TETRA TECH INC revenue for the last year amounted to 65.38 B MXN, the most of which — 42.26 B MXN — came from its highest performing source at the moment, Commercial/International Services Group, the year earlier bringing 35.05 B MXN. The greatest contribution to the revenue figure was made by United States — last year it brought TETRA TECH INC 49.92 B MXN, and the year before that — 48.72 B MXN.