Know Your Environment. Protect Your Health.

Heptachlor epoxide

Sunland Estates Homeowners Association

Heptachlor epoxide is a breakdown product of heptachlor, a highly toxic and carcinogenic pesticide banned in the U.S. since the 1980s.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND10ND
2020N/A00N/A
2021ND40ND
2022ND60ND
2023ND10ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.006 ppb

The EWG Health Guideline of 0.006 ppb for heptachlor epoxide was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL): 0.2 ppb

The legal limit for heptachlor epoxide, established in 1991, was based on analytical detection limits at the time that the standard was set. This limit may not fully protect against the risk of cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2018-01-10ND
2018-09-17ND
2019-10-07ND
2021-03-294107024ND
2021-06-274164634ND
2021-09-224188347ND
2021-10-264306377ND
2022-03-234269185ND
2022-03-234269186ND
2022-07-254327056ND
2022-07-254321868ND
2022-09-204364797ND
2022-10-254374113ND
2023-05-104479896ND