The environmental engineering industry in Pennsylvania is comprised of diverse businesses offering a range of solutions, from planning and consultation to constructional improvements. These companies are mainly concentrated on designing and executing strategies for environmental remediation, air and water quality management, waste handling, and sustainable infrastructure development. With a strong emphasis on sustainability and a dedication towards innovative practices, the industry is geared towards combating environmental challenges and paving the path towards a greener future.


Top 25 environmental engineering companies in Pennsylvania

1. Weston Solutions, Inc.

Weston Solutions is a company that offers consulting, planning, engineering, construction, and O&M solutions for complex environmental and infrastructure challenges including remediation, munitions response, range sustainment, rapid and emergency planning and response, environmental compliance and permitting, stack testing, air quality management, water engineering and management, fueling systems, security infrastructure improvements, enterprise visualization and analytics, electric vehicle charging infrastructure, oil and gas well plugging and abandonment, and renewable energy projects.


2. Civil & Environmental Consultants, Inc.

  • Website: cecinc.com
  • Headquarters: Moon Township, Pennsylvania, United States
  • Founded: 1989
  • Headcount: 501-1000
  • LinkedIn

CEC is a team of empowered professionals providing inspired solutions to complex challenges in diverse markets and industries. They offer services in air quality, civil engineering, ecological sciences, environmental engineering, manufacturing, infrastructure, surveying, waste management, and water resources.


3. EQT Corporation

  • Website: eqt.com
  • Headquarters: Pittsburgh, Pennsylvania, United States
  • Founded: 1888
  • Headcount: 501-1000
  • Latest funding type: Post Ipo Debt
  • LinkedIn

EQT is a company that focuses on energy resources and sustainability. They track ESG metrics in their digital work environment. With a commitment to responsible sourcing and reducing GHG emissions, they aim to address climate change. EQT engages with stakeholders and prioritizes occupational health and safety. They work with local landowners, pay royalties, and contribute to community impacts and safety.


4. Bala Consulting Engineers

  • Website: bala.com
  • Headquarters: King Of Prussia, Pennsylvania, United States
  • Founded: 1982
  • Headcount: 51-200
  • LinkedIn

Bala is a consulting engineering company that specializes in delivering sustainable designs for buildings. They provide services in the areas of mechanical, electrical, and structural engineering, as well as technology commissioning. With a focus on sustainability, Bala helps clients meet regulations and reduce emissions while balancing functional design and cost challenges.


5. Hanover Engineering Associates, Inc.

  • Website: hanovereng.com
  • Headquarters: Bethlehem, Pennsylvania, United States
  • Founded: 1970
  • Headcount: 51-200
  • LinkedIn

Hanover Engineering is an environmental consulting and engineering firm that specializes in project management, engineering, and compliance for the energy sector, specifically within the oil and natural gas supply chain. They provide services to both the public and private sectors, focusing on civil engineering, structural engineering, mechanical engineering, land surveying, and environmental services. The company is committed to delivering sustainable, cost-effective, and environmentally responsible solutions.


6. All4

  • Website: all4inc.com
  • Headquarters: Kimberton, Pennsylvania, United States
  • Founded: 2002
  • Headcount: 51-200
  • LinkedIn

ALL4 is a leading environmental compliance company that provides air quality consulting and a range of other services to meet changing demands. They assist clients in navigating the complex environmental regulatory landscape and offer support for specific projects or ongoing environmental governance. With a focus on education and authenticity, ALL4 helps build positive change in the industry.


7. Key Environmental Inc.

  • Website: keyenvir.com
  • Headquarters: Carnegie, Pennsylvania, United States
  • Founded: 1995
  • Headcount: 51-200
  • LinkedIn

KEY Environmental is an environmental consulting company that offers cost-efficient and practical solutions to environmental projects. They provide scientific, engineering, and long-term support solutions for sites with various compliance requirements.


8. McCarthy Engineering

McCarthy Engineering is an engineering and consulting firm that offers centralized responsibility and accountability. They provide a wealth of knowledge in environmental engineering, civil-site engineering, structural engineering, mechanical-HVAC engineering, electrical engineering, plumbing and piping, land surveying, and water resource management. They aim to exceed customer expectations and deliver unmatched industry results through their Engaged Quality Control process.


9. EMG International, LLC

  • Website: emgint.com
  • Headquarters: Wallingford, Pennsylvania, United States
  • Founded: 1996
  • Headcount: 11-50
  • Latest funding type: Grant
  • LinkedIn

EMG International, LLC is a company that specializes in providing advanced wastewater treatment solutions for various industries, including dairy and cheese manufacturing, food and beverage, and bakery. They offer services and technology for sustainability and renewable energy generation, laboratory testing, field services and operations support, and environmental consulting. With a successful track record of 25 years, EMG is known for their PurEffluentâ„¢ anaerobic technology and zero capital investment options. They are committed to integrity, ethical practices, and delivering on their promises.


10. Drexel Engineers Without Borders

Drexel EWB is a company dedicated to advancing and implementing sustainable engineering solutions in communities around the world.


11. EEMA O&M Services Group

  • Website: eema-inc.com
  • Headquarters: Harleysville, Pennsylvania, United States
  • Headcount: 11-50
  • LinkedIn

Environmental Engineering & Management Associates, Inc. (EEMA) and EEMA O & M Services Group offer creative engineering and operations solutions for the municipal and industrial water and wastewater treatment industry.


12. KJ Consulting & Environmental Services, LLC

KJ Consultants & Environmental Services LLC offers exceptional inspection services by dedicated, knowledgeable employees to ensure the continued growth of reliable and sustainable infrastructure through consulting and eco-friendly solutions.


13. Cohesive

Cohesive is a company that offers innovative solutions for the energy industry and strives to drive digital transformation in the sector. They provide long-term strategic asset lifecycle partnerships and short-term project troubleshooting to deliver optimal financial, environmental, and social outcomes for their clients and customers.


14. Evolution Sustainability Group

Evolution Sustainability Group is a consultancy and design-build energy engineering firm that develops practical, innovative, and cost-effective energy solutions to empower clients' sustainability goals.


15. Larson Design Group

Larson Design Group is an award-winning, employee-owned Architecture, Engineering, and Consulting firm. They offer full-service offerings and have a national reach, enabling them to serve public and private clients across diverse industries. They are dedicated to enhancing client relationships, developing their employee owners, and improving the communities they serve.


16. PaperWorks

  • Website: onepaperworks.com
  • Headquarters: Fort Washington, Pennsylvania, United States
  • Founded: 2008
  • Headcount: 1001-5000
  • LinkedIn

One PaperWorks is an innovative company that provides comprehensive solutions for leading brands nationwide.


17. Inteprod LLC

  • Website: inteprod.com
  • Headquarters: Eagleville, Pennsylvania, United States
  • Founded: 2004
  • Headcount: 11-50
  • LinkedIn

Inteprod is a full-service medical device product development and manufacturing company. They specialize in turning complex design ideas into sustainable devices for the medical device, MedTech industries, and environmental sciences. Their services range from concept to commercialization, offering real solutions in a wide range of medical industries.


18. DAVID RUBIN Land Collective

Land Collective is a company that specializes in landscape architecture and urban design. They offer innovative and sustainable solutions to create outdoor spaces that enhance the natural environment and improve quality of life.


19. 7group

  • Website: sevengroup.com
  • Headquarters: Sinking Spring, Pennsylvania, United States
  • Founded: 1999
  • Headcount: 11-50
  • LinkedIn

Seven Group is a company focused on regenerative work, aiming to understand how humans, their built environment, and the natural world can live and breathe together. Through learning, community, design, and storytelling, Seven Group offers transformative solutions for clients. They specialize in developing the capacity of projects and organizations to regenerate life and create a positive impact on local and regional communities.


20. Workscape

  • Website: workscapeinc.com
  • Headquarters: Pittsburgh, Pennsylvania, United States
  • Founded: 1996
  • Headcount: 11-50
  • Latest funding type: Acquired
  • LinkedIn

Workscape Inc is a digital interior construction expert that creates unique office spaces using prefabricated interior solutions. With a focus on quality, communication, schedule, and cost control, Workscape has been reinventing office spaces for over 25 years. They offer agile, sustainable architecture, affordable furnishings, and speech privacy solutions, representing Knoll and DIRTT exclusively in the region.


21. EcoIslands, LLC

  • Website: ecoislandsllc.com
  • Headquarters: Altoona, Pennsylvania, United States
  • Founded: 2009
  • Headcount: 11-50
  • Latest funding type: Seed
  • LinkedIn

EcoIslands LLC offers biological water remediation solutions for various applications, utilizing concentrated wetland technology to provide low maintenance, ultra-efficient systems that can save customers potentially millions of dollars over the life of a system.


22. Markosky Engineering

  • Website: markosky.com
  • Headquarters: Ligonier, Pennsylvania, United States
  • Founded: 1999
  • Headcount: 51-200
  • LinkedIn

Markosky Engineering Group, Inc. is an environmental and engineering company providing inspection, construction, and consultation services. With over 23 years of experience, they prioritize collaboration and preserving nature and structures. They serve public and private clients with integrity and professionalism.


23. ARRO Consulting, Inc.

ARRO Consulting is a professional services company specializing in civil/municipal, environmental compliance, and geospatial/GIS services. With a focus on the upgrade and expansion of wastewater treatment plants, ARRO offers comprehensive solutions to clients in the public and private sectors.


24. Penn E&R

  • Website: penn-er.com
  • Headquarters: Doylestown, Pennsylvania, United States
  • Founded: 1996
  • Headcount: 51-200
  • LinkedIn

Penn Environmental & Remediation, Inc is a company specializing in environmental assessment and remediation. They offer services in various markets including power, construction, industrial, insurance, land development, mining, oil and gas, waste management, water, and wastewater. With a team of experts, Penn E&R provides solutions to environmental challenges and helps clients navigate regulatory compliance. They have offices in Eastern Pennsylvania, Central Pennsylvania, Western Pennsylvania, New Jersey, and Philadelphia. The company is committed to making a positive impact in the community and is actively involved in philanthropic efforts.


25. Aftan Engineering

With decades of experience in Design, Manufacturing, Data Analysis, and Continuous Improvement, we provide unparalleled expertise in Sustainable Engineering. We're dedicated to protecting and improving the environment by helping businesses develop Green practices. As experienced business leaders, we're equally dedicated to your business, its profitability, and its growth.


Want to find more environmental engineering companies?


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