Know Your Environment. Protect Your Health.

Heptachlor epoxide

Yadkinville, Town of

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

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND10ND
2020ND20ND
2021ND10ND
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
2018-04-0537729_18-13673ND
2018-10-0292401702006SOCND
2018-11-0892406563002SOCND
2019-05-3037729_19-22349AND
2020-02-2779200-01ND
2020-11-1792506642001_12710ND
2021-11-1092572131001_12710ND
2022-08-1092619957001_12710ND
2022-09-1592626153001_12710ND
2022-10-052103508-01ND
2022-10-242105109-01ND
2023-01-043013425-02ND
2023-01-053013425-01ND
2023-09-213093827-01ND
2023-09-213093829-01ND