GZA is a multi-disciplinary, employee-owned firm providing geotechnical, environmental, ecological, water, and construction management services. GZA’s more than 700 professionals are based in offices in New England, the Mid-Atlantic, and the Great Lakes States. With a legacy of experience in geotechnical and environmental engineering, GZA has expanded its core services to include water, ecology, and construction management services. These five branches of service excellence are born from the same corporate tree. One Company: Five core services supporting 10 client sectors in numerous geographic locales throughout the United States. As a result, GZA leverages our in-house capabilities including  environmental engineering, permitting, structural engineering, public health, project management, environmental compliance auditing, industrial hygiene, pollution prevention, and air quality services to develop an approach for each project that maximizes value to our clients.