TETRA TECH INC revenue for the last year amounted to 85.16 B MXN, the most of which — 54.91 B MXN — came from its highest performing source at the moment, Commercial/International Services Group, the year earlier bringing 42.26 B MXN. The greatest contribution to the revenue figure was made by United States — last year it brought TETRA TECH INC 63.03 B MXN, and the year before that — 49.92 B MXN.