The environmental engineering industry in California is a diverse and dynamic field, focusing on creating and improving solutions to environmental issues. Companies in this sector provide crucial services such as consulting, engineering, and technical support, catering to needs in environmental science, construction, and energy efficiency. They also delve into research and information technology to continually innovate and enhance their offerings. The future of the industry is leaning towards clean energy and sustainable development, powered by advancements in technology and growing environmental awareness.


Top 24 environmental engineering companies in California

1. Tetra Tech

  • Website: tetratech.com
  • Headquarters: Pasadena, California, United States
  • Founded: 1966
  • Headcount: 10001+
  • Latest funding type: Ipo
  • LinkedIn

Tetra Tech is a leading provider of consulting, engineering, and technical services worldwide. The company offers integrated solutions to meet clients' needs in areas such as environmental science, research, engineering, construction, and information technology.


2. Legence

  • Website: wearelegence.com
  • Headquarters: San Jose, California, United States
  • Founded: 1963
  • Headcount: 1001-5000
  • Latest funding type: Acquired
  • LinkedIn

Legence is a leading company in the clean energy finance industry, providing sustainable and high-performance solutions for built environments. With over 40 years of experience, Legence offers services such as retro-commissioning, energy efficiency, solar photovoltaics, and energy as a service. They aim to improve the performance and sustainability of spaces we occupy.


3. Partner Engineering & Science, Inc.

  • Website: partneresi.com
  • Headquarters: Torrance, California, United States
  • Founded: 2007
  • Headcount: 501-1000
  • LinkedIn

Partner ESI is a full-service engineering, environmental, and energy consulting and design firm. They provide a range of services including geotechnical services, environmental assessments, construction inspections, and quality testing. Partner ESI is committed to understanding their clients' business needs and offers expertise in sustainable building, telecom sustainability, and renewable energy consulting.


4. Dudek

  • Website: dudek.com
  • Headquarters: Encinitas, California, United States
  • Founded: 1980
  • Headcount: 501-1000
  • LinkedIn

Dudek is a multidisciplinary firm that offers environmental planning, reliable power, climate resilience, human placemaking, and lasting infrastructure solutions. With a team of over 700 experts across various disciplines, we work on challenging projects that have a direct impact on our communities. Our passion for excellence drives our progress and we strive to foster diversity, equity, and inclusion in all aspects of our work.


5. SCS Engineers

SCS Engineers is a company that offers environmental consulting and engineering services. They specialize in solid waste management, renewable energy, and environmental remediation.


6. E2 Consulting Engineers, Inc.

  • Website: e2.com
  • Headquarters: Emeryville, California, United States
  • Founded: 1988
  • Headcount: 501-1000
  • LinkedIn

E2 Consulting Engineers, Inc. is an engineering and consulting firm specializing in environmental investigation, permitting, and remediation. They offer a range of services including construction management, construction inspection, engineering and design, and project management. E2's M2M® software provides modules for end-to-end program management and construction inspection. Their customer groups may include federal agencies, technology companies, transportation entities, and utilities. E2's business model involves providing services and software solutions to various industries. Relevant keywords for their offering include environmental services, engineering, construction management, and software solutions. The company can be categorized under the industry of environmental consulting and engineering. Their customers may include government agencies, technology firms, transportation companies, and utilities. Other relevant keywords include sustainability, safety, and diversity.


7. RMA Group, Inc.

  • Website: rmacompanies.com
  • Headquarters: Rancho Cucamonga, California, United States
  • Founded: 1962
  • Headcount: 201-500
  • Latest funding type: Private Equity
  • LinkedIn

RMA Companies is a growing national provider of technology-enabled testing, inspection, and certification services. They support innovation in new product development, quality assurance for project delivery, and engineered solutions for asset management. They offer professional services in environmental consulting, geotechnical engineering, geophysics and subsurface imaging, pavement engineering, quality management, non-destructive testing, construction inspection, and product certification for critical infrastructure projects. RMA Companies is committed to the sustainable development of the communities they serve.


8. Etic

  • Website: eticeng.com
  • Headquarters: Pleasant Hill, California, United States
  • Founded: 1991
  • Headcount: 51-200
  • LinkedIn

ETIC is an environmental consulting and engineering company that provides turnkey services in remedial and clean construction. They are dedicated to protecting the health and safety of the community and the environment by identifying environmental threats and developing practical and sustainable solutions.


9. Geo-Logic Associates, Inc.

  • Website: geo-logic.com
  • Headquarters: Ontario, California, United States
  • Founded: 1991
  • Headcount: 201-500
  • LinkedIn

Geo-Logic Associates (GLA) is an employee-owned, multidisciplinary environmental, civil, and geotechnical engineering consulting firm. With over 250 employees in 26 offices worldwide, GLA provides solutions for landfills, mines, contaminated sites, municipal projects, natural resources, and water resources.


10. MP Environmental Services, Inc.

  • Website: mpenviro.com
  • Headquarters: Bakersfield, California, United States
  • Founded: 1944
  • Headcount: 201-500
  • LinkedIn

MP Enviro is a company that offers environmental solutions and services. They provide various products and services related to waste management, recycling, and environmental consulting. Their expertise lies in helping businesses adopt sustainable practices and comply with environmental regulations.


11. Kmea

  • Website: kmea.net
  • Headquarters: National City, California, United States
  • Founded: 1996
  • Headcount: 51-200
  • LinkedIn

KMEA is a company offering services in environmental consulting, project & construction management, energy, sustainability & resiliency, architecture & engineering, water quality, air quality, and biological resources. They serve federal and state/local government, education, energy, and infrastructure markets. KMEA provides expertise and solutions to clients, partners, and industry professionals.


12. PACE Advanced Water Engineering

  • Website: pacewater.com
  • Headquarters: Fountain Valley, California, United States
  • Founded: 1987
  • Headcount: 51-200
  • Latest funding type: Grant
  • LinkedIn

PACE is a civil engineering firm specializing in advanced water resource services. They provide innovative and practical engineering solutions for groundwater recharge, stormwater management, and water treatment. They focus on developing environmentally sustainable designs and offer services in physical modeling, pilot-scale testing, and water quality modeling.


13. Citadel EHS

Citadel EHS is a company that specializes in providing environmental, health, and safety solutions to various industries. They offer a wide range of services, including air quality monitoring, hazardous materials management, and engineering consultancy. With a team of experts, they ensure comprehensive strategies and solutions to address clients' challenges and strengthen their businesses.


14. Watearth

  • Website: watearth.com
  • Headquarters: Los Angeles, California, United States
  • Founded: 2008
  • Headcount: 11-50
  • LinkedIn

Watearth is a leading firm in water resources and environmental solutions. With a focus on sustainable practices, the company offers planning, design, and construction support services. They specialize in integrated water resources consulting, watershed modeling, green infrastructure, and stormwater management. Watearth has a diverse staff and strong business relationships, allowing them to deliver consistent and dependable solutions. They serve public and private clients across various sectors nationwide.


15. CarbonCapture Inc.

  • Website: carboncapture.com
  • Headquarters: Pasadena, California, United States
  • Founded: 2019
  • Headcount: 11-50
  • Latest funding type: Series A
  • LinkedIn

CarbonCapture Inc. is a company that specializes in direct air capture and storage of carbon dioxide (CO2). They provide third-party verified carbon removal credits and use a deeply modular, open architecture platform for their direct air capture process. Their technology efficiently filters CO2 out of the atmosphere using zero emissions energy. The captured CO2 is securely stored in deep geological formations for more than 1,000 years. CarbonCapture Inc. is leading the way in decarbonizing the atmosphere and offers high-quality carbon removal credits.


16. Davids Engineering, Inc.

Davids Engineering is a company dedicated to agricultural water management and environmental water stewardship. They provide modernization planning, design, and construction services, as well as environmental monitoring solutions. Their passion lies in achieving sustainable groundwater management and enhancing agricultural productivity while improving environmental stewardship.


17. Innovex Environmental Management, Inc.

  • Website: innovex.net
  • Headquarters: Concord, California, United States
  • Founded: 2002
  • Headcount: 11-50
  • LinkedIn

INNOVEX is an environmental engineering company that specializes in providing innovative solutions and services for managing and mitigating environmental risks. They offer a wide range of services including health and safety practice development, compliance monitoring, hazardous material cleanup, and engineering solutions. With their experienced staff and expertise in the field, they help clients navigate complex environmental challenges and ensure compliance with regulations. Contact INNOVEX for reliable and effective environmental management solutions.


18. Trussell

Trussell is an environmental engineering consulting firm specializing in water quality solutions. They offer innovative and cost-effective services in water, wastewater, reuse, and desalination. With technical expertise and a focus on sustainability, Trussell provides safe and reliable solutions to their customers and partners.


19. Exergy Systems, Inc.

  • Website: exergycorp.com
  • Headquarters: Irvine, California, United States
  • Founded: 2004
  • Headcount: 11-50
  • Latest funding type: Non Equity Assistance
  • LinkedIn

Exergy Systems Inc. provides advanced reuse and recycling technologies for circular manufacturing, focusing on minimizing global impact and achieving net-zero resource footprint. Their services include point-of-use recycling, industrial water recycling, and custom-designed plant-wide closed loop to recycle and purify water and chemicals for reuse.


20. Trak Environmental Group Inc

Trak Enviro is a company that offers environmental products and solutions to industries. They provide consulting, engineering services, equipment and systems for air pollution control, wastewater treatment, and more.


21. JMH Weiss Inc.

  • Website: jmhweiss.com
  • Headquarters: San Jose, California, United States
  • Founded: 1967
  • Headcount: 11-50
  • LinkedIn

JMH Weiss is a civil engineering and land development company that provides sustainable engineering solutions to commercial, industrial, residential, institutional, advanced technology, and healthcare facilities worldwide.


22. Harris & Associates

Harris & Associates is a leading provider of civil engineering, construction management, and environmental consulting services. With over 40 years of experience, we specialize in improving communities through smart, safe, and sustainable planning, design, and construction solutions. Our team of dedicated employee owners is committed to delivering client success and creating better places to live.


23. Joe Hill Consulting & Engineering Corporation

  • Website: joehillce.com
  • Headquarters: San Francisco, California, United States
  • Founded: 2007
  • Headcount: 11-50
  • LinkedIn

Joe Hill Consulting Engineers (JHCE) is a growing Civil and Environmental Engineering firm that serves select Bay Area clients. They specialize in addressing the needs of San Francisco’s $4.6 Billion Water System Improvement Program, delivering sensible, sustainable solutions.


24. Metro Services Group

Metro Services is a facility services company based in California. We offer a wide range of services including cleaning, engineering, and consulting. Our team is dedicated to providing high-quality services while prioritizing sustainability and environmental impact. We have a strong focus on carbon neutrality and constantly strive to develop practices that benefit the environment. We are currently hiring for union janitorial positions in Menlo Park.


Want to find more environmental engineering companies?


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