Environmental consulting companies in Connecticut focus on addressing a variety of ecological challenges. These firms range from small specialists to larger firms, and they provide essential services like site assessments, regulatory compliance, and sustainability planning. As environmental regulations tighten and sustainability becomes imperative, these companies are increasingly engaged in renewable energy projects and climate resilience efforts. Trends indicate a steady growth in demand for services that reduce environmental impact and foster compliance. The industry is evolving and adapting to meet the needs of a society that recognizes the importance of environmental health and sustainability.

The following list features 21 environmental consulting companies based in Connecticut, encompassing a mix of company sizes and specializations. Founded between 1972 and 2006, these firms vary from small teams of less than 10 to substantially-sized organizations with up to 500 employees. With headquarters mainly located in cities like Hartford, Cheshire, and Meriden, they offer services ranging from engineering and environmental assessments to sustainability consulting and energy audits. Each company aims to provide tailored solutions for their clients' environmental challenges.

Continue reading to discover the top environmental consulting companies in Connecticut.

Top 21 Environmental Consulting Companies in Connecticut

1. Fuss & O'Neill

• Website: fando.com
• Ownership type: Private
• Headquarters: Hartford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1924
• Headcount: 201-500
• LinkedIn: fuss-%26-o%27neill

Fuss & O'Neill is an engineering firm based in Hartford, Connecticut, with a history dating back to 1924. The company operates in the civil and environmental engineering sectors, providing a wide array of services that include site planning, climate resilience, and water management. They assist businesses and organizations in navigating complex engineering challenges and regulatory requirements. Fuss & O'Neill's expertise extends to areas such as air quality engineering, brownfields remediation, and ecological restoration. Their commitment to sustainability is evident in their focus on decarbonization and renewable energy projects. The firm employs approximately 458 professionals and has a strong presence in the New England region, serving various markets including energy, transportation, and water management.

2. Milone & MacBroom

• Website: mminc.com
• Ownership type: Private
• Headquarters: Cheshire, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1984
• Headcount: 51-200
• LinkedIn: milone-%26-macbroom-inc-

Milone & MacBroom is a private consulting firm based in Cheshire, Connecticut, founded in 1984. The company employs between 51 to 200 professionals and offers a range of services that include environmental consulting, engineering, and planning. They are known for their work in environmental assessments, project management, and community planning. Milone & MacBroom has built a reputation for helping clients address environmental challenges through innovative solutions and strategic planning. Their clientele spans various sectors, including government, private industry, and non-profit organizations, reflecting their capability to handle projects of varying scales and complexities. The firm is committed to sustainability and actively engages in projects that promote environmental stewardship and compliance with regulatory standards.

3. LCL - Génie, environnement & développement durable

• Website: lclenvironnement.com
• Ownership type: Private
• Headquarters: Granby, Connecticut, United States (USA)
• Employee distribution: Canada 100%
• Founded year: 2006
• Headcount: 11-50
• LinkedIn: environnement-lcl-inc.

LCL - Génie, environnement & développement durable is an environmental consulting firm based in Granby, Connecticut, established in 2006. With a team of engineers, geologists, and biologists, LCL focuses on providing comprehensive solutions in geo-environment, water engineering, and sustainable development. The firm assists a variety of clients, including developers and industries, in navigating complex environmental regulations and implementing effective management strategies. Their service offerings include environmental assessments, water treatment design, and industrial hygiene consulting. LCL is also committed to sustainable practices, having achieved carbon neutrality certification and actively engaging in projects that promote environmental responsibility. The firm’s expertise in areas such as groundwater studies, site rehabilitation, and waste management positions it as a significant player in the environmental consulting industry.

4. Triton Environmental, LLC

• Website: tritonenvironmental.com
• Ownership type: Corporate
• Headquarters: Guilford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: April 2024
• Founded year: 1995
• Headcount: 11-50
• LinkedIn: triton-environmental

Triton Environmental, LLC is an environmental consulting and engineering services firm based in Guilford, Connecticut. Established in 1995, the company specializes in providing innovative and cost-effective solutions to a range of environmental challenges faced by businesses and organizations. Triton focuses on compliance and environmental management, offering expertise that helps clients navigate complex regulatory landscapes. With a dedicated team of approximately 32 employees, Triton is equipped to deliver tailored consulting and engineering services that meet the specific needs of their clients. Their approach emphasizes efficiency and effectiveness, ensuring that clients receive optimal results while managing costs. Triton Environmental remains committed to addressing the pressing environmental issues of today, making them a relevant player in the consulting industry.

5. HRP Associates, Inc.

• Website: hrpassociates.com
• Ownership type: Private
• Headquarters: Farmington, Connecticut, United States (USA)
• Employee distribution: United States (USA) 99%, Other 1%
• Founded year: 1982
• Headcount: 51-200
• LinkedIn: hrp-associates-inc.

HRP Associates, Inc., based in Farmington, Connecticut, is a consulting firm that specializes in environmental and engineering services. Established in 1982, the company has been at the forefront of helping clients manage environmental risks and comply with regulations. With a workforce of approximately 143 employees, HRP operates nine offices across the United States and has extended its consulting services globally to over twenty countries. Their expertise includes air quality management, site investigation, remediation, and EH&S compliance, among others. HRP has successfully completed over 30,000 environmental consulting projects, showcasing their extensive experience and capability in the field. The firm is dedicated to providing tailored solutions that not only meet regulatory requirements but also enhance operational efficiency for their clients. Their proactive approach to environmental challenges positions them as a valuable partner for organizations seeking to improve their environmental performance.

6. Atlas Environmental

• Website: atlas-environmental.com
• Ownership type: Private
• Headquarters: Groton, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1994
• Headcount: 1-10
• LinkedIn: atlas-environmental

Atlas Environmental is a private environmental consulting firm based in Groton, Connecticut, founded in 1994. The company is staffed by experienced geologists, engineers, and environmental professionals who specialize in environmental compliance and site assessment. Atlas Environmental offers a range of services, including environmental studies, reporting, and regulatory submissions, catering to a variety of clients such as gas stations, municipalities, and manufacturers. The firm prides itself on efficient project management, minimizing subcontractor costs, and maintaining comprehensive insurance coverage. Their expertise extends to areas such as assessment and remediation, underground storage tank management, and public water system planning and compliance. With a focus on regulatory compliance, Atlas Environmental plays a crucial role in helping clients address environmental concerns and adhere to necessary regulations.

7. EnviroMed Services, Inc.

• Website: enviromedservices.com
• Ownership type: Private
• Headquarters: Meriden, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1986
• Headcount: 11-50
• LinkedIn: enviromed-services-inc

EnviroMed Services, Inc. is an environmental consulting firm based in Meriden, Connecticut, with a focus on industrial hygiene and environmental engineering. Founded in 1986, the company has built a reputation for assisting clients in navigating environmental regulations and ensuring safe work environments. Their services include hazardous materials investigations, air quality assessments, and comprehensive safety training programs. EnviroMed employs a team of over 30 professionals, including certified industrial hygienists, environmental scientists, and safety technicians. They serve a wide range of clients, from federal and state departments to hospitals, schools, and private businesses, primarily in the New England region. The firm has been involved in notable projects, such as monitoring lead paint removal operations for the New York City Department of Transportation and conducting indoor air quality assessments for housing authorities. EnviroMed's commitment to safety and compliance is further demonstrated through their extensive training programs aligned with OSHA regulations.

8. Cabrera Services Inc.

• Website: cabreraservices.com
• Ownership type: Corporate
• Headquarters: East Hartford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: March 2024
• Founded year: 1994
• Headcount: 51-200
• LinkedIn: cabrera-services-inc-

Cabrera Services Inc., founded in 1994, is an environmental services company based in East Hartford, Connecticut. The firm specializes in environmental remediation and radioactive waste management, providing consulting and technical support primarily to federal agencies. With a workforce of around 40 employees, Cabrera has built a reputation for managing complex remediation projects across the United States. Their expertise includes health physics, engineering, and project management, allowing them to navigate the intricacies of environmental regulations effectively. Cabrera holds a Nuclear Regulatory Commission (NRC) radioactive materials license, which underscores their capability in handling sensitive projects. The company has successfully completed numerous projects, including those under the Formerly Utilized Sites Remedial Action Program (FUSRAP) and various Superfund sites. Their commitment to safety is reflected in their rigorous health and safety management systems, and they have received multiple awards for outstanding safety performance. Cabrera's approach integrates advanced technology and scientific methods to ensure effective environmental protection and site restoration.

9. Zuvic

• Website: zuvic.com
• Ownership type: Private
• Headquarters: Rocky Hill, Connecticut, United States (USA)
• Founded year: 1988
• Headcount: 11-50
• LinkedIn: zuvic-carr

Zuvic Infrastructure Solutions, based in Rocky Hill, Connecticut, is an engineering firm that specializes in civil design and environmental assessment services. Founded in 1988 by Marici Zuvic, the company has built a reputation for providing comprehensive solutions for site development, environmental remediation, and permitting. With a team of professional engineers, environmental scientists, and land surveyors, Zuvic serves a range of clients, including commercial developers, educational institutions, and utility providers. Their services include environmental site assessments, brownfield redevelopment, and construction inspection, among others. Zuvic has been involved in numerous projects across Connecticut and New England, demonstrating their capability to handle complex environmental challenges while ensuring compliance with regulatory requirements. Their commitment to environmental advocacy and innovative problem-solving has made them a trusted partner in the industry.

10. Freeman Companies, LLC

• Website: freemancos.com
• Ownership type: Private
• Headquarters: Hartford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2009
• Headcount: 11-50
• LinkedIn: freeman-companies-llc

Freeman Companies, LLC, founded in 2009 and based in Hartford, Connecticut, is a multi-disciplinary engineering firm that provides a range of professional services. The company specializes in civil engineering, landscape architecture, geotechnical engineering, and environmental sciences. They serve a variety of clients, including governmental, institutional, and private sector entities, delivering innovative solutions to complex engineering and environmental challenges. With a strong commitment to sustainability, Freeman Companies integrates environmental considerations into their projects, ensuring that they not only meet client needs but also promote responsible resource management. The firm has built a reputation for excellence and reliability, retaining a significant portion of their clients through repeat business. Their work includes significant projects such as the South Hartford Storage and Conveyance Tunnel and various landscape architecture initiatives. Freeman Companies is also recognized for its social responsibility efforts, including the establishment of a scholarship to support minority students pursuing engineering careers. They are fully licensed in New England and hold certifications as a DBE, SBE, MBE, and Federal SBA 8(a) professional consulting engineering firm.

11. JKMuir - Energy & Sustainability in Public Infrastructure

• Website: jkmuir.com
• Ownership type: Private
• Headquarters: Rocky Hill, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2008
• Headcount: 11-50
• LinkedIn: jkmuir

JKMuir - Energy & Sustainability in Public Infrastructure is an engineering consulting firm based in Rocky Hill, Connecticut, established in 2008. The company focuses on providing energy management and sustainability solutions tailored for municipal, utility, and industrial clients. With a team of skilled engineers, JKMuir offers services such as energy audits, pump system efficiency evaluations, and construction inspection. Their work is centered on helping clients reduce energy consumption and greenhouse gas emissions, which is crucial in today's climate-conscious environment. JKMuir has been involved in various significant projects, including the NYC DEP Energy and Carbon Neutrality Plan and multiple pump system optimization initiatives across New England. Their expertise in integrating sustainability into public infrastructure projects positions them as a valuable partner for organizations aiming to enhance their environmental performance. JKMuir is also certified as a Women’s Business Enterprise in several states, reflecting their commitment to diversity and inclusion in the industry.

12. CCA Engineering

• Website: ccaengineering.com
• Ownership type: Corporate
• Headquarters: Brookfield, Connecticut, United States (USA)
• Employee distribution: United States (USA) 70%, China 15%, Malaysia 15%
• Latest funding: July 2014
• Founded year: 1978
• Headcount: 11-50
• LinkedIn: cca-engineering

CCA Engineering, established in 1977 and based in Brookfield, Connecticut, is a consulting engineering firm that specializes in civil engineering, environmental services, land surveying, and landscape architecture. With a team of licensed professionals, including environmental engineers and land surveyors, CCA serves municipalities, industries, and private clients. Their environmental services division focuses on regulatory compliance, site assessments, waste management, and remediation design. CCA has built a reputation for quality and innovation, providing state-of-the-art solutions to complex engineering challenges. The firm has worked with various clients, including government agencies and private sector organizations, ensuring that projects meet stringent environmental standards. CCA's commitment to integrity, innovation, and quality has positioned them as a reliable partner in the environmental consulting industry.

13. Loureiro Engineering Associates, Inc.

• Website: loureiro.com
• Ownership type: Private
• Headquarters: Plainville, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1975
• Headcount: 51-200
• LinkedIn: loureiro-engineering

Loureiro Engineering Associates, Inc. is a private engineering and construction firm based in Plainville, Connecticut, founded in 1975. With a workforce of approximately 166 employees, the company specializes in integrated services that include engineering, environmental consulting, and construction. Loureiro serves a variety of sectors, including industrial and government clients, providing solutions that enhance project management and accountability. Their environmental consulting services cover a range of activities, such as environmental assessments, remediation, and health and safety evaluations. Notably, Loureiro has been involved in significant projects, including the remediation of Superfund sites, showcasing their expertise in managing complex environmental challenges. The firm operates under an employee-owned model, which fosters a culture of commitment to exceptional service and client satisfaction. Loureiro's approach emphasizes transparency and accountability, ensuring that clients receive tailored solutions that meet their specific needs.

14. LRC Group

• Website: lrcconsult.com
• Ownership type: Private
• Headquarters: Cromwell, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1999
• Headcount: 11-50
• LinkedIn: lrc-group

LRC Group, founded in 1999 and based in Cromwell, Connecticut, is a private consulting firm that specializes in civil engineering, land surveying, landscape architecture, and environmental services. With a team of approximately 30 professionals, the company serves a variety of clients, including private developers, municipalities, and institutions. Their approach emphasizes collaboration and effective project management, ensuring that environmental considerations are prioritized throughout the development process. LRC Group is a member of the U.S. Green Building Council, reflecting their commitment to sustainable practices. Their environmental services include preliminary site reconnaissance, detailed environmental assessments, and the development of remediation plans, showcasing their expertise in navigating complex environmental challenges.

15. GEODesign, Inc.

• Website: geocompanies.com
• Ownership type: Corporate
• Headquarters: Middlebury, Connecticut, United States (USA)
• Employee distribution: United States (USA) 89%, India 11%
• Latest funding: July 2019
• Founded year: 1995
• Headcount: 11-50
• LinkedIn: geodesign

GEODesign, Inc., founded in 1995 and based in Middlebury, Connecticut, is a consulting firm that specializes in geotechnical engineering, environmental consulting, and construction engineering. With a team of approximately 28 professionals, the company has built a solid reputation by providing practical and innovative solutions to clients in the construction and real estate sectors. Their services range from geotechnical reports and foundation engineering to environmental site assessments and regulatory compliance. GEODesign has been involved in numerous projects across the Eastern and Western United States, addressing complex geotechnical challenges and ensuring adherence to environmental regulations. Their commitment to client service and technical excellence has enabled them to support successful project execution, particularly in areas affected by environmental issues, such as brownfield redevelopment and emergency response following natural disasters. The firm has not reported any recent funding, indicating a stable operational model focused on delivering value through expertise rather than external financial backing.

16. Steven Winter Associates

• Website: swinter.com
• Ownership type: Private
• Headquarters: Norwalk, Connecticut, United States (USA)
• Employee distribution: United States (USA) 99%, Other 1%
• Founded year: 1972
• Headcount: 51-200
• LinkedIn: steven-winter-associates

Steven Winter Associates, Inc. is a consulting firm based in Norwalk, Connecticut, established in 1972. The company specializes in building performance, offering a range of services that include energy efficiency, sustainability, and accessibility consulting. SWA serves a variety of clients, including residential and commercial developers, architects, and building owners, assisting them in achieving compliance with various standards and enhancing their building operations. The firm has a notable track record in green building certification, having certified numerous projects under programs like LEED and ENERGY STAR. SWA is also involved in significant initiatives, such as leading a team for the U.S. Department of Energy's Building America program, which focuses on decarbonizing the U.S. housing stock. Their commitment to improving the built environment is evident in their comprehensive approach to energy optimization and accessibility solutions, making them a respected player in the environmental consulting industry.

17. Celtic Energy

• Website: celticenergy.com
• Ownership type: Corporate
• Headquarters: Glastonbury, Connecticut, United States (USA)
• Employee distribution: United States (USA) 69%, United Kingdom (UK) 31%
• Latest funding: January 2019
• Founded year: 2000
• Headcount: 11-50
• LinkedIn: celtic-energy-inc-

Celtic Energy, part of NV5, is a consulting and engineering company based in Glastonbury, Connecticut. Founded in 2000, the firm specializes in providing technology and conformity assessment solutions for both public and private sector clients. Their services cover a wide range of areas, including infrastructure, utility, and building assets. The company is particularly noted for its commitment to sustainability, having completed over 300 projects centered on environmental sustainability. This includes planning and designing renewable energy projects such as wind and solar installations. NV5's expertise extends to environmental compliance, helping clients navigate complex regulatory challenges. With a workforce of around 16 employees, Celtic Energy operates primarily in the United States and the United Kingdom, focusing on enhancing community resources and promoting sustainable practices.

18. BL Companies

• Website: blcompanies.com
• Ownership type: Private
• Headquarters: Meriden, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1986
• Headcount: 201-500
• LinkedIn: bl-companies

BL Companies, founded in 1986 and based in Meriden, Connecticut, is a private architecture and engineering firm that provides integrated services across various sectors. With a workforce of approximately 489 employees, the company specializes in architecture, civil engineering, environmental consulting, and land surveying. Their environmental services are particularly noteworthy, as they include site assessments, remediation, and environmental compliance audits. The firm emphasizes employee ownership, which fosters a collaborative culture aimed at enhancing client satisfaction. BL Companies serves a wide array of markets, including energy, healthcare, and public infrastructure, and is recognized for its commitment to sustainability and community involvement. Their projects often reflect a blend of technical expertise and innovative solutions, positioning them as a reliable partner in the environmental consulting field.

19. All-Points Technology Corporation, P.C

• Website: allpointstech.com
• Ownership type: Private
• Headquarters: Waterford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2000
• Headcount: 11-50
• LinkedIn: all-points-technology-corporation-p.c

All-Points Technology Corporation, P.C. (APT) is an engineering and environmental consulting firm based in Waterford, Connecticut, established in 2000. The company provides specialized services primarily to the utility, renewable energy, land development, and telecommunications industries across New England and eastern New York. APT's expertise includes environmental siting and permitting, site planning, civil engineering, structural engineering, and construction services. They assist clients in navigating complex regulatory environments, ensuring compliance with environmental laws, and facilitating project success from inception through completion. APT employs advanced technologies, such as GIS and drone services, to enhance their environmental assessments and project planning. Their commitment to thoroughness and innovation has earned them a reputation for delivering practical solutions tailored to client needs.

20. ELM Consulting

• Website: elmconsulting.energy
• Ownership type: Private
• Headquarters: Darien, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2015
• Headcount: 1-10
• LinkedIn: e-l-m-consulting

ELM Consulting, based in Darien, Connecticut, is a private consulting firm founded in 2015. With a small team of 1-10 employees, the company focuses on providing energy efficiency and sustainability solutions. Their service offerings include ESG consulting, energy auditing, and utility incentive procurement, aimed at assisting businesses and organizations in optimizing their energy consumption and achieving sustainability objectives. ELM Consulting has successfully secured over $3.2 million in utility incentives for clients, showcasing their effectiveness in navigating energy efficiency programs. They work with a variety of clients, including developers and property managers, to enhance building performance and reduce operational costs. Their commitment to energy lifecycle management reflects a strategic approach to sustainability, emphasizing long-term benefits for both clients and the environment.

21. Vita Nuova LLC

• Website: vitanuova.net
• Ownership type: Private
• Headquarters: Newtown, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1998
• Headcount: 11-50
• LinkedIn: vita-nuova

Vita Nuova LLC, founded in 1998 and based in Newtown, Connecticut, is a consulting firm that specializes in site redevelopment and community revitalization. With a team of approximately 27 employees, the company operates across North America, providing a range of services that include environmental risk management, urban planning, and energy transition strategies. Vita Nuova collaborates with both public and private clients to tackle complex redevelopment challenges, focusing on sustainable solutions that breathe new life into distressed properties and communities. Their expertise extends to managing intricate projects, such as brownfields redevelopment and energy transition initiatives, where they help clients navigate regulatory processes and identify viable reuse options. The firm is committed to enhancing community growth and sustainability, making it a significant player in the environmental consulting industry.

Environmental Consulting Insights: Key Companies in Connecticut

Company	Headquarter	Size	Founded	Ownership
Fuss & O'Neill	Hartford, Connecticut, United States (USA)	201-500	1924	Private
Milone & MacBroom	Cheshire, Connecticut, United States (USA)	51-200	1984	Private
LCL - Génie, environnement & développement durable	Granby, Connecticut, United States (USA)	11-50	2006	Private
Triton Environmental, LLC	Guilford, Connecticut, United States (USA)	11-50	1995	Corporate
HRP Associates, Inc.	Farmington, Connecticut, United States (USA)	51-200	1982	Private
Atlas Environmental	Groton, Connecticut, United States (USA)	1-10	1994	Private
EnviroMed Services, Inc.	Meriden, Connecticut, United States (USA)	11-50	1986	Private
Cabrera Services Inc.	East Hartford, Connecticut, United States (USA)	51-200	1994	Corporate
Zuvic	Rocky Hill, Connecticut, United States (USA)	11-50	1988	Private
Freeman Companies, LLC	Hartford, Connecticut, United States (USA)	11-50	2009	Private
JKMuir - Energy & Sustainability in Public Infrastructure	Rocky Hill, Connecticut, United States (USA)	11-50	2008	Private
CCA Engineering	Brookfield, Connecticut, United States (USA)	11-50	1978	Corporate
Loureiro Engineering Associates, Inc.	Plainville, Connecticut, United States (USA)	51-200	1975	Private
LRC Group	Cromwell, Connecticut, United States (USA)	11-50	1999	Private
GEODesign, Inc.	Middlebury, Connecticut, United States (USA)	11-50	1995	Corporate
Steven Winter Associates	Norwalk, Connecticut, United States (USA)	51-200	1972	Private
Celtic Energy	Glastonbury, Connecticut, United States (USA)	11-50	2000	Corporate
BL Companies	Meriden, Connecticut, United States (USA)	201-500	1986	Private
All-Points Technology Corporation, P.C	Waterford, Connecticut, United States (USA)	11-50	2000	Private
ELM Consulting	Darien, Connecticut, United States (USA)	1-10	2015	Private
Vita Nuova LLC	Newtown, Connecticut, United States (USA)	11-50	1998	Private

Want to Find More Environmental Consulting Companies?

If you want to find more companies that provide services such as site assessments and regulatory compliance 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!