Environmental consulting companies work in an essential industry that partners with businesses to ensure they are compliant with environmental statutes and regulations. These companies offer a variety of services such as environmental assessment, remediation, environmental health and safety, sustainability, and applied data and technology. As companies in Ohio and throughout the world increasingly recognize the importance of sustainable practices, the role of environmental consultants is expanding. Looking forward, this industry is poised for tremendous growth as they play a critical role in helping businesses navigate complex environmental regulations and advance sustainability goals.


Top 24 environmental consulting companies in Ohio

1. Verdantas

Verdantas is an engineering company focused on developing engineered solutions to improve quality of life while protecting natural resources. They offer services in environmental assessment and remediation, environmental health and safety, sustainability, applied data and technology, civil infrastructure, and natural resources and environmental planning.


2. Environmental Quality Management, Inc.

  • Website: eqm.com
  • Headquarters: Cincinnati, Ohio, United States
  • Founded: 1990
  • Headcount: 201-500
  • Latest funding type: Acquired
  • LinkedIn

Environmental Quality Management, Inc. (EQM) is a leading environmental consulting, stack testing, remediation, and construction company providing expertise in engineering and environmental compliance to industrial, public, and government sectors.


3. Melink Corporation

Melink Corporation is a company that specializes in green building services and solutions. They offer services like building commissioning, custom service solutions, and test, adjust, and balance. Their goal is to create a more sustainable world while increasing profitability and reducing carbon emissions.


4. EnviroScience, Inc.

  • Website: enviroscienceinc.com
  • Headquarters: Stow, Ohio, United States
  • Founded: 1989
  • Headcount: 51-200
  • Latest funding type: Private Equity
  • LinkedIn

EnviroScience is an environmental firm with a diverse team of biologists, environmental engineers, scientists, and divers. They offer comprehensive in-house services and an integrated approach to solving environmental challenges, saving clients time and reducing costs. Their services include wetland delineation, permits, mitigation planning, aquatic surveys, commercial diving, ecological restoration, emergency response, laboratory analysis, stormwater management, and threatened and endangered species assessments.


5. Dakota Software

Dakota Software provides integrated EHS compliance and ESG management solutions. Their tools help companies track and measure progress towards ESG goals, automate regulatory tracking and compliance activities, and improve safety performance. With a comprehensive library and applicability engine, they ensure accurate and up-to-date compliance plans. Their ProActivity Suite offers end-to-end EHS management, including health and safety, training and learning, and ESG and sustainability solutions.


6. Partners Environmental Consulting, Inc.

Partners Environmental Consulting is a company that specializes in providing environmental consulting services. They offer a wide range of services including compliance assessments, remediation projects, and environmental planning. With their expertise and knowledge, they help clients navigate complex environmental regulations and develop sustainable solutions.


7. Coldwater Consulting, LLC

Coldwater Consulting is a sustainable solutions company that provides cost-effective services in watershed planning, stormwater management, stream restoration, brownfield restoration, and environmental permitting.


8. Affinity Consultants, Inc.

Affinity Consultants, Inc. is an environmental, health and safety (EHS) consulting firm that specializes in assisting organizations and communities in reducing their environmental impacts while improving workplace operating conditions.


9. Emerald Environmental Services, Inc.

Emerald Environmental is a waste management and environmental services company that offers sustainable solutions for waste management, stormwater management, industrial hygiene, and petroleum retail/UST support services. They provide compliance testing, corrosion protection, inspections, assessments, remediation, risk assessments, and more. They are dedicated to addressing regulatory concerns, reducing liability exposure, and delivering cost-effective solutions. Their highly qualified staff ensures professional and reliable services on time and within budget.


10. Alfagreen Supreme

Alfagreen Supreme is a company that offers a range of products and services related to sustainability and environmental solutions. They provide innovative solutions for businesses and individuals looking to reduce their carbon footprint and adopt greener practices. With a focus on sustainability, their offerings include eco-friendly products, consulting services, and educational resources.


11. R2O Consulting LLC

R2O Consulting, LLC is a consulting firm that specializes in delivering innovative and sustainable solutions to complex environmental challenges. They assist clients in planning for the rehabilitation, upgrade, and replacement of aging infrastructure assets. With a focus on water resources, they provide cost-effective, sustainable infrastructure solutions that benefit the environment and communities. Their services include integrated planning, hydraulic and water quality modeling, and expertise in regulatory compliance.


12. Emerald Built Environments

EmeraldBE is a company that provides verification services for businesses.


13. Middough Inc.

  • Website: middough.com
  • Headquarters: Cleveland, Ohio, United States
  • Founded: 1950
  • Headcount: 501-1000
  • LinkedIn

Middough is a nationally ranked full-service project solutions firm that brings experience and expertise to every client's project in multiple core industries. With a deep knowledge and talented staff, Middough adds value to critical areas of projects, organizations, and businesses.


14. Edge

  • Website: edgela.com
  • Headquarters: Columbus, Ohio, United States
  • Founded: 2003
  • Headcount: 11-50
  • LinkedIn

EDGELA is a landscape architecture and urban design company that specializes in transforming environments through thoughtful planning and purposeful design. They offer expertise in creating impactful solutions that are economically, socially, and environmentally sustainable.


15. Hydro, a PSG brand

Hydrosystemsco.com is a company that offers various products and services related to hydro systems. They provide solutions for water storage, treatment, and management. With a focus on sustainability and efficiency, they aim to help their customers optimize their water usage.


16. KMC Environmental Services

  • Website: kmcenv.com
  • Headquarters: Westlake, Ohio, United States
  • Headcount: 1-10

Environmental Sustainability Process Consultants, Environmental Impact Study, Heritage Evaluation, Pulp and Paper Process, Biofuels Project Development


17. Envantage, Inc.

Envantage is a company that provides comprehensive energy and carbon management solutions. They offer a range of services including data analysis, reporting, and strategy development to help businesses reduce their environmental impact and optimize energy efficiency.


18. Orsanco

  • Website: orsanco.org
  • Headquarters: Cincinnati, Ohio, United States
  • Founded: 1948
  • Headcount: 11-50
  • LinkedIn

ORSANCO is a water quality organization dedicated to the preservation and improvement of the Ohio River and its tributaries. They engage in various activities such as monitoring water quality, conducting research, and implementing nutrient reduction initiatives.


19. Trayak

  • Website: trayak.com
  • Headquarters: Mason, Ohio, United States
  • Founded: 2010
  • Headcount: 11-50
  • LinkedIn

Trayak Strategic Consulting is a consulting firm offering expert services and automation & customization solutions to help companies develop responsible packaging and products while maintaining profitability.


20. DISC Environmental Service

Disc Environmental Services offers waste management solutions for businesses and communities.


21. Washington Swcd

Washington County SWCD is a unit of local government founded in 1945, assisting agricultural producers, landowners, and municipalities in managing, conserving, and best using natural resources. Their priority is protecting soil and water resources while maintaining the viability of agriculture as a preferred land use.


22. Cincinnati Atlas

  • Website: cityatlas.net
  • Headquarters: Norwood, Ohio, United States
  • Headcount: 11-50

City Atlas is a website that offers curated information and resources on sustainable living, urban development, and innovative technologies for urban environments.


23. AIM2Flourish

  • Website: aim2flourish.com
  • Headquarters: Cleveland, Ohio, United States
  • Headcount: 11-50

AIM2Flourish is an initiative of the Fowler Center for Business as an Agent of World Benefit at the Weatherhead School of Management — Case Western Reserve University to connect students with business innovators and celebrate sustainable business innovations aligned with the UN Global Goals.


24. Kay-Twelve

Kay-Twelve is a company that specializes in creating innovative learning environments for schools. They provide furniture and resources that help teachers and students build strong connections and meet the needs of individual learning styles.


Want to find more environmental consulting companies?


If you want to find more companies that offer distinctive services in environmental compliance, sustainability, and remediation 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:


  • Ownership: Which of these are private equity backed? Which are family-owned?
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...and a lot more!