Environmental engineering companies specialize in addressing ecological issues through innovative solutions, focusing on sustainability and regulatory compliance. This industry involves firms that tackle a range of challenges such as water quality, waste management, and environmental impact assessments. Importantly, the shift towards renewable energy and climate mitigation is shaping the trajectory of these companies, resulting in a growing demand for expertise in climate resilience and green technologies. As environmental concerns continue to be a priority globally, the industry is increasingly pivotal in aiding communities and organizations to achieve their sustainability objectives, which is influencing the approaches these firms adopt.

The companies on this list range in size from small firms to major organizations, showcasing a breadth of specialization across environmental engineering. Headquarters span multiple countries including Denmark, the USA, and Australia, with founding dates reaching back as early as 1930. They offer services such as environmental consulting, engineering design, and impact assessment, often catering to both public sector and private clients. Their work reflects a strong emphasis on sustainable development and compliance, which is vital in today’s regulatory environment. With significant employee bases, these firms are well-equipped to handle complex environmental challenges.

Continue reading to discover the top environmental engineering companies.

Top 24 Environmental Engineering Companies

1. Ramboll

• Website: ramboll.com
• Ownership type: Private
• Headquarters: Copenhagen, Denmark
• Employee distribution: Denmark 22%, India 13%, United States (USA) 12%, Other 53%
• Founded year: 1945
• Headcount: 10001+
• LinkedIn: ramboll

Ramboll Group A/S, founded in 1945 and headquartered in Copenhagen, Denmark, is a global engineering, architecture, and consultancy firm. With over 18,000 employees operating in more than 35 countries, Ramboll focuses on delivering sustainable solutions across various sectors, including energy, environment, and infrastructure. The company collaborates with governments and businesses to address complex challenges related to climate change and urban development. Their projects include significant contributions to renewable energy, such as designing offshore wind farms that generate clean energy and reduce carbon emissions. Ramboll also emphasizes the importance of accurate data in construction materials to minimize embodied carbon, showcasing their commitment to innovative and sustainable practices. Their work in health, safety, and environmental quality further solidifies their role in promoting sustainability in engineering and consultancy.

2. Hdr

• Website: hdrinc.com
• Ownership type: Corporate
• Headquarters: Omaha, Nebraska, United States (USA)
• Employee distribution: United States (USA) 90%, Canada 4%, United Kingdom (UK) 2%, Other 3%
• Latest funding: June 2019
• Founded year: 1917
• Headcount: 10001+
• LinkedIn: hdr

HDR, Inc., founded in 1917 and based in Omaha, Nebraska, is an employee-owned engineering firm that provides a wide array of design and consulting services. The company operates in sectors such as infrastructure, environmental sciences, and urban development, catering to both government agencies and private organizations. HDR is recognized for its commitment to sustainability and innovation, actively engaging in projects that promote environmental stewardship. Their services include water resource management, wastewater treatment, and solid waste remediation, showcasing their expertise in environmental engineering. With over 15,000 employees and a presence in multiple countries, HDR is well-equipped to tackle complex challenges in the engineering field.

3. Arup

• Website: arup.com
• Ownership type: Private
• Headquarters: London, England, United Kingdom (UK)
• Employee distribution: United Kingdom (UK) 37%, Australia 14%, United States (USA) 10%, Other 39%
• Founded year: 1946
• Headcount: 10001+
• LinkedIn: arup

Arup is a multinational professional services firm based in London, England, founded in 1946. The company specializes in engineering, design, and advisory services, with a strong emphasis on sustainability and resilience in the built environment. Arup serves a wide range of clients, including both government and private sector organizations, providing innovative solutions to complex challenges. Their projects include significant contributions to urban infrastructure, renewable energy, and climate resilience, such as the East Anglia One offshore wind farm and the NYC Citywide Impervious Area Study aimed at enhancing flood resilience. Arup is also committed to reducing its carbon footprint, having set ambitious targets for net zero emissions and lifecycle carbon assessments for all building projects. Their work in developing digital tools for urban heat analysis and nature-based solutions further highlights their commitment to environmental engineering.

4. Ghd

• Website: ghd.com
• Ownership type: Private
• Headquarters: Sydney, New South Wales, Australia
• Employee distribution: Australia 42%, Canada 17%, United States (USA) 16%, Other 25%
• Founded year: 1928
• Headcount: 10001+
• LinkedIn: ghd

Ghd Group Pty Ltd, founded in 1928 and headquartered in Sydney, Australia, is a global employee-owned professional services firm. With over 16,000 employees, Ghd provides a comprehensive range of services that include advisory, architecture, engineering, environmental consulting, and project management. The company serves clients across multiple sectors, including water, energy, and transportation, with a strong emphasis on sustainable solutions and resilience against climate challenges. Ghd's initiatives, such as Aquanomics, focus on the economic implications of water risk, highlighting their commitment to integrating environmental considerations into their projects. Their work aims to foster sustainable practices and enhance community resilience, making them a significant player in the environmental engineering field.

5. CDM Smith

• Website: cdmsmith.com
• Ownership type: Corporate
• Headquarters: Boston, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 63%, India 13%, Qatar 6%, Other 18%
• Latest funding: March 2024
• Founded year: 1947
• Headcount: 5001-10000
• LinkedIn: cdmsmith

CDM Smith Inc. is an engineering and construction firm based in Boston, Massachusetts, with a workforce of approximately 7,930 employees. Founded in 1947, the company specializes in providing a wide array of services, including design, consulting, program management, and construction. Their expertise spans several sectors, notably water, environment, transportation, and energy. CDM Smith serves both public and private clients, helping them navigate complex infrastructure and environmental challenges. The company is particularly recognized for its innovative approaches to pressing issues such as water quality, climate change, and sustainable infrastructure development. Their projects often involve advanced technologies and methodologies aimed at enhancing community resilience and environmental protection.

6. Kleinfelder

• Website: kleinfelder.com
• Ownership type: Private Equity
• Headquarters: San Diego, California, United States (USA)
• Employee distribution: United States (USA) 95%, Canada 4%
• Latest funding: September 2023
• Founded year: 1961
• Headcount: 1001-5000
• LinkedIn: kleinfelder

Kleinfelder, Inc. is an engineering and environmental consulting firm based in San Diego, California, with a workforce of approximately 2,600 employees. Founded in 1961, the company has built a reputation for providing a wide range of professional services, including environmental assessments, construction materials testing, and construction management. Kleinfelder serves a variety of clients, including government entities and private sector companies, particularly in infrastructure projects. Their expertise in sustainable development and regulatory compliance is evident in their comprehensive approach to environmental challenges. The firm is actively involved in projects that span multiple sectors, such as energy, water, and transportation, showcasing their commitment to improving infrastructure while protecting the environment. Kleinfelder's environmental services focus on ensuring that societal development and natural resource use are sustainable, addressing issues from project permitting to decommissioning. Their technical experts apply knowledge of local, state, and federal regulations to deliver long-term strategies and solutions that mitigate environmental impacts.

7. Geosyntec Consultants

• Website: geosyntec.com
• Ownership type: Private Equity
• Headquarters: Boca Raton, Florida, United States (USA)
• Employee distribution: United States (USA) 87%, Canada 7%, Other 6%
• Latest funding: May 2022
• Founded year: 1983
• Headcount: 1001-5000
• LinkedIn: geosyntec-consultants

Geosyntec Consultants is a consulting and engineering firm based in Boca Raton, Florida, with a workforce of approximately 2,600 employees. Established in 1983, the company specializes in environmental management, civil engineering, and infrastructure development. They serve both private and public sector clients, providing solutions for a range of challenges, including contaminated site assessment, water resource management, and compliance with environmental regulations. Geosyntec's expertise extends to various sectors, such as energy transition, mining, and food and beverage, where they address issues related to sustainability and environmental safety. Their commitment to innovation is evident in their approach to complex environmental problems, utilizing advanced scientific and engineering technologies to deliver effective solutions. The firm has not reported any recent funding, indicating stability and a focus on organic growth.

8. 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 specializes in a wide array of services that include air quality management, cultural resource management, and spill response. SWCA serves a variety of clients, including government agencies and private organizations, particularly in sectors such as land development and energy. Their expertise helps clients navigate the complexities of environmental compliance while fostering sustainability. SWCA is also recognized for its commitment to employee ownership, which enhances its corporate culture and promotes a sense of investment among its workforce. The firm has been involved in numerous projects across the United States, showcasing their capability in managing environmental challenges and contributing to ecological restoration efforts. Their focus on innovative solutions and strategic environmental management positions them as a significant player in the environmental consulting industry.

9. Civil & Environmental Consultants, Inc.

• Website: cecinc.com
• Ownership type: Corporate
• Headquarters: Moon Township, Pennsylvania, United States (USA)
• Employee distribution: United States (USA) 97%, Other 3%
• Latest funding: December 2023
• Founded year: 1989
• Headcount: 1001-5000
• LinkedIn: civil-%26-environmental-consultants-inc-

Civil & Environmental Consultants, Inc. (CEC) is an engineering and environmental consulting firm headquartered in Moon Township, Pennsylvania. Established in 1989, the company has grown to employ over 2,000 professionals across 34 offices nationwide. CEC specializes in a variety of services that include air quality assessments, civil engineering, ecological sciences, waste management, and water resources management. The firm serves a broad spectrum of industries, including manufacturing, mining, oil and gas, and the public sector, helping clients navigate complex environmental regulations and challenges. CEC is recognized for its commitment to quality service and safety, emphasizing a culture of accountability among its employee-owners. This structure not only enhances client relationships but also drives the firm’s operational success. CEC has been consistently ranked in the Engineering News-Record's annual lists, reflecting its significant role in the environmental engineering sector.

10. Kci

• Website: kci.com
• Ownership type: Private
• Headquarters: Sparks, Maryland, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1955
• Headcount: 1001-5000
• LinkedIn: kci-technologies-inc-

KCI Technologies, founded in 1955 and based in Sparks, Maryland, is a private engineering and consulting firm with a workforce of over 2,500 employees. The company specializes in various services, including construction management, environmental engineering, and technology solutions. KCI serves a broad spectrum of clients, including federal, state, and local government agencies, as well as private sector companies. Their focus on infrastructure development and sustainability is evident in their commitment to environmental responsibility. KCI's environmental engineering division offers comprehensive services that cover hazardous waste management, water resources, and ecosystem restoration. They strive to integrate ecological sustainability with economic integrity, ensuring that their projects not only meet regulatory requirements but also contribute positively to the environment. KCI's extensive experience in environmental management positions them as a significant player in the industry, actively working to address pressing environmental issues.

11. RSK Group

• Website: rskgroup.com
• Ownership type: Private Equity
• Headquarters: Helsby, England, United Kingdom (UK)
• Employee distribution: United Kingdom (UK) 77%, India 5%, Tanzania 3%, Other 14%
• Latest funding: Other (Debt), $381.4M, June 2024
• Founded year: 1989
• Headcount: 10001+
• LinkedIn: rsk-group

RSK Group, founded in 1989 and based in Helsby, England, is an environmental consultancy and engineering services company. With over 10,000 employees, RSK provides a comprehensive range of services aimed at helping businesses navigate environmental challenges. Their expertise includes environmental assessments, engineering solutions, and sustainability consulting across various sectors such as energy, healthcare, and construction. RSK is actively involved in projects that promote sustainability, including initiatives in renewable energy and biodiversity recovery. The company has recently secured significant funding, amounting to £381 million, which supports their growth and expansion in the environmental sector. RSK's integrated approach combines research, consultancy, and practical application, positioning them as a key player in addressing pressing environmental issues.

12. Cowi

• Website: cowi.com
• Ownership type: Private
• Headquarters: Lyngby, Denmark
• Employee distribution: Denmark 42%, Norway 17%, India 11%, Other 30%
• Founded year: 1930
• Headcount: 5001-10000
• LinkedIn: cowi

Cowi A/S, based in Lyngby, Denmark, is a consulting firm founded in 1930. With a workforce of approximately 8,448 employees, Cowi operates primarily in Denmark, Norway, India, Sweden, and the United Kingdom. The company specializes in engineering, environmental science, and economics, providing a wide range of services that include architecture, infrastructure development, and environmental consulting. Cowi plays a significant role in helping businesses and organizations tackle complex challenges while implementing sustainable solutions. Their projects often focus on climate change, urbanization, and the integration of technology in environmental practices, showcasing their commitment to creating a sustainable and livable world.

13. Brown and Caldwell

• Website: brownandcaldwell.com
• Ownership type: Private
• Headquarters: Walnut Creek, California, United States (USA)
• Employee distribution: United States (USA) 98%, Other 2%
• Latest funding: Other (Grant), $650,000, January 2025
• Founded year: 1947
• Headcount: 1001-5000
• LinkedIn: brown-and-caldwell

Brown and Caldwell is an environmental consulting and engineering firm based in Walnut Creek, California, with a workforce of approximately 2,475 employees. Established in 1947, the company specializes in water management and infrastructure solutions, providing a comprehensive suite of services that includes climate change resilience, compliance, and wastewater reclamation. They cater to both municipal and private sector clients, emphasizing innovative strategies to optimize water resources and address environmental challenges. Their commitment to research and innovation is evident in their development of advanced technologies, such as BC:Opta™ for optimization and non-reverse osmosis methods for potable reuse. Brown and Caldwell's projects reflect their dedication to sustainability and efficiency, making them a notable entity in the environmental engineering sector.

14. Buro Happold

• Website: burohappold.com
• Ownership type: Private
• Headquarters: Bath, England, United Kingdom (UK)
• Employee distribution: United Kingdom (UK) 48%, United States (USA) 15%, India 10%, Other 27%
• Founded year: 1976
• Headcount: 1001-5000
• LinkedIn: buro-happold

Buro Happold Limited is a private engineering consultancy based in Bath, England, founded in 1976. With a workforce of over 3,400 employees, the company operates globally, providing a wide array of services that include advisory, sustainability consulting, and engineering design. Buro Happold focuses on addressing challenges in infrastructure and the built environment, serving clients across various sectors. Their expertise spans areas such as climate change adaptation, energy consulting, and the design of net zero carbon buildings. The firm is also involved in waste management consulting and urban analytics, showcasing their commitment to sustainable practices. Buro Happold's approach is characterized by integrated thinking and collaboration among experts, which enables them to deliver innovative solutions that positively impact communities and the environment.

15. Klohn Crippen Berger

• Website: klohn.com
• Ownership type: Private
• Headquarters: Vancouver, British Columbia, Canada
• Employee distribution: Canada 57%, Australia 24%, Peru 13%, Other 7%
• Founded year: 1950
• Headcount: 501-1000
• LinkedIn: klohn-crippen-berger

Klohn Crippen Berger (KCB) is an engineering consulting firm based in Vancouver, British Columbia, with a history dating back to 1950. The company specializes in geoscience and environmental services, providing solutions that address complex engineering challenges across various sectors, including mining, hydropower, infrastructure, transportation, and energy. KCB is known for its commitment to sustainability, advising clients on how to incorporate environmentally responsible practices into their projects. The firm has a global presence, with offices in Canada, Australia, Peru, Brazil, and the United Kingdom, and employs around 789 professionals. KCB has been recognized with over 50 national and international awards for its projects, reflecting its reputation for quality and technical excellence. The company actively engages in environmental stewardship, aiming to mitigate the impacts of its operations and those of its clients. KCB's dedication to health and safety, along with its focus on employee well-being, further underscores its role as a responsible player in the engineering consulting field.

16. 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 focuses on environmental solutions, water management, and infrastructure services. With a workforce of approximately 1,349 employees, Apex serves a wide array of clients, including public agencies and private enterprises. The firm provides expert guidance on regulatory compliance, project management, and sustainability initiatives. Apex is known for its commitment to community involvement and social responsibility, actively supporting local and national organizations. Their service offerings include stormwater management, environmental assessments, emergency response, and health and safety consulting. The company has also expanded its reach through strategic acquisitions, enhancing its expertise in various sectors such as energy, healthcare, and transportation.

17. 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, the company operates primarily in the United States and Canada. Barr Engineering provides tailored solutions to clients across various sectors, including fuels, manufacturing, mining, and public agencies. Their services include environmental investigation and remediation, engineering design, environmental permitting, and sustainability practices. The firm emphasizes a collaborative approach, leveraging the expertise of its employee-owners to deliver effective and sustainable outcomes. Barr has been involved in numerous projects that address pressing environmental issues, such as water quality improvement and compliance with evolving regulations. Their commitment to client success and community impact positions them as a significant player in the environmental engineering field.

18. ILF Consulting Engineers

• Website: ilf.com
• Ownership type: Private
• Headquarters: United States (USA)
• Employee distribution: Austria 16%, Saudi Arabia 13%, United Arab Emirates 12%, Other 59%
• Founded year: 1967
• Headcount: 1001-5000
• LinkedIn: ilf-consulting-engineers

ILF Consulting Engineers is an international engineering and consulting firm founded in 1967, with a workforce of over 3,000 employees spread across more than 45 locations worldwide. The company specializes in providing engineering and consulting services in various sectors, including energy, water management, and infrastructure. ILF is dedicated to delivering expert solutions for complex projects, leveraging its extensive experience and international expertise. Their service offerings include environmental planning, climate change management, and sustainability advisory services, which are crucial for addressing contemporary environmental challenges. ILF's commitment to sustainability is evident in their projects aimed at optimizing resource use and enhancing environmental protection. They have successfully executed over 11,100 projects in more than 150 countries, showcasing their capability and reach in the industry.

19. Smec

• Website: smec.com
• Ownership type: Corporate
• Headquarters: North Sydney, New South Wales, Australia
• Employee distribution: Australia 40%, India 16%, South Africa 12%, Other 32%
• Latest funding: $400.0M, August 2016
• Founded year: 1970
• Headcount: 5001-10000
• LinkedIn: smec

SMEC Holdings Limited, based in North Sydney, New South Wales, Australia, is an engineering consulting firm founded in 1970. With a workforce of over 7,400 employees, SMEC operates in more than 40 countries, providing specialized services for significant infrastructure projects. The company has a strong emphasis on sustainable development, particularly in the fields of transport, energy, and environmental planning. Their portfolio includes a wide range of services, from environmental impact assessments to waste management and climate resilience strategies. SMEC's historical involvement in pioneering projects, such as the Snowy Mountains Hydroelectric Scheme, highlights their long-standing commitment to renewable energy and sustainable practices. They cater to both government and private sector clients, ensuring that their solutions are practical and effective in addressing the complex challenges of modern infrastructure development.

20. Tyréns AB

• Website: tyrens.se
• Ownership type: Private
• Headquarters: Stockholm, Stockholm, Sweden
• Employee distribution: Sweden 100%
• Founded year: 1942
• Headcount: 1001-5000
• LinkedIn: tyrens-ab

Tyréns AB, founded in 1942 and based in Stockholm, Sweden, is an engineering consulting firm that specializes in urban development and sustainability. With a workforce of over 2,400 employees, Tyréns provides a wide array of services, including architecture, environmental consulting, and project management, catering to both municipalities and private sector clients. The company is dedicated to creating better communities through innovative solutions and sustainable practices. Tyréns is particularly involved in projects that focus on renewable energy, such as wind and solar power, and they conduct climate risk analyses to help municipalities adapt to changing environmental conditions. Their commitment to sustainability is further reflected in their circular business model, which reinvests profits into research and development for sustainable solutions in the construction and urban planning sectors. This approach not only enhances their service offerings but also contributes to the broader goal of fostering sustainable development in society.

21. Rs&h

• Website: rsandh.com
• Ownership type: Private
• Headquarters: Jacksonville, Florida, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1941
• Headcount: 1001-5000
• LinkedIn: rs%26h

RS&H, Inc., founded in 1941 and based in Jacksonville, Florida, is a private consulting firm that specializes in architectural, engineering, planning, and environmental services. With a workforce of approximately 1,792 employees, RS&H serves a wide range of clients, including government and corporate entities. The firm is dedicated to providing innovative solutions for infrastructure and facility development, with a strong emphasis on sustainability and community impact. Their environmental services include ensuring compliance with regulatory requirements, designing projects that adhere to the highest environmental standards, and implementing strategies that promote healthy environments. RS&H has a long-standing history of involvement in significant projects across various sectors, including transportation, healthcare, and aerospace, showcasing their capability to address complex challenges while prioritizing environmental considerations.

22. Langan Engineering & Environmental Services

• Website: langan.com
• Ownership type: Private Equity
• Headquarters: Parsippany-Troy Hills, New Jersey, United States (USA)
• Employee distribution: United States (USA) 97%, Other 3%
• Latest funding: $10.7M, January 2024
• Founded year: 1970
• Headcount: 1001-5000
• LinkedIn: langan-engineering-%26-environmental-services-inc

Langan Engineering & Environmental Services, founded in 1970 and based in Parsippany-Troy Hills, New Jersey, is an engineering and environmental consulting firm. The company specializes in a wide array of services, including site development, geotechnical engineering, environmental compliance, and energy solutions. With a workforce of nearly 2,000 employees, Langan operates primarily in the United States, but also has a presence in international markets. Their expertise is sought after by a variety of clients, including developers and government entities, who rely on Langan's knowledge to navigate complex regulatory landscapes and ensure project success. The firm is also involved in sustainability initiatives, providing solutions that protect the environment while meeting client needs. Recently, Langan secured funding of over $10 million, which underscores their ongoing growth and investment in expanding their capabilities.

23. 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, with a workforce of approximately 715 employees. Established in 1969, ESA specializes in a variety of services aimed at addressing environmental challenges. Their expertise includes air quality management, biological resource assessments, and climate change resilience planning. ESA serves a wide range of clients, including federal and state agencies, municipalities, and private sector organizations. The firm is dedicated to helping these clients navigate complex environmental regulations while promoting sustainable practices. ESA's project portfolio showcases their involvement in significant initiatives, such as habitat restoration, flood management, and transportation planning, reflecting their commitment to environmental stewardship and community engagement. As a 100% employee-owned company, ESA fosters a culture of accountability and collaboration among its staff, which is essential for delivering effective environmental solutions.

24. Niras

• Website: niras.com
• Ownership type: Private
• Headquarters: Glostrup, Glostrup, Denmark
• Employee distribution: Denmark 77%, Sweden 8%, Norway 4%, Other 11%
• Founded year: 1956
• Headcount: 1001-5000
• LinkedIn: niras

Niras is a private engineering consultancy based in Glostrup, Denmark, founded in 1956. With approximately 3,800 employees, the company specializes in sustainable development solutions across multiple sectors, including energy, environment, and digitalization. Niras provides consulting services that help businesses and organizations navigate complex challenges while achieving their sustainability goals. Their expertise spans a wide array of areas, such as environmental management, renewable energy, and development consulting. Niras has a strong presence in Scandinavia and operates globally, working with international aid agencies and local governments to implement innovative projects. Their commitment to sustainability is reflected in initiatives like the GREENsition, which aims to enhance their contribution to the green energy transition. Niras has also been involved in significant projects, such as environmental assessments for offshore wind farms and carbon reduction strategies for major corporations. This active engagement in the environmental sector underscores their relevance and expertise in environmental engineering.

Environmental Engineering Insights: Key Companies

Company	Headquarter	Size	Founded	Ownership
Ramboll	Copenhagen, Denmark	10001+	1945	Private
Hdr	Omaha, Nebraska, United States (USA)	10001+	1917	Corporate
Arup	London, England, United Kingdom (UK)	10001+	1946	Private
Ghd	Sydney, New South Wales, Australia	10001+	1928	Private
CDM Smith	Boston, Massachusetts, United States (USA)	5001-10000	1947	Corporate
Kleinfelder	San Diego, California, United States (USA)	1001-5000	1961	Private Equity
Geosyntec Consultants	Boca Raton, Florida, United States (USA)	1001-5000	1983	Private Equity
SWCA Environmental Consultants	Phoenix, Arizona, United States (USA)	1001-5000	1981	Private
Civil & Environmental Consultants, Inc.	Moon Township, Pennsylvania, United States (USA)	1001-5000	1989	Corporate
Kci	Sparks, Maryland, United States (USA)	1001-5000	1955	Private
RSK Group	Helsby, England, United Kingdom (UK)	10001+	1989	Private Equity
Cowi	Lyngby, Denmark	5001-10000	1930	Private
Brown and Caldwell	Walnut Creek, California, United States (USA)	1001-5000	1947	Private
Buro Happold	Bath, England, United Kingdom (UK)	1001-5000	1976	Private
Klohn Crippen Berger	Vancouver, British Columbia, Canada	501-1000	1950	Private
Apex Companies, LLC	Rockville, Maryland, United States (USA)	1001-5000	1988	Venture Capital
Barr Engineering Co.	Minneapolis, Minnesota, United States (USA)	1001-5000	1966	Private
ILF Consulting Engineers	United States (USA)	1001-5000	1967	Private
Smec	North Sydney, New South Wales, Australia	5001-10000	1970	Corporate
Tyréns AB	Stockholm, Stockholm, Sweden	1001-5000	1942	Private
Rs&h	Jacksonville, Florida, United States (USA)	1001-5000	1941	Private
Langan Engineering & Environmental Services	Parsippany-Troy Hills, New Jersey, United States (USA)	1001-5000	1970	Private Equity
Environmental Science Associates	San Francisco, California, United States (USA)	501-1000	1969	Private
Niras	Glostrup, Glostrup, Denmark	1001-5000	1956	Private

Want to Find More Environmental Engineering Companies?

If you want to find more companies that offer engineering, consulting, and sustainability solutions for clients you can do so with Inven. This list was built with Inven and there are hundreds of companies like these globally.

With Inven you'll also get to know the company's:

• Detailed Ownership: Who owns the company? Is it a public or private company? What is the ownership structure?
• Contact data: Who are the founders and CEO's? What are their emails and phone numbers?
• Financials: How do these companies perform financially? What are their revenues and profit margins?

...and a lot more!