Heptachlor is a white to tan waxy organic solid with a camphor-like odor. Heptachlor breaks down in the environment to form heptachlor epoxide. Most uses of heptachlor to kill termites in homes and insects on far crops was canceled in 1978. The only permitted use of heptachlor products is for fire ant control in buried pad-mounted electric power transformers, and in underground cable television and telephone cable boxes. Heptachlor was used to kill termites in the home, and insects found on farm crops. By 1988, the commercial sale of heptachlor was banned in the United States. Heptachlor may be released directly to the soil in connection with its use. It has also been found in treated wastewater from some types of industrial facilities.
Some people who drink water containing heptachlor well in excess of the maximum contaminant level (MCL) for many years could experience liver damage and may have an increased risk of getting cancer.
MCL ADVISORY - ACTION IS HIGHLY RECOMMENDED
Heptachlor levels were detected in your water sample to exceed the maximum contaminant level (MCL).
ACTION IS OPTIONAL
Heptachlor 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 Heptachlor in Drinking Water
- ATSDR - Toxic Substances Portal - Heptachlor and Heptachlor Epoxide
- Ohio Department of Health - Private Water Systems Program - Water Quality - Organic Contaminants
- ATSDR ToxFAQs Fact Sheet - Heptachlor and Heptachlor Epoxide