Top 22 Environmental Regulatory Compliance Companies

Environmental regulatory compliance companies focus on helping organizations meet environmental laws and manage their ecological impact. They address sustainability challenges relating to air quality, waste management, and energy efficiency. Firms operating in this sector provide consulting and technical support across various industries, including manufacturing, construction, and energy. As stakeholders increasingly prioritize sustainability, the industry is evolving with technology-driven solutions and stricter regulatory frameworks. Notably, organizations in this space engage in proactive and preventative measures to ensure compliance, which highlights the growing importance of reputation and responsibility in business operations.

This list features 22 environmental regulatory compliance companies, spanning small teams to thousand-strong firms. Headquartered in locations like the United States, the UK, and Canada, these companies were founded from the late 1960s to the early 2000s. They specialize in areas such as air quality management, sustainability consulting, and ecological assessments. The variety in operational scale and geographic presence allows these companies to provide tailored regulatory compliance services to a wide clientele, including public agencies and private enterprises.

Continue reading to discover the top environmental regulatory compliance companies.

Top 22 Environmental Regulatory Compliance Companies

1. Erm

• Website: erm.com
• Ownership type: Private Equity
• Headquarters: London, England, United Kingdom (UK)
• Employee distribution: United States (USA) 33%, United Kingdom (UK) 14%, Australia 8%, Other 45%
• Latest funding: May 2021
• Founded year: 1971
• Headcount: 5001-10000
• LinkedIn: erm

ERM (Environmental Resources Management) is a consulting firm based in London, UK, founded in 1971. With over 10,000 employees, ERM specializes in sustainability and environmental services, providing consulting to businesses across multiple sectors, including chemical, financial services, manufacturing, and oil and gas. The firm assists organizations in addressing sustainability challenges, implementing effective strategies, and achieving compliance with environmental regulations. ERM's services include compliance and auditing, carbon markets, and climate strategy, making them a key player in the environmental regulatory compliance space. Their global footprint spans over 40 countries, allowing them to leverage local expertise while addressing international sustainability issues. ERM also engages in thought leadership through their Sustainability Institute, which generates insights to help businesses navigate the evolving landscape of sustainability and compliance.

2. SWCA Environmental Consultants

• Website: swca.com
• Ownership type: Private
• Headquarters: Phoenix, Arizona, United States (USA)
• Employee distribution: United States (USA) 99%
• Founded year: 1981
• Headcount: 1001-5000
• LinkedIn: swca-environmental-consultants

SWCA Environmental Consultants, founded in 1981 and based in Phoenix, Arizona, is a private environmental consulting firm with over 1,500 employees. The company provides a comprehensive suite of services aimed at assisting clients in navigating environmental compliance and promoting sustainability. Their expertise spans various sectors, including land development, energy, and transportation. SWCA's services include air quality management, cultural resource management, environmental permitting, and spill response, among others. The firm has a strong track record of working with both government entities and private organizations, ensuring that projects meet regulatory requirements while also addressing ecological and cultural considerations. SWCA is 100% employee-owned, which fosters a culture of investment in the company's success and client satisfaction. Their commitment to sustainability is evident in their operational practices, as they are powered entirely by renewable electricity and actively engage in community support initiatives.

3. Apex Companies, LLC

• Website: apexcos.com
• Ownership type: Venture Capital
• Headquarters: Rockville, Maryland, United States (USA)
• Employee distribution: United States (USA) 99%, Other 1%
• Latest funding: February 2023
• Founded year: 1988
• Headcount: 1001-5000
• LinkedIn: apex-companies-llc

Apex Companies, LLC, founded in 1988 and based in Rockville, Maryland, is a consulting and engineering firm that specializes in environmental solutions, water management, and infrastructure services. With a workforce of approximately 1,349 employees, Apex serves a wide range of clients, including public agencies and private businesses. The firm provides expert guidance on regulatory compliance, project management, and sustainability initiatives. Their service portfolio includes environmental assessments, stormwater management, and health and safety compliance, showcasing their comprehensive approach to environmental challenges. Apex is also committed to community involvement and corporate social responsibility, reflecting their dedication to fostering a sustainable future. Recently, they have expanded their capabilities through acquisitions, enhancing their expertise in various sectors such as energy, healthcare, and transportation.

4. Pinchin in Canada

• Website: pinchin.com
• Ownership type: Private Equity
• Headquarters: Mississauga, Ontario, Canada
• Employee distribution: Canada 97%, United States (USA) 2%
• Latest funding: February 2022
• Founded year: 1981
• Headcount: 1001-5000
• LinkedIn: pinchin-ltd

Pinchin Ltd. is an environmental consulting firm based in Mississauga, Ontario, Canada, established in 1981. The company provides a comprehensive range of services that include engineering, building science, and health and safety consulting. Pinchin assists businesses, government entities, and homeowners in managing environmental risks and ensuring compliance with health and safety regulations. Their service offerings cover critical areas such as emissions reduction, environmental due diligence, and remediation, as well as hazardous materials management and indoor environmental quality assessments. With a workforce of over 850 employees and operations primarily in Canada, Pinchin is dedicated to helping clients navigate the complexities of environmental regulations while promoting sustainability. The firm also emphasizes corporate social responsibility and has initiatives aimed at community engagement and environmental protection.

5. Environmental Science Associates

• Website: esassoc.com
• Ownership type: Private
• Headquarters: San Francisco, California, United States (USA)
• Employee distribution: United States (USA) 99%, Other 1%
• Founded year: 1969
• Headcount: 501-1000
• LinkedIn: environmental-science-associates

Environmental Science Associates (ESA) is an environmental consulting firm based in San Francisco, California, founded in 1969. With a workforce of approximately 715 employees, ESA operates primarily in the United States, providing a wide array of services that include air quality management, biological resource assessments, and climate change resilience planning. The firm serves a variety of clients, including federal and state agencies, municipalities, and private sector organizations. ESA is particularly noted for its expertise in environmental permitting and compliance, which is essential for clients looking to adhere to regulatory standards. Their project portfolio showcases significant involvement in areas such as natural resource management, community development, and environmental review, demonstrating their commitment to sustainable practices and effective regulatory navigation. ESA is also 100% employee-owned, fostering a culture of accountability and engagement among its staff.

6. Erg

• Website: erg.com
• Ownership type: Corporate
• Headquarters: Concord, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 98%, Other 2%
• Latest funding: $83.0M, October 2010
• Founded year: 1984
• Headcount: 501-1000
• LinkedIn: eastern-research-group-erg-

Erg (Eastern Research Group Inc.), founded in 1984 and based in Concord, Massachusetts, is an environmental consulting firm with a workforce of approximately 917 employees. The company provides a wide array of services aimed at enhancing air quality, promoting clean transportation, and safeguarding public health. Erg's clientele includes various government agencies and organizations that seek to tackle environmental issues and foster sustainability. Their expertise spans multiple areas, including air quality modeling, emissions inventory development, and regulatory support for compliance with environmental laws. Erg has been involved in significant projects, such as supporting the U.S. Environmental Protection Agency in developing greenhouse gas emissions models and assisting with air quality improvement efforts across the country. Their focus on regulatory compliance is evident in their work on permitting, compliance monitoring, and training for regulated communities, making them a vital resource in the environmental consulting industry.

7. Trinity Consultants

• Website: trinityconsultants.com
• Ownership type: Private Equity
• Headquarters: Dallas, Texas, United States (USA)
• Employee distribution: United States (USA) 93%, Canada 3%, Other 4%
• Latest funding: June 2021
• Founded year: 1974
• Headcount: 1001-5000
• LinkedIn: trinity-consultants

Trinity Consultants, based in Dallas, Texas, is a consulting firm that specializes in environmental consulting, engineering, and technology solutions. Established in 1974, the company has developed a robust portfolio of services aimed at assisting businesses in navigating the complexities of environmental regulations and enhancing their sustainability efforts. Trinity provides a variety of offerings, including environmental assessments, compliance solutions, software tools, and training programs tailored to industries such as manufacturing, energy, and life sciences. With a workforce of approximately 1,839 employees, Trinity has a significant presence in the United States and a growing footprint in Canada and other regions. Their commitment to addressing environmental challenges and supporting clients in achieving compliance goals positions them as a relevant entity in the environmental regulatory compliance sector.

8. Beveridge & Diamond PC

• Website: bdlaw.com
• Ownership type: Private
• Headquarters: Washington, D.C., District Of Columbia, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1974
• Headcount: 201-500
• LinkedIn: beveridge-%26-diamond-pc

Beveridge & Diamond PC is a Washington, D.C.-based law firm founded in 1974, specializing in environmental law. With a workforce of approximately 290 employees, the firm operates multiple offices across the United States. Beveridge & Diamond provides comprehensive legal services to clients in sectors such as chemicals, energy, and agriculture, assisting them in navigating the intricate web of environmental regulations and compliance requirements. Their practice areas include emissions permitting, pipeline safety, renewable energy development, and water regulation, among others. The firm has earned recognition for its expertise, including a Band 1 ranking in the 2024 edition of Chambers and Partners – USA. Their commitment to sustainability and community responsibility further underscores their role in the environmental sector, as they actively engage in pro bono work and promote diversity and inclusion within the firm.

9. Envirochem Services Inc.

• Website: envirochem.com
• Ownership type: Private
• Headquarters: North Vancouver, British Columbia, Canada
• Employee distribution: Canada 100%
• Founded year: 1984
• Headcount: 11-50
• LinkedIn: envirochem-services-inc-

Envirochem Services Inc. is an environmental consulting firm based in North Vancouver, British Columbia, Canada. Founded in 1984, the company has built a solid reputation in the environmental consulting industry, providing a wide range of services that include environmental assessments, EHS management, and technology solutions. With a team of professionals that includes engineers, scientists, and technologists, Envirochem is dedicated to delivering practical and innovative solutions tailored to the needs of their clients. They serve a variety of sectors, such as agriculture, mining, oil and gas, and government, showcasing their ability to address complex environmental challenges across different industries. The firm prides itself on its commitment to health and safety, ensuring that their operations align with the highest standards of compliance and ethical practices. Envirochem has successfully completed over 5000 projects, reflecting their extensive experience and capability in the field.

10. EnviroSolutions & Consulting

• Website: envirosc.com
• Ownership type: Private
• Headquarters: Singapore
• Employee distribution: Indonesia 36%, Singapore 36%, Hong Kong S.A.R 14%, Other 14%
• Founded year: 2003
• Headcount: 51-200
• LinkedIn: envirosolutions-%26-consulting-pte-ltd

EnviroSolutions & Consulting (ESC) is a private consulting firm based in Singapore, founded in 2003. The company specializes in environment, health, safety, and sustainability solutions, catering to both businesses and government agencies. With a workforce of around 90 employees, ESC operates across several countries in Asia, including Indonesia, Malaysia, Hong Kong, and Vietnam. The firm has built a reputation for its comprehensive services, which include planning and assessment, EHS and risk management, waste management, and sustainability initiatives. ESC has been involved in high-profile projects, such as the Kallang Gasworks Remediation and various renewable energy initiatives, showcasing their expertise in managing environmental risks. They are recognized for their innovative approaches and have established strong relationships with regulatory authorities, enhancing their capability to assist clients in navigating complex compliance landscapes.

11. Environmental Assurance (Pty) Ltd

• Website: envass.co.za
• Ownership type: Private
• Headquarters: Pretoria, Gauteng, South Africa
• Employee distribution: South Africa 90%, Tanzania 10%
• Founded year: 2004
• Headcount: 11-50
• LinkedIn: environmental-assurance-pty-ltd-

Environmental Assurance (Pty) Ltd, operating under the ENVASS Group, is an environmental consultancy firm based in Pretoria, South Africa. Founded in 2004, the company specializes in providing a comprehensive range of environmental consulting services aimed at ensuring regulatory compliance and improving environmental performance for clients across various sectors, including mining, energy, and agriculture. With a team boasting over 80 years of combined experience, ENVASS is dedicated to delivering practical and cost-effective solutions tailored to the unique needs of each client. Their services include compliance audits, environmental management, ISO management systems, and training programs, all designed to help organizations navigate the complexities of environmental regulations. The firm is also recognized for its commitment to sustainability and operates with a focus on creating positive environmental and social impacts. ENVASS has established a presence not only in South Africa but also in neighboring countries, reflecting its regional influence in the environmental consultancy market.

12. Lsa

• Website: lsa.net
• Ownership type: Private
• Headquarters: Irvine, California, United States (USA)
• Employee distribution: United States (USA) 95%, Mexico 3%, Other 1%
• Founded year: 1976
• Headcount: 201-500
• LinkedIn: lsa-associates-inc-

LSA Associates, Inc., founded in 1976 and based in Irvine, California, is an environmental consulting firm that provides a wide range of services related to air quality, climate change, and sustainability. With a workforce of over 500 employees, LSA operates multiple offices across California, allowing them to serve a broad client base. The firm assists clients in navigating environmental regulations, conducting comprehensive analyses, and ensuring compliance with laws such as CEQA and NEPA. Their project portfolio includes significant undertakings like the Orange County Sustainable Communities Strategy and the Apple Campus 2 Project EIR. LSA is also proactive in promoting sustainability within its operations, as evidenced by initiatives like their Green Team, which engages employees in environmental activities. This commitment to sustainability and regulatory compliance makes LSA a notable player in the environmental consulting industry.

13. Barr Engineering Co.

• Website: barr.com
• Ownership type: Private
• Headquarters: Minneapolis, Minnesota, United States (USA)
• Employee distribution: United States (USA) 94%, Canada 6%
• Founded year: 1966
• Headcount: 1001-5000
• LinkedIn: barr-engineering-co

Barr Engineering Co., founded in 1966 and based in Minneapolis, Minnesota, is a consulting firm that specializes in engineering and environmental services. With a workforce of over 1,000 employees, Barr provides tailored solutions to clients in sectors such as fuels, manufacturing, mining, and public agencies. The firm is dedicated to helping clients tackle complex challenges while achieving sustainable outcomes. Their services include environmental investigation and remediation, as well as environmental permitting and compliance, which are crucial for organizations looking to adhere to regulatory standards. Barr operates with a collaborative model, emphasizing employee ownership, which fosters a culture of accountability and commitment to client success. Their extensive experience and proactive approach to environmental challenges position them as a significant player in the field of environmental regulatory compliance.

14. All4

• Website: all4inc.com
• Ownership type: Private Equity
• Headquarters: Kimberton, Pennsylvania, United States (USA)
• Employee distribution: United States (USA) 99%, Other 1%
• Latest funding: January 2025
• Founded year: 2002
• Headcount: 201-500
• LinkedIn: all4-inc-

All4, founded in 2002 and based in Kimberton, Pennsylvania, is an environmental consulting firm that provides a wide array of services aimed at helping businesses comply with environmental regulations. The company focuses on air quality compliance, water quality management, and health and safety consulting, catering to a variety of industries. All4's team consists of engineers, scientists, and other experts who work closely with clients to ensure they meet federal, state, and local environmental standards. The firm is known for its commitment to education and authenticity, fostering long-term relationships with clients by providing tailored solutions that address their specific needs. All4 also engages in ongoing training and development, ensuring that its staff remains knowledgeable about the latest regulatory changes and best practices in environmental management.

15. Rincon Consultants, Inc.

• Website: rinconconsultants.com
• Ownership type: Private
• Headquarters: Ventura, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1994
• Headcount: 201-500
• LinkedIn: rincon-consultants-inc

Rincon Consultants, Inc., founded in 1994 and based in Ventura, California, is an environmental consulting firm that provides a wide array of services aimed at helping clients navigate environmental regulations. With a workforce of approximately 442 employees, the company serves a diverse clientele, including government agencies and private developers. Rincon's expertise spans environmental sciences, land use planning, sustainability initiatives, and compliance monitoring. They are actively involved in projects that require compliance with state and federal environmental regulations, such as CEQA and NEPA. Their portfolio includes significant projects like the California High-Speed Rail Project and various environmental assessments for municipal and private sector clients. Rincon is committed to promoting sustainable practices and has developed innovative tools to support climate action and resilience planning. Their focus on regulatory compliance and environmental stewardship makes them a notable player in the environmental consulting industry.

16. Enviroguide a DNV Company

• Website: enviroguide.ie
• Ownership type: Corporate
• Headquarters: Dublin, Dublin, Ireland
• Employee distribution: Ireland 94%, United Kingdom (UK) 6%
• Latest funding: July 2023
• Founded year: 2010
• Headcount: 11-50
• LinkedIn: enviroguide-consulting

Enviroguide a DNV Company, based in Dublin, Ireland, is an environmental consultancy that has been operational since 2010. The firm provides a wide range of services, including environmental compliance, risk management, sustainability consulting, and waste management. With a team of experienced professionals, Enviroguide assists clients in understanding the environmental implications of their operations and helps them navigate the complexities of environmental regulations. Their clientele includes local authorities, private sector companies, and government agencies, showcasing their ability to cater to various sectors. In July 2023, Enviroguide was acquired by DNV, which has allowed them to enhance their service offerings, particularly in the context of energy transition. The company prides itself on delivering practical and sustainable management solutions that help clients achieve their environmental, quality, and waste management goals.

17. HELIX Environmental Planning, Inc.

• Website: helixepi.com
• Ownership type: Private
• Headquarters: La Mesa, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1991
• Headcount: 201-500
• LinkedIn: helix-environmental-planning-inc-

HELIX Environmental Planning, Inc., founded in 1991 and based in La Mesa, California, is an environmental consulting firm that provides a wide array of services aimed at helping clients comply with environmental regulations. The company focuses on areas such as CEQA/NEPA compliance, biological resource studies, cultural resource management, and habitat restoration. HELIX serves a variety of sectors, including water resources, transportation, energy, and private development, demonstrating its capability to address complex environmental challenges across different industries. The firm is employee-owned, which may contribute to a strong commitment to quality and client service. HELIX has built a reputation for assisting clients in managing natural resources sustainably while ensuring compliance with environmental laws. Their expertise in regulatory permitting and compliance monitoring further solidifies their role as a trusted partner in environmental planning and management.

18. REACHLaw - Your Partner In Chemical Regulatory Compliance and Sustainability

• Website: reachlaw.fi
• Ownership type: Private
• Headquarters: Helsinki, Uusimaa, Finland
• Employee distribution: India 43%, Finland 39%, United Kingdom (UK) 14%, Other 4%
• Founded year: 2006
• Headcount: 11-50
• LinkedIn: compliantsuppliers

REACHLaw, based in Helsinki, Finland, is a consulting firm that specializes in chemical regulatory compliance and sustainability services. Founded in 2006, the company has built a reputation for helping businesses navigate the intricate web of regulations governing chemical substances. Their clientele includes manufacturers, importers, and governmental organizations across various sectors, such as automotive, chemicals, electronics, and energy. REACHLaw offers a range of services, including REACH & CLP services, public affairs, and advocacy services, as well as support for the circular economy. They have established a presence in multiple countries, including India, Turkey, and the UK, reflecting their commitment to global compliance solutions. The firm has received recognition for its growth and ethical operations, including the Internationalization Award from the President of Finland. With a team of experts in law, toxicology, and environmental consulting, REACHLaw is well-equipped to assist clients in achieving regulatory compliance and advancing sustainability objectives.

19. Roux

• Website: rouxinc.com
• Ownership type: Corporate
• Headquarters: Islandia, New York, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: May 2021
• Founded year: 1981
• Headcount: 201-500
• LinkedIn: roux-associates

Roux is an environmental consulting firm based in Islandia, New York, founded in 1981. With a workforce of approximately 442 employees, the company provides a comprehensive suite of services that includes environmental, health, and safety compliance, ecological risk assessments, and remediation solutions. Roux serves a wide array of clients, from Fortune 500 companies to public sector entities, helping them navigate the complexities of environmental regulations. Their projects span various industries, including energy, manufacturing, and real estate development. Roux is also involved in innovative approaches to environmental challenges, such as green and sustainable remediation practices. Their commitment to corporate social responsibility and environmental sustainability is evident in their operations and client engagements.

20. INDUS Environmental Services Pvt. Ltd.

• Website: indusenviro.com
• Ownership type: Private
• Headquarters: New Delhi, Delhi, India
• Employee distribution: India 100%
• Founded year: 2001
• Headcount: 11-50
• LinkedIn: indus-enviro

INDUS Environmental Services Pvt. Ltd., founded in 2001 and based in New Delhi, India, is an environmental consultancy that provides a comprehensive suite of services aimed at helping businesses comply with environmental regulations. With a team of 48 professionals, INDUS focuses on areas such as ESG assessments, risk management, compliance assurance, and water and waste management. The company serves a variety of corporate clients, particularly those in regulated industries, assisting them in implementing sustainable practices and navigating the complexities of environmental laws. Their Envirotrends service is particularly noteworthy, as it offers clients timely updates on evolving environmental regulations, ensuring they remain compliant and informed. INDUS has built a reputation for high-quality work and technical excellence, making it a significant player in the environmental consultancy space.

21. Environmental Impact Management Services (Pty) Ltd

• Website: eims.co.za
• Ownership type: Private
• Headquarters: Johannesburg, Gauteng, South Africa
• Employee distribution: South Africa 100%
• Founded year: 1993
• Headcount: 11-50
• LinkedIn: environmental-impact-management-services-pty-ltd

Environmental Impact Management Services (Pty) Ltd (EIMS) is an environmental consulting firm based in Johannesburg, South Africa, founded in 1993. The company provides a comprehensive range of services that include environmental impact assessments, compliance monitoring, and corporate sustainability initiatives. EIMS serves various sectors, notably energy, mining, oil and gas, water, and infrastructure, assisting clients in managing environmental risks and ensuring compliance with regulatory requirements. With a team of experienced professionals, EIMS has built a reputation for delivering reliable and quality advisory services. The firm has successfully completed numerous projects, showcasing its capability to handle complex environmental challenges. EIMS is also committed to social upliftment and empowerment, maintaining a Level 2 BBBEE rating, which reflects its dedication to transformation within the industry.

22. AWN Consulting Ltd.

• Website: awnconsulting.com
• Ownership type: Corporate
• Headquarters: Dublin, Dublin, Ireland
• Employee distribution: Ireland 97%, United Kingdom (UK) 3%
• Latest funding: December 2020
• Founded year: 2000
• Headcount: 11-50
• LinkedIn: awn-consulting-ltd.

AWN Consulting Ltd., founded in 2000 and based in Dublin, Ireland, is a consulting firm that specializes in environmental and acoustics advisory services. The company provides a comprehensive range of services aimed at helping businesses and organizations comply with environmental regulations. Their expertise includes risk management, environmental impact assessments, air quality management, and compliance with licensing requirements. AWN Consulting has worked with various sectors, including pharmaceuticals and waste processing, delivering Environmental Impact Statements for significant investments. The firm is known for its technical excellence and commitment to quality, with a team of experienced professionals dedicated to addressing environmental challenges. They also engage in community initiatives, reflecting their commitment to social responsibility. As of the latest information, AWN Consulting has not reported any funding activities since December 2020.

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