Chlorinated organic substances are often harmful to health and environment. Due to the chlorine content in these substances, they are not readily degradable in the environment and they can accumulate in humans and animals. Many chlorinated organic substances are manufactured due to their properties, such as being effective solvents. Other substances are formed unintentionally during for example combustion processes.
Read about each substance to find out more about the effects on health and environment, sources and transportation pathways of the different substances as well as about the international agreements and regulations that are in place.