The condition of Thailand’s natural and social environment entered a crisis in 1990s, which resulted in major amendments to national laws concerning environment and pollution control in 1992. Without a doubt, Thailand has faced extensive degradation of natural resources and environmental quality. Environmental problems in turn have led to the ill-health of Thailand’s populace, and this has become even clearer over recent years. Environmental causes that have severely impacted human health include, among others, extensive chemical contamination of soil, water, and air, which have resulted from unsustainable industrialization and, more importantly, the lack of effective policy development and implementation.