General Info

Established in 1968, NTH Consultants is a full-service, employee-owned firm that specializes in geotechnical, environmental and infrastructure engineering services. It offers professional consultation services to customers throughout the United States. NTH Consultants is comprised of more than 250 employees and serves customers in the public and private sectors. It maintains geotechnical and construction material testing laboratories. The company offers inspection, subsurface utility and natural gas plant replacement services. NTH Consultants operates over five offices throughout the Midwest and mid-Atlantic states. It conducts hazardous material surveys, construction and sewer inspections, and asbestos, lead, soil and mold investigations. The company also performs tests for sink holes, landfills and air quality.