What Roux Associates does

Roux Associates, Inc. is a privately held, full-service environmental consulting firm founded in 1981 and headquartered in Islandia, New York. The firm provides advisory, regulatory, and field services spanning environmental site assessment, remediation engineering, ecological and human health risk assessment, brownfield redevelopment, EHS compliance, litigation support, and insurance claims evaluation. Roux operates through three affiliated legal entities — Roux Associates, Inc.; Roux Environmental Engineering and Geology, D.P.C.; and Remedial Engineering, P.C. — and is led by CEO Sin Senh, PG with founder Paul Roux as Chairman.

The firm serves a diversified client base across private industrial/commercial enterprises (including Fortune 500 companies and a major petroleum chain's 1,000+ station divestiture portfolio), public sector agencies (Port Authority of NY/NJ, LA County Department of Public Health), law firms requiring expert testimony and litigation support, and insurance carriers seeking environmental liability and claims evaluation. Services are organized across 16 distinct lines including engineering & remediation, water resources, sediment management, ESG advisory, and Claims Management & Litigation Data Solutions. Roux differentiates through specialized domain expertise in emerging contaminants (PFAS, microplastics, 1,4-dioxane), board-certified scientific staff, and long-tenured regulatory relationships (USEPA Superfund, CERCLA, RCRA, ISRA, state DEP programs).

The business model is project-based professional services pricing with multi-year contracts; no public pricing exists. Distribution is direct enterprise engagement supported by 16 offices across the Northeast, Midwest, West Coast, and Southwest. The firm goes to market through industry conferences (NJICLE, Perrin, Battelle, BCONE), thought leadership content, professional association memberships, and referral-driven relationships. In June 2026 Roux acquired KPRG and Associates (12-person Midwest consultancy), and in 2025 expanded into Western New York with Rochester and Buffalo offices.

Name

Roux Associates

Legal name

Roux Associates, Inc.

Website

https://rouxinc.com

Company type

Private

Founded year

1981

Operating status

Operating

Headcount range

251–500 employees

Short description

Roux Associates is a privately held environmental consulting firm founded in 1981 that provides advisory, regulatory, and field services — including site assessment, remediation, litigation support, and risk assessment — to Fortune 500 industrials, law firms, public agencies, and insurers across 16 U.S. offices.

Ownership category

akta.pro rank

Product category

Environmental Consulting Services

NAICS

Environmental Consulting Services (54162), Management Consulting Services (54161), Other Scientific and Technical Consulting Services (541690)

SIC

Services-Engineering Services (8711), Services-Management Consulting Services (8742)

akta.pro primary industry

Risk, Compliance & Internal Controls Consulting (BPAHACAJ)

Keywords

• Environmental consulting services
• Site remediation solutions
• Brownfield redevelopment
• Ecological risk assessment
• Regulatory compliance consulting

Headquarters

HQ city

Islandia

HQ country

United States

HQ region

North America

Offices16 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: Professional consulting services providing advisory, regulatory, and field services that assess potential risks, assure compliance, and provide solutions to complex environmental challenges for private and public sector clients.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels4 records

Core offering

Roux Associates is a professional environmental consulting firm providing a broad range of advisory, regulatory, and field services to assess potential risks, assure compliance, and deliver solutions to complex environmental challenges. The firm applies scientific, technical, and managerial resources across sixteen service lines covering site assessment, brownfields and due diligence, public sector infrastructure support, EHS compliance, litigation and claims support, ecological and human health risk assessment, engineering and remediation, and water and sediment resources. Services are delivered through direct engagement with private sector industrial and commercial clients, public sector agencies, law firms, and insurance carriers across the United States.

Product overview

Roux Associates is an environmental consulting and management firm that provides advisory, regulatory, and field services. Rather than a unified software product, Roux offers a portfolio of professional consulting services organized across 16 distinct service lines covering environmental assessment, remediation, compliance, litigation support, and risk management. The firm applies scientific, technical, and managerial resources to help clients address environmental challenges across markets including energy, industrial, real estate, insurance, and public sector.

Differentiator

Problem solved

Functional benefit

Products and services

• Environmental, Health & Safety Compliance Services Expert advisory services guiding private and public sector clients through complex EHS compliance regulations across federal and state programs.
• Brownfields/Due Diligence Conversion of environmental liabilities into assets through site assessment, characterization, and remediation services supporting brownfield redevelopment and property transactions.
• Public Sector Services Environmental consulting and engineering services for public and municipal clients, including transit, rail, and resiliency design-build projects in the NYC metropolitan area.
• Litigation Support Persuasive in-depth scientific analyses and expert testimony for environmental, product liability, and PFAS litigation matters.
• Claims Management & Litigation Data Solutions Third-party administration claim services helping insurers and corporations manage environmental litigation risk and claim data.
• Ecological Risk Assessment Services Strategic, ecological risk-based remedial decision-making and sediment remedial investigations under various state environmental regulatory programs.
• Economic & Complex Analytics (ECA) Economic analysis evaluating the impact of environmental, product, and litigation risk for corporate and legal clients.
• Energy Services Environmental consulting and management services tailored for the energy industry, including site assessment for petroleum operations.
• Engineering & Remediation Services Design and implementation of in situ and ex situ remedial technologies for contaminated sites, including dual phase extraction, iron reactive mineral-based groundwater remediation, and combined source soil/groundwater remedies.
• Environmental, Social, & Governance (ESG) Advisory services helping clients understand the new era of corporate compliance and sustainability under ESG frameworks.
• Green & Sustainable Remediation Sustainable approaches to environmental challenges, including green remediation strategies that reduce footprint and lifecycle impact.
• Human Health Risk Assessment Services Evaluation of potential human health concerns associated with a spectrum of chemical exposure scenarios, applying toxicology and risk-based frameworks.
• Industrial Services Environmental compliance, permitting, and site services meeting the regulatory demands of industrial clients across manufacturing and related sectors.
• Insurance Support Fair evaluations of insurance liabilities and costs for environmental projects, supporting insurers and insureds in claims and coverage matters.
• Sediment Management Services Multi-criteria framework to define sustainable sediment solutions for contaminated sediment sites and waterway projects.
• Water Resources Scientific solutions for water resource issues, including stormwater management, wastewater treatment, and constructed treatment wetlands.

Quantifiable outcome

• Maintained Experience Modification Rate of 0.83 or less for five consecutive years, below industry standard
• +3 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• KPRG and Associates, Inc.majorStrategic or Co-development Partner · 11 June 2026Acquisition of KPRG and Associates, Inc., a 12-person environmental consulting firm with offices in Illinois and Wisconsin. KPRG provides environmental compliance, site investigation, remedial design, and expert witness services to energy, industrial, real estate, and municipal clients. The acquisition expands Roux's Midwest operations and adds two new Principals (Tim Stohner, PE and Mark Wilson) and two Technical Directors (Frank Santella, PG and Patrick Allenstein, PG). KPRG was incorporated in Indiana in 1993 and has been doing business as KPRG since 2004.

Scale indicators10 records

Recent moves7 records

Expansion highlights5 records

Broad incumbents

• Tetra Tech: Public consulting and engineering firm with deep water, environmental, and remediation practices. Tetra Tech directly competes with Roux in environmental site assessment, brownfield redevelopment, and water resources consulting across federal, state, and private clients.
• Arcadis: Global design and consultancy firm with a significant environment and water business. Arcadis is a broad incumbent that competes with Roux in environmental due diligence, remediation, and ESG advisory across North America.
• WSP: Global engineering professional services firm with strong environmental, earth, and water practices following the Golder and Wood E&I acquisitions. WSP is a broad incumbent offering overlapping services to Roux across site assessment, remediation, and environmental engineering.
• AECOM: Global infrastructure consulting firm with a large Environment business serving industrial, public sector, and remediation clients. AECOM is a much larger, publicly traded competitor operating across the same environmental consulting, site assessment, and remediation services as Roux.
• ERM (Environmental Resources Management): Global pure-play environmental, health, safety, and sustainability consultancy. ERM is a closely comparable incumbent specializing in environmental consulting, EHS compliance, and ESG advisory — directly overlapping with Roux's core service lines.
• Jacobs Solutions: Global professional services firm with a Critical Mission Solutions and Cyber & Intelligence business and a large environmental practice. Jacobs competes with Roux in environmental permitting, site investigation, and remediation for public and industrial clients.

Direct peers

• Haley & Aldrich: Mid-sized U.S. environmental and geotechnical engineering consulting firm with comparable size and service mix. Haley & Aldrich is a close direct peer competing with Roux in site investigation, remediation, and litigation support for industrial and public-sector clients.
• Montrose Environmental Group: Public environmental services company providing testing, advisory, and remediation services. Montrose is a relevant emerging public peer with similar focus on emerging contaminants (PFAS), site assessment, and remediation consulting, though operating at larger scale than Roux.
• Brown and Caldwell: Employee-owned environmental engineering and consulting firm focused on water and environmental services. Brown and Caldwell directly overlaps with Roux's water resources, environmental site assessment, and public-sector infrastructure practices.
• GEI Consultants: Mid-tier engineering and environmental consulting firm serving water, energy, and infrastructure clients. GEI is a closely sized competitor with overlapping services in environmental site assessment, remediation design, and water resources consulting.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/roux-associates
• Xx.com/RouxAssociates
• Facebookfacebook.com/RouxAssociatesInc

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Subsidiaries1 record

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 Roux Associates