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As a global company we recognize that managing the impact of our own business also plays a part in securing a sustainable future for generations to come.

我们是 committed to reducing our impact throughout our operations—from reducing our greenhouse gas (GHG) emissions and office footprint, to using technology to improve our efficiency.

Emissions management

As part of our commitment to be Climate Positive and Carbon Negative, we have a strong emissions management program that has been reporting our emissions reductions since 2010.

In 2021 we reset our baseline and created ambitious, science-based targets in line with global best practices for GHG emissions reductions. These have been independently assessed and verified by the Science Based Targets initiative (SBTi) and are consistent with the global 1.5-degree Celsius target of the Paris Agreement.

We report on Scope 1, 2, and 3 emissions and continue to expand the data sets included in each of these scopes, setting a goal for 60 percent of our vendors by spend to commit to Science Based Targets by 2027.

Environmental management

We use the ISO 14001 Environmental Management System (EMS) framework to incorporate sustainability into our offices and work activities, including tracking and reporting on water consumption, renewable energy use, information technology systems efficiency, and recycled paper use.

Biodiversity conservation and restoration

Tetra Tech understands the strong connection between climate change, biodiversity loss, and reduced ecosystem functionality. We use our Leading with Science® approach to promote and protect biodiversity in ecosystem and coastal protection projects worldwide. We focus on three key aspects of biodiversity:

Our Progress

2023 environmental highlights


reduction in GHG emissions per employee for Scope 1 and 2 from 2021 baseline


of our operations now use renewable energy


reduction in office footprint per employee


of enterprise and project data residing in the cloud


of office supplies are recycled materials

Learn more about our Sustainability Program

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ESG Resources

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