Environmental engineering companies in Arizona focus on addressing environmental challenges through innovative engineering solutions. These companies typically provide services like air and water quality management, waste management, ecological restoration, and environmental compliance support. As concerns over climate change and sustainable development rise, this industry is shifting towards more advanced technologies and sustainable practices. With a growing emphasis on renewable energy and infrastructure, environmental engineering firms are increasingly crucial in navigating regulatory complexities and helping clients implement effective environmental strategies. Arizona's vibrant ecosystem demands responsive solutions, driving firms to continuously adapt and evolve their offerings across various sectors.

The companies highlighted in this list range from small startups to large firms, featuring varying headquarter locations in Phoenix, Tucson, and Mesa. Established between the 1950s and 2010s, they possess expertise in areas such as environmental consulting, construction management, and geotechnical services. Many of these companies have built substantial reputations within the industry, serving sectors from government and agriculture to renewable energy. The size of these organizations varies significantly, from teams of a few dedicated professionals to larger corporations with hundreds of employees, reflecting a broad capacity to tackle complex projects.

Continue reading to learn about Arizona's top environmental engineering companies.

Top 21 Environmental Engineering Companies Companies in Arizona

1. 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 aligns employee interests with the company's success. The firm has been involved in numerous significant projects, including dam removals and ecological restoration efforts, showcasing their capability in environmental engineering and management. With a strong emphasis on community engagement and sustainability, SWCA continues to play a vital role in the environmental consulting industry.

2. Engineering and Environmental Consultants, Inc.

• Website: eec-info.com
• Ownership type: Corporate
• Headquarters: Tucson, Arizona, United States (USA)
• Employee distribution: United States (USA) 67%, Malaysia 33%
• Latest funding: November 2023
• Founded year: 1987
• Headcount: 11-50
• LinkedIn: engineering-%26-environmental-consultants-inc.

Engineering and Environmental Consultants, Inc. (EEC) is an engineering and environmental consulting firm based in Tucson, Arizona. Established in 1987, EEC specializes in a range of services that include air quality management, civil engineering, and waste management. The firm caters to various industries, notably manufacturing and mining, assisting clients in addressing complex environmental challenges. With a workforce of 11-50 employees, EEC emphasizes a collaborative approach to project management, ensuring that client goals are met efficiently and effectively. The company has maintained a presence in the industry for over three decades, demonstrating resilience and adaptability in a changing regulatory environment. Their focus on practical solutions and client satisfaction positions them as a relevant player in the environmental engineering sector.

3. AZTEC Engineering Group, Inc.

• Website: aztec.us
• Ownership type: Corporate
• Headquarters: Phoenix, Arizona, United States (USA)
• Employee distribution: United States (USA) 98%, Other 2%
• Latest funding: January 2006
• Founded year: 1992
• Headcount: 201-500
• LinkedIn: aztec-engineering

AZTEC Engineering Group, Inc., established in 1992 and headquartered in Phoenix, Arizona, is a consulting firm that specializes in engineering and environmental solutions. The company provides a wide array of services, including transportation, renewable energy engineering, and construction management, catering to both public and private clients. With a workforce of over 200 employees, AZTEC has built a reputation for innovative project management and a client-focused approach. They are part of the TYPSA Group, which enhances their capabilities and reach. AZTEC is particularly noted for its work in renewable energy, having developed proprietary software for optimizing solar plant designs. Their projects span various sectors, and they emphasize the importance of sustainable practices in all their endeavors. The firm operates with a philosophy that prioritizes long-term client relationships and strives to deliver effective infrastructure solutions that consider environmental impacts.

4. Vernadero Group Incorporated

• Website: vernadero.com
• Ownership type: Private
• Headquarters: Phoenix, Arizona, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1999
• Headcount: 11-50
• LinkedIn: vernadero-group-incorporated

Vernadero Group Incorporated, established in 1999 and based in Phoenix, Arizona, is a private environmental consulting and engineering services firm. With a workforce of approximately 35 employees, the company has carved out a niche in providing technical support primarily to U.S. government departments and agencies. Their service offerings include environmental resource planning, regulatory compliance, air, water, soils, and hazards compliance, as well as biological resource management. Vernadero's projects often involve complex environmental assessments and compliance strategies, which are critical for government operations. The firm is veteran-owned and emphasizes a culture of quality and client retention, evidenced by their repeat business and positive performance assessments. Their commitment to cybersecurity, as demonstrated by achieving compliance with the Department of Defense's Cybersecurity Maturity Model Certification (CMMC) 2.0, showcases their proactive approach to safeguarding sensitive information in their operations. Overall, Vernadero Group is positioned as a reliable partner in the environmental engineering sector, particularly for government-related projects.

5. WestLand, a Trinity Consultants Team

• Website: westlandresources.com
• Ownership type: Private
• Headquarters: Tucson, Arizona, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: $4.7M, February 2021
• Founded year: 1997
• Headcount: 201-500
• LinkedIn: westland-resources

WestLand, a Trinity Consultants Team, is an engineering and environmental consulting firm based in Tucson, Arizona, founded in 1997. The company employs between 201 and 500 professionals and has established a reputation for providing a wide range of services, including cultural resources management, environmental planning, GIS, landscape architecture, and engineering. WestLand's expertise is particularly valuable in helping clients navigate complex regulatory environments, ensuring compliance with environmental standards. Their clientele includes government agencies, developers, and various industrial sectors, reflecting their adaptability and commitment to addressing diverse project needs. In February 2021, WestLand secured funding of approximately $4.7 million, which may support their ongoing projects and expansion efforts. The firm operates across several states, including Arizona, Nevada, and parts of the Pacific Northwest, enhancing their reach and influence in the environmental engineering sector.

6. KCB Consultants Ltd.

• Website: kcbconsultants.com
• Ownership type: Private
• Headquarters: Phoenix, Arizona, United States (USA)
• Employee distribution: Australia 47%, Canada 28%, Peru 11%, Other 15%
• Founded year: 2013
• Headcount: 1-10
• LinkedIn: kcb-consultants-ltd

KCB Consultants Ltd. is an engineering consulting firm based in Phoenix, Arizona, specializing in geoscience and environmental services. Founded in 2013, the company operates as the U.S. subsidiary of Klohn Crippen Berger, an internationally recognized engineering consulting company. KCB Consultants focuses on providing expert consulting to businesses and organizations, emphasizing responsible resource use and lifecycle management of facilities. Their service offerings include engineering, geoscience, and environmental consulting, addressing the needs of clients across multiple industries. The firm employs a range of technical specialties, including geotechnical, civil, mechanical, and structural engineering, as well as hydrology, hydrogeology, and geochemistry. KCB Consultants also integrates environmental and social services into their projects, ensuring a comprehensive approach to design and assessment. With a small team of dedicated professionals, they are committed to attracting and retaining talent to tackle challenging projects in the environmental engineering space.

7. EPG Environmental Planning Group, LLC

• Website: epgllc.co
• Ownership type: Private Equity
• Headquarters: Phoenix, Arizona, United States (USA)
• Employee distribution: United States (USA) 74%, Iran 26%
• Latest funding: November 2012
• Founded year: 1999
• Headcount: 51-200
• LinkedIn: epg-inc.-environmental-planning-group

EPG Environmental Planning Group, LLC, founded in 1999 and based in Phoenix, Arizona, is an environmental consulting firm that provides a range of services including planning, permitting, and compliance. The company serves various sectors, notably energy, transportation, and telecommunications, helping clients navigate complex environmental regulations. EPG's team is skilled in conducting environmental impact assessments, managing compliance, and offering reclamation services. They have worked on numerous projects, including those related to power generation and transportation infrastructure, demonstrating their capability in handling significant environmental challenges. With a workforce of around 31 employees, EPG emphasizes building strong relationships with clients and regulatory agencies to ensure project success while protecting ecological integrity. Their acquisition by Terracon in 2020 has further expanded their reach and resources in the environmental consulting market.

8. Ncs Engineers

• Website: ncseng.com
• Ownership type: Private Equity
• Headquarters: Phoenix, Arizona, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: April 2025
• Founded year: 1998
• Headcount: 51-200
• LinkedIn: ncs-engineers

Ncs Engineers is an engineering consulting firm based in Phoenix, Arizona, founded in 1998. The company specializes in water and wastewater services, providing a comprehensive range of solutions that include drinking water quality assessments, wastewater management, and regulatory compliance assistance. With a team of over 50 professionals, Ncs Engineers operates multiple offices across the United States, including locations in California, Nevada, Texas, and Maryland. Their clientele consists of both public agencies and private sector organizations, reflecting their capability to address a variety of water resource management needs. Ncs Engineers has been involved in significant projects that focus on innovative water treatment methods and regulatory compliance, showcasing their expertise in the field. They have also contributed to water quality research through partnerships with organizations like the Water Research Foundation, further establishing their role in advancing water engineering practices.

9. RITOCH-POWELL & Associates, an Ardurra Company

• Website: rpaeng.com
• Ownership type: Private
• Headquarters: Phoenix, Arizona, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1978
• Headcount: 51-200
• LinkedIn: ritoch-powell-%26-associates

RITOCH-POWELL & Associates, an Ardurra Company, is a private engineering firm based in Phoenix, Arizona, founded in 1978. The company specializes in a wide array of services, particularly in water and wastewater treatment, environmental consulting, and ecological restoration. They work closely with municipalities and private utilities, providing innovative solutions to infrastructure challenges. Their expertise includes regulatory permitting, water quality monitoring, and habitat management, showcasing their commitment to environmental protection and sustainability. RITOCH-POWELL's team consists of seasoned engineers and environmental scientists who leverage advanced modeling techniques and traditional engineering practices to deliver effective solutions. As part of Ardurra, they benefit from a broader network of resources and expertise, enhancing their capabilities in the environmental sector.

10. Certerra (Western Technologies)

• Website: wt-us.com
• Ownership type: Private
• Headquarters: Phoenix, Arizona, United States (USA)
• Employee distribution: United States (USA) 99%, Other 1%
• Founded year: 1955
• Headcount: 201-500
• LinkedIn: western-technologies

Certerra (Western Technologies) is a private engineering firm based in Phoenix, Arizona, specializing in environmental consulting, geotechnical engineering, materials testing, and non-destructive testing services. Founded in 1955, the company has nearly 70 years of experience in providing high-quality engineering solutions to various industries, including transportation, healthcare, and mining. Their services include environmental assessments, compliance audits, and remediation projects, which are essential for managing environmental risks. The firm has worked on notable projects such as the Solana Generating Station and Sky Harbor International Airport, showcasing their expertise in handling complex engineering challenges. In 2021, Western Technologies merged with RMA Companies, which has further strengthened their service capabilities and market presence. This merger allows them to leverage technology-enabled laboratory testing and quality management services, enhancing their role in critical infrastructure projects.

11. Sol Solutions, LLC

• Website: solsolutions.net
• Ownership type: Private
• Headquarters: Scottsdale, Arizona, United States (USA)
• Employee distribution: United States (USA) 89%, Puerto Rico 11%
• Founded year: 2009
• Headcount: 51-200
• LinkedIn: sol-environmental-solutions

Sol Solutions, LLC, founded in 2009 and based in Scottsdale, Arizona, is an environmental consulting firm dedicated to providing comprehensive services in environmental compliance, restoration, and sustainability planning. The company primarily serves government clients, including the U.S. Army and Air Force, assisting them in meeting regulatory requirements and managing environmental programs effectively. With a team of skilled professionals, Sol Solutions offers a range of services, including multi-media environmental compliance audits, hazardous materials management, and sustainability initiatives. Their expertise extends to natural and cultural resource management, ensuring that projects align with environmental regulations and best practices. The firm is recognized for its commitment to quality and integrity, as evidenced by positive testimonials from clients who appreciate their proactive approach and attention to detail. As an 8(a) Certified, Service-Disabled Veteran-Owned Small Business, Sol Solutions is positioned to deliver reliable and efficient environmental services across various projects.

12. SEG International

• Website: azseg.com
• Ownership type: Private
• Headquarters: Phoenix, Arizona, United States (USA)
• Employee distribution: Mexico 37%, Egypt 35%, United States (USA) 22%, Other 6%
• Founded year: 2009
• Headcount: 51-200
• LinkedIn: sustainability-engineering-group-llc

SEG International, or Sustainability Engineering Group (SEG), is a civil and architectural engineering firm based in Phoenix, Arizona. Founded in 2009, the company has grown to employ around 89 professionals and operates in multiple locations, including offices in Dallas and Morgantown. SEG specializes in sustainable design solutions, offering a wide array of services that include smart city planning, environmental consulting, and project management. Their clientele consists of municipalities and private developers who seek to create compliant and environmentally friendly infrastructure. SEG emphasizes collaboration and innovation in their projects, ensuring that sustainability principles are integrated throughout the development process. Their services cover various aspects of civil engineering, including water resources, waste management, and urban planning, all aimed at fostering sustainable practices in the built environment.

13. EPS Group, Inc.

• Website: epsgroupinc.com
• Ownership type: Private
• Headquarters: Mesa, Arizona, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2003
• Headcount: 201-500
• LinkedIn: eps-group-inc

EPS Group, Inc., founded in 2003 and based in Mesa, Arizona, is a civil engineering consulting firm that specializes in land development, infrastructure, and environmental challenges. With a workforce of approximately 214 employees, the company serves both private developers and municipalities across Arizona and Colorado. Their services include engineering, surveying, and planning, with a strong emphasis on enhancing community development. EPS Group is recognized for its expertise in various areas, including flood control, water resources, and municipal engineering, which are essential to environmental engineering. The firm operates multiple offices in Arizona and Colorado, allowing them to effectively address regional needs and contribute to sustainable development initiatives.

14. Earthworks Environmental, LLC

• Website: earthworksenv.com
• Ownership type: Private
• Headquarters: Phoenix, Arizona, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2014
• Headcount: 51-200
• LinkedIn: earthworks-environmental-llc

Earthworks Environmental, LLC, based in Phoenix, Arizona, is an environmental consulting firm that specializes in compliance management services, particularly in stormwater and dust control. Founded in 2014, the company has grown from serving a single client to operating across 26 markets nationwide. Earthworks provides essential services such as the development and upkeep of Stormwater Pollution Prevention Plans (SWPPP), regulatory permit applications, and compliance assistance. Their proprietary software, ERX, facilitates records retention and digital inspections, showcasing their innovative approach to compliance management. The firm maintains strong relationships with regulatory bodies, which helps clients avoid violations and ensures adherence to environmental regulations. With a dedicated team of professionals, Earthworks is committed to fostering a culture of excellence and empowering its employees to advance their skills in the environmental consulting field.

15. Wilson Engineers, LLC

• Website: wilson-engineers.com
• Ownership type: Private
• Headquarters: Tempe, Arizona, United States (USA)
• Employee distribution: United States (USA) 98%, Other 2%
• Founded year: 1985
• Headcount: 51-200
• LinkedIn: wilson-engineers-llc

Wilson Engineers, LLC, based in Tempe, Arizona, is an engineering firm that specializes in water, wastewater, reclaimed water, and electrical infrastructure. Founded in 1985, the company has built a strong reputation for providing comprehensive design and construction management services. They cater to municipalities, private water companies, and other engineering firms, emphasizing efficient project delivery and innovative solutions. With a workforce of over 180 professionals, Wilson Engineers has successfully completed projects worth over a billion dollars in Arizona alone. Their expertise includes advanced technologies in water and wastewater treatment, such as membrane design and micro-tunneling. Recently, they expanded their capabilities by acquiring RO Anderson Engineering, enhancing their service offerings in the Southwest. This strategic move reflects their commitment to growth and excellence in the environmental engineering sector.

16. Coe & Van Loo Consultants Inc.

• Website: cvlci.com
• Ownership type: Private
• Headquarters: Phoenix, Arizona, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1958
• Headcount: 51-200
• LinkedIn: coe-%26-van-loo-consultants-inc-

Coe & Van Loo Consultants Inc. (CVL) is a civil engineering firm based in Phoenix, Arizona, established in 1958. The company specializes in a range of engineering and design services, including land surveying, water and wastewater management, stormwater management, and landscape architecture. CVL serves both public and private sector clients, providing comprehensive solutions to infrastructure and environmental challenges. Their projects often involve critical aspects of environmental engineering, particularly in water resource management and stormwater control. With a team of licensed professionals, CVL emphasizes a collaborative approach to project execution, ensuring that client goals are met efficiently. The firm has been recognized for its work, including awards for engineering excellence, which highlights its commitment to quality and innovation in the engineering field.

17. JE Fuller/Hydrology & Geomorphology, Inc

• Website: jefuller.com
• Ownership type: Private
• Headquarters: Tempe, Arizona, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1995
• Headcount: 11-50
• LinkedIn: je-fuller-hydrology-%26-geomorphology-inc

JE Fuller/Hydrology & Geomorphology, Inc. is an engineering consulting firm based in Tempe, Arizona, founded in 1995. The company specializes in hydrology, hydraulics, and environmental services, providing expert solutions to a variety of public and private clients primarily in the Southwest United States. With a team of 34 employees, JE Fuller emphasizes a client-driven model that prioritizes personalized service and technical expertise. Their services include flood risk management, dam safety assessments, and compliance with environmental regulations such as the National Environmental Policy Act (NEPA) and the Clean Water Act (CWA). The firm has developed strong relationships with federal agencies, enhancing their ability to navigate complex regulatory environments. Their commitment to quality and integrity is reflected in their employee ownership structure, which fosters a culture of trust and accountability. Over the years, JE Fuller has successfully completed numerous projects, demonstrating their capability in addressing intricate environmental challenges.

18. Hoque & Associates, Inc.

• Website: hoqueandassociates.com
• Ownership type: Private
• Headquarters: Phoenix, Arizona, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1997
• Headcount: 11-50
• LinkedIn: hoque-%26-associates-inc.

Hoque & Associates, Inc. is a private engineering firm based in Phoenix, Arizona, founded in 1997. The company focuses on geotechnical consulting, materials testing, and environmental engineering. With a team of experienced professionals, Hoque & Associates is dedicated to providing high-quality engineering solutions that address complex challenges faced by their clients. Their services include environmental site assessments, solid waste engineering, and construction materials testing. The firm has successfully completed numerous projects across Arizona, including significant work for municipalities and private sector clients. Their commitment to innovation and quality is evident in their approach to projects, which often involve collaboration with various stakeholders to ensure compliance with environmental regulations and to enhance community value.

19. Dibble

• Website: dibblecorp.com
• Ownership type: Private
• Headquarters: Phoenix, Arizona, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1962
• Headcount: 51-200
• LinkedIn: dibble-engineering

Dibble is an engineering and construction management firm based in Phoenix, Arizona, established in 1962. With a workforce of approximately 154 employees, the company serves both private and public sector clients. Their service offerings include airport development, flood control, infrastructure rehabilitation, land development, program management, structural engineering, survey and GIS, traffic engineering, transportation, and water and wastewater management. Dibble has a strong focus on delivering quality projects that meet client needs while also emphasizing community involvement and employee development. Their commitment to social responsibility is evident through initiatives like their Community Action Team, which has supported numerous organizations and activities over the years. This dedication to community and environmental stewardship positions Dibble as a significant player in the engineering sector, particularly in areas that impact environmental sustainability.

20. Transcon Environmental

• Website: transcon.com
• Ownership type: Private
• Headquarters: Mesa, Arizona, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1999
• Headcount: 51-200
• LinkedIn: transcon-environmental

Transcon Environmental, founded in 1999 and based in Mesa, Arizona, is a private environmental consulting firm that provides a wide range of services. The company specializes in forestry and utility management, environmental assessments, and sustainability solutions. They cater to various industries, including agriculture, electric utilities, and municipalities, assisting clients in navigating complex environmental regulations. Transcon's team comprises experts in ecology, archaeology, and compliance, among other fields, which enhances their ability to deliver tailored solutions. Their commitment to sustainability is evident in their innovative approaches and technology-driven services, aimed at helping clients achieve their environmental goals. As an employee-owned company, Transcon fosters a culture of accountability and dedication among its workforce, further strengthening its position in the environmental consulting industry.

21. Montgomery & Associates

• Website: elmontgomery.com
• Ownership type: Private
• Headquarters: Tucson, Arizona, United States (USA)
• Employee distribution: United States (USA) 63%, Chile 23%, Argentina 14%
• Founded year: 1984
• Headcount: 51-200
• LinkedIn: montgomery-%26-associates

Montgomery & Associates, founded in 1984, is a consulting firm based in Tucson, Arizona, specializing in hydrogeology and water resource management. With a workforce of approximately 150 employees, the firm has established itself as a key player in the water resource sector, providing a variety of services such as water supply planning, environmental assessments, and groundwater modeling. Their clientele spans agriculture, mining, and water management sectors, reflecting their capability to address complex challenges in water resource sustainability. The firm is also involved in community engagement and education, supporting future water professionals through scholarships and active participation in local initiatives. Their projects often require navigating intricate regulatory environments, showcasing their expertise in ensuring compliance and promoting sustainable practices in water use.

Environmental Engineering Companies Insights: Key Companies in Arizona

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