Results of the resistance of carbon nanotubes concrete composite (CNTs/concrete composite) to the action of pulsating and continuous water jets are presented in this paper. This work brings advanced results of fully hydrated CNTs/concrete composite (after 28 days) and it follows up the research of this composite hydrated 7 days. The experiments were focused on the determination of erosion effects of both types of water jets impinging the surface of reference (concrete) and CNTs/concrete composite samples. Erosion effects of water jets were evaluated in terms of material removal rate. Tests were performed at various operating parameters of continuous and pulsating water jets.