Trihydro stands out as a leading Ohio engineering and environmental consulting firm, not just for our extensive experience dating back to 1984, but for our approach. We view each project as a collaborative partnership, working closely with our clients to develop tailored solutions that address their specific project needs. Our team of professional engineers, geologists, scientists, and regulatory experts is adept at turning a strategic vision into a practical plan or design and seeing it through to project delivery.
Trihydro currently has team members based in Ohio. Our clients benefit from the extensive resources and broad expertise of a large firm, while also enjoying the personalized attention and responsiveness of a smaller firm.
Our history of working in Ohio allows us to leverage our in-depth knowledge of local regulations and environmental challenges. Our strong relationships with federal, state, and local regulatory agencies, including the Ohio Environmental Protection Agency (Ohio EPA) and United States Environmental Protection Agency (USEPA) Region V, allow us to navigate complex compliance requirements effectively. As environmental regulations continue to evolve, partnering with a firm that stays ahead of the curve is crucial. Trihydro is your trusted partner to find solutions to these challenges and achieve your project goals.

Air Quality Compliance
Air quality regulations are some of the most complex and challenging of all the environmental regulations that exist today. Since the passing of the Clean Air Act (CAA) Amendments of 1990, there has been an evolution of regulations aimed at reducing air pollutants (e.g., SO2, NOx, CO, VOC, PM, PM10, PM2.5, GHGs). Operators are often challenged in keeping up with the volume of evolving regulations at the federal, state, and local levels to institute best practices and remain in compliance.
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Environmental Remediation
Trihydro has managed environmental remediation projects in Ohio and nationwide since 1984, offering technical and regulatory services on thousands of projects, including some of the nation's most complex sites. We guide our clients through the environmental remediation process from initial “big picture” remediation strategy development to implementation and then to remediation process optimization and site closure.
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Environmental Planning, Management, and Regulatory Compliance
Effective planning, management, and compliance with environmental regulations are critical to doing business economically, effectively, and sustainably. Without proper environmental compliance, companies expose themselves to potential regulatory fines and damaged reputations.
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Environmental Sustainability
Trihydro’s Environmental Health and Safety (EHS) Program Management services focus on reducing environmental impacts while maintaining regulatory compliance. We specialize in air quality monitoring, stormwater management, hazardous materials oversight, and waste management, helping clients navigate the environmental challenges associated with both daily operations and long-term infrastructure projects.
MORE CONTACT USOur Commitment to Ohio
Trihydro supports organizations that impact Ohio communities. We pride ourselves in our active role in the Midwest Region, including our year-round participation in and support of various regional and industry organizations.
Association Memberships
- Interstate Technology & Regulatory Council
- Ohio State Bar Association
- Ohio Chemistry Technology Council
- American Institute of Chemical Engineers
- American Society of Civil Engineers
- Association for Chemical Safety
- Buckeye STEPS Safety Network
- Ohio Oil and Gas Association
- Association of Illinois Soil & Water Conservation Districts
- Three Rivers Manufacturers Association
- Industrial Safety Training Council
- ENFINITE
- Air and Waste Management Association
Community Organization Volunteerism
- Greater Cincinnati Earth Day Festival
- FIRST Tech Challenge
- iSPACE – a STEM education non-profit
- Ohio Paddlefest
- Princeton Closet
- RefugeeConnect
- Northern Cincinnati Chamber of Commerce
- Junior Achievement
- Goodwill Hill Sportsman Club
- Boy Scouts of America
- Barron Men’s Shelterhouse
- Girls on the Run Greater Cincinnati
- Junior League of Cincinnati
We're on a Mission to Exceed Your Expectations
SEE SOME OF OUR OHIO WORK

Polychlorinated Biphenyl Contaminated Soil RemediationColumbus, OH
When a train partially derailed and impacted a Central Ohio Transit Authority (COTA) maintenance facility, Trihydro supported response efforts and soil remediation in coordination with United States Environmental Protection Agency (USEPA) requirements.
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RAJIB SINHA, P.E.
VICE PRESIDENT, REGIONAL INITIATIVES MANAGER
Cincinnati, OH
4650 Montgomery Rd, Suite 150
Cincinnati, OH 45212
513-429-7470
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