Know Your Environment. Protect Your Health.

Heptachlor epoxide

Wayne, City of

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
2018ND80ND
2019N/A00N/A
2020N/A00N/A
2021ND60ND
2022N/A00N/A
2023N/A00N/A

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
2018-06-11544583ND
2018-06-11544586ND
2018-06-11544584ND
2018-06-18559574ND
2018-09-04561151ND
2018-09-04561149ND
2018-09-04561148ND
2018-09-04561150ND
2021-05-24729692ND
2021-05-24729690ND
2021-05-24729691ND
2021-09-20747692ND
2021-09-20747693ND
2021-09-20747691ND