Geotechnical / Civil

GZA maintains a strong service base and expertise in our original core business and specialty of geotechnical/civil engineering. Through the focused integration of geotechnical, civil and environmental expertise, GZA routinely addresses a variety of complex ground-...

Environmental Services

GZA provides an array of consulting services to assist our clients with environmental management challenges. Our staff has an extensive knowledge of environmental regulations and we maintain credible working relationships with regulatory agency professionals...

Natural Resources

GZA has the experience and skills for providing the necessary natural resource expertise for a variety of land & water development projects as well as conservation management efforts for non-profit conservation organizations.

Contractor Services

GZA has delivered services to the construction industry since 1964. While traditional fee-for-service contracting continues, we also offer strategic, risk-sharing arrangements that integrate our engineering expertise with our full-service environmental capabilities...

Oil & Gas

GZA GeoEnvironmental, Inc. (GZA) offers comprehensive site/civil engineering services as well as planning and environmental consulting services to the oil and gas industry. GZA supports the exploration, processing, and transmission of oil and gas in the Northern...


Welcome to GZA GeoEnvironmental, Inc.

GZA is a professional services consulting firm focused on geotechnical, environmental, water, ecological, and construction management services. With a staff of interrelated professionals dedicated to providing high-level expertise on complex projects above, below and at ground-level, GZA’s experts provide seamless integration across practice areas, client type, and location. GZA employs more than 530 engineers, scientists, and technical support staff in 25 offices throughout the United States that cater to clients in the architecture and engineering, contracting, governmental, industrial, infrastructure, institutional, legal, oil and gas, power, and real estate industries. The firm is consistently ranked among the top 100 firms on Engineering News Record’s (ENR) annual list of the top 200 environmental firms. Excelling as a multi-disciplinary, multi-office firm of proactive, bright, and dedicated people, we provide value to our clients and our profession. We are Proactive by Design. We are One Company. We are GZA.

We are proud to be celebrating our 50th Anniversary in 2014 and we thank our Clients and Staff for helping us achieve this momentous milestone.

Featured News And Events

ACEC of Illinois Awards Luncheon - Huff & Huff Win Engineering Honor Award for first Environmentally Friendly Interstate on the Tollway (Illinois 47 Interchange at I-90) 02/06/2015 - 05:00

Staff from Huff & Huff (Chicago) attended the 2015 ACEC of Illinois Engineering Excellence Awards Lunch on February 6 to receive the Engineering Excellence Honor Award for their work on... » Read More

GZA Celebrates 50 Years in Business and New Partnership with New Jersey Institute of Technology 01/14/2015 - 05:00

In late October, the Fairfield, New Jersey office of GZA GeoEnvironmental, Inc. marked the company’s fiftieth anniversary by launching a new partnership with the New Jersey Institute... » Read More

CEO Featured in Boston Business Journal's "Lessons Learned" Section 12/02/2014 - 05:00

Bill Hadge, CEO - "Lessons Learned", Boston Business Journal (11/28/2014) "What is Your Company's Motto"? » Read More

Award for West Hartford Reservoir Dam No. 2 Improvements 11/21/2014 - 05:00

GZA's client, The Metropolitan District, was recently notified that they have won a Community Service Award from the Connecticut Construction Industries Association, Inc. for the Reservoir... » Read More