Exposure to lead is well known to have detrimental effects on the environment and human health, including almost every organ and system in the body. In Haiti, although leaded gasoline has been banned since 1998, lead is still present in the environment due to its persistence and bioaccumulative capacities. In addition to lead air emissions, urban groundwater resources are exposed to lead. The Haitian population is exposed to a widespread urban health problem that especially affects children and pregnant women who are more vulnerable.