Know Your Environment. Protect Your Health.

Heptachlor epoxide

Jackson County Rural Water District 3

NOTE: Jackson County Rural Water District 3 purchases water from Public Wholesale Water Supply District 18 which is required to test for heptachlor epoxide. Sample information shown below was taken by Public Wholesale Water Supply District 18.

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

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND10ND
2021ND20ND
2022ND10ND
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

NOTE: Jackson County Rural Water District 3 purchases water from Public Wholesale Water Supply District 18 which is required to test for heptachlor epoxide. Sample information shown below was taken by Public Wholesale Water Supply District 18.

Date Lab ID Result
2018-05-14970830ND
2019-05-201157716ND
2020-05-181379411ND
2021-05-101835989ND
2022-05-162259161ND
2023-05-152499987ND