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Spheros Environmental Climbs 22 Spots on ENR’s 2026 Top 200 Environmental Firms List

More Science for the Questions Clients Face

Environmental challenges rarely stay within one discipline. A water supply decision may depend on groundwater conditions, aquatic habitat, and permitting requirements. An infrastructure project may require air quality analysis, ecological surveys, and an understanding of cultural resources.

As Spheros grows, we bring more of that expertise together, helping clients understand how the pieces connect and make informed, defensible decisions.

Today, our team includes more than 550 professionals working across water resources, air quality, ecology and natural resources, climate and sustainability, impact assessment and permitting, and digital solutions and systems. Our growth has expanded both the depth of our technical expertise and the local knowledge we bring to projects across the country.

Built Through Our People and Clients

Behind this year’s ranking are the people conducting fieldwork, developing models, interpreting data, guiding projects, and supporting the work that makes it all possible. It also reflects the clients who continue to trust our teams with their environmental challenges.

Thank you to our employees, clients, and collaborators for helping shape Spheros’ first five years.

As we look ahead, our focus remains on bringing expertise together to deliver practical, science-forward solutions that help clients move forward with confidence.

Explore ENR’s 2026 Top 200 Environmental Firms list.

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Spheros Environmental