If you use Colgate Total the answer is no. Total brand toothpaste contains the antibacterial triclosan, a chemical currently under review in the U.S. because it is suspected of contributing to all sorts of health and environmental problems.
The GreenScreenAssessment is a tool recently used by the Canadian Environmental Law Association to assess the impact of antibacterial products on human health and the environment. Based on the resulting report the Association called on the Canadian government to ban antibacterials (triclosan and triclocarban). The report says that the risks posed by these chemicals to human health and the environment far outweigh the benefits.