpy Analytical, Epic Environmental) under the Onterris identity to provide one accountable partner for comprehensive environmental challenges.
Differentiator
Problem solved
Functional benefit
Products and services
- Testing & Analysis Comprehensive environmental testing and analytical services providing accurate, defensible data for operational confidence across air, water, soil, and other environmental media; used by industrial, energy, government, infrastructure, chemical, mining, solid waste, technology, and transportation clients for compliance and project decision-making.
- Stack Testing and Source Emissions Testing Services EPA-compliant stack testing services for industrial facilities to measure and verify emissions, supporting regulatory compliance and reporting.
- Leak Detection and Fugitive Emissions Management Detection and monitoring services for managing fugitive emissions in complex industrial facilities, including leak detection and emissions management.
- Water Consulting, Testing & Treatment Water consulting, testing, and treatment solutions for organizations addressing water quality challenges across environmental and industrial applications.
- Contaminated Land & Remediation Remediation services for contaminated land sites, including assessment and cleanup planning.
- Permitting & Compliance Environmental permitting and regulatory compliance support services for organizations managing environmental obligations.
- Planning, Preparedness, Response & Recovery Emergency response planning, preparedness, and recovery services, including environmental incident response for industrial and government clients.
- Health, Safety & Chemistry Health, safety, and chemistry services for industrial and environmental applications, supporting workplace safety and chemical compliance.
- Community Resiliency Services supporting community resilience against environmental challenges, including preparedness and response capabilities for municipalities and organizations.
- Natural Resources Natural resources management and assessment services for organizations operating in resource-extraction and land-management contexts.
- Treatment Technologies Environmental treatment technologies applied to various contaminants and waste streams across industrial and remediation projects.
- Advanced Environmental Laboratory Services National network of accredited (NELAP) and DOD-certified environmental laboratories delivering accurate, defensible data as part of a holistic environmental solutions system integrated with field programs and regulatory expertise.
Quantifiable outcome
- Accurate, defensible environmental data for regulatory compliance and operational confidence
Companies that use Enthalpy Analytical, Inc.
Customer profileNamed customers3 records
Segments8 records
Ideal customer profiles3 records
Enthalpy Analytical, Inc. technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Enthalpy Analytical, Inc. partnerships and signals
Strategic signalScale indicators3 records
Recent moves7 records
Expansion highlights6 records
Enthalpy Analytical, Inc. competitors and assessment
Company assessmentDirect peers
- ALS Limited: ALS Limited is one of the largest global environmental and analytical testing services companies, operating accredited laboratories across multiple continents. It directly competes with Onterris/Enthalpy in air, water, and soil testing for industrial, mining, and government clients.
- Eurofins Scientific: Eurofins is a global leader in bioanalytical and environmental testing services, with a substantial U.S. environmental laboratory footprint (including the former TestAmerica). It competes directly in air, water, and soil analytical services and stack testing support.
- Pace Analytical Services: Pace Analytical is a major U.S.-based environmental and life sciences testing laboratory network with NELAP-accredited facilities. It competes with Enthalpy Analytical in environmental analytical services, drinking water, and industrial hygiene testing.
Broad incumbents
- SGS SA: SGS is one of the world's largest inspection, verification, testing, and certification companies with a global environmental testing offering. It overlaps with Onterris in air quality, water testing, and emissions measurement for industrial and energy clients.
- Bureau Veritas: Bureau Veritas is a global testing, inspection, and certification firm with a significant environmental services division (including the former Maxxam Analytics). It provides overlapping air emissions, water, and soil testing services to industrial and government markets.
- Intertek: Intertek is a global TIC (testing, inspection, certification) provider with environmental and emissions monitoring services for the energy and industrial sectors. It is a broad incumbent overlapping with Onterris in stack testing and ambient air quality.
- Clean Harbors Environmental Services: Clean Harbors is a North American environmental services company providing waste management, emergency response, and field services, with growing analytical capabilities. It overlaps with Onterris in remediation, emergency response, and field-based environmental services.
- Element Materials Testing: Element is a global testing services platform with environmental, materials, and product testing capabilities. It serves overlapping industrial and energy clients and competes in environmental analytical services in select verticals.
Emerging players
- Republic Services Environmental Solutions: Republic Services has expanded environmental services and compliance support for industrial and solid waste clients, including some analytical and emissions work. It is an emerging player in adjacent environmental services that overlap with Onterris' solid waste and remediation segments.
- Tetra Tech: Tetra Tech is a leading consulting and engineering firm with strong water, environment, and sustainable infrastructure practices. It overlaps with Onterris in water consulting, permitting, and environmental assessment for government and industrial clients.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Enthalpy Analytical, Inc. social profiles
Digital presenceEnthalpy Analytical, Inc. compliance and trust
Trust signalCompliance2 records
Enthalpy Analytical, Inc. financial estimates
Financial estimateRevenue estimate
Valuation estimate
Enthalpy Analytical, Inc. leadership team
Management profileNumber of profiles
Profiles1 record
Enthalpy Analytical, Inc. subsidiaries and ownership
Company hierarchySubsidiaries4 records
Enthalpy Analytical, Inc. funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Enthalpy Analytical, Inc. M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Enthalpy Analytical, Inc.
What does Enthalpy Analytical, Inc. do?
Enthalpy Analytical operates a national network of NELAP-accredited and DOD-certified environmental laboratories that deliver testing and analytical services for air, water, soil, and other environmental media. These laboratory services are integrated with field programs, technical insight, engineering, permitting, and regulatory expertise to provide defensible environmental data for regulatory compliance and operational decision-making. The company also offers EPA-compliant stack testing, source emissions testing, leak detection, fugitive emissions management, water consulting/testing/treatment, contaminated land remediation, permitting and compliance, and emergency response planning and recovery services.
Is Enthalpy Analytical, Inc. a public or private company?
Enthalpy Analytical, Inc. is a public company. It is classified as public and is currently operating.
When was Enthalpy Analytical, Inc. founded?
Enthalpy Analytical, Inc. was founded in 2012. It employs 1 to 10 people.
Where is Enthalpy Analytical, Inc. based?
Enthalpy Analytical, Inc. is headquartered in Irvine, United States, in the North America region.
How does Enthalpy Analytical, Inc. make money?
Two revenue lines are on record. Environmental Laboratory Testing Services are the primary driver. The others are environmental Consulting and Technical Services.
Who are Enthalpy Analytical, Inc.'s main competitors?
Direct peers on record are ALS Limited, Eurofins Scientific and Pace Analytical Services. Broad incumbents are SGS SA, Bureau Veritas, Intertek, Clean Harbors Environmental Services and Element Materials Testing. Emerging players are Republic Services Environmental Solutions and Tetra Tech.
Does Enthalpy Analytical, Inc. have an API?
No public API is recorded for Enthalpy Analytical, Inc..
What industry is Enthalpy Analytical, Inc. in?
Enthalpy Analytical, Inc.'s product category is Environmental Laboratory Testing and Analytical Services. Its primary akta.pro industry code is EUAHADAA, Continuous Emissions Monitoring Systems (CEMS) & Stack Testing, with a secondary code of EUAHACAB, Stack/Source Emissions Testing & CEMS Support. Its NAICS code is 54138 and its SIC code is 8734.