Tetra Tech


Massachusetts New Hampshire Connecticut Maine Transportation Services Wastewater Management Water Quality Construction and Demolition Environmental Engineering Land Use Planning Site Assessment Site Remediation Engineering


Founded in 1966, Tetra Tech is a leading provider of consulting and engineering services. We are differentiated by Leading with Science® to support global commercial and government clients focused on water, environment, sustainable infrastructure, renewable energy, and international development. With more than 550 offices and 27,000 associates worldwide, Tetra Tech provides clear solutions to complex problems. Our solutions span the entire project lifecycle, from concept through construction. We guide multidisciplinary projects to successful completion, with particular expertise in Natural Resources; Water and Wastewater; Climate Resilience Planning and Sustainable Design; Remediation, Assessment and Compliance; Transportation; and Land Development. Tetra Tech also specializes in helping clients comply with environmental regulations at the local, state, and federal level. We resolve impact assessment and permitting issues associated with water resources, wetlands, land use, and threatened and endangered species, from the early identification of risks to the proper mitigation of impacts during construction. Tetra Tech is the 4th largest design firm in the country and has ranked as the Engineering News Record’s #1 Water firm for 19 consecutive years.



Edward Ionata
Senior Vice President

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