The significant role of the unavoidable hot water treatment during laser ablation of lead in water in formation of the nonspherical 2D (plates) and 3D micro- and nanoparticles (octahedra and rods) in suspension and at the target surface has been shown experimentally. The formation of the nonspherical particles has been demonstrated at hot water treatment alone at temperature above 70 degrees C achieved frequently during laser ablation in water. The simple model was applied for explanation of the obtained formation of 3D particles. The 2D plates formed by seedless growth. The influence of the unavoidable hot water treatment should be considered as an additional mechanism for explanation of the formation of the nonspherical nanoparticles during laser ablation in water.