Know Your Environment. Protect Your Health.

Heptachlor epoxide

Calcasieu Parish WW District No 1

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

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020ND40ND
2021ND30ND
2022ND20ND
2023ND40ND

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
2020-02-1035530699001ND
2020-02-1035530699002ND
2020-02-1035530699003ND
2020-02-1035530699004ND
2021-06-2235642979001ND
2021-09-2735666638001ND
2021-12-1335685467001ND
2022-02-2135698854001ND
2022-05-0235714834001ND
2023-02-0635778070001ND
2023-02-0635778070002ND
2023-02-0635778070003ND
2023-02-0635778070004ND