Know Your Environment. Protect Your Health.

Heptachlor epoxide

Harbour Point S/d

NOTE: Harbour Point S/d purchases water from Town of Mooresville which is required to test for heptachlor epoxide. Sample information shown below was taken by Town of Mooresville.

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

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
2019ND30ND
2020ND90ND
2021ND60ND
2022ND50ND
2023ND110ND

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: Harbour Point S/d purchases water from Town of Mooresville which is required to test for heptachlor epoxide. Sample information shown below was taken by Town of Mooresville.

Date Lab ID Result
2020-04-0880719-03ND
2020-04-0880720-03ND
2020-07-0884398-04ND
2020-07-0884399-06ND
2023-04-12752-5748-1ND
2023-04-12752-5748-2ND
2023-07-19752-9579-1ND
2023-07-19752-9579-2ND