Hexachlorocyclopentadiene is an oily, yellow-green organic liquid with a pungent odor. It is used as a raw material in manufacturing other chemicals, including pesticides, flame retardants, resins, dyes, pharmaceuticals, plastics, etc. Hex has no end uses of its own. The major source of hexachlorocyclopentadiene is discharge from chemical factories.
Some people who drink water containing hexachlorocyclopentadiene well in excess of the maximum contaminant level (MCL) for many years could experience problems with their kidneys or stomach.
MCL ADVISORY - ACTION IS HIGHLY RECOMMENDED
Hexachlorocyclopentadiene levels were detected in your water sample to exceed the maximum contaminant level (MCL).
ACTION IS OPTIONAL
Hexachlorocyclopentadiene levels were detected in your water sample but do not exceed the maximum contaminant level.
- USEPA - Water: Basic Information about Regulated Drinking Water Contaminants - Basic Information about Hexachlorocyclopentadiene in Drinking Water
- ATSDR - Toxic Substances Portal - Hexachlorocyclopentadiene (HCCPD)
- Ohio Department of Health - Private Water Systems Program - Water Quality - Organic Contaminants
- ATSDR ToxFAQs Fact Sheet - Hexachlorocyclopentadiene (HCCPD)