According to our records, this business is located at 56 W Main St Ste 400 in Newark (in New Castle County), Delaware 19702, the location GPS coordinates are: 39.6830183 (latitude), -75.7538957 (longitude). Tetra Tech Inc is categorized under Industrial Consultants (SIC code 8748). Known organization manager is Carl Hsu. You can contact the company by phone at (302) 738-7551.