Know Your Environment. Protect Your Health.

Heptachlor epoxide

Fayette Water Supply Corporation West

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

 

29

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
2019ND30ND
2020ND40ND
2021ND80ND
2022ND40ND
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
2018-03-06AE17127ND
2018-03-06AE17129ND
2018-03-06AE17130ND
2018-03-06AE17126ND
2018-04-24AE23817ND
2018-04-24AE23818ND
2019-06-13AE70699ND
2019-09-05AE82351ND
2019-11-21AE90227ND
2020-02-12AE98251ND
2020-04-13AF06415ND
2020-07-08AF18707ND
2020-11-16AF34690ND
2021-03-08AF45805ND
2021-03-31AF48582ND
2021-04-28AF51544ND
2021-04-28AF51545ND
2021-04-28AF51546ND
2021-04-28AF51547ND
2021-07-19AF62528ND
2021-10-05Q2127458001ND
2022-02-14AF84722ND
2022-05-31AF98867ND
2022-09-20AG13983ND
2022-10-12AG16880ND
2023-03-09AG32496ND
2023-04-04AG35466ND
2023-07-27AG50480ND
2023-10-17AG60127ND