Hexachlorocyclopentadiene is an industrial chemical used to make pesticides. It can enter water from factory waste. Exposure can damage kidneys and liver.

Hexachlorocyclopentadiene (HCCPD) is a synthetic compound primarily used in manufacturing pesticides and flame retardants. It can contaminate water sources through industrial discharges or improper disposal. HCCPD is persistent in the environment and can accumulate in sediments. Water treatment facilities use activated carbon filtration to remove it. The EPA has set a maximum contaminant level goal of 50 parts per billion in drinking water. Long-term exposure may lead to kidney and liver damage, though more research is needed to fully understand its health impacts.