As the #1-ranked Solid Waste firm by Engineering News-Record, Tetra Tech is proud to be home to leading technical experts and to use that expertise throughout the project life cycle. Our expertise includes award-winning solid waste system planning, facility design, and daily operations support. Tetra Tech’s innovative, sustainable solutions help clients address pressing water, environment, infrastructure, resource management, energy, and international development challenges. We combine the resources of a global, multibillion dollar company with local, client-focused delivery.