Environment Analyst named Tetra Tech as the #1 consultancy in its annual U.S. Environmental and Sustainability Consulting Market Assessment, published in May 2025.
Tetra Tech was ranked first in the top 27 U.S. Environmental and Sustainability (E&S) consultancies, based on data collected through Environment Analyst’s annual company survey and verification process and publicly available performance data. Environment Analyst, which compiled the report, is recognized internationally as one of the leading trusted intelligence sources for the E&S consulting sector.
The report provides a unique window on the E&S consulting sector in the U.S. through an in-depth assessment of the E&S operations, business models, and strategies of the 27 most prominent companies operating in the space. These companies represent 75 percent of the U.S. E&S consulting market, based on financial data for fiscal year 2023. The evaluation covers a detailed analysis of the marketplace and provides an assessment of market dynamics, industry drivers, and outlook over the next three years.
Tetra Tech ranked #1 in the top 27 U.S. Environmental and Sustainability consultancies.
In the key service area rankings, Tetra Tech was placed as the top firm in water and waste services, reflecting our leadership position in this sector. We also were the second largest consultancy in climate change and energy services and achieved top five rankings for sustainability and environmental, social, and governance (ESG) strategy, environment health and safety, and impact assessment, demonstrating our strong capabilities across these service areas.
Learn more about our innovative water, environment, and energy solutions.
Environment Analyst is an industry-leading market intelligence source for the E&S consulting sector. Learn more at environment-analyst.com.